Author: "Franco C. A." / Topic: compass - Searchworks@Jio Institute Digital Library Search Results

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48 results on '"Franco C. A."'

1. Probing transversity by measuring Λ polarisation in SIDIS

Author: Compass Collaboration, Alexeev, G. D., Balestra, F., Kunne, F., Kurek, K., Kurjata, R. P., Kveton, A., Lavickova, K., Levorato, S., Lian, Y.-S., Lichtenstadt, J., Lin, P.-J., Longo, R., Ball, M., Lyubovitskij, V. E., Maggiora, A., Magnon, A., Makins, N., Makke, N., Mallot, G. K., Maltsev, A., Mamon, S. A., Marianski, B., Martin, A., Barth, J., Marzec, J., Matoušek, J., Matsuda, T., Mattson, G., Meshcheryakov, G. V., Metzger, F., Meyer, M., Meyer, W., Mikhailov, Yu V., Mikhasenko, M., Beck, R., Mitrofanov, E., Miyachi, Y., Moretti, A., Nagaytsev, A., Naim, C., Negrini, T. S., Neyret, D., Nový, J., Nowak, W.-D., Nukazuka, G., Bedfer, Y., Nunes, A. S., Olshevsky, A. G., Ostrick, M., Panzieri, D., Parsamyan, B., Paul, S., Pekeler, H., Peng, J.-C., Rudnicki, T., Pešek, M., Berenguer Antequera, J., Peshekhonov, D. V., Pešková, M., Pierre, N., Platchkov, S., Pochodzalla, J., Polyakov, V. A., Pretz, Jörg, Quaresma, M., Quintans, C., Reicherz, G., Bernhard, J., Riedl, C., Ryabchikov, D. I., Rychter, A., Rymbekova, A., Samoylenko, V. D., Sandacz, A., Sarkar, S., Savin, I. A., Sbrizzai, G., Schiavon, P., Bodlak, M., Schmieden, H., Selyunin, A., Sharko, K., Sinha, L., Slunecka, M., Smolik, J., Sozzi, F., Srnka, A., Steffen, D., Stolarski, M., Bradamante, F., Subrt, O., Sulc, M., Suzuki, H., Sznajder, P., Tessaro, S., Tessarotto, F., Thiel, A., Tomsa, J., Tosello, F., Townsend, A., Bressan, A., Tskhay, V., Uhl, S., Vasilishin, B. I., Vauth, A., Veit, B. M., Veloso, J., Ventura, B., Vidon, A., Virius, M., Wagner, M., Alexeev, M. G., Burtsev, V. E., Wallner, S., Zaremba, K., Zavada, P., Zavertyaev, M., Zemko, M., Zemlyanichkina, E., Zhao, Y., Ziembicki, M., Chang, W.-C., Chatterjee, C., Chiosso, M., Chumakov, A. G., Chung, S.-U., Cicuttin, A., Correia, P. M. M., Crespo, M. L., D'Ago, D., Amoroso, A., Dalla Torre, S., Dasgupta, S. S., Dasgupta, S., Denisenko, I., Denisov, O. Yu, Donskov, S. V., Doshita, N., Dreisbach, Ch., Dünnweber, W., Dusaev, R. R., Andrieux, V., Efremov, A., Elia, C., Eremeev, D., Eversheim, P. D., Faccioli, P., Faessler, M., Ferrero, A., Finger, M., Fischer, H., Anosov, V., Flöthner, K. J., Franco, C., Friedrich, J. M., Frolov, V., Garcia Ordòñez, L. G., Gautheron, F., Gavrichtchouk, O. P., Gerassimov, S., Giarra, J., Giordano, D., Augsten, K., Gnesi, I., Gorzellik, M., Grasso, A., Gridin, A., Grosse Perdekamp, M., Grube, B., Guskov, A., von Harrach, D., Heitz, R., Hoffmann, M., Augustyniak, W., Horikawa, N., d'Hose, N., Hsieh, C.-Y., Huber, S., Ishimoto, S., Ivanov, A., Iwata, T., Jandek, M., Jary, V., Joosten, R., Azevedo, C. D. R., Kabuß, E., Kang, D.-H., Kaspar, F., Kerbizi, A., Ketzer, B., Khaustov, G. V., Khokhlov, Yu A., Kisselev, Yu., Klein, F., Koivuniemi, J. H., Badełek, B., Kolosov, V. N., Kondo Horikawa, K., Konorov, I., Konstantinov, V. F., Kotzinian, A. M., Kouznetsov, O. M., Koval, A., Kral, Z., Krinner, F., Kulinich, Y., Alexeev, Gd, Alexeev, Mg, Amoroso, A, Andrieux, V, Anosov, V, Augsten, K, Augustyniak, W, Azevedo, Cdr, Badelek, B, Balestra, F, Ball, M, Barth, J, Beck, R, Bedfer, Y, Antequera, Jb, Bernhard, J, Bodlak, M, Bradamante, F, Bressan, A, Burtsev, Ve, Chang, Wc, Chatterjee, C, Chiosso, M, Chumakov, Ag, Chung, Su, Cicuttin, A, Correia, Pmm, Crespo, Ml, D'Ago, D, Dalla Torre, S, Dasgupta, S, Denisenko, I, Denisov, Oy, Donskov, Sv, Doshita, N, Dreisbach, C, Dunnweber, W, Dusaev, Rr, Efremov, A, Elia, C, Eremeev, D, Eversheim, Pd, Faccioli, P, Faessler, M, Ferrero, A, Finger, M, Fischer, H, Flothner, Kj, Franco, C, Friedrich, Jm, Frolov, V, Ordonez, Lgg, Gautheron, F, Gavrichtchouk, Op, Gerassimov, S, Giarra, J, Giordano, D, Gnesi, I, Gorzellik, M, Grasso, A, Gridin, A, Perdekamp, Mg, Grube, B, Guskov, A, von Harrach, D, Heitz, R, Hoffmann, M, Horikawa, N, D'Hose, N, Hsieh, Cy, Huber, S, Ishimoto, S, Ivanov, A, Iwata, T, Jandek, M, Jary, V, Joosten, R, Kabuss, E, Kang, Dh, Kaspar, F, Kerbizi, A, Ketzer, B, Khaustov, Gv, Khokhlov, Ya, Kisselev, Y, Klein, F, Koivuniemi, Jh, Kolosovs, Vn, Horikawa, Kk, Konorov, I, Konstantinov, Vf, Kotzinian, Am, Kouznetsov, Om, Koval, A, Kral, Z, Krinner, F, Kulinich, Y, Kunne, F, Kurek, K, Kurjata, Rp, Kveton, A, Lavickova, K, Levorato, S, Lian, Y, Lichtenstadt, J, Lin, N, Longo, R, Lyubovitskij, Ve, Maggiora, A, Magnon, A, Makins, N, Makke, N, Mallot, Gk, Maltsev, A, Mamon, Sa, Marianski, B, Martin, A, Marzec, J, Matousek, J, Matsuda, T, Mattson, G, Meshcheryakov, Gv, Metzger, F, Meyer, M, Meyer, W, Mikhailov, Yv, Mikhasenko, M, Mitrofanov, E, Miyachi, Y, Moretti, A, Nagaytsev, A, Naim, C, Negrini, T, Neyret, D, Novy, J, Nowak, Wd, Nukazuka, G, Nunes, A, Olshevsky, Ag, Ostrick, M, Panzieri, D, Parsamyan, B, Paul, S, Pekeler, H, Peng, Jc, Pesek, M, Peshekhonov, Dv, Peskova, M, Pierre, N, Platchkov, S, Pochodzalla, J, Polyakov, Va, Pretz, J, Quaresma, M, Quintans, C, Reicherz, G, Riedl, C, Rudnicki, T, Ryabchikov, Di, Rychter, A, Rymbekova, A, Samoylenko, Vd, Sandacz, A, Sarkar, S, Savin, Ia, Sbrizzai, G, Schiavon, R, Schmieden, H, Selyunin, A, Sharko, K, Sinha, L, Slunecka, M, Smolik, J, Sozzi, F, Srnka, A, Steffen, D, Stolarski, M, Subrt, O, Sulc, M, Suzuki, H, Sznajder, R, Tessaro, S, Tessarotto, F, Thiel, A, Tomsa, J, Tosello, F, Townsend, A, Tskhay, V, Uhl, S, Vasilishin, Bi, Vauth, A, Veit, Bm, Veloso, J, Ventura, B, Vidon, A, Virius, M, Wagner, M, Wallner, S, Zaremba, K, Zavada, R, Zavertyaev, M, Zemko, M, Zemlyanichkina, E, Zhao, Y, Ziembicki, M, Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, and COMPASS
Subjects: quark: distribution function, Nuclear and High Energy Physics, QC1-999, polarization: longitudinal, Nuclear Theory, mass spectrum: (anti-p pi+), FOS: Physical sciences, muon: secondary beam, 01 natural sciences, COMPASS, High Energy Physics - Experiment, High Energy Physics - Experiment (hep-ex), mass spectrum: (p pi-), 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], Quantum chromodynamic, quark: polarization: transverse, ddc:530, 010306 general physics, Nuclear Experiment, hyperon: final state, Antilambda: polarization, deep inelastic scattering: semi-inclusive reaction, 010308 nuclear & particles physics, polarized target: transverse, Physics, High Energy Physics::Phenomenology, Lambda: polarization, nucleon: polarization: transverse, CERN SPS, Lambda polarisation, Transversity, High Energy Physics::Experiment, Quantum chromodynamics, Deep inelastic scattering, muon: polarized beam, spin: asymmetry, Particle Physics - Experiment, experimental results
Abstract: Based on the observation of sizeable target-transverse-spin asymmetries in single-hadron and hadron-pair production in Semi-Inclusive measurements of Deep Inelastic Scattering (SIDIS), the chiral-odd transversity quark distribution functions $h_1^q$ are nowadays well established. Several possible channels to access these functions were originally proposed. One candidate is the measurement of the polarisation of $\Lambda$ hyperons produced in SIDIS off transversely polarised nucleons, where the transverse polarisation of the struck quark might be transferred to the final-state hyperon. In this article, we present the COMPASS results on the transversity-induced polarisation of $\Lambda$ and $\bar{\Lambda}$ hyperons produced in SIDIS off transversely polarised protons. Within the experimental uncertainties, no significant deviation from zero was observed. The results are discussed in the context of different models taking into account previous experimental results on $h_1^u$ and $h_1^d$., Comment: 18 pages, 6 figures
Published: 2022

2. Triangle Singularity as the Origin of the $a_1(1420)$

Author: Alexeev, G. D., Alexeev, M. G., Amoroso, A., Andrieux, V., Anosov, V., Antoshkin, A., Augsten, K., Augustyniak, W., Azevedo, C. D. R., Badelek, B., Balestra, F., Ball, M., Barth, J., Beck, R., Bedfer, Y., Antequera, J. Berenguer, Bernhard, J., Bodlak, M., Bradamante, F., Bressan, A., Burtsev, V. E., Chang, W. -C., Chatterjee, C., Chiosso, M., Chumakov, A. G., Chung, S. -U., Cicuttin, A., Correia, P. M. M., Crespo, M. L., D'Ago, D., Torre, S. Dalla, Dasgupta, S. S., Dasgupta, S., Denisenko, I., Denisov, O. Yu., Donskov, S. V., Doshita, N., Dreisbach, Ch., Duennweber, W., Dusaev, R. R., Efremov, A., Eversheim, P. D., Faccioli, P., Faessler, M., Finger, M., Finger jr., M., Fischer, H., Franco, C., Friedrich, J. M., Frolov, V., Gautheron, F., Gavrichtchouk, O. P., Gerassimov, S., Giarra, J., Gnesi, I., Gorzellik, M., Grasso, A., Gridin, A., Perdekamp, M. Grosse, Grube, B., Guskov, A., von Harrach, D., Heitz, R., Herrmann, F., Horikawa, N., d'Hose, N., Hsieh, C. -Y., Huber, S., Ishimoto, S., Ivanov, A., Iwata, T., Jandek, M., Jary, T., Joosten, R., Joerg, P., Kabuss, E., Kaspar, F., Kerbizi, A., Ketzer, B., Khaustov, G. V., Khokhlov, Yu. A., Kisselev, Yu., Klein, F., Koivuniemi, J. H., Kolosov, V. N., Kondo, K., Konorov, I., Konstantinov, V. F., Kotzinian, A. M., Kouznetsov, O. M., Koval, A., Kral, Z., Krinner, F., Kulinich, Y., Kunne, F., Kurek, K., Kurjata, R. P., Kveton, A., Lavickova, K., Levorato, S., Lian, Y. -S., Lichtenstadt, J., Lin, P. -J., Longo, R., Lyubovitskij, V. E., Maggiora, A., Magnon, A., Makins, N., Makke, N., Mallot, G. K., Maltsev, A., Mamon, S. A., Marianski, B., Martin, A., Marzec, J., Matousek, J., Matsuda, T., Mattson, G., Meshcheryakov, G. V., Meyer, M., Meyer, W., Mikhailov, Yu. V., Mikhasenko, M., Mitrofanov, E., Mitrofanov, N., Miyachi, Y., Moretti, A., Nagaytsev, A., Naim, C., Neyret, D., Novy, J., Nowak, W. -D., Nukazuka, G., Nunes, A. S., Olshevskiy, A. G., Ostrick, M., Panzieri, D., Parsamyan, B., Paul, S., Pekeler, H., Peng, J. -C., Pesek, M., Peshekhonov, D. V., Peskova, M., Pierre, N., Platchkov, S., Pochodzalla, J., Polyakov, V. A., Pretz, J., Quaresma, M., Quintans, C., Reicherz, G., Riedl, C., Rudnicki, T., Ryabchikov, D. I., Rybnikov, A., Rychter, A., Samoylenko, V. D., Sandacz, A., Sarkar, S., Savin, I. A., Sbrizzai, G., Schmieden, H., Selyunin, A., Sinha, L., Slunecka, M., Smolik, J., Srnka, A., Steffen, D., Stolarski, M., Subrt, O., Sulc, M., Suzuki, H., Sznajder, P., Tessaro, S., Tessarotto, F., Thiel, A., Tomsa, J., Tosello, F., Townsend, A., Tskhay, V., Uhl, S., Vasilishin, B. I., Vauth, A., Veit, B. M., Veloso, J., Ventura, B., Vidon, A., Virius, M., Wagner, M., Wallner, S., Zaremba, K., Zavada, P., Zavertyaev, M., Zemko, M., Zemlyanichkina, E., Zhao, Y., Ziembicki, M., Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, COMPASS, Alexeev, G. D., Alexeev, M. G., Amoroso, A., Andrieux, V., Anosov, V., Antoshkin, A., Augsten, K., Augustyniak, W., Azevedo, C. D. R., Badełek, B., Balestra, F., Ball, M., Barth, J., Beck, R., Bedfer, Y., Berenguer Antequera, J., Bernhard, J., Bodlak, M., Bradamante, F., Bressan, A., Burtsev, V. E., Chang, W. -C., Chatterjee, C., Chiosso, M., Chumakov, A. G., Chung, S. -U., Cicuttin, A., Correia, P. M. M., Crespo, M. L., D’Ago, D., Dalla Torre, S., Dasgupta, S. S., Dasgupta, S., Denisenko, I., Denisov, O. Yu., Donskov, S. V., Doshita, N., Dreisbach, Ch., Dünnweber, W., Dusaev, R. R., Efremov, A., Eversheim, P. D., Faccioli, P., Faessler, M., Finger, M., Fischer, H., Franco, C., Friedrich, J. M., Frolov, V., Gautheron, F., Gavrichtchouk, O. P., Gerassimov, S., Giarra, J., Gnesi, I., Gorzellik, M., Grasso, A., Gridin, A., Grosse Perdekamp, M., Grube, B., Guskov, A., von Harrach, D., Heitz, R., Herrmann, F., Horikawa, N., D’Hose, N., Hsieh, C. -Y., Huber, S., Ishimoto, S., Ivanov, A., Iwata, T., Jandek, M., Jary, V., Joosten, R., Jörg, P., Kabuß, E., Kaspar, F., Kerbizi, A., Ketzer, B., Khaustov, G. V., Khokhlov, Yu. A., Kisselev, Yu., Klein, F., Koivuniemi, J. H., Kolosov, V. N., Kondo Horikawa, K., Konorov, I., Konstantinov, V. F., Kotzinian, A. M., Kouznetsov, O. M., Koval, A., Kral, Z., Krinner, F., Kulinich, Y., Kunne, F., Kurek, K., Kurjata, R. P., Kveton, A., Lavickova, K., Levorato, S., Lian, Y. -S., Lichtenstadt, J., Lin, P. -J., Longo, R., Lyubovitskij, V. E., Maggiora, A., Magnon, A., Makins, N., Makke, N., Mallot, G. K., Maltsev, A., Mamon, S. A., Marianski, B., Martin, A., Marzec, J., Matoušek, J., Matsuda, T., Mattson, G., Meshcheryakov, G. V., Meyer, M., Meyer, W., Mikhailov, Yu. V., Mikhasenko, M., Mitrofanov, E., Mitrofanov, N., Miyachi, Y., Moretti, A., Nagaytsev, A., Naim, C., Neyret, D., Nový, J., Nowak, W. -D., Nukazuka, G., Nunes, A. S., Olshevsky, A. G., Ostrick, M., Panzieri, D., Parsamyan, B., Paul, S., Pekeler, H., Peng, J. -C., Pešek, M., Peshekhonov, D. V., Pešková, M., Pierre, N., Platchkov, S., Pochodzalla, J., Polyakov, V. A., Pretz, J., Quaresma, M., Quintans, C., Reicherz, G., Riedl, C., Rudnicki, T., Ryabchikov, D. I., Rybnikov, A., Rychter, A., Samoylenko, V. D., Sandacz, A., Sarkar, S., Savin, I. A., Sbrizzai, G., Schmieden, H., Selyunin, A., Sinha, L., Slunecka, M., Smolik, J., Srnka, A., Steffen, D., Stolarski, M., Subrt, O., Sulc, M., Suzuki, H., Sznajder, P., Tessaro, S., Tessarotto, F., Thiel, A., Tomsa, J., Tosello, F., Townsend, A., Tskhay, V., Uhl, S., Vasilishin, B. I., Vauth, A., Veit, B. M., Veloso, J., Ventura, B., Vidon, A., Virius, M., Wagner, M., Wallner, S., Zaremba, K., Zavada, P., Zavertyaev, M., Zemko, M., Zemlyanichkina, E., Zhao, Y., and Ziembicki, M.
Subjects: isovector, partial wave, meson: exotic, FOS: Physical sciences, axial-vector, quantum number, COMPASS, singularity, High Energy Physics - Experiment, High Energy Physics - Phenomenology, hadron physics, resonance, High Energy Physics - Experiment (hep-ex), compass, High Energy Physics - Phenomenology (hep-ph), resonance, quality, hadron physics, [PHYS.HPHE]Physics [physics]/High Energy Physics - Phenomenology [hep-ph], [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], High Energy Physics::Experiment, ground state, structure, compa, Particle Physics - Experiment
Abstract: The COMPASS experiment recently discovered a new isovector resonance-like signal with axial-vector quantum numbers, the $a_1(1420)$, decaying to $f_0(980)\pi$. With a mass too close to and a width smaller than the axial-vector ground state $a_1(1260)$, it was immediately interpreted as a new light exotic meson, similar to the $X$, $Y$, $Z$ states in the hidden-charm sector. We show that a resonance-like signal fully matching the experimental data is produced by the decay of the $a_1(1260)$ resonance into $K^\ast(\to K\pi)\bar{K}$ and subsequent rescattering through a triangle singularity into the coupled $f_0(980)\pi$ channel. The amplitude for this process is calculated using a new approach based on dispersion relations. The triangle-singularity model is fitted to the partial-wave data of the COMPASS experiment. Despite having less parameters, this fit shows a slightly better quality than the one using a resonance hypothesis and thus eliminates the need for an additional resonance in order to describe the data. We thereby demonstrate for the first time in the light-meson sector that a resonance-like structure in the experimental data can be described by rescattering through a triangle singularity, providing evidence for a genuine three-body effect., Comment: 7 pages, 5 figures
Published: 2021

3. Measurement of P T -weighted Sivers asymmetries in leptoproduction of hadrons

Author: Alexeev, M.G., Alexeev, G.D., Amoroso, A., Andrieux, V., Anfimov, N.V., Anosov, V., Antoshkin, A., Augsten, K., Augustyniak, W., Azevedo, C.D.R., Badełek, B., Balestra, F., Ball, M., Barth, J., Barone, V., Beck, R., Bedfer, Y., Bernhard, J., Bicker, K., Bielert, E.R., Bodlak, M., Bordalo, P., Bradamante, F., Bressan, A., Büchele, M., Burtsev, V.E., Chang, W.-C., Chatterjee, C., Chiosso, M., Chumakov, A.G., Chung, S.-U., Cicuttin, A., Crespo, M.L., Dalla Torre, S., Dasgupta, S.S., Dasgupta, S., Denisov, O.Yu., Dhara, L., Donskov, S.V., Doshita, N., Dreisbach, Ch., Dünnweber, W., Dusaev, R.R., Dziewiecki, M., Efremov, A., Elia, C., Eversheim, P.D., Faessler, M., Ferrero, A., Finger, M., Finger, Michael, Jr., Fischer, H., Franco, C., du Fresne von Hohenesche, N., Friedrich, J.M., Frolov, V., Gautheron, F., Gavrichtchouk, O.P., Gerassimov, S., Giarra, J., Gnesi, I., Gorzellik, M., Grasso, A., Gridin, A., Grosse Perdekamp, M., Grube, B., Guskov, A., Hahne, D., Hamar, G., von Harrach, D., Heitz, R., Herrmann, F., Horikawa, N., d'Hose, N., Hsieh, C.-Y., Huber, S., Ishimoto, S., Ivanov, A., Iwata, T., Jandek, M., Jary, V., Joosten, R., Jörg, P., Juraskova, K., Kabuß, E., Kaspar, F., Kerbizi, A., Ketzer, B., Khaustov, G.V., Khokhlov, Yu.A., Kisselev, Yu., Klein, F., Koivuniemi, J.H., Kolosov, V.N., Kondo, K., Konorov, I., Konstantinov, V.F., Kotzinian, A.M., Kouznetsov, O.M., Kral, Z., Krämer, M., Krinner, F., Kroumchtein, Z.V., Kulinich, Y., Kunne, F., Kurek, K., Kurjata, R.P., Kveton, A., Lednev, A.A., Levorato, S., Lian, Y.-S., Lichtenstadt, J., Longo, R., Lyubovitskij, V.E., Maggiora, A., Magnon, A., Makins, N., Makke, N., Mallot, G.K., Mamon, S.A., Marianski, B., Martin, A., Marzec, J., Matoušek, J., Matsuda, T., Meshcheryakov, G.V., Meyer, M., Meyer, W., Mikhailov, Yu.V., Mikhasenko, M., Mitrofanov, E., Mitrofanov, N., Miyachi, Y., Moretti, A., Nagaytsev, A., Neyret, D., Nový, J., Nowak, W.-D., Nukazuka, G., Nunes, A.S., Olshevsky, A.G., Orlov, I., Ostrick, M., Panzieri, D., Parsamyan, B., Paul, S., Peng, J.-C., Pereira, F., Pešek, M., Pešková, M., Peshekhonov, D.V., Pierre, N., Platchkov, S., Pochodzalla, J., Polyakov, V.A., Pretz, J., Quaresma, M., Quintans, C., Ramos, S., Regali, C., Reicherz, G., Riedl, C., Ryabchikov, D.I., Rybnikov, A., Rychter, A., Salac, R., Samoylenko, V.D., Sandacz, A., Sarkar, S., Savin, I.A., Sawada, T., Sbrizzai, G., Schiavon, P., Schmieden, H., Seder, E., Selyunin, A., Silva, L., Sinha, L., Sirtl, S., Slunecka, M., Smolik, J., Sozzi, F., Srnka, A., Steffen, D., Stolarski, M., Subrt, O., Sulc, M., Suzuki, H., Szabelski, A., Szameitat, T., Sznajder, P., Tasevsky, M., Tessaro, S., Tessarotto, F., Thiel, A., Tomsa, J., Tosello, F., Tskhay, V., Uhl, S., Vasilishin, B.I., Vauth, A., Veit, B.M., Veloso, J., Vidon, A., Virius, M., Wagner, M., Wallner, S., Wilfert, M., Zaremba, K., Zavada, P., Zavertyaev, M., Zhao, Y., Zemlyanichkina, E., Ziembicki, M., Alexeev, M. G., Alexeev, G. D., Amoroso, A., Andrieux, V., Anfimov, N. V., Anosov, V., Antoshkin, A., Augsten, K., Augustyniak, W., Azevedo, C. D. R., Badełek, B., Balestra, F., Ball, M., Barth, J., Barone, V., Beck, R., Bedfer, Y., Bernhard, J., Bicker, K., Bielert, E. R., Bodlak, M., Bordalo, P., Bradamante, F., Bressan, A., Büchele, M., Burtsev, V. E., Chang, W. -C., Chatterjee, C., Chiosso, M., Chumakov, A. G., Chung, S. -U., Cicuttin, A., Crespo, M. L., Dalla Torre, S., Dasgupta, S. S., Dasgupta, S., Denisov, O. Yu., Dhara, L., Donskov, S. V., Doshita, N., Dreisbach, Ch., Dünnweber, W., Dusaev, R. R., Dziewiecki, M., Efremov, A., Elia, C., Eversheim, P. D., Faessler, M., Ferrero, A., Finger, M., Fischer, H., Franco, C., du Fresne von Hohenesche, N., Friedrich, J. M., Frolov, V., Gautheron, F., Gavrichtchouk, O. P., Gerassimov, S., Giarra, J., Gnesi, I., Gorzellik, M., Grasso, A., Gridin, A., Grosse Perdekamp, M., Grube, B., Guskov, A., Hahne, D., Hamar, G., von Harrach, D., Heitz, R., Herrmann, F., Horikawa, N., D'Hose, N., Hsieh, C. -Y., Huber, S., Ishimoto, S., Ivanov, A., Iwata, T., Jandek, M., Jary, V., Joosten, R., Jörg, P., Juraskova, K., Kabuß, E., Kaspar, F., Kerbizi, A., Ketzer, B., Khaustov, G. V., Khokhlov, Yu. A., Kisselev, Yu., Klein, F., Koivuniemi, J. H., Kolosov, V. N., Kondo, K., Konorov, I., Konstantinov, V. F., Kotzinian, A. M., Kouznetsov, O. M., Kral, Z., Krämer, M., Krinner, F., Kroumchtein, Z. V., Kulinich, Y., Kunne, F., Kurek, K., Kurjata, R. P., Kveton, A., Lednev, A. A., Levorato, S., Lian, Y. -S., Lichtenstadt, J., Longo, R., Lyubovitskij, V. E., Maggiora, A., Magnon, A., Makins, N., Makke, N., Mallot, G. K., Mamon, S. A., Marianski, B., Martin, A., Marzec, J., Matoušek, J., Matsuda, T., Meshcheryakov, G. V., Meyer, M., Meyer, W., Mikhailov, Yu. V., Mikhasenko, M., Mitrofanov, E., Mitrofanov, N., Miyachi, Y., Moretti, A., Nagaytsev, A., Neyret, D., Nový, J., Nowak, W. -D., Nukazuka, G., Nunes, A. S., Olshevsky, A. G., Orlov, I., Ostrick, M., Panzieri, D., Parsamyan, B., Paul, S., Peng, J. -C., Pereira, F., Pešek, M., Pešková, M., Peshekhonov, D. V., Pierre, N., Platchkov, S., Pochodzalla, J., Polyakov, V. A., Pretz, J., Quaresma, M., Quintans, C., Ramos, S., Regali, C., Reicherz, G., Riedl, C., Ryabchikov, D. I., Rybnikov, A., Rychter, A., Salac, R., Samoylenko, V. D., Sandacz, A., Sarkar, S., Savin, I. A., Sawada, T., Sbrizzai, G., Schiavon, P., Schmieden, H., Seder, E., Selyunin, A., Silva, L., Sinha, L., Sirtl, S., Slunecka, M., Smolik, J., Sozzi, F., Srnka, A., Steffen, D., Stolarski, M., Subrt, O., Sulc, M., Suzuki, H., Szabelski, A., Szameitat, T., Sznajder, P., Tasevsky, M., Tessaro, S., Tessarotto, F., Thiel, A., Tomsa, J., Tosello, F., Tskhay, V., Uhl, S., Vasilishin, B. I., Vauth, A., Veit, B. M., Veloso, J., Vidon, A., Virius, M., Wagner, M., Wallner, S., Wilfert, M., Zaremba, K., Zavada, P., Zavertyaev, M., Zhao, Y., Zemlyanichkina, E., Ziembicki, M., Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, and COMPASS
Subjects: Nuclear and High Energy Physics, Nuclear Theory, FOS: Physical sciences, hadron: transverse momentum, COMPASS, fragmentation function, High Energy Physics - Experiment, hadron: leptoproduction, p: target, Sivers function, High Energy Physics - Experiment (hep-ex), High Energy Physics - Phenomenology (hep-ph), [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], polarization: transverse, Nuclear Experiment, spin: transverse, Particle Physics - Phenomenology, hep-ex, hep-ph, distribution function: transverse momentum dependence, semi-inclusive reaction, High Energy Physics - Phenomenology, spin: asymmetry: measured, nucleon: spin, High Energy Physics::Experiment, quark: polarization, Particle Physics - Experiment
Abstract: The transverse spin asymmetries measured in semi-inclusive leptoproduction of hadrons, when weighted with the hadron transverse momentum $P_T$, allow for the extraction of important transverse-momentum-dependent distribution functions. In particular, the weighted Sivers asymmetries provide direct information on the Sivers function, which is a leading-twist distribution that arises from a correlation between the transverse momentum of an unpolarised quark in a transversely polarised nucleon and the spin of the nucleon. Using the high-statistics data collected by the COMPASS Collaboration in 2010 with a transversely polarised proton target, we have evaluated two types of $P_T$-weighted Sivers asymmetries, which are both proportional to the product of the firsttransverse moment of the Sivers function and of the fragmentation function. The results are compared to the standard unweighted Sivers asymmetries and used to extract the first transverse moments of the Sivers distributions for $u$ and $d$ quarks., Comment: 23 pages, 12 figures
Published: 2019

4. Odd and even partial waves of $\eta\pi^-$ and $\eta'\pi^-$ in $\pi^-p\to\eta^{(\prime)}\pi^-p$ at $191\,\textrm{GeV}/c$

Author: Adolph, C., Akhunzyanov, R., Alexeev, M. G., Alexeev, G. D., Amoroso, A., Andrieux, V., Anosov, V., Austregesilo, A., Badelek, B., Balestra, F., Barth, J., Baum, G., Beck, R., Bedfer, Y., Berlin, A., Bernhard, J., Bicker, K., Bielert, E. R., Bieling, J., Birsa, R., Bisplinghoff, J., Bodlak, M., Boer, M., Bordalo, P., Bradamante, F., Braun, C., Bressan, A., Buechele, M., Burtin, E., Capozza, L., Chiosso, M., Chung, S. U., Cicuttin, A., Crespo, M. L., Curiel, Q., Torre, S. Dalla, Dasgupta, S. S., Dasgupta, S., Denisov, O. Yu., Donskov, S. V., Doshita, N., Duic, V., Duennweber, W., Dziewiecki, M., Efremov, A., Elia, C., Eversheim, P. D., Eyrich, W., Faessler, M., Ferrero, A., Filin, A., Finger, M., Finger jr., M., Fischer, H., Franco, C., von Hohenesche, N. du Fresne, Friedrich, J. M., Frolov, V., Gautheron, F., Gavrichtchouk, O. P., Gerassimov, S., Geyer, R., Gnesi, I., Gobbo, B., Goertz, S., Gorzellik, M., Grabmueller, S., Grasso, A., Grube, B., Grussenmeyer, T., Guskov, A., Haas, F., von Harrach, D., Hahne, D., Hashimoto, R., Heinsius, F. H., Herrmann, F., Hinterberger, F., Hoeppner, Ch., Horikawa, N., d'Hose, N., Huber, S., Ishimoto, S., Ivanov, A., Ivanshin, Yu., Iwata, T., Jahn, R., Jary, V., Jasinski, P., Joerg, P., Joosten, R., Kabuss, E., Ketzer, B., Khaustov, G. V., Khokhlov, Yu. A., Kisselev, Yu., Klein, F., Klimaszewski, K., Koivuniemi, J. H., Kolosov, V. N., Kondo, K., Koenigsmann, K., Konorov, I., Konstantinov, V. F., Kotzinian, A. M., Kouznetsov, O., Kraemer, M., Kroumchtein, Z. V., Kuchinski, N., Kunne, F., Kurek, K., Kurjata, R. P., Lednev, A. A., Lehmann, A., Levillain, M., Levorato, S., Lichtenstadt, J., Maggiora, A., Magnon, A., Makke, N., Mallot, G. K., Marchand, C., Martin, A., Marzec, J., Matousek, J., Matsuda, H., Matsuda, T., Meshcheryakov, G., Meyer, W., Michigami, T., Mikhailov, Yu. V., Miyachi, Y., Nagaytsev, A., Nagel, T., Nerling, F., Neubert, S., Neyret, D., Nikolaenko, V. I., Novy, J., Nowak, W. -D., Nunes, A. S., Olshevsky, A. G., Orlov, I., Ostrick, M., Panknin, R., Panzieri, D., Parsamyan, B., Paul, S., Peshekhonov, D. V., Platchkov, S., Pochodzalla, J., Polyakov, V. A., Pretz, J., Quaresma, M., Quintans, C., Ramos, S., Regali, C., Reicherz, G., Rocco, E., Rossiyskaya, N. S., Ryabchikov, D. I., Rychter, A., Samoylenko, V. D., Sandacz, A., Sarkar, S., Savin, I. A., Sbrizzai, G., Schiavon, P., Schill, C., Schlueter, T., Schmidt, K., Schmieden, H., Schoenning, K., Schopferer, S., Schott, M., Shevchenko, O. Yu., Silva, L., Sinha, L., Sirtl, S., Slunecka, M., Sosio, S., Sozzi, F., Srnka, A., Steiger, L., Stolarski, M., Sulc, M., Sulej, R., Suzuki, H., Szabelski, A., Szameitat, T., Sznajder, P., Takekawa, S., ter Wolbeek, J., Tessaro, S., Tessarotto, F., Thibaud, F., Uhl, S., Uman, I., Virius, M., Wang, L., Weisrock, T., Wilfert, M., Windmolders, R., Wollny, H., Zaremba, K., Zavertyaev, M., Zemlyanichkina, E., Ziembicki, M., and Zink, A.
Subjects: Nuclear and High Energy Physics, +p+eta+pi%22">pi- p --> p eta pi, eta: exclusive production, mass spectrum: (eta pi-), (eta pi-) [mass spectrum], M012:Desig=3, M012:Desig=8, M012M3, QC1-999, mass spectrum: (eta(958) pi-), angular momentum, COMPASS, electroproduction [eta(958)], High Energy Physics - Experiment, Physik, Desig=8 [M012], pi- p: inelastic scattering, ddc:530, M017M, Nuclear Experiment, a2(1320), M012W3, 191 GeV/c, exclusive production [eta], Desig=3 [M012], a4(2040), M017W, Physics, (eta(958) pi-) [mass spectrum], partial wave analysis, CERN SPS, eta(958): electroproduction, M017:Desig=3, QCD, resonance, non qbarq states, ddc, M017:Desig=4, Desig=4 [M017], High Energy Physics::Experiment, inelastic scattering [pi- p], Particle Physics - Experiment, Desig=3 [M017], experimental results
Abstract: Exclusive production of $\eta\pi^-$ and $\eta'\pi^-$ has been studied with a $191\,\textrm{GeV}/c$ $\pi^-$ beam impinging on a hydrogen target at COMPASS (CERN). Partial-wave analyses reveal different odd/even angular momentum ($L$) characteristics in the inspected invariant mass range up to $3\,\textrm{GeV}/c^2$. A striking similarity between the two systems is observed for the $L=2,4,6$ intensities (scaled by kinematical factors) and the relative phases. The known resonances $a_2(1320)$ and $a_4(2040)$ are in line with this similarity. In contrast, a strong enhancement of $\eta'\pi^-$ over $\eta\pi^-$ is found for the $L=1,3,5$ waves, which carry non-$q\bar q$ quantum numbers. The $L=1$ intensity peaks at $1.7\,\textrm{GeV}/c^2$ in $\eta'\pi^-$ and at $1.4\,\textrm{GeV}/c^2$ in $\eta\pi^-$, the corresponding phase motions with respect to $L=2$ are different., Comment: 16 pages, 5 figures and 1 table
Published: 2020
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5. Search for muoproduction of X (3872) at COMPASS and indication of a new state X˜(3872)

Author: Aghasyan, M., Akhunzyanov, R., Alexeev, M. G., Alexeev, G. D., Amoroso, A., Andrieux, V., Anfimov, N. V., Anosov, V., Antoshkin, A., Augsten, K., Augustyniak, W., Austregesilo, A., Azevedo, C. D. R., Badełek, B., Balestra, F., Ball, M., Barth, J., Beck, R., Bedfer, Y., Bernhard, J., Bicker, K., Bielert, E. R., Birsa, R., Bodlak, M., Bordalo, P., Bradamante, F., Bressan, A., Büchele, M., Burtsev, V. E., Chang, W. -C., Chatterjee, C., Chiosso, M., Choi, I., Chumakov, A. G., Chung, S. -U., Cicuttin, A., Crespo, M. L., Dalla Torre, S., Dasgupta, S. S., Dasgupta, S., Denisov, O. Yu., Dhara, L., Donskov, S. V., Doshita, N., Dreisbach, Ch., Dünnweber, W., Dusaev, R. R., Dziewiecki, M., Efremov, A., Eversheim, P. D., Faessler, M., Ferrero, A., Finger, M., Fischer, H., Franco, C., du Fresne von Hohenesche, N., Friedrich, J. M., Frolov, V., Fuchey, E., Gautheron, F., Gavrichtchouk, O. P., Gerassimov, S., Giarra, J., Giordano, F., Gnesi, I., Gorzellik, M., Grasso, A., Gridin, A., Grosse Perdekamp, M., Grube, B., Grussenmeyer, T., Guskov, A., Hahne, D., Hamar, G., von Harrach, D., Heinsius, F. H., Heitz, R., Herrmann, F., Horikawa, N., D'Hose, N., Hsieh, C. -Y., Huber, S., Ishimoto, S., Ivanov, A., Ivanshin, Yu., Iwata, T., Jary, V., Joosten, R., Jörg, P., Kabuß, E., Kerbizi, A., Ketzer, B., Khaustov, G. V., Khokhlov, Yu. A., Kisselev, Yu., Klein, F., Koivuniemi, J. H., Kolosov, V. N., Kondo, K., Königsmann, K., Konorov, I., Konstantinov, V. F., Kotzinian, A. M., Kouznetsov, O. M., Kral, Z., Krämer, M., Kremser, P., Krinner, F., Kroumchtein, Z. V., Kulinich, Y., Kunne, F., Kurek, K., Kurjata, R. P., Kuznetsov, I. I., Kveton, A., Lednev, A. A., Levchenko, E. A., Levillain, M., Levorato, S., Lian, Y. -S., Lichtenstadt, J., Longo, R., Lyubovitskij, V. E., Maggiora, A., Magnon, A., Makins, N., Makke, N., Mallot, G. K., Mamon, S. A., Marianski, B., Martin, A., Marzec, J., Matoušek, J., Matsuda, H., Matsuda, T., Meshcheryakov, G. V., Meyer, M., Meyer, W., Mikhailov, Yu. V., Mikhasenko, M., Mitrofanov, E., Mitrofanov, N., Miyachi, Y., Nagaytsev, A., Nerling, F., Neyret, D., Nový, J., Nowak, W. -D., Nukazuka, G., Nunes, A. S., Olshevsky, A. G., Orlov, I., Ostrick, M., Panzieri, D., Parsamyan, B., Paul, S., Peng, J. -C., Pereira, F., Pešek, M., Pešková, M., Peshekhonov, D. V., Pierre, N., Platchkov, S., Pochodzalla, J., Polyakov, V. A., Pretz, J., Quaresma, M., Quintans, C., Ramos, S., Regali, C., Reicherz, G., Riedl, C., Rogacheva, N. S., Ryabchikov, D. I., Rybnikov, A., Rychter, A., Salac, R., Samoylenko, V. D., Sandacz, A., Santos, C., Sarkar, S., Savin, I. A., Sawada, T., Sbrizzai, G., Schiavon, P., Schmidt, K., Schmieden, H., Schönning, K., Seder, E., Selyunin, A., Silva, L., Sinha, L., Sirtl, S., Slunecka, M., Smolik, J., Srnka, A., Steffen, D., Stolarski, M., Subrt, O., Sulc, M., Suzuki, H., Szabelski, A., Szameitat, T., Sznajder, P., Tasevsky, M., Tessaro, S., Tessarotto, F., Thiel, A., Tomsa, J., Tosello, F., Tskhay, V., Uhl, S., Vasilishin, B. I., Vauth, A., Veloso, J., Vidon, A., Virius, M., Wallner, S., Weisrock, T., Wilfert, M., ter Wolbeek, J., Zaremba, K., Zavada, P., Zavertyaev, M., Zemlyanichkina, E., Zhuravlev, N., Ziembicki, M., Aghasyan, M., Akhunzyanov, R., Alexeev, M. G., Alexeev, G. D., Amoroso, A., Andrieux, V., Anfimov, N. V., Anosov, V., Antoshkin, A., Augsten, K., Augustyniak, W., Austregesilo, A., Azevedo, C. D. R., Badełek, B., Balestra, F., Ball, M., Barth, J., Beck, R., Bedfer, Y., Bernhard, J., Bicker, K., Bielert, E. R., Birsa, R., Bodlak, M., Bordalo, P., Bradamante, F., Bressan, A., Büchele, M., Burtsev, V. E., Chang, W. -C., Chatterjee, C., Chiosso, M., Choi, I., Chumakov, A. G., Chung, S. -U., Cicuttin, A., Crespo, M. L., Dalla Torre, S., Dasgupta, S. S., Dasgupta, S., Denisov, O. Yu., Dhara, L., Donskov, S. V., Doshita, N., Dreisbach, Ch., Dünnweber, W., Dusaev, R. R., Dziewiecki, M., Efremov, A., Eversheim, P. D., Faessler, M., Ferrero, A., Finger, M., Fischer, H., Franco, C., du Fresne von Hohenesche, N., Friedrich, J. M., Frolov, V., Fuchey, E., Gautheron, F., Gavrichtchouk, O. P., Gerassimov, S., Giarra, J., Giordano, F., Gnesi, I., Gorzellik, M., Grasso, A., Gridin, A., Grosse Perdekamp, M., Grube, B., Grussenmeyer, T., Guskov, A., Hahne, D., Hamar, G., von Harrach, D., Heinsius, F. H., Heitz, R., Herrmann, F., Horikawa, N., D'Hose, N., Hsieh, C. -Y., Huber, S., Ishimoto, S., Ivanov, A., Ivanshin, Yu., Iwata, T., Jary, V., Joosten, R., Jörg, P., Kabuß, E., Kerbizi, A., Ketzer, B., Khaustov, G. V., Khokhlov, Yu. A., Kisselev, Yu., Klein, F., Koivuniemi, J. H., Kolosov, V. N., Kondo, K., Königsmann, K., Konorov, I., Konstantinov, V. F., Kotzinian, A. M., Kouznetsov, O. M., Kral, Z., Krämer, M., Kremser, P., Krinner, F., Kroumchtein, Z. V., Kulinich, Y., Kunne, F., Kurek, K., Kurjata, R. P., Kuznetsov, I. I., Kveton, A., Lednev, A. A., Levchenko, E. A., Levillain, M., Levorato, S., Lian, Y. -S., Lichtenstadt, J., Longo, R., Lyubovitskij, V. E., Maggiora, A., Magnon, A., Makins, N., Makke, N., Mallot, G. K., Mamon, S. A., Marianski, B., Martin, A., Marzec, J., Matoušek, J., Matsuda, H., Matsuda, T., Meshcheryakov, G. V., Meyer, M., Meyer, W., Mikhailov, Yu. V., Mikhasenko, M., Mitrofanov, E., Mitrofanov, N., Miyachi, Y., Nagaytsev, A., Nerling, F., Neyret, D., Nový, J., Nowak, W. -D., Nukazuka, G., Nunes, A. S., Olshevsky, A. G., Orlov, I., Ostrick, M., Panzieri, D., Parsamyan, B., Paul, S., Peng, J. -C., Pereira, F., Pešek, M., Pešková, M., Peshekhonov, D. V., Pierre, N., Platchkov, S., Pochodzalla, J., Polyakov, V. A., Pretz, J., Quaresma, M., Quintans, C., Ramos, S., Regali, C., Reicherz, G., Riedl, C., Rogacheva, N. S., Ryabchikov, D. I., Rybnikov, A., Rychter, A., Salac, R., Samoylenko, V. D., Sandacz, A., Santos, C., Sarkar, S., Savin, I. A., Sawada, T., Sbrizzai, G., Schiavon, P., Schmidt, K., Schmieden, H., Schönning, K., Seder, E., Selyunin, A., Silva, L., Sinha, L., Sirtl, S., Slunecka, M., Smolik, J., Srnka, A., Steffen, D., Stolarski, M., Subrt, O., Sulc, M., Suzuki, H., Szabelski, A., Szameitat, T., Sznajder, P., Tasevsky, M., Tessaro, S., Tessarotto, F., Thiel, A., Tomsa, J., Tosello, F., Tskhay, V., Uhl, S., Vasilishin, B. I., Vauth, A., Veloso, J., Vidon, A., Virius, M., Wallner, S., Weisrock, T., Wilfert, M., ter Wolbeek, J., Zaremba, K., Zavada, P., Zavertyaev, M., Zemlyanichkina, E., Zhuravlev, N., and Ziembicki, M.
Subjects: X(3872), Photoproduction, Tetraquark, COMPASS, Exotic charmonia
Abstract: We have searched for exclusive production of exotic charmonia in the reaction μ+N → μ+( J/ψπ+π−)π±N using COMPASS data collected with incoming muons of 160 GeV/c and 200 GeV/c momentum. In the J/ψπ+π− mass distribution we observe a signal with a statistical significance of 4.1 σ. Its mass and width are consistent with those of the X(3872). The shape of the π+π− mass distribution from the observed decay into J/ψπ+π− shows disagreement with previous observations for X(3872). The observed signal may be interpreted as a possible evidence of a new charmonium state. It could be associated with a neutral partner of X(3872) with C = −1 predicted by a tetraquark model. The product of cross section and branching fraction of the decay of the observed state into J/ψπ+π− is determined to be 71±28(stat)±39(syst) pb
Published: 2018

6. Transverse-momentum-dependent Multiplicities of Charged Hadrons in Muon-Deuteron Deep Inelastic Scattering

Author: Aghasyan, M., Akhunzyanov, R., Alexeev, M. G., Alexeev, G. D., Amoroso, A., Andrieux, V., Anfimov, N. V., Anosov, V., Antoshkin, A., Augsten, K., Augustyniak, W., Austregesilo, A., Azevedo, C. D. R., Badelek, B., Balestra, F., Ball, M., Barth, J., Beck, R., Bedfer, Y., Bernhard, J., Bicker, K., Bielert, E. R., Birsa, R., Bodlak, M., Bordalo, P., Bradamante, F., Bressan, A., Buechele, M., Burtsev, V. E., Capozza, L., Chang, W. -C., Chatterjee, C., Chiosso, M., Choi, I., Chumakov, A. G., Chung, S. -U., Cicuttin, A., Crespo, M. L., Curiel, Q., Torre, S. Dalla, Dasgupta, S. S., Dasgupta, S., Denisov, O. Yu., Dhara, L., Donskov, S. V., Doshita, N., Dreisbach, Ch., Duennweber, W., Dusaev, R. R., Dziewiecki, M., Efremov, A., Eversheim, P. D., Faessler, M., Ferrero, A., Finger, M., Fischer, H., Franco, C., von Hohenesche, N. du Fresne, Friedrich, J. M., Frolov, V., Fuchey, E., Gautheron, F., Gavrichtchouk, O. P., Gerassimov, S., Giarra, J., Giordano, F., Gnesi, I., Gorzellik, M., Grasso, A., Gridin, A., Perdekamp, M. Grosse, Grube, B., Grussenmeyer, T., Guskov, A., Hahne, D., Hamar, G., von Harrach, D., Heinsius, F. H., Heitz, R., Herrmann, F., Horikawa, N., d'Hose, N., Hsieh, C. -Y., Huber, S., Ishimoto, S., Ivanov, A., Ivanshin, Yu., Iwata, T., Jary, V., Joosten, R., Joerg, P., Kabuss, E., Kerbizi, A., Ketzer, B., Khaustov, G. V., Khokhlov, Yu. A., Kisselev, Yu., Klein, F., Koivuniemi, J. H., Kolosov, V. N., Kondo, K., Koenigsmann, K., Konorov, I., Konstantinov, V. F., Kotzinian, A. M., Kouznetsov, O. M., Kral, Z., Kraemer, M., Kremser, P., Krinner, F., Kroumchtein, Z. V., Kulinich, Y., Kunne, F., Kurek, K., Kurjata, R. P., Kuznetsov, I. I., Kveton, A., Lednev, A. A., Levchenko, E. A., Levillain, M., Levorato, S., Lian, Y. -S., Lichtenstadt, J., Longo, R., Lyubovitskij, V. E., Maggiora, A., Magnon, A., Makins, N., Makke, N., Mallot, G. K., Mamon, S. A., Marianski, B., Martin, A., Marzec, J., Matousek, J., Matsuda, H., Matsuda, T., Meshcheryakov, G. V., Meyer, M., Meyer, W., Mikhailov, Yu. V., Mikhasenko, M., Mitrofanov, E., Mitrofanov, N., Miyachi, Y., Moretti, A., Nagaytsev, A., Nerling, F., Neyret, D., Novy, J., Nowak, W. -D., Nukazuka, G., Nunes, A. S., Olshevsky, A. G., Orlov, I., Ostrick, M., Panzieri, D., Parsamyan, B., Paul, S., Peng, J. -C., Pereira, F., Pesek, M., Peskova, M., Peshekhonov, D. V., Pierre, N., Platchkov, S., Pochodzalla, J., Polyakov, V. A., Pretz, J., Quaresma, M., Quintans, C., Ramos, S., Regali, C., Reicherz, G., Riedl, C., Rogacheva, N. S., Ryabchikov, D. I., Rybnikov, A., Rychter, A., Salac, R., Samoylenko, V. D., Sandacz, A., Santos, C., Sarkar, S., Savin, I. A., Sawada, T., Sbrizzai, G., Schiavon, P., Schmidt, K., Schmieden, H., Schoenning, K., Seder, E., Selyunin, A., Silva, L., Sinha, L., Sirtl, S., Slunecka, M., Smolik, J., Srnka, A., Steffen, D., Stolarski, M., Subrt, O., Sulc, M., Suzuki, H., Szabelski, A., Szameitat, T., Sznajder, P., Tasevsky, M., Tessaro, S., Tessarotto, F., Thiel, A., Tomsa, J., Tosello, F., Tskhay, V., Uhl, S., Vasilishin, B. I., Vauth, A., Veloso, J., Vidon, A., Virius, M., Wallner, S., Weisrock, T., Wilfert, M., ter Wolbeek, J., Zaremba, K., Zavada, P., Zavertyaev, M., Zemlyanichkina, E., Zhuravlev, N., Ziembicki, M., Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, COMPASS, Aghasyan, M., Alexeev, M. G., Alexeev, G. D., Amoroso, A., Andrieux, V., Anfimov, N. V., Anosov, V., Antoshkin, A., Augsten, K., Augustyniak, W., Austregesilo, A., Azevedo, C. D. R., Badełek, B., Balestra, F., Ball, M., Barth, J., Beck, R., Bedfer, Y., Bernhard, J., Bicker, K., Bielert, E. R., Birsa, R., Bodlak, M., Bordalo, P., Bradamante, F., Bressan, A., Büchele, M., Burtsev, V. E., Capozza, L., Chang, W. -C., Chatterjee, C., Chiosso, M., Choi, I., Chumakov, A. G., Chung, S. -U., Cicuttin, A., Crespo, M. L., Curiel, Q., Dalla Torre, S., Dasgupta, S. S., Dasgupta, S., Denisov, O. Yu., Dhara, L., Donskov, S. V., Doshita, N., Dreisbach, Ch., Dünnweber, W., Dusaev, R. R., Dziewiecki, M., Efremov, A., Eversheim, P. D., Faessler, M., Ferrero, A., Finger, M., Fischer, H., Franco, C., du Fresne von Hohenesche, N., Friedrich, J. M., Frolov, V., Fuchey, E., Gautheron, F., Gavrichtchouk, O. P., Gerassimov, S., Giarra, J., Giordano, F., Gnesi, I., Gorzellik, M., Grasso, A., Gridin, A., Grosse Perdekamp, M., Grube, B., Grussenmeyer, T., Guskov, A., Hahne, D., Hamar, G., von Harrach, D., Heinsius, F. H., Heitz, R., Herrmann, F., Horikawa, N., D’Hose, N., Hsieh, C. -Y., Huber, S., Ishimoto, S., Ivanov, A., Iwata, T., Jary, V., Joosten, R., Jörg, P., Kabuß, E., Kerbizi, A., Ketzer, B., Khaustov, G. V., Khokhlov, Yu. A., Kisselev, Yu., Klein, F., Koivuniemi, J. H., Kolosov, V. N., Kondo, K., Königsmann, K., Konorov, I., Konstantinov, V. F., Kotzinian, A. M., Kouznetsov, O. M., Kral, Z., Krämer, M., Kremser, P., Krinner, F., Kroumchtein, Z. V., Kulinich, Y., Kunne, F., Kurek, K., Kurjata, R. P., Kuznetsov, I. I., Kveton, A., Lednev, A. A., Levchenko, E. A., Levillain, M., Levorato, S., Lian, Y. -S., Lichtenstadt, J., Longo, R., Lyubovitskij, V. E., Maggiora, A., Magnon, A., Makins, N., Makke, N., Mallot, G. K., Mamon, S. A., Marianski, B., Martin, A., Marzec, J., Matoušek, J., Matsuda, H., Matsuda, T., Meshcheryakov, G. V., Meyer, M., Meyer, W., Mikhailov, Yu. V., Mikhasenko, M., Mitrofanov, E., Mitrofanov, N., Miyachi, Y., Moretti, A., Nagaytsev, A., Nerling, F., Neyret, D., Nový, J., Nowak, W. -D., Nukazuka, G., Nunes, A. S., Olshevsky, A. G., Orlov, I., Ostrick, M., Panzieri, D., Parsamyan, B., Paul, S., Peng, J. -C., Pereira, F., Pešek, M., Pešková, M., Peshekhonov, D. V., Pierre, N., Platchkov, S., Pochodzalla, J., Polyakov, V. A., Pretz, J., Quaresma, M., Quintans, C., Ramos, S., Regali, C., Reicherz, G., Riedl, C., Rogacheva, N. S., Ryabchikov, D. I., Rybnikov, A., Rychter, A., Salac, R., Samoylenko, V. D., Sandacz, A., Santos, C., Sarkar, S., Savin, I. A., Sawada, T., Sbrizzai, G., Schiavon, P., Schmidt, K., Schmieden, H., Schönning, K., Seder, E., Selyunin, A., Silva, L., Sinha, L., Sirtl, S., Slunecka, M., Smolik, J., Srnka, A., Steffen, D., Stolarski, M., Subrt, O., Sulc, M., Suzuki, H., Szabelski, A., Szameitat, T., Sznajder, P., Tasevsky, M., Tessaro, S., Tessarotto, F., Thiel, A., Tomsa, J., Tosello, F., Tskhay, V., Uhl, S., Vasilishin, B. I., Vauth, A., Veloso, J., Vidon, A., Virius, M., Wallner, S., Weisrock, T., Wilfert, M., ter Wolbeek, J., Zaremba, K., Zavada, P., Zavertyaev, M., Zemlyanichkina, E., Ziembicki, M., Institut de Recherches sur les lois Fondamentales de l'Univers ( IRFU ), and Commissariat à l'énergie atomique et aux énergies alternatives ( CEA ) -Université Paris-Saclay
Subjects: CERN Lab, ComputerSystemsOrganization_COMPUTERSYSTEMIMPLEMENTATION, MULTIPLICITIES, dimension: 3, PT DEPENDENT, ComputingMethodologies_IMAGEPROCESSINGANDCOMPUTERVISION, FOS: Physical sciences, ComputerApplications_COMPUTERSINOTHERSYSTEMS, target: isoscalar, muon deuteron: deep inelastic scattering, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], nucl-ex, transverse momentum dependence, hadron: transverse momentum, SIDIS, COMPASS, GeneralLiterature_MISCELLANEOUS, High Energy Physics - Experiment, scaling: Bjorken, Subatomär fysik, charged particle: multiplicity, High Energy Physics - Experiment (hep-ex), [ PHYS.HEXP ] Physics [physics]/High Energy Physics - Experiment [hep-ex], mass: hadronic, Subatomic Physics, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], Nuclear Physics - Experiment, [ PHYS.NEXP ] Physics [physics]/Nuclear Experiment [nucl-ex], Nuclear Experiment (nucl-ex), quantum chromodynamics: perturbation theory, Nuclear Experiment, DIS, hep-ex, hadron: multiplicity, effect: nonperturbative, perturbation theory: higher-order, CERN SPS, photon: energy, semi-inclusive reaction, ComputingMethodologies_PATTERNRECOGNITION, kinematics, High Energy Physics::Experiment, Particle Physics - Experiment, experimental results, photon: virtual
Abstract: A semi-inclusive measurement of charged hadron multiplicities in deep inelastic muon scattering off an isoscalar target was performed using data collected by the COMPASS Collaboration at CERN. The following kinematic domain is covered by the data: photon virtuality $Q^{2}>1$ (GeV/$c$)$^2$, invariant mass of the hadronic system $W > 5$ GeV/$c^2$, Bjorken scaling variable in the range $0.003 < x < 0.4$, fraction of the virtual photon energy carried by the hadron in the range $0.2 < z < 0.8$, square of the hadron transverse momentum with respect to the virtual photon direction in the range 0.02 (GeV/$c)^2 < P_{\rm{hT}}^{2} < 3$ (GeV/$c$)$^2$. The multiplicities are presented as a function of $P_{\rm{hT}}^{2}$ in three-dimensional bins of $x$, $Q^2$, $z$ and compared to previous semi-inclusive measurements. We explore the small-$P_{\rm{hT}}^{2}$ region, i.e. $P_{\rm{hT}}^{2} < 1$ (GeV/$c$)$^2$, where hadron transverse momenta are expected to arise from non-perturbative effects, and also the domain of larger $P_{\rm{hT}}^{2}$, where contributions from higher-order perturbative QCD are expected to dominate. The multiplicities are fitted using a single-exponential function at small $P_{\rm{hT}}^{2}$ to study the dependence of the average transverse momentum $\langle P_{\rm{hT}}^{2}\rangle$ on $x$, $Q^2$ and $z$. The power-law behaviour of the multiplicities at large $P_{\rm{hT}}^{2}$ is investigated using various functional forms. The fits describe the data reasonably well over the full measured range., 28 pages, 20 figures
Published: 2018

7. Measurement of the cross section for hard exclusive $\pi^0$ leptoproduction

Author: Alexeev, M. G., Alexeev, G. D., Amoroso, A., Andrieux, V., Anfimov, N. V., Anosov, V., Antoshkin, A., Augsten, K., Augustyniak, W., Azevedo, C. D. R., Badelek, B., Balestra, F., Ball, M., Barth, J., Beck, R., Bedfer, Y., Bernhard, J., Bodlak, M., Bordalo, P., Bradamante, F., Bressan, A., Buechele, M., Burtsev, V. E., Chang, W. -C., Chatterjee, C., Chiosso, M., Chumakov, A. G., Chung, S. -U., Cicuttin, A., Crespo, M. L., Torre, S. Dalla, Dasgupta, S. S., Dasgupta, S., Denisov, O. Yu., Dhara, L., Donskov, S. V., Doshita, N., Dreisbach, Ch., Duennweber, W., Dusaev, R. R., Efremov, A., Eversheim, P. D., Faessler, M., Ferrero, A., Finger, M., Finger jr., M., Fischer, H., Franco, C., von Hohenesche, N. du Fresne, Friedrich, J. M., Frolov, V., Fuchey, E., Gautheron, F., Gavrichtchouk, O. P., Gerassimov, S., Giarra, J., Gnesi, I., Gorzellik, M., Grasso, A., Gridin, A., Perdekamp, M. Grosse, Grube, B., Guskov, A., Hahne, D., Hamar, G., von Harrach, D., Heitz, R., Herrmann, F., Horikawa, N., d'Hose, N., Hsieh, C. -Y., Huber, S., Ishimoto, S., Ivanov, A., Iwata, T., Jandek, M., Jary, T., Joosten, R., Joerg, P., Juraskova, K., Kabuss, E., Kaspar, F., Kerbizi, A., Ketzer, B., Khaustov, G. V., Khokhlov, Yu. A., Kisselev, Yu., Klein, F., Koivuniemi, J. H., Kolosov, V. N., Kondo, K., Konorov, I., Konstantinov, V. F., Kotzinian, A. M., Kouznetsov, O. M., Kral, Z., Kraemer, M., Krinner, F., Kroumchtein, Z. V., Kulinich, Y., Kunne, F., Kurek, K., Kurjata, R. P., Kveton, A., Levorato, S., Lian, Y. -S., Lichtenstadt, J., Lin, P. -J., Longo, R., Lyubovitskij, V. E., Maggiora, A., Magnon, A., Makins, N., Makke, N., Mallot, G. K., Mamon, S. A., Marianski, B., Martin, A., Marzec, J., Matousek, J., Matsuda, T., Meshcheryakov, G. V., Meyer, M., Meyer, W., Mikhailov, Yu. V., Mikhasenko, M., Mitrofanov, E., Mitrofanov, N., Miyachi, Y., Moretti, A., Naim, C., Nagaytsev, A., Neyret, D., Novy, J., Nowak, W. -D., Nukazuka, G., Nunes, A. S., Olshevskiy, A. G., Ostrick, M., Panzieri, D., Parsamyan, B., Paul, S., Peng, J. -C., Pereira, F., Pesek, M., Peshekhonov, D. V., Peskova, M., Pierre, N., Platchkov, S., Pochodzalla, J., Polyakov, V. A., Pretz, J., Quaresma, M., Quintans, C., Ramos, S., Regali, C., Reicherz, G., Riedl, C., Ryabchikov, D. I., Rybnikov, A., Rychter, A., Samoylenko, V. D., Sandacz, A., Sarkar, S., Savin, I. A., Sbrizzai, G., Schmieden, H., Selyunin, A., Silva, L., Sinha, L., Slunecka, M., Smolik, J., Srnka, A., Steffen, D., Stolarski, M., Subrt, O., Sulc, M., Suzuki, H., Szabelski, A., Szameitat, T., Sznajder, P., Tessaro, S., Tessarotto, F., Thiel, A., Tomsa, J., Tosello, F., Tskhay, V., Uhl, S., Vasilishin, B. I., Vauth, A., Veit, B. M., Veloso, J., Vidon, A., Virius, M., Wagner, M., Wallner, S., Wilfert, M., Zaremba, K., Zavada, P., Zavertyaev, M., Zemlyanichkina, E., Zhao, Y., Ziembicki, M., Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, and COMPASS
Subjects: exclusive reaction, generalized parton distribution, hep-ex, muon: beam, polarization: longitudinal, interference, cross section: measured, COMPASS, High Energy Physics - Experiment, photon: polarization, angular dependence, pi0: leptoproduction, hydrogen: liquid: target, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], polarization: transverse, Particle Physics - Experiment, experimental results
Abstract: We report on a measurement of hard exclusive $\pi^0$ muoproduction on the proton by COMPASS using 160 GeV/$c$ polarised $\mu^+$ and $\mu^-$ beams of the CERN SPS impinging on a liquid hydrogen target. From the average of the measured $\mu^+$ and $\mu^-$ cross sections, the virtual-photon proton cross section is determined as a function of the squared four-momentum transfer between initial and final proton in the range $0.08\,(\text{GeV/}c)^2 < |t| < 0.64\,(\text{GeV/}c)^2$. The average kinematics of the measurement are $\langle Q^2 \rangle =2.0\; {(\text{GeV}/c)^2}$, $\langle \nu \rangle = 12.8\; {\text{GeV}}$, $\langle x_{Bj} \rangle = 0.093 $ and $\langle -t \rangle = 0.256\; {(\text{GeV}/c)^2} $. Fitting the azimuthal dependence reveals a combined contribution by transversely and longitudinally polarised photons of $(8.1 \ \pm \ 0.9_{\text{stat}}{}_{- \ 1.0}^{+ \ 1.1}\big\rvert_{\text{sys}})\,{\text{nb}}/{(\text{GeV}/c)^{2}}$, as well as transverse-transverse and longitudinal-transverse interference contributions of $(-6.0 \pm 1.3_{\text{stat}}{}_{- \ 0.7}^{+ \ 0.7}\big\rvert_{\text{sys}})\,{\text{nb}}/{(\text{GeV}/c)^{2}}$ and $(1.4 \pm 0.5_{\text{stat}}{}_{- \ 0.2}^{+ \ 0.3}\big\rvert_{\text{sys}})\,{\text{nb}}/{(\text{GeV}/c)^{2}}$, respectively. Our results provide important input for modelling Generalised Parton Distributions. In the context of the phenomenological Goloskokov-Kroll model, the statistically significant transverse-transverse interference contribution constitutes clear experimental evidence for the chiral-odd GPD $\overline{E}_T$., Comment: 9 pages, 5 figures
Published: 2019

8. First Measurement of Transverse-Spin-Dependent Azimuthal Asymmetries in the Drell-Yan Process

Author: Aghasyan, M., Akhunzyanov, R., Alexeev, G. D., Alexeev, M. G., Amoroso, A., Andrieux, V., Anfimov, N. V., Anosov, V., Antoshkin, A., Augsten, K., Augustyniak, W., Austregesilo, A., Azevedo, C. D. R., Badelek, B., Balestra, F., Ball, M., Barth, J., Beck, R., Bedfer, Y., Bernhard, J., Bicker, K., Bielert, E. R., Birsa, R., Bodlak, M., Bordalo, P., Bradamante, F., Bressan, A., Buchele, M., Cchang, W. -C, Chatterjee, C., Chiosso, M., Choi, I., Chung, S. -U, Cicuttin, A., Crespo, M. L., Dalla Torre, S., Dasgupta, S. S., Dasgupta, S., Denisov, O. Yu., Dhara, L., Donskov, S. V., Doshita, N., Dreisbach, Ch., Duennweber, W., Dziewiecki, M., Efremov, A., Eversheim, P. D., Faessler, M., Ferrero, A., Finger, M., Finger, M., Jr., Fischer, H., Franco, C., von Hohenesche, N. du Fresne, Friedrich, J. M., Frolov, V., Fuchey, E., Gautheron, F., Gavrichtchouk, O. P., Gerassimov, S., Giarra, J., Giordano, F., Gnesi, I., Gorzellik, M., Grasso, A., Perdekamp, M. Grosse, Grube, B., Grussenmeyer, T., Guskov, A., Hahne, D., Hamar, G., von Harrach, D., Heinsius, F. H., Heitz, R., Herrmann, F., Horikawa, N., d'Hose, N., Hsieh, C. -Y, Huber, S., Ishimoto, S., Ivanov, A., Ivanshin, Yu., Iwata, T., Jary, V., Joosten, R., Joerg, P., Kabuss, E., Kerbizi, A., Ketzer, B., Khaustov, G. V., Khokhlov, Yu. A., Kisselev, Yu., Klein, F., Koivuniemi, J. H., Kolosov, V. N., Kondo, K., Koenigsmann, K., Konorov, I., Konstantinov, V. F., Kotzinian, A. M., Kouznetsov, O. M., Kral, Z., Kraemer, M., Kremser, P., Krinner, F., Kroumchtein, Z. V., Kulinich, Y., Kunne, F., Kurek, K., Kurjata, R. P., Kveton, A., Lednev, A. A., Levillain, M., Levorato, S., Lian, Y. -S, Lichtenstadt, J., Longo, R., Maggiora, A., Magnon, A., Makins, N., Makke, N., Mallot, G. K., Marianski, B., Martin, A., Marzec, J., Matousek, J., Matsuda, H., Matsuda, T., Meshcheryakov, G. V., Meyer, M., Meyer, W., Mikhailov, Yu. V., Mikhasenko, M., Mitrofanov, E., Mitrofanov, N., Miyachi, Y., Nagaytsev, A., Nerling, F., Neyret, D., Novy, J., Nowak, W. -D, Nukazuka, G., Nunes, A. S., Olshevsky, A. G., Orlov, I., Ostrick, M., Panzieri, D., Parsamyan, B., Paul, S., Peng, J. -C, Pereira, F., Pesek, M., Peshekhonov, D. V., Pierre, N., Platchkov, S., Pochodzalla, J., Polyakov, V. A., Pretz, J., Quaresma, M., Quintans, C., Ramos, S., Regali, C., Reicherz, G., Riedl, C., Rogacheva, N. S., Roskot, M., Ryabchikov, D. I., Rybnikov, A., Rychter, A., Salac, R., Samoylenko, V. D., Sandacz, A., Santos, C., Sarkar, S., Savin, I. A., Sawada, T., Sbrizzai, G., Schiavon, P., Schmidt, K., Schmieden, H., Schönning, Karin, Seder, E., Selyunin, A., Shevchenko, O. Yu., Silva, L., Sinha, L., Sirtl, S., Slunecka, M., Smolik, J., Srnka, A., Steffen, D., Stolarski, M., Subrt, O., Sulc, M., Suzuki, H., Szabelski, A., Szameitat, T., Sznajder, P., Takewaka, S., Tasevsky, M., Tessaro, S., Terca, G., Tessarotto, F., Thiel, A., Tomsa, J., Tosello, F., Tskhay, V., Uhl, S., Vauth, A., Veloso, J., Virius, M., Vit, M., Vondra, J., Wallner, S., Weisrock, T., Wilfert, M., ter Wolbeek, J., Zaremba, K., Zavada, P., Zavertyaev, M., Zemlyanichkina, E., Zhuravlev, N., Ziembicki, M., Aghasyan, M., Akhunzyanov, R., Alexeev, G. D., Alexeev, M. G., Amoroso, A., Andrieux, V., Anfimov, N. V., Anosov, V., Antoshkin, A., Augsten, K., Augustyniak, W., Austregesilo, A., Azevedo, C. D. R., BadeÅ‚ek, B., Balestra, F., Ball, M., Barth, J., Beck, R., Bedfer, Y., Bernhard, J., Bicker, K., Bielert, E. R., Birsa, R., Bodlak, M., Bordalo, P., Bradamante, F., Bressan, A., Bã¼chele, M., Chang, W. -. C., Chatterjee, C., Chiosso, M., Choi, I., Chung, S. -. U., Cicuttin, A., Crespo, M. L., Dalla Torre, S., Dasgupta, S. S., Dasgupta, S., Denisov, O. Y. u., Dhara, L., Donskov, S. V., Doshita, N., Dreisbach, C. h., Dã¼nnweber, W., Dziewiecki, M., Efremov, A., Eversheim, P. D., Faessler, M., Ferrero, A., Finger, M., Fischer, H., Franco, C., Du Fresne Von Hohenesche, N., Friedrich, J. M., Frolov, V., Fuchey, E., Gautheron, F., Gavrichtchouk, O. P., Gerassimov, S., Giarra, J., Giordano, F., Gnesi, I., Gorzellik, M., Grasso, A., Grosse Perdekamp, M., Grube, B., Grussenmeyer, T., Guskov, A., Hahne, D., Hamar, G., Von Harrach, D., Heinsius, F. H., Heitz, R., Herrmann, F., Horikawa, N., D'Hose, N., Hsieh, C. -. Y., Huber, S., Ishimoto, S., Ivanov, A., Ivanshin, Y. u., Iwata, T., Jary, V., Joosten, R., Jã¶rg, P., Kabuãÿ, E., Kerbizi, A., Ketzer, B., Khaustov, G. V., Khokhlov, Y. u. A., Kisselev, Y. u., Klein, F., Koivuniemi, J. H., Kolosov, V. N., Kondo, K., Kã¶nigsmann, K., Konorov, I., Konstantinov, V. F., Kotzinian, A. M., Kouznetsov, O. M., Kral, Z., Krã¤mer, M., Kremser, P., Krinner, F., Kroumchtein, Z. V., Kulinich, Y., Kunne, F., Kurek, K., Kurjata, R. P., Kveton, A., Lednev, A. A., Levillain, M., Levorato, S., Lian, Y. -. S., Lichtenstadt, J., Longo, R., Maggiora, A., Magnon, A., Makins, N., Makke, N., Mallot, G. K., Marianski, B., Martin, A., Marzec, J., Matouå¡ek, J., Matsuda, H., Matsuda, T., Meshcheryakov, G. V., Meyer, M., Meyer, W., Mikhailov, Y. u. V., Mikhasenko, M., Mitrofanov, E., Mitrofanov, N., Miyachi, Y., Nagaytsev, A., Nerling, F., Neyret, D., Novã½, J., Nowak, W. -. D., Nukazuka, G., Nunes, A. S., Olshevsky, A. G., Orlov, I., Ostrick, M., Panzieri, D., Parsamyan, B., Paul, S., Peng, J. -. C., Pereira, F., Peå¡ek, M., Peshekhonov, D. V., Pierre, N., Platchkov, S., Pochodzalla, J., Polyakov, V. A., Pretz, J., Quaresma, M., Quintans, C., Ramos, S., Regali, C., Reicherz, G., Riedl, C., Rogacheva, N. S., Roskot, M., Ryabchikov, D. I., Rybnikov, A., Rychter, A., Salac, R., Samoylenko, V. D., Sandacz, A., Santos, C., Sarkar, S., Savin, I. A., Sawada, T., Sbrizzai, G., Schiavon, P., Schmidt, K., Schmieden, H., Schã¶nning, K., Seder, E., Selyunin, A., Shevchenko, O. Y. u., Silva, L., Sinha, L., Sirtl, S., Slunecka, M., Smolik, J., Srnka, A., Steffen, D., Stolarski, M., Subrt, O., Sulc, M., Suzuki, H., Szabelski, A., Szameitat, T., Sznajder, P., Takewaka, S., Tasevsky, M., Tessaro, S., Terã§a, G., Tessarotto, F., Thiel, A., Tomsa, J., Tosello, F., Tskhay, V., Uhl, S., Vauth, A., Veloso, J., Virius, M., Vit, M., Vondra, J., Wallner, S., Weisrock, T., Wilfert, M., Ter Wolbeek, J., Zaremba, K., Zavada, P., Zavertyaev, M., Zemlyanichkina, E., Zhuravlev, N., Ziembicki, M., Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, Commissariat à l'énergie atomique et aux énergies alternatives (CEA), COMPASS, Institut de Recherches sur les lois Fondamentales de l'Univers ( IRFU ), Commissariat à l'énergie atomique et aux énergies alternatives ( CEA ) -Université Paris-Saclay, and Commissariat à l'énergie atomique et aux énergies alternatives ( CEA )
Subjects: Drell-Yan process, ComputerSystemsOrganization_COMPUTERSYSTEMIMPLEMENTATION, Nuclear Theory, General Physics and Astronomy, parton: distribution function, transverse momentum dependence, 01 natural sciences, COMPASS, High Energy Physics - Experiment, Sivers function, High Energy Physics - Experiment (hep-ex), semi-inclusive reaction [deep inelastic scattering], High Energy Physics - Phenomenology (hep-ph), ddc:550, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], Nuclear Experiment, transversity, Physics, Quantum chromodynamics, (muon+ muon-) [mass spectrum], Large Hadron Collider, deep inelastic scattering: semi-inclusive reaction, polarized target: transverse, 190 GeV/c, transverse [polarized target], nucleon, Drell–Yan process, hep-ph, dimuon: mass spectrum, Azimuth, High Energy Physics - Phenomenology, Transverse plane, asymmetry [angular distribution], pi- nucleus: scattering, mass spectrum [dimuon], distribution function [parton], Nucleon, spin: asymmetry, Particle Physics - Experiment, Particle physics, angular distribution: asymmetry, scattering [pi- nucleus], ComputingMethodologies_IMAGEPROCESSINGANDCOMPUTERVISION, FOS: Physical sciences, ComputerApplications_COMPUTERSINOTHERSYSTEMS, Accelerator Physics and Instrumentation, GeneralLiterature_MISCELLANEOUS, Nuclear physics, Physics and Astronomy (all), [ PHYS.HEXP ] Physics [physics]/High Energy Physics - Experiment [hep-ex], 0103 physical sciences, quantum chromodynamics, universality, 010306 general physics, Particle Physics - Phenomenology, 010308 nuclear & particles physics, hep-ex, High Energy Physics::Phenomenology, Acceleratorfysik och instrumentering, CERN SPS, mass spectrum: (muon+ muon-), ComputingMethodologies_PATTERNRECOGNITION, [PHYS.HPHE]Physics [physics]/High Energy Physics - Phenomenology [hep-ph], Physics::Accelerator Physics, [ PHYS.HPHE ] Physics [physics]/High Energy Physics - Phenomenology [hep-ph], High Energy Physics::Experiment, asymmetry [spin], experimental results
Abstract: The first measurement of transverse-spin-dependent azimuthal asymmetries in the pion-induced Drell-Yan (DY) process is reported. We use the CERN SPS 190 GeV/$c$, $\pi^{-}$ beam and a transversely polarized ammonia target. Three azimuthal asymmetries giving access to different transverse-momentum-dependent (TMD) parton distribution functions (PDFs) are extracted using dimuon events with invariant mass between 4.3 GeV/$c^2$ and 8.5 GeV/$c^2$. The observed sign of the Sivers asymmetry is found to be consistent with the fundamental prediction of Quantum Chromodynamics (QCD) that the Sivers TMD PDFs extracted from DY have a sign opposite to the one extracted from semi-inclusive deep-inelastic scattering (SIDIS) data. We present two other asymmetries originating from the pion Boer-Mulders TMD PDFs convoluted with either the nucleon transversity or pretzelosity TMD PDFs. These DY results are obtained at a hard scale comparable to that of a recent COMPASS SIDIS measurement and hence allow unique tests of fundamental QCD universality predictions., Comment: 11 pages, 6 figures
Published: 2017

9. Exclusive ω meson muoproduction on transversely polarised protons

Author: Adolph, C., Agarwala, J., Augustyniak, W., Kolosov, V. N., Kondo, K., Koenigsmann, K., Konorov, I., Konstantinov, V. F., Kotzinian, A. M., Kouznetsov, O. M., Kraemer, M., Kremser, P., Krinner, F., Austregesilo, A., Kroumchtein, Z. V., Kulinich, Y., Kunne, F., Kurek, K., Kurjata, R. P., Lednev, A. A., Lehmann, A., Levillain, M., Levorato, S., Lian, Y. -S., Azevedo, C. D. R., Lichtenstadt, J., Longo, R., Maggiora, A., Magnon, A., Makins, N., Makke, N., Mallot, G. K., Marchand, C., Marianski, B., Martin, A., Badelek, B., Marzec, J., Matousek, J., Matsuda, H., Matsuda, T., Meshcheryakov, G. V., Meyer, M., Meyer, W., Michigami, T., Mikhailov, Yu. V., Mikhasenko, M., Balestra, F., Mitrofanov, E., Mitrofanov, N., Miyachi, Y., Montuenga, P., Nagaytsev, A., Nerling, F., Neyret, D., Nikolaenko, V. I., Novy, J., Nowak, W. -D., Barth, J., Nukazuka, G., Nunes, A. S., Olshevsky, A. G., Orlov, I., Ostrick, M., Panzieri, D., Parsamyan, B., Paul, S., Peng, J. -C., Pereira, F., Beck, R., Pesek, M., Peshekhonov, D. V., Pierre, N., Platchkov, S., Pochodzalla, J., Polyakov, V. A., Pretz, Jörg, Quaresma, M., Quintans, C., Ramos, S., Bedfer, Y., Regali, C., Reicherz, G., Riedl, C., Roskot, M., Ryabchikov, D. I., Rybnikov, A., Rychter, A., Salac, R., Samoylenko, V. D., Sandacz, A., Bernhard, J., Santos, C., Sarkar, S., Savin, I. A., Sawada, T., Sbrizzai, G., Schiavon, P., Schmidt, K., Schmieden, H., Schoenning, K., Schopferer, S., Bicker, K., Seder, E., Selyunin, A., Shevchenko, O. Yu., Silva, L., Sinha, L., Sirtl, S., Slunecka, M., Smolik, J., Sozzi, F., Srnka, A., Aghasyan, M., Bielert, E. R., Steffen, D., Stolarski, M., Sulc, M., Suzuki, H., Szabelski, A., Szameitat, T., Sznajder, P., Takekawa, S., Tasevsky, M., Tessaro, S., Birsa, R., Tessarotto, F., Thibaud, F., Tosello, F., Tskhay, V., Uhl, S., Veloso, J., Virius, M., Vondra, J., Wallner, S., Weisrock, T., Bisplinghoff, J., Wilfert, M., ter Wolbeek, J., Zaremba, K., Zavada, P., Zavertyaev, M., Zemlyanichkina, E., Ziembicki, M., Zink, A., COMPASS Collaboration, Bodlak, M., Boer, M., Bordalo, P., Bradamante, F., Braun, C., Bressan, A., Buechele, M., Akhunzyanov, R., Chang, W. -C., Chatterjee, C., Chiosso, M., Choi, I., Chung, S. -U., Cicuttin, A., Crespo, M. L., Curiel, Q., Dalla Torre, S., Dasgupta, S. S., Alexeev, M. G., Dasgupta, S., Denisov, O. Yu., Dhara, L., Donskov, S. V., Doshita, N., Duic, V., Duennweber, W., Dziewiecki, M., Efremov, A., Eversheim, P. D., Alexeev, G. D., Eyrich, W., Faessler, M., Ferrero, A., Finger, M., Fischer, H., Franco, C., du Fresne von Hohenesche, Nicolas, Friedrich, J. M., Frolov, V., Fuchey, E., Amoroso, A., Gautheron, F., Gavrichtchouk, O. P., Gerassimov, S., Giordano, F., Gnesi, I., Gorzellik, M., Grabmueller, S., Grasso, A., Grosse-Perdekamp, M., Grube, B., Andrieux, V., Grussenmeyer, T., Guskov, A., Haas, F., Hahne, D., von Harrach, D., Hashimoto, R., Heinsius, F. H., Heitz, R., Herrmann, F., Hinterberger, F., Anfimov, N. V., Horikawa, N., d'Hosev, N., Hsieh, C. -Y., Huber, S., Ishimoto, S., Ivanov, A., Ivanshin, Yu., Iwata, T., Jahn, R., Jary, V., Anosov, V., Joosten, R., Joerg, P., Kabuss, E., Ketzer, B., Khaustov, G. V., Khokhlov, Yu. A., Kisselev, Yu., Klein, F., Klimaszewski, K., Koivuniemi, J. H., Adolph, C., Aghasyan, M., Akhunzyanov, R., Alexeev, M. G., Alexeev, G. D., Amoroso, A., Andrieux, V., Anfimov, N. V., Anosov, V., Augustyniak, W., Austregesilo, A., Azevedo, C. D. R., Badełek, B., Balestra, F., Barth, J., Beck, R., Bedfer, Y., Bernhard, J., Bicker, K., Bielert, E. R., Birsa, Renato, Bisplinghoff, J., Bodlak, M., Boer, M., Bordalo, P., Bradamante, Franco, Braun, C., Bressan, Andrea, Büchele, M., Chang, W. C., Chatterjee, Chandradoy, Chiosso, M., Choi, I., Chung, S. U., Cicuttin, A., Crespo, M. L., Curiel, Q., Dalla Torre, S., Dasgupta, SHUDDHA SHANKAR, Dasgupta, S., Denisov, O. Y. u., Dhara, L., Donskov, S. V., Doshita, N., Duic, Venicio, Dünnweber, W., Dziewiecki, M., Efremov, A., Eversheim, P. D., Eyrich, W., Faessler, M., Ferrero, A., Finger, M., Fischer, H., Franco, C., du Fresne von Hohenesche, N., Friedrich, J. M., Frolov, V., Fuchey, E., Gautheron, F., Gavrichtchouk, O. P., Gerassimov, S., Giordano, F., Gnesi, I., Gorzellik, M., Grabmüller, S., Grasso, A., Grosse Perdekamp, M., Grube, B., Grussenmeyer, T., Guskov, A., Haas, F., Hahne, D., von Harrach, D., Hashimoto, R., Heinsius, F. H., Heitz, R., Herrmann, F., Hinterberger, F., Horikawa, N., D'Hose, N., Hsieh, C. Y., Huber, S., Ishimoto, S., Ivanov, A., Ivanshin, Y. u., Iwata, T., Jahn, R., Jary, V., Joosten, R., Jörg, P., Kabuß, E., Ketzer, B., Khaustov, G. V., Khokhlov, Y. u. A., Kisselev, Y. u., Klein, F., Klimaszewski, K., Koivuniemi, J. H., Kolosov, V. N., Kondo, K., Königsmann, K., Konorov, I., Konstantinov, V. F., Kotzinian, A. M., Kouznetsov, O. M., Krämer, M., Kremser, P., Krinner, F., Kroumchtein, Z. V., Kulinich, Y., Kunne, F., Kurek, K., Kurjata, R. P., Lednev, A. A., Lehmann, A., Levillain, M., Levorato, Stefano, Lian, Y. S., Lichtenstadt, J., Longo, R., Maggiora, A., Magnon, A., Makins, N., Makke, Nour, Mallot, G. K., Marchand, C., Marianski, B., Martin, Anna, Marzec, J., Matousek, Jan, Matsuda, H., Matsuda, T., Meshcheryakov, G. V., Meyer, M., Meyer, W., Michigami, T., Mikhailov, Y. u. V., Mikhasenko, M., Mitrofanov, E., Mitrofanov, N., Miyachi, Y., Montuenga, P., Nagaytsev, A., Nerling, F., Neyret, D., Nikolaenko, V. I., Nový, J., Nowak, W. D., Nukazuka, G., Nunes, A. S., Olshevsky, A. G., Orlov, I., Ostrick, M., Panzieri, D., Parsamyan, B., Paul, S., Peng, J. C., Pereira, F., Pešek, M., Peshekhonov, D. V., Pierre, N., Platchkov, S., Pochodzalla, J., Polyakov, V. A., Pretz, J., Quaresma, M., Quintans, C., Ramos, S., Regali, C., Reicherz, G., Riedl, C., Roskot, M., Ryabchikov, D. I., Rybnikov, A., Rychter, A., Salac, R., Samoylenko, V. D., Sandacz, A., Santos, C., Sarkar, S., Savin, I. A., Sawada, T., Sbrizzai, Giulio, Schiavon, Paolo, Schmidt, K., Schmieden, H., Schönning, K., Schopferer, S., Seder, E., Selyunin, A., Shevchenko, O. Y. u., Silva, L., Sinha, L., Sirtl, S., Slunecka, M., Smolik, J., Sozzi, Federica, Srnka, A., Steffen, D., Stolarski, M., Sulc, M., Suzuki, H., Szabelski, Adam, Szameitat, T., Sznajder, P., Takekawa, Stefano, Tasevsky, M., Tessaro, Susanna, Tessarotto, F., Thibaud, F., Tosello, F., Tskhay, V., Uhl, S., Veloso, J., Virius, M., Vondra, J., Wallner, S., Weisrock, T., Wilfert, M., ter Wolbeek, J., Zaremba, K., Zavada, P., Zavertyaev, M., Zemlyanichkina, E., Ziembicki, M., and Zink, A.
Subjects: helicity [nucleon], Nuclear and High Energy Physics, generalized parton distribution, COMPASS, nuclear reaction [muon nucleus], transition [form factor], lcsh:Nuclear and particle physics. Atomic energy. Radioactivity, ddc:530, Nuclear Experiment, transversity, transverse momentum [omega(783)], angular momentum [quark], 160 GeV/c, High Energy Physics::Phenomenology, momentum transfer, photon, transverse [polarized target], scattering [muon+ p], Bjorken [scaling], asymmetry [angular distribution], lcsh:QC770-798, exclusive production [omega(783)], leptoproduction [omega(783)], High Energy Physics::Experiment, distribution function [parton], asymmetry [spin], experimental results
Abstract: Exclusive production of ω mesons was studied at the COMPASS experiment by scattering 160 GeV/c muons off transversely polarised protons. Five single-spin and three double-spin azimuthal asymmetries were measured in the range of photon virtuality 1 (GeV/c)2
Published: 2017

10. Longitudinal double-spin asymmetry $A_1^{\rm p}$ and spin-dependent structure function $g_1^{\rm p}$ of the proton at small values of $x$ and $Q^2$

Author: Aghasyan, M., Akhunzyanov, R., Alexeev, M. G., Alexeev, G. D., Amoroso, A., Andrieux, V., Anfimov, N. V., Anosov, V., Antoshkin, A., Augsten, K., Augustyniak, W., Austregesilo, A., Azevedo, C. D. R., Badelek, B., Balestra, F., Ball, M., Barth, J., Beck, R., Bedfer, Y., Bernhard, J., Bicker, K., Bielert, E. R., Birsa, R., Bodlak, M., Bordalo, P., Bradamante, F., Bressan, A., Buechele, M., Burtsev, V. E., Chang, W. -C., Chatterjee, C., Chiosso, M., Choi, I., Chumakov, A. G., Chung, S. -U., Cicuttin, A., Crespo, M. L., Torre, S. Dalla, Dasgupta, S. S., Dasgupta, S., Denisov, O. Yu., Dhara, L., Donskov, S. V., Doshita, N., Dreisbach, Ch., Duennweber, W., Dusaev, R. R., Dziewiecki, M., Efremov, A., Eversheim, P. D., Faessler, M., Ferrero, A., Finger, M., Fischer, H., Franco, C., von Hohenesche, N. du Fresne, Friedrich, J. M., Frolov, V., Fuchey, E., Gautheron, F., Gavrichtchouk, O. P., Gerassimov, S., Giarra, J., Giordano, F., Gnesi, I., Gorzellik, M., Grasso, A., Gridin, A., Perdekamp, M. Grosse, Grube, B., Grussenmeyer, T., Guskov, A., Hahne, D., Hamar, G., von Harrach, D., Heinsius, F. H., Heitz, R., Herrmann, F., Horikawa, N., d'Hose, N., Hsieh, C. -Y., Huber, S., Ishimoto, S., Ivanov, A., Ivanshin, Yu., Iwata, T., Jary, V., Joosten, R., Joerg, P., Kabuss, E., Kerbizi, A., Ketzer, B., Khaustov, G. V., Khokhlov, Yu. A., Kisselev, Yu., Klein, F., Koivuniemi, J. H., Kolosov, V. N., Kondo, K., Koenigsmann, K., Konorov, I., Konstantinov, V. F., Kotzinian, A. M., Kouznetsov, O. M., Kral, Z., Kraemer, M., Kremser, P., Krinner, F., Kroumchtein, Z. V., Kulinich, Y., Kunne, F., Kurek, K., Kurjata, R. P., Kuznetsov, I. I., Kveton, A., Lednev, A. A., Levchenko, E. A., Levillain, M., Levorato, S., Lian, Y. -S., Lichtenstadt, J., Longo, R., Lyubovitskij, V. E., Maggiora, A., Magnon, A., Makins, N., Makke, N., Mallot, G. K., Mamon, S. A., Marianski, B., Martin, A., Marzec, J., Matousek, J., Matsuda, H., Matsuda, T., Meshcheryakov, G. V., Meyer, M., Meyer, W., Mikhailov, Yu. V., Mikhasenko, M., Mitrofanov, E., Mitrofanov, N., Miyachi, Y., Moretti, A., Nagaytsev, A., Nerling, F., Neyret, D., Novy, J., Nowak, W. -D., Nukazuka, G., Nunes, A. S., Olshevsky, A. G., Orlov, I., Ostrick, M., Panzieri, D., Parsamyan, B., Paul, S., Peng, J. -C., Pereira, F., Pesek, M., Peskova, M., Peshekhonov, D. V., Pierre, N., Platchkov, S., Pochodzalla, J., Polyakov, V. A., Pretz, J., Quaresma, M., Quintans, C., Ramos, S., Regali, C., Reicherz, G., Riedl, C., Rogacheva, N. S., Ryabchikov, D. I., Rybnikov, A., Rychter, A., Salac, R., Samoylenko, V. D., Sandacz, A., Santos, C., Sarkar, S., Savin, I. A., Sawada, T., Sbrizzai, G., Schiavon, P., Schmidt, K., Schmieden, H., Schoenning, K., Seder, E., Selyunin, A., Silva, L., Sinha, L., Sirtl, S., Slunecka, M., Smolik, J., Srnka, A., Steffen, D., Stolarski, M., Subrt, O., Sulc, M., Suzuki, H., Szabelski, A., Szameitat, T., Sznajder, P., Tasevsky, M., Tessaro, S., Tessarotto, F., Thiel, A., Tomsa, J., Tosello, F., Tskhay, V., Uhl, S., Vasilishin, B. I., Vauth, A., Veloso, J., Vidon, A., Virius, M., Wallner, S., Weisrock, T., Wilfert, M., ter Wolbeek, J., Zaremba, K., Zavada, P., Zavertyaev, M., Zemlyanichkina, E., Zhuravlev, N., Ziembicki, M., Institut de Recherches sur les lois Fondamentales de l'Univers ( IRFU ), Commissariat à l'énergie atomique et aux énergies alternatives ( CEA ) -Université Paris-Saclay, Laboratoire AIM, Université Paris Diderot - Paris 7 ( UPD7 ) -Centre d'Etudes de Saclay, COMPASS, Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, Astrophysique Interprétation Modélisation (AIM (UMR_7158 / UMR_E_9005 / UM_112)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7), and Astrophysique Interprétation Modélisation (AIM (UMR7158 / UMR_E_9005 / UM_112))
Subjects: small-x, CERN Lab, [formula omitted], FOS: Physical sciences, sum rule: Bjorken, structure function: spin, spin: dependence, COMPASS, beam: energy, High Energy Physics - Experiment, x-dependence, High Energy Physics - Experiment (hep-ex), p: spin, momentum transfer: low, [ PHYS.HEXP ] Physics [physics]/High Energy Physics - Experiment [hep-ex], [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], p: structure function, Nuclear Experiment, A1, hep-ex, muon: beam, spin: effect, photon, Inelastic muon scattering, CERN SPS, Low [formula omitted], Low Q2, Low x, Spin structure function, g1, muon p: deep inelastic scattering, Physics::Accelerator Physics, High Energy Physics::Experiment, nucleon: spin, muon: polarized beam, spin: longitudinal, statistical, spin: asymmetry, Particle Physics - Experiment, experimental results
Abstract: We present a precise measurement of the proton longitudinal double-spin asymmetry $A_1^{\rm p}$ and the proton spin-dependent structure function $g_1^{\rm p}$ at photon virtualities $0.006~({\rm GeV}/c)^2, Comment: 19 pages, 7 figures
Published: 2018

11. Search for muoproduction of $X (3872)$ at COMPASS and indication of a new state $\widetilde{X}(3872)$

Author: COMPASS Collaboration, Aghasyan, M., Augsten, K., Kondo, K., Königsmann, K., Konorov, I., Konstantinov, V. F., Kotzinian, A. M., Kouznetsov, O. M., Kral, Z., Krämer, M., Kremser, P., Krinner, F., Augustyniak, W., Kroumchtein, Z. V., Kulinich, Y., Kunne, F., Kurek, K., Kurjata, R. P., Kuznetsov, I. I., Kveton, A., Lednev, A. A., Levchenko, E. A., Levillain, M., Austregesilo, A., Levorato, S., Lian, Y.-S., Lichtenstadt, J., Longo, R., Lyubovitskij, V. E., Maggiora, A., Magnon, A., Makins, N., Makke, N., Mallot, G. K., Azevedo, C. D. R., Mamon, S. A., Marianski, B., Martin, A., Marzec, J., Matoušek, J., Matsuda, H., Matsuda, T., Meshcheryakov, G. V., Meyer, M., Meyer, W., Badełek, B., Mikhailov, Yu. V., Mikhasenko, M., Mitrofanov, E., Mitrofanov, N., Miyachi, Y., Nagaytsev, A., Nerling, F., Neyret, D., Nový, J., Nowak, W.-D., Balestra, F., Nukazuka, G., Nunes, A. S., Olshevsky, A. G., Orlov, I., Ostrick, M., Panzieri, D., Parsamyan, B., Paul, S., Peng, J.-C., Pereira, F., Ball, M., Pešek, M., Pešková, M., Peshekhonov, D. V., Pierre, N., Platchkov, S., Pochodzalla, J., Polyakov, V. A., Pretz, Jörg, Quaresma, M., Quintans, C., Barth, J., Ramos, S., Regali, C., Reicherz, G., Riedl, C., Rogacheva, N. S., Ryabchikov, D. I., Rybnikov, A., Rychter, A., Salac, R., Samoylenko, V. D., Beck, R., Sandacz, A., Santos, C., Sarkar, S., Savin, I. A., Sawada, T., Sbrizzai, G., Schiavon, P., Schmidt, K., Schmieden, H., Schönning, K., Bedfer, Y., Seder, E., Selyunin, A., Silva, L., Sinha, L., Sirtl, S., Slunecka, M., Smolik, J., Srnka, A., Steffen, D., Stolarski, M., Akhunzyanov, R., Bernhard, J., Subrt, O., Sulc, M., Suzuki, H., Szabelski, A., Szameitat, T., Sznajder, P., Tasevsky, M., Tessaro, S., Tessarotto, F., Thiel, A., Bicker, K., Tomsa, J., Tosello, F., Tskhay, V., Uhl, S., Vasilishin, B. I., Vauth, A., Veloso, J., Vidon, A., Virius, M., Wallner, S., Bielert, E. R., Weisrock, T., Wilfert, M., ter Wolbeek, J., Zaremba, K., Zavada, P., Zavertyaev, M., Zemlyanichkina, E., Zhuravlev, N., Ziembicki, M., Birsa, R., Bodlak, M., Bordalo, P., Bradamante, F., Bressan, A., Büchele, M., Burtsev, V. E., Alexeev, M. G., Chang, W.-C., Chatterjee, C., Chiosso, M., Choi, I., Chumakov, A. G., Chung, S.-U., Cicuttin, A., Crespo, M. L., Dalla Torre, S., Dasgupta, S. S., Alexeev, G. D., Dasgupta, S., Denisov, O. Yu., Dhara, L., Donskov, S. V., Doshita, N., Dreisbach, Ch., Dünnweber, W., Dusaev, R. R., Dziewiecki, M., Efremov, A., Amoroso, A., Eversheim, P. D., Faessler, M., Ferrero, A., Finger, M., Fischer, H., Franco, C., du Fresne von Hohenesche, N., Friedrich, J. M., Frolov, V., Andrieux, V., Fuchey, E., Gautheron, F., Gavrichtchouk, O. P., Gerassimov, S., Giarra, J., Giordano, F., Gnesi, I., Gorzellik, M., Grasso, A., Gridin, A., Anfimov, N. V., Grosse-Perdekamp, M., Grube, B., Grussenmeyer, T., Guskov, A., Hahne, D., Hamar, G., von Harrach, D., Heinsius, F. H., Heitz, R., Herrmann, F., Anosov, V., Horikawa, N., d'Hose, N., Hsieh, C.-Y., Huber, S., Ishimoto, S., Ivanov, A., Ivanshin, Yu., Iwata, T., Jary, V., Joosten, R., Antoshkin, A., Jörg, P., Kabuß, E., Kerbizi, A., Ketzer, B., Khaustov, G. V., Khokhlov, Yu. A., Kisselev, Yu., Klein, F., Koivuniemi, J. H., Kolosov, V. N., Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, and COMPASS
Subjects: two-pion [mass spectrum], muon nucleus: exclusive reaction, FOS: Physical sciences, leptoproduction [X(3872)], COMPASS, High Energy Physics - Experiment, High Energy Physics - Experiment (hep-ex), X(3872), hadronic decay [X(3872)], mass spectrum: two-pion, Tetraquark, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], ddc:530, X(3872): hadronic decay, muon+: beam, Nuclear Experiment, muon+ nucleus: scattering, M176M, hep-ex, X(3872): leptoproduction, beam [muon+], CERN SPS, exclusive production, channel cross section: branching ratio: measured, Photoproduction, +J%2Fpsi%283100%29+2pi%22">X(3872) --> J/psi(3100) 2pi, branching ratio: measured [channel cross section], exclusive reaction [muon nucleus], High Energy Physics::Experiment, Exotic charmonia, scattering [muon+ nucleus], hadron, statistical, Particle Physics - Experiment, experimental results
Abstract: We have searched for exclusive production of exotic charmonia in the reaction $\mu^+~N \rightarrow \mu^+ (J\!/\!\psi\pi^+\pi^-)\pi^{\pm}~N'$ using COMPASS data collected with incoming muons of 160 GeV/$c$ and 200 GeV/$c$ momentum. In the $J\!/\!\psi\pi^+\pi^-$ mass distribution we observe a signal with a statistical significance of 4.1 $\sigma$. Its mass and width are consistent with those of the $X(3872)$. The shape of the $\pi^+\pi^-$ mass distribution from the observed decay into $J\!/\!\psi\pi^+\pi^-$ shows disagreement with previous observations for $X(3872)$. The observed signal may be interpreted as a possible evidence of a new charmonium state. It could be associated with a neutral partner of $X(3872)$ with $C = -1$ predicted by a tetraquark model. The product of cross section and branching fraction of the decay of the observed state into $J\!/\!\psi\pi^+\pi^-$ is determined to be 71$\pm$28(stat)$\pm$39(syst) pb., Comment: 12 pages, 6 figures
Published: 2018

12. Search for muoproduction of X(3872) at COMPASS and indication of a new state X˜(3872)

Author: Aghasyan, M., Akhunzyanov, R., Alexeev, M. G., Alexeev, G. D., Amoroso, A., Andrieux, V., Anfimov, N. V., Anosov, V., Antoshkin, A., Augsten, K., Augustyniak, W., Austregesilo, A., Azevedo, C. D. R., Badelek, B., Balestra, F., Ball, M., Barth, J., Beck, R., Bedfer, Y., Bernhard, J., Bicker, K., Bielert, E. R., Birsa, R., Bodlak, M., Bordalo, P., Bradamante, F., Bressan, A., Buchele, M., Burtsev, V. E., Chang, W. -C., Chatterjee, C., Chiosso, M., Choi, I., Chumakov, A. G., Chung, S. -U., Cicuttin, A., Crespo, M. L., Dalla Torre, S., Dasgupta, S. S., Dasgupta, S., Denisov, O. Y., Dhara, L., Donskov, S. V., Doshita, N., Dreisbach, C., Dunnweber, W., Dusaev, R. R., Dziewiecki, M., Efremov, A., Eversheim, P. D., Faessler, M., Ferrero, A., Finger, M., Fischer, H., Franco, C., du Fresne von Hohenesche, N., Friedrich, J. M., Frolov, V., Fuchey, E., Gautheron, F., Gavrichtchouk, O. P., Gerassimov, S., Giarra, J., Giordano, F., Gnesi, I., Gorzellik, M., Grasso, A., Gridin, A., Grosse Perdekamp, M., Grube, B., Grussenmeyer, T., Guskov, A., Hahne, D., Hamar, G., von Harrach, D., Heinsius, F. H., Heitz, R., Herrmann, F., Horikawa, N., D'Hose, N., Hsieh, C. -Y., Huber, S., Ishimoto, S., Ivanov, A., Ivanshin, Y., Iwata, T., Jary, V., Joosten, R., Jorg, P., Kabuss, E., Kerbizi, A., Ketzer, B., Khaustov, G. V., Khokhlov, Y. A., Kisselev, Y., Klein, F., Koivuniemi, J. H., Kolosov, V. N., Kondo, K., Konigsmann, K., Konorov, I., Konstantinov, V. F., Kotzinian, A. M., Kouznetsov, O. M., Kral, Z., Kramer, M., Kremser, P., Krinner, F., Kroumchtein, Z. V., Kulinich, Y., Kunne, F., Kurek, K., Kurjata, R. P., Kuznetsov, I. I., Kveton, A., Lednev, A. A., Levchenko, E. A., Levillain, M., Levorato, S., Lian, Y. -S., Lichtenstadt, J., Longo, R., Lyubovitskij, V. E., Maggiora, A., Magnon, A., Makins, N., Makke, N., Mallot, G. K., Mamon, S. A., Marianski, B., Martin, A., Marzec, J., Matousek, J., Matsuda, H., Matsuda, T., Meshcheryakov, G. V., Meyer, M., Meyer, W., Mikhailov, Y. V., Mikhasenko, M., Mitrofanov, E., Mitrofanov, N., Miyachi, Y., Nagaytsev, A., Nerling, F., Neyret, D., Novy, J., Nowak, W. -D., Nukazuka, G., Nunes, A. S., Olshevsky, A. G., Orlov, I., Ostrick, M., Panzieri, D., Parsamyan, B., Paul, S., Peng, J. -C., Pereira, F., Pesek, M., Peskova, M., Peshekhonov, D. V., Pierre, N., Platchkov, S., Pochodzalla, J., Polyakov, V. A., Pretz, J., Quaresma, M., Quintans, C., Ramos, S., Regali, C., Reicherz, G., Riedl, C., Rogacheva, N. S., Ryabchikov, D. I., Rybnikov, A., Rychter, A., Salac, R., Samoylenko, V. D., Sandacz, A., Santos, C., Sarkar, S., Savin, I. A., Sawada, T., Sbrizzai, G., Schiavon, P., Schmidt, K., Schmieden, H., Schonning, K., Seder, E., Selyunin, A., Silva, L., Sinha, L., Sirtl, S., Slunecka, M., Smolik, J., Srnka, A., Steffen, D., Stolarski, M., Subrt, O., Sulc, M., Suzuki, H., Szabelski, A., Szameitat, T., Sznajder, P., Tasevsky, M., Tessaro, S., Tessarotto, F., Thiel, A., Tomsa, J., Tosello, F., Tskhay, V., Uhl, S., Vasilishin, B. I., Vauth, A., Veloso, J., Vidon, A., Virius, M., Wallner, S., Weisrock, T., Wilfert, M., ter Wolbeek, J., Zaremba, K., Zavada, P., Zavertyaev, M., Zemlyanichkina, E., Zhuravlev, N., and Ziembicki, M.
Subjects: X(3872), Photoproduction, Tetraquark, COMPASS, Exotic charmonia
Published: 2018

13. Search for muoproduction of X (3872) at COMPASS and indication of a new state $\widetilde{X}$(3872)

Author: Aghasyan, M., Akhunzyanov, R., Alexeev, M.G., Alexeev, G.D., Amoroso, A., Andrieux, V., Anfimov, N.V., Anosov, V., Antoshkin, A., Augsten, K., Augustyniak, W., Austregesilo, A., Azevedo, C.D.R., Badełek, B., Balestra, F., Ball, M., Barth, J., Beck, R., Bedfer, Y., Bernhard, J., Bicker, K., Bielert, E.R., Birsa, R., Bodlak, M., Bordalo, P., Bradamante, F., Bressan, A., Büchele, M., Burtsev, V.E., Chang, W.-C., Chatterjee, C., Chiosso, M., Choi, I., Chumakov, A.G., Chung, S.-U., Cicuttin, A., Crespo, M.L., Dalla Torre, S., Dasgupta, S.S., Denisov, O.Yu., Dhara, L., Donskov, S.V., Doshita, N., Dreisbach, Ch., Dünnweber, W., Dusaev, R.R., Dziewiecki, M., Efremov, A., Eversheim, P.D., Faessler, M., Ferrero, A., Finger, Michael, Fischer, H., Franco, C., du Fresne von Hohenesche, N., Friedrich, J.M., Frolov, V., Fuchey, E., Gautheron, F., Gavrichtchouk, O.P., Gerassimov, S., Giarra, J., Giordano, F., Gnesi, I., Gorzellik, M., Grasso, A., Gridin, A., Grosse Perdekamp, M., Grube, B., Grussenmeyer, T., Guskov, A., Hahne, D., Hamar, G., Von Harrach, D., Heinsius, F.H., HEITZ, R., Herrmann, F., Horikawa, N., D'Hose, N., Hsieh, C.-Y., Huber, S., Ishimoto, S., Ivanov, A., Ivanshin, Yu., Iwata, T., Jary, V., Joosten, R., Jörg, P., Kabuß, E., Kerbizi, A., Ketzer, B., Khaustov, G.V., Khokhlov, Yu.A., Kisselev, Yu., Klein, F., Koivuniemi, J.H., Kolosov, V.N., Kondo, K., Königsmann, K., Konorov, I., Konstantinov, V.F., Kotzinian, A.M., Kouznetsov, O.M., Kral, Z., Krämer, M., Kremser, P., Krinner, F., Kroumchtein, Z.V., Kulinich, Y., Kunne, F., Kurek, K., Kurjata, R.P., Kuznetsov, I.I., Kveton, A., Lednev, A.A., Levchenko, E.A., Levillain, M., Levorato, S., Lian, Y.-S., Lichtenstadt, J., Longo, R., Lyubovitskij, V.E., Maggiora, A., Magnon, A., Makins, N., Makke, N., Mallot, G.K., Mamon, S.A., Marianski, B., Martin, A., Marzec, J., Matoušek, J., Matsuda, H., Matsuda, T., Meshcheryakov, G.V., Meyer, M., Meyer, W., Mikhailov, Yu.V., Mikhasenko, M., Mitrofanov, E., Mitrofanov, N., Miyachi, Y., Nagaytsev, A., Nerling, F., Neyret, D., Nový, J., Nowak, W.-D., Nukazuka, G., Nunes, A.S., Olshevsky, A.G., Orlov, I., Ostrick, M., Panzieri, D., Parsamyan, B., Paul, S., Peng, J.-C., Pereira, F., Pešek, M., Pešková, M., Peshekhonov, D.V., Pierre, N., Platchkov, S., Pochodzalla, J., Polyakov, V.A., Pretz, J., Quaresma, M., Quintans, C., Ramos, S., Regali, C., Reicherz, G., Riedl, C., Rogacheva, N.S., Ryabchikov, D.I., Rybnikov, A., Rychter, A., Salac, R., Samoylenko, V.D., Sandacz, A., Santos, C., Sarkar, S., Savin, I.A., Sawada, T., Sbrizzai, G., Schiavon, P., Schmidt, K., Schmieden, H., Schönning, K., Seder, E., Selyunin, A., Silva, L., Sinha, L., Sirtl, S., Slunecka, M., Smolik, J., Srnka, A., Steffen, D., Stolarski, M., Subrt, O., Sulc, M., Suzuki, H., Szabelski, A., Szameitat, T., Sznajder, P., Tasevsky, M., Tessaro, S., Tessarotto, F., Thiel, A., Tomsa, J., Tosello, F., Tskhay, V., Uhl, S., Vasilishin, B.I., Vauth, A., Veloso, J., Vidon, A., Virius, M., Wallner, S., Weisrock, T., Wilfert, M., ter Wolbeek, J., Zaremba, K., Zavada, P., Zavertyaev, M., Zemlyanichkina, E., Zhuravlev, N., Ziembicki, M., Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, and COMPASS
Subjects: X(3872), Automatic Keywords, charmonium, Tetraquark, muon, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], Exotic charmonia, branching ratio, tetraquark: model, COMPASS, statistical, pi+ pi-: mass spectrum, photoproduction
Abstract: International audience; We have searched for exclusive production of exotic charmonia in the reaction μ+N→μ+(J/ψπ+π−)π±N′ using COMPASS data collected with incoming muons of 160 GeV/ c and 200 GeV/ c momentum. In the J/ψπ+π− mass distribution we observe a signal with a statistical significance of 4.1 σ . Its mass and width are consistent with those of the X(3872) . The shape of the π+π− mass distribution from the observed decay into J/ψπ+π− shows disagreement with previous observations for X(3872) . The observed signal may be interpreted as a possible evidence of a new charmonium state. It could be associated with a neutral partner of X(3872) with C=−1 predicted by a tetraquark model. The product of cross section and branching fraction of the decay of the observed state into J/ψπ+π− is determined to be 71±28(stat)±39(syst) pb.
Published: 2018

14. Light isovector resonances in $\pi^- p \to \pi^-\pi^-\pi^+ p$ at 190 GeV/${\it c}$

Author: Aghasyan, M., Alexeev, M. G., Austregesilo, A., Kotzinian, A. M., Kouznetsov, O. M., Kral, Z., Kraemer, M., Krinner, F., Kroumchtein, Z. V., Kulinich, Y., Kunne, F., Kurek, K., Kurjata, R. P., Azevedo, C. D. R., Kuznetsov, I. I., Kveton, A., Lednev, A. A., Levchenko, E. A., Levillain, M., Levorato, S., Lian, Y.-S., Lichtenstadt, J., Longo, R., Lyubovitskij, V. E., Badełek, B., Maggiora, A., Magnon, A., Makins, N., Makke, N., Mallot, G. K., Mamon, S. A., Marianski, B., Martin, A., Marzec, J., Matoušek, J., Balestra, F., Matsuda, H., Matsuda, T., Meshcheryakov, G. V., Meyer, M., Meyer, W., Mikhailov, Yu. V., Mikhasenko, M., Mitrofanov, E., Mitrofanov, N., Miyachi, Y., Ball, M., Moretti, A., Nagaytsev, A., Nerling, F., Neyret, D., Nový, J., Nowak, W.-D., Nukazuka, G., Nunes, A. S., Olshevsky, A. G., Orlov, I., Barth, J., Ostrick, M., Panzieri, D., Parsamyan, B., Paul, S., Peng, J.-C., Pereira, F., Pešek, M., Pešková, M., Peshekhonov, D. V., Pierre, N., Beck, R., Platchkov, S., Pochodzalla, J., Polyakov, V. A., Pretz, Jörg, Quaresma, M., Quintans, C., Ramos, S., Regali, C., Reicherz, G., Riedl, C., Bedfer, Y., Rogacheva, N. S., Ryabchikov, D. I., Rybnikov, A., Rychter, A., Salac, R., Samoylenko, V. D., Sandacz, A., Santos, C., Sarkar, S., Savin, I. A., Bernhard, J., Sawada, T., Sbrizzai, G., Schiavon, P., Schlüter, T., Schmeing, S., Schmieden, H., Seder, E., Selyunin, A., Silva, L., Sinha, L., Bicker, K., Sirtl, S., Slunecka, M., Smolik, J., Srnka, A., Steffen, D., Stolarski, M., Subrt, O., Sulc, M., Suzuki, H., Szabelski, A., Alexeev, G. D., Bielert, E. R., Szameitat, T., Sznajder, P., Tasevsky, M., Tessaro, S., Tessarotto, F., Thiel, A., Tomsa, J., Tosello, F., Tskhay, V., Uhl, S., Birsa, R., Vasilishin, B. I., Vauth, A., Büchele, M., Veloso, J., Vidon, A., Virius, M., Wallner, S., Wilfert, M., Wolbeek, J. ter, Zaremba, K., Bodlak, M., Zavada, P., Zavertyaev, M., Zemlyanichkina, E., Ziembicki, M., Schönning, K., Haas, F., COMPASS Collaboration, Bordalo, P., Bradamante, F., Bressan, A., Buechele, M., Burtsev, V. E., Chang, W.-C., Chatterjee, C., Amoroso, A., Chiosso, M., Choi, I., Chumakov, A. G., Chung, S.-U., Cicuttin, A., Crespo, M. L., Dalla Torre, S., Dasgupta, S. S., Dasgupta, S., Denisov, Oleg Yu., Andrieux, V., Dhara, L., Donskov, S. V., Doshita, N., Dreisbach, Ch., Duennweber, W., Dusaev, R. R., Dziewiecki, M., Efremov, A., Eversheim, P. D., Faessler, M., Anfimov, N. V., Ferrero, A., Finger, M., Finger Jr., M., Fischer, H., Franco, C., du Fresne von Hohenesche, N., Friedrich, Jan M., Frolov, V., Fuchey, E., Gautheron, F., Anosov, V., Gavrichtchouk, O. P., Gerassimov, S., Giarra, J., Gnesi, I., Gorzellik, M., Grasso, A., Gridin, A., Grosse-Perdekamp, M., Grube, Boris, Grussenmeyer, T., Antoshkin, A., Guskov, A., Hahne, D., Hamar, G., von Harrach, D., Heitz, R., Herrmann, F., Horikawa, N., d'Hose, N., Hsieh, C.-Y., Huber, S., Augsten, K., Ishimoto, S., Ivanov, A., Ivanshin, Yu., Iwata, T., Jary, V., Joosten, R., Joerg, P., Juraskova, K., Kabuss, E., Kerbizi, A., Augustyniak, W., Ketzer, B., Khaustov, G. V., Khokhlov, Yu. A., Kisselev, Yu., Klein, F., Koivuniemi, J. H., Kolosov, V. N., Kondo, K., Konorov, I., Konstantinov, V. F., Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, COMPASS, Institut de Recherches sur les lois Fondamentales de l'Univers ( IRFU ), and Commissariat à l'énergie atomique et aux énergies alternatives ( CEA ) -Université Paris-Saclay
Subjects: M230M, M185M, resonance: isovector, M012.11, M012.12, M012M1, M161M, multiple production [pi], momentum transfer dependence, M017.6, M161W, (pi+ 2pi-) [mass spectrum], COMPASS, M017.5, M230W, High Energy Physics - Experiment, M185W, M017:Desig=5, M017:Desig=6, mass: width, M012:Desig=12, M012:Desig=11, excited state, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], a4(2040): hadronic decay, Particle Physics Experiments, M017M, meson: ground state, M239M, M164M, M075M, hadronic decay [a2(1320)], 190 GeV/c, mass spectrum: (pi+ 2pi-), parity [spin], hep-ph, M075W, Breit-Wigner, M164W, hadroproduction [meson resonance], mass dependence, inclusive reaction [pi- p], M111.5, High Energy Physics - Phenomenology, branching ratio, ground state [meson], Particle Physics - Experiment, beam [pi-], M034M, M010M, diffraction: dissociation, pi- p: inclusive reaction, M239:Desig=1, M034W, quantum number, M010W, pi(1800), width [mass], M012W1, [ PHYS.HEXP ] Physics [physics]/High Energy Physics - Experiment [hep-ex], recoil, ddc:530, hadronic decay [a4(2040)], Particle Physics - Phenomenology, M239W, M111:Desig=5, pi-: beam, M239.1, hep-ex, M017W, pi: multiple production, hadron spectroscopy, M162M, isovector [resonance], partial wave analysis, CERN SPS, a2(1320): hadronic decay, M162W, meson resonance: hadroproduction, spin: parity, [PHYS.HPHE]Physics [physics]/High Energy Physics - Phenomenology [hep-ph], pi2(1880), pi2(1670), [ PHYS.HPHE ] Physics [physics]/High Energy Physics - Phenomenology [hep-ph], dissociation [diffraction], experimental results
Abstract: We have performed the most comprehensive resonance-model fit of $\pi^-\pi^-\pi^+$ states using the results of our previously published partial-wave analysis (PWA) of a large data set of diffractive-dissociation events from the reaction $\pi^- + p \to \pi^-\pi^-\pi^+ + p_\text{recoil}$ with a 190 GeV/$c$ pion beam. The PWA results, which were obtained in 100 bins of three-pion mass, $0.5 < m_{3\pi} < 2.5$ GeV/$c^2$, and simultaneously in 11 bins of the reduced four-momentum transfer squared, $0.1 < t' < 1.0$ $($GeV$/c)^2$, are subjected to a resonance-model fit using Breit-Wigner amplitudes to simultaneously describe a subset of 14 selected waves using 11 isovector light-meson states with $J^{PC} = 0^{-+}$, $1^{++}$, $2^{++}$, $2^{-+}$, $4^{++}$, and spin-exotic $1^{-+}$ quantum numbers. The model contains the well-known resonances $\pi(1800)$, $a_1(1260)$, $a_2(1320)$, $\pi_2(1670)$, $\pi_2(1880)$, and $a_4(2040)$. In addition, it includes the disputed $\pi_1(1600)$, the excited states $a_1(1640)$, $a_2(1700)$, and $\pi_2(2005)$, as well as the resonancelike $a_1(1420)$. We measure the resonance parameters mass and width of these objects by combining the information from the PWA results obtained in the 11 $t'$ bins. We extract the relative branching fractions of the $\rho(770) \pi$ and $f_2(1270) \pi$ decays of $a_2(1320)$ and $a_4(2040)$, where the former one is measured for the first time. In a novel approach, we extract the $t'$ dependence of the intensity of the resonances and of their phases. The $t'$ dependence of the intensities of most resonances differs distinctly from the $t'$ dependence of the nonresonant components. For the first time, we determine the $t'$ dependence of the phases of the production amplitudes and confirm that the production mechanism of the Pomeron exchange is common to all resonances., Comment: 224 pages, 172 figures
Published: 2018

15. Search for muoproduction of X(3872) at COMPASS and indication of a new state (X)over-tilde(3872)

Author: Aghasyan, M., Akhunzyanov, R., Alexeev, M. G., Alexeev, G. D., Amoroso, A., Andrieux, V., Anfimov, N. V., Anosov, V., Antoshkin, A., Augsten, K., Augustyniak, W., Austregesilo, A., Azevedo, C. D. R., Badelek, B., Balestra, F., Ball, M., Barth, J., Beck, R., Bedfer, Y., Bernhard, J., Bicker, K., Bielert, E. R., Birsa, R., Bodlak, M., Bordalo, P., Bradamante, F., Bressan, A., Buechele, M., Burtsev, V. E., Chang, W. -C, Chatterjee, C., Chiosso, M., Choi, I., Chumakov, A. G., Chung, S. -U, Cicuttin, A., Crespo, M. L., Dalla Torre, S., Dasgupta, S. S., Dasgupta, S., Denisov, O. Yu., Dhara, L., Donskov, S. V., Doshita, N., Dreisbach, Ch., Duennweber, W., Dusaev, R. R., Dziewiecki, M., Efremov, A., Eversheim, P. D., Faessler, M., Ferrero, A., Finger, M., Finger, M., Jr., Fischer, H., Franco, C., von Hohenesche, N. du Fresne, Friedrich, J. M., Frolov, V., Fuchey, E., Gautheron, F., Gavrichtchouk, O. P., Gerassimov, S., Giarra, J., Giordano, F., Gnesi, I., Gorzellik, M., Grasso, A., Gridin, A., Perdekamp, M. Grosse, Grube, B., Grussenmeyer, T., Guskov, A., Hahne, D., Hamar, G., von Harrach, D., Heinsius, F. H., Heitz, R., Herrmann, F., Horikawa, N., d'Hose, N., Hsieh, C. -Y, Huber, S., Ishimoto, S., Ivanov, A., Ivanshin, Yu., Iwata, T., Jary, V., Joosten, R., Joerg, P., Kabuss, E., Kerbizi, A., Ketzer, B., Khaustov, G. V., Khokhlov, Yu. A., Kisselev, Yu., Klein, F., Koivuniemi, J. H., Kolosov, V. N., Kondo, K., Koenigsmann, K., Konorov, I., Konstantinov, V. F., Kotzinian, A. M., Kouznetsov, O. M., Kral, Z., Kraemer, M., Kremser, P., Krinner, F., Kroumchtein, Z. V., Kulinich, Y., Kunne, F., Kurek, K., Kurjata, R. P., Kuznetsov, I. I., Kveton, A., Lednev, A. A., Levchenko, E. A., Levillain, M., Levorato, S., Lian, Y. -S, Lichtenstadt, J., Longo, R., Lyubovitskij, V. E., Maggiora, A., Magnon, A., Makins, N., Makke, N., Mallot, G. K., Mamon, S. A., Marianski, B., Martin, A., Marzec, J., Matousek, J., Matsuda, H., Matsuda, T., Meshcheryakov, G. V., Meyer, M., Meyer, W., Mikhailov, Yu. V., Mikhasenko, M., Mitrofanov, E., Mitrofanov, N., Miyachi, Y., Nagaytsev, A., Nerling, F., Neyret, D., Novy, J., Nowak, W. -D, Nukazuka, G., Nunes, A. S., Olshevsky, A. G., Orlov, I., Ostrick, M., Panzieri, D., Parsamyan, B., Paul, S., Peng, J. -C, Pereira, F., Pesek, M., Peskova, M., Peshekhonov, D. V., Pierre, N., Platchkov, S., Pochodzalla, J., Polyakov, V. A., Pretz, J., Quaresma, M., Quintans, C., Ramos, S., Regali, C., Reicherz, G., Riedl, C., Rogacheva, N. S., Ryabchikov, D. I., Rybnikov, A., Rychter, A., Salac, R., Samoylenko, V. D., Sandacz, A., Santos, C., Sarkar, S., Savin, I. A., Sawada, T., Sbrizzai, G., Schiavon, P., Schmidt, K., Schmieden, H., Schönning, Karin, Seder, E., Selyunin, A., Silva, L., Sinha, L., Sirtl, S., Slunecka, M., Smolik, J., Srnka, A., Steffen, D., Stolarski, M., Subrt, O., Sulc, M., Suzuki, H., Szabelski, A., Szameitat, T., Sznajder, P., Tasevsky, M., Tessaro, S., Tessarotto, F., Thiel, A., Tomsa, J., Tosello, F., Tskhay, V., Uhl, S., Vasilishin, B. I., Vauth, A., Veloso, J., Vidon, A., Virius, M., Wallner, S., Weisrock, T., Wilfert, M., ter Wolbeek, J., Zaremba, K., Zavada, P., Zavertyaev, M., Zemlyanichkina, E., Zhuravlev, N., and Ziembicki, M.
Subjects: Subatomär fysik, X(3872), Photoproduction, Tetraquark, Subatomic Physics, High Energy Physics::Experiment, Exotic charmonia, COMPASS
Abstract: We have searched for exclusive production of exotic charmonia in the reaction mu N+ -> mu(+)(J/psi pi(+)pi(-))pi N-+/-' using COMPASS data collected with incoming muons of 160 GeV/c and 200 GeV/c momentum. In the J/psi pi(vertical bar)pi mass distribution we observe a signal with a statistical significance of 4.1 sigma. Its mass and width are consistent with those of the X(3872). The shape of the pi(+)pi(-) mass distribution from the observed decay into J/psi pi(+)pi(-) shows disagreement with previous observations for X(3872). The observed signal may be interpreted as a possible evidence of a new charmonium state. It could be associated with a neutral partner of X(3872) with C=-1 predicted by a tetraquark model. The product of cross section and branching fraction of the decay of the observed state into J/psi pi(+)pi(-) is determined to be 71 +/- 28(stat)+/- 39(syst) pb.
Published: 2018

16. Final COMPASS results on the deuteron spin-dependent structure function gd1 and the Bjorken sum rule

Author: Adolph, C., Aghasyan, M., Augustyniak, W., Kolosov, V. N., Kondo, K., Königsmann, K., Konorov, I., Konstantinov, V. F., Kotzinian, A. M., Kouznetsov, O. M., Krämer, M., Kremser, P., Krinner, F., Austregesilo, A., Kroumchtein, Z. V., Kulinich, Y., Kunne, F., Kurek, K., Kurjata, R. P., Lednev, A. A., Lehmann, A., Levillain, M., Levorato, S., Lian, Y.-S., Azevedo, C. D. R., Lichtenstadt, J., Longo, R., Maggiora, A., Magnon, A., Makins, N., Makke, N., Mallot, Gerhard K., Marianski, B., Martin, A., Marzec, J., Badelek, B., Matoušek, J., Matsuda, H., Matsuda, T., Meshcheryakov, G. V., Meyer, M., Meyer, W., Mikhailov, Yu. V., Mikhasenko, M., Mitrofanov, E., Mitrofanov, N., Balestra, F., Miyachi, Y., Nagaytsev, A., Nerling, F., Neyret, D., Nový, J., Nowak, W.-D., Nukazuka, G., Nunes, A. S., Olshevsky, A. G., Orlov, I., Ball, M., Ostrick, M., Panzieri, D., Parsamyan, B., Paul, S., Peng, J.-C., Pereira, F., Pešek, M., Peshekhonov, D. V., Pierre, N., Platchkov, S., Barth, J., Pochodzalla, J., Polyakov, V. A., Pretz, Jörg, Quaresma, M., Quintans, C., Ramos, S., Regali, C., Reicherz, G., Riedl, C., Roskot, M., Beck, R., Rossiyskaya, N. S., Ryabchikov, D. I., Rybnikov, A., Rychter, A., Salac, R., Samoylenko, V. D., Sandacz, A., Santos, C., Sarkar, S., Savin, I. A., Bedfer, Y., Sawada, T., Sbrizzai, G., Schiavon, P., Schmidt, K., Schmieden, H., Schönning, K., Seder, E., Selyunin, A., Silva, L., Sinha, L., Bernhard, J., Sirtl, S., Slunecka, M., Smolik, J., Srnka, A., Steffen, D., Stolarski, M., Subrt, O., Sulc, M., Suzuki, H., Szabelski, A., Akhunzyanov, R., Bicker, K., Szameitat, T., Sznajder, P., Takekawa, S., Tasevsky, M., Tessaro, S., Tessarotto, F., Thibaud, F., Thiel, A., Tosello, F., Tskhay, V., Bielert, E. R., Uhl, S., Vauth, A., Veloso, J., Virius, M., Vondra, J., Wallner, S., Weisrock, T., Wilfert, Malte Christian, Windmolders, R., Wolbeek, J. ter, Birsa, R., Zaremba, K., Zavada, P., Zavertyaev, M., Zemlyanichkina, E., Zhuravlev, N., Ziembicki, M., Zink, A., COMPASS Collaboration, Bodlak, M., Bordalo, P., Bradamante, F., Braun, C., Bressan, A., Büchele, M., Chang, W.-C., Alexeev, M. G., Chatterjee, C., Chiosso, M., Choi, I., Chung, S.-U., Cicuttin, A., Crespo, M. L., Curiel, Q., Dalla Torre, S., Dasgupta, S. S., Dasgupta, S., Alexeev, G. D., Denisov, Oleg Yu., Dhara, L., Donskov, S. V., Doshita, N., Dreisbach, Ch., Duic, V., Dünnweber, W., Dziewiecki, M., Efremov, A., Eversheim, P. D., Amoroso, A., Eyrich, W., Faessler, M., Ferrero, A., Finger, M., Fischer, H., Franco, C., du Fresne von Hohenesche, N., Friedrich, J. M., Frolov, V., Fuchey, E., Andrieux, V., Gautheron, F., Gavrichtchouk, O. P., Gerassimov, S., Giarra, J., Giordano, F., Gnesi, I., Gorzellik, M., Grabmüller, S., Grasso, A., Grosse-Perdekamp, M., Anfimov, N. V., Grube, B., Grussenmeyer, T., Guskov, A., Haas, F., Hahne, D., Hamar, G., von Harrach, D., Heinsius, F. H., Heitz, R., Herrmann, F., Anosov, V., Horikawa, N., d'Hose, N., Hsieh, C.-Y., Huber, S., Ishimoto, S., Ivanov, A., Ivanshin, Yu., Iwata, T., Jary, V., Joosten, R., Augsten, K., Jörg, P., Kabuß, E., Kerbizi, A., Ketzer, B., Khaustov, G. V., Khokhlov, Yu. A., Kisselev, Yu., Klein, F., Klimaszewski, K., and Koivuniemi, J. H.
Subjects: perturbation theory [quantum chromodynamics], deep inelastic scattering [muon deuteron], cross section: ratio, sum rule: Bjorken, polarized target, muon deuteron: deep inelastic scattering, structure function: spin, momentum transfer dependence, COMPASS, energy [beam], beam: energy, scaling: Bjorken, hadronic [final state], renormalization, x-dependence, p: spin, polarization: asymmetry, axial [charge], helicity [quark], strong coupling, quark: helicity, ddc:530, quantum chromodynamics: perturbation theory, charge: axial, Bjorken [sum rule], structure function [deuteron], deuteron: structure function, coupling constant, CERN SPS, spin [p], Bjorken [scaling], kinematics, final state: hadronic, asymmetry [polarization], nucleon: spin, spin [nucleon], muon: polarized beam, ratio [cross section], spin [structure function], polarized beam [muon], statistical, experimental results
Abstract: Physics letters / B 769, 34-41 (2017). doi:10.1016/j.physletb.2017.03.018, Published by North-Holland Publ., Amsterdam
Published: 2017

17. Exclusive $\omega$ meson muoproduction on transversely polarised protons

Author: Adolph, C., Agarwala, J., Aghasyan, M., Akhunzyanov, R., Alexeev, M. G., Alexeev, G. D., Amoroso, A., Andrieux, V., Anfimov, N. V., Anosov, V., Augustyniak, W., Austregesilo, A., Azevedo, C. D. R., Badelek, B., Balestra, F., Barth, J., Beck, R., Bedfer, Y., Bernhard, J., Bicker, K., Bielert, E. R., Birsa, R., Bisplinghoff, J., Bodlak, M., Boer, M., Bordalo, P., Bradamante, F., Braun, C., Bressan, A., Buechele, M., Chang, W. -C., Chatterjee, C., Chiosso, M., Choi, I., Chung, S. -U., Cicuttin, A., Crespo, M. L., Curiel, Q., Torre, S. Dalla, Dasgupta, S. S., Dasgupta, S., Denisov, O. Yu., Dhara, L., Donskov, S. V., Doshita, N., Duic, V., Duennweber, W., Dziewiecki, M., Efremov, A., Eversheim, P. D., Eyrich, W., Faessler, M., Ferrero, A., Finger, M., Finger jr., M., Fischer, H., Franco, C., von Hohenesche, N. du Fresne, Friedrich, J. M., Frolov, V., Fuchey, E., Gautheron, F., Gavrichtchouk, O. P., Gerassimov, S., Giordano, F., Gnesi, I., Gorzellik, M., Grabmueller, S., Grasso, A., Perdekamp, M. Grosse, Grube, B., Grussenmeyer, T., Guskov, A., Haas, F., Hahne, D., von Harrach, D., Hashimoto, R., Heinsius, F. H., Heitz, R., Herrmann, F., Hinterberger, F., Horikawa, N., dHose, N., Hsieh, C. -Y., Huber, S., Ishimoto, S., Ivanov, A., Ivanshin, Yu., Iwata, T., Jahn, R., Jary, V., Joosten, R., Joerg, P., Kabuss, E., Ketzer, B., Khaustov, G. V., Khokhlov, Yu. A., Kisselev, Yu., Klein, F., Klimaszewski, K., Koivuniemi, J. H., Kolosov, V. N., Kondo, K., Koenigsmann, K., Konorov, I., Konstantinov, V. F., Kotzinian, A. M., Kouznetsov, O. M., Kraemer, M., Kremser, P., Krinner, F., Kroumchtein, Z. V., Kulinich, Y., Kunne, F., Kurek, K., Kurjata, R. P., Lednev, A. A., Lehmann, A., Levillain, M., Levorato, S., Lian, Y. -S., Lichtenstadt, J., Longo, R., Maggiora, A., Magnon, A., Makins, N., Makke, N., Mallot, G. K., Marchand, C., Marianski, B., Martin, A., Marzec, J., Matousek, J., Matsuda, H., Matsuda, T., Meshcheryakov, G. V., Meyer, M., Meyer, W., Michigami, T., Mikhailov, Yu. V., Mikhasenko, M., Mitrofanov, E., Mitrofanov, N., Miyachi, Y., Montuenga, P., Nagaytsev, A., Nerling, F., Neyret, D., Nikolaenko, V. I., Novy, J., Nowak, W. -D., Nukazuka, G., Nunes, A. S., Olshevsky, A. G., Orlov, I., Ostrick, M., Panzieri, D., Parsamyan, B., Paul, S., Peng, J. -C., Pereira, F., Pesek, M., Peshekhonov, D. V., Pierre, N., Platchkov, S., Pochodzalla, J., Polyakov, V. A., Pretz, J., Quaresma, M., Quintans, C., Ramos, S., Regali, C., Reicherz, G., Riedl, C., Roskot, M., Ryabchikov, D. I., Rybnikov, A., Rychter, A., Salac, R., Samoylenko, V. D., Sandacz, A., Santos, C., Sarkar, S., Savin, I. A., Sawada, T., Sbrizzai, G., Schiavon, P., Schmidt, K., Schmieden, H., Schoenning, K., Schopferer, S., Seder, E., Selyunin, A., Shevchenko, O. Yu., Silva, L., Sinha, L., Sirtl, S., Slunecka, M., Smolik, J., Sozzi, F., Srnka, A., Steffen, D., Stolarski, M., Sulc, M., Suzuki, H., Szabelski, A., Szameitat, T., Sznajder, P., Takekawa, S., Tasevsky, M., Tessaro, S., Tessarotto, F., Thibaud, F., Tosello, F., Tskhay, V., Uhl, S., Veloso, J., Virius, M., Vondra, J., Wallner, S., Weisrock, T., Wilfert, M., ter Wolbeek, J., Zaremba, K., Zavada, P., Zavertyaev, M., Zemlyanichkina, E., Ziembicki, M., Zink, A., Département de Physique Nucléaire (ex SPhN) (DPHN), Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, Observatoire de la Côte d'Azur (OCA), Centre National de la Recherche Scientifique (CNRS), COMPASS, Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), Département de Physique Nucléaire (ex SPhN) ( DPHN ), Institut de Recherches sur les lois Fondamentales de l'Univers ( IRFU ), Commissariat à l'énergie atomique et aux énergies alternatives ( CEA ) -Université Paris-Saclay-Commissariat à l'énergie atomique et aux énergies alternatives ( CEA ) -Université Paris-Saclay, Commissariat à l'énergie atomique et aux énergies alternatives ( CEA ) -Université Paris-Saclay, Observatoire de la Côte d'Azur ( OCA ), and Centre National de la Recherche Scientifique ( CNRS )
Subjects: Statistics::Theory, generalized parton distribution, angular distribution: asymmetry, muon nucleus: nuclear reaction, parton: distribution function, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], nucl-ex, muon+ p: scattering, COMPASS, High Energy Physics - Experiment, scaling: Bjorken, [ PHYS.HEXP ] Physics [physics]/High Energy Physics - Experiment [hep-ex], [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], Nuclear Physics - Experiment, [ PHYS.NEXP ] Physics [physics]/Nuclear Experiment [nucl-ex], Nuclear Experiment, omega(783): leptoproduction, transversity, form factor: transition, hep-ex, 160 GeV/c, quark: angular momentum, polarized target: transverse, photon, momentum transfer, omega(783): exclusive production, nucleon: helicity, High Energy Physics::Experiment, spin: asymmetry, Particle Physics - Experiment, omega(783): transverse momentum, experimental results
Abstract: Exclusive production of $\omega$ mesons was studied at the COMPASS experiment by scattering $160~\mathrm{GeV}/\mathit{c}$ muons off transversely polarised protons. Five single-spin and three double-spin azimuthal asymmetries were measured in the range of photon virtuality $1~(\mathrm{GeV}/\mathit{c})^2 < Q^2 < 10~(\mathrm{GeV}/\mathit{c})^2$, Bjorken scaling variable $0.003 < x_{\mathit{Bj}} < 0.3$ and transverse momentum squared of the $\omega$ meson $0.05~(\mathrm{GeV}/\mathit{c})^2 < p_{T}^{2} < 0.5~(\mathrm{GeV}/\mathit{c})^2$. The measured asymmetries are sensitive to the nucleon helicity-flip Generalised Parton Distributions (GPD) $E$ that are related to the orbital angular momentum of quarks, the chiral-odd GPDs $H_{T}$ that are related to the transversity Parton Distribution Functions, and the sign of the $\pi\omega$ transition form factor. The results are compared to recent calculations of a GPD-based model., Comment: 23 pages, 9 figures
Published: 2017

18. Search for exclusive photoproduction of Zc±(3900) at COMPASS

Author: Adolph, C., Akhunzyanov, R., Alexeev, M.G., Alexeev, G.D., Amoroso, A., Andrieux, V., Anosov, V., Austregesilo, A., Badełek, B., Balestra, F., Barth, J., Baum, G., Beck, R., Bedfer, Y., Berlin, A., Bernhard, J., Bicker, K., Bielert, E.R., Bieling, J., Birsa, R., Bisplinghoff, J., Bodlak, M., Boer, M., Bordalo, P., Bradamante, F., Braun, C., Bressan, A., Büchele, M., Burtin, E., Capozza, L., Chiosso, M., Chung, S.U., Cicuttin, A., Crespo, M.L., Curiel, Q., Dalla Torre, S., Dasgupta, S.S., Dasgupta, S., Denisov, O.Yu., Donskov, S.V., Doshita, N., Duic, V., Dünnweber, W., Dziewiecki, M., Efremov, A., Elia, C., Eversheim, P.D., Eyrich, W., Faessler, M., Ferrero, A., Filin, A., Finger, M., Fischer, H., Franco, C., du Fresne von Hohenesche, N., Friedrich, J.M., Frolov, V., Gautheron, F., Gavrichtchouk, O.P., Gerassimov, S., Geyer, R., Gnesi, I., Gobbo, B., Goertz, S., Gorzellik, M., Grabmüller, S., Grasso, A., Grube, B., Grussenmeyer, T., Guskov, A., Haas, F., von Harrach, D., Hahne, D., Hashimoto, R., Heinsius, F.H., Herrmann, F., Hinterberger, F., Höppner, Ch., Horikawa, N., d'Hose, N., Huber, S., Ishimoto, S., Ivanov, A., Ivanshin, Yu., Iwata, T., Jahn, R., Jary, V., Jasinski, P., Jörg, P., Joosten, R., Kabuß, E., Ketzer, B., Khaustov, G.V., Khokhlov, Yu.A., Kisselev, Yu., Klein, F., Klimaszewski, K., Koivuniemi, J.H., Kolosov, V.N., Kondo, K., Königsmann, K., Konorov, I., Konstantinov, V.F., Kotzinian, A.M., Kouznetsov, O., Krämer, M., Kroumchtein, Z.V., Kuchinski, N., Kunne, F., Kurek, K., Kurjata, R.P., Lednev, A.A., Lehmann, A., Levillain, M., Levorato, S., Lichtenstadt, J., Maggiora, A., Magnon, A., Makke, N., Mallot, G.K., Marchand, C., Martin, A., Marzec, J., Matousek, J., Matsuda, H., Matsuda, T., Meshcheryakov, G., Meyer, W., Michigami, T., Mikhailov, Yu.V., Miyachi, Y., Nagaytsev, A., Nagel, T., Nerling, F., Neubert, S., Neyret, D., Nikolaenko, V.I., Novy, J., Nowak, W.D., Nunes, A.S., Olshevsky, A.G., Orlov, I., Ostrick, M., Panknin, R., Panzieri, D., Parsamyan, B., Paul, S., Peshekhonov, D.V., Platchkov, S., Pochodzalla, J., Polyakov, V.A., Pretz, J., Quaresma, M., Quintans, C., Ramos, S., Regali, C., Reicherz, G., Rocco, E., Rossiyskaya, N.S., Ryabchikov, D.I., Rychter, A., Samoylenko, V.D., Sandacz, A., Sarkar, S., Savin, I.A., Sbrizzai, G., Schiavon, P., Schill, C., Schlüter, T., Schmidt, K., Schmieden, H., Schönning, K., Schopferer, S., Schott, M., Shevchenko, O.Yu., Silva, L., Sinha, L., Sirtl, S., Slunecka, M., Sosio, S., Sozzi, F., Srnka, A., Steiger, L., Stolarski, M., Sulc, M., Sulej, R., Suzuki, H., Szabelski, A., Szameitat, T., Sznajder, P., Takekawa, S., ter Wolbeek, J., Tessaro, S., Tessarotto, F., Thibaud, F., Uhl, S., Uman, I., Virius, M., Wang, L., Weisrock, T., Wilfert, M., Windmolders, R., Wollny, H., Zaremba, K., Zavertyaev, M., Zemlyanichkina, E., Ziembicki, M., Zink, A., Adolph, C., Akhunzyanov, R., Alexeev, M. G., Alexeev, G. D., Amoroso, A., Andrieux, V., Anosov, V., Austregesilo, A., Badełek, B., Balestra, F., Barth, J., Baum, G, Beck, R., Bedfer, Y., Berlin, A., Bernhard, J., Bicker, K., Bielert, E. R., Bieling, J., Birsa, R., Bisplinghoff, J., Bodlak, M., Boer, M., Bordalo, P., Bradamante, Franco, Braun, C., Bressan, Andrea, Büchele, M., Burtin, E., Capozza, L., Chiosso, M., Chung, S. U., Cicuttin, A., Crespo, M. L., Curiel, Q., DALLA TORRE, Silvia, Dasgupta, SHUDDHA SHANKAR, Dasgupta, S., Denisov, O. Y. u., Donskov, S. V., Doshita, N., Duic, Venicio, Dünnweber, W., Dziewiecki, M., Efremov, A., Elia, Carmine, Eversheim, P. D., Eyrich, W., Faessler, M., Ferrero, A., Filin, A., Finger, M., Fischer, H., Franco, C., du Fresne von Hohenesche, N., Friedrich, J. M., Frolov, V., Gautheron, F., Gavrichtchouk, O. P., Gerassimov, S., Geyer, R., Gnesi, I., Gobbo, B., Goertz, S., Gorzellik, M., Grabmüller, S., Grasso, A., Grube, B., Grussenmeyer, T., Guskov, A., Haas, F., von Harrach, D., Hahne, D., Hashimoto, R., Heinsius, F. H., Herrmann, F., Hinterberger, F., Höppner, C. h., Horikawa, N., D'Hose, N., Huber, S., Ishimoto, S., Ivanov, A., Ivanshin, Y. u., Iwata, T., Jahn, R., Jary, V., Jasinski, P., Jörg, P., Joosten, R., Kabuß, E., Ketzer, B., Khaustov, G. V., Khokhlov, Y. u. A., Kisselev, Y. u., Klein, F., Klimaszewski, K., Koivuniemi, J. H., Kolosov, V. N., Kondo, K., Königsmann, K., Konorov, I., Konstantinov, V. F., Kotzinian, A. M., Kouznetsov, O., Krämer, M., Kroumchtein, Z. V., Kuchinski, N., Kunne, F., Kurek, K., Kurjata, R. P., Lednev, A. A., Lehmann, A., Levillain, M., Levorato, Stefano, Lichtenstadt, J., Maggiora, A., Magnon, A., Makke, Nour, Mallot, G. K., Marchand, C., Martin, Anna, Marzec, J., Matousek, Jan, Matsuda, H., Matsuda, T., Meshcheryakov, G., Meyer, W., Michigami, T., Mikhailov, Y. u. V., Miyachi, Y., Nagaytsev, A., Nagel, T., Nerling, F., Neubert, S., Neyret, D., Nikolaenko, V. I., Novy, J., Nowak, W. D., Nunes, A. S., Olshevsky, A. G., Orlov, I., Ostrick, M., Panknin, R., Panzieri, D., Parsamyan, B., Paul, S., Peshekhonov, D. V., Platchkov, S., Pochodzalla, J., Polyakov, V. A., Pretz, J., Quaresma, M., Quintans, C., Ramos, S., Regali, C., Reicherz, G., Rocco, E., Rossiyskaya, N. S., Ryabchikov, D. I., Rychter, A., Samoylenko, V. D., Sandacz, A., Sarkar, S., Savin, I. A., Sbrizzai, Giulio, Schiavon, Paolo, Schill, C., Schlüter, T., Schmidt, K., Schmieden, H., Schönning, K., Schopferer, S., Schott, M., Shevchenko, O. Y. u., Silva, L., Sinha, L., Sirtl, S., Slunecka, M., Sosio, S., Sozzi, Federica, Srnka, A., Steiger, L., Stolarski, M., Sulc, M., Sulej, R., Suzuki, H., Szabelski, A., Szameitat, T., Sznajder, P., Takekawa, Stefano, ter Wolbeek, J., Tessaro, S., Tessarotto, F., Thibaud, F., Uhl, S., Uman, I., Virius, M., Wang, L., Weisrock, T., Wilfert, M., Windmolders, R., Wollny, H., Zaremba, K., Zavertyaev, M., Zemlyanichkina, E., Ziembicki, M., and Zink, A.
Subjects: Nuclear and High Energy Physics, Zc(3900), Photoproduction, Tetraquark, COMPASS, lcsh:Physics, lcsh:QC1-999
Abstract: A search for the exclusive production of the Zc±(3900) hadron by virtual photons has been performed in the channel Zc±(3900)→J/ψπ±. The data cover the range from 7 GeV to 19 GeV in the centre-of-mass energy of the photon–nucleon system. The full set of the COMPASS data set collected with a muon beam between 2002 and 2011 has been used. An upper limit for the ratio BR(Zc±(3900)→J/ψπ±)×σγN→Zc±(3900)N/σγN→J/ψN of 3.7×10−3 has been established at the confidence level of 90%. Keywords: COMPASS, Zc(3900), Photoproduction, Tetraquark
Published: 2015

19. Final COMPASS results on the deuteron spin-dependent structure function $g_1^{\rm d}$ and the Bjorken sum rule

Author: Adolph, C., Aghasyan, M., Akhunzyanov, R., Alexeev, M.G., Alexeev, G.D., Amoroso, A., Andrieux, V., Anfimov, N.V., Anosov, V., Augsten, K., Augustyniak, W., Austregesilo, A., Azevedo, C.D.R., Badełek, B., Balestra, F., Ball, M., Barth, J., Beck, R., Bedfer, Y., Bernhard, J., Bicker, K., Bielert, E. R., Birsa, R., Bodlak, M., Bordalo, P., Bradamante, F., Braun, C., Bressan, A., Büchele, M., Chang, W.-C., Chatterjee, C., Chiosso, M., Choi, I., Chung, S.-U., Cicuttin, A., Crespo, M.L., Curiel, Q., Dalla Torre, S., Dasgupta, S.S., Dasgupta, S., Denisov, O.Yu., Dhara, L., Donskov, S.V., Doshita, N., Dreisbach, Ch., Duic, V., Dünnweber, W., Dziewiecki, M., Efremov, A., Eversheim, P.D., Eyrich, W., Faessler, M., Ferrero, A., Finger, M., Finger Jr., M., Fischer, H., Franco, C., du Fresne von Hohenesche, N., Friedrich, J.M., Frolov, V., Fuchey, E., Gautheron, F., Gavrichtchouk, O.P., Gerassimov, S., Giarra, J., Giordano, F., Gnesi, I., Gorzellik, M., Grabmüller, S., Grasso, A., Grosse Perdekamp, M., Grube, B., Grussenmeyer, T., Guskov, A., Haas, F., Hahne, D., Hamar, G., von Harrach, D., Heinsius, F.H., Heitz, R., Herrmann, F., Horikawa, N., d'Hose, N., Hsieh, C.-Y., Huber, S., Ishimoto, S., Ivanov, A., Ivanshin, Yu., Iwata, T., Jary, V., Joosten, R., Jörg, P., Kabuß, E., Kerbizi, A., Ketzer, B., Khaustov, G.V., Khokhlov, Yu.A., Kisselev, Yu., Klein, F., Klimaszewski, K., Koivuniemi, J.H., Kolosov, V.N., Kondo, K., Königsmann, K., Konorov, I., Konstantinov, V.F., Kotzinian, A.M., Kouznetsov, O.M., Krämer, M., Kremser, P., Krinner, F., Kroumchtein, Z.V., Kulinich, Y., Kunne, F., Kurek, K., Kurjata, R.P., Lednev, A.A., Lehmann, A., Levillain, M., Levorato, S., Lian, Y.-S., Lichtenstadt, J., Longo, R., Maggiora, A., Magnon, A., Makins, N., Makke, N., Mallot, G.K., Marianski, B., Martin, A., Marzec, J., Matoušek, J., Matsuda, H., Matsuda, T., Meshcheryakov, G.V., Meyer, M., Meyer, W., Mikhailov, Yu.V., Mikhasenko, M., Mitrofanov, E., Mitrofanov, N., Miyachi, Y., Nagaytsev, A., Nerling, F., Neyret, D., Nový, J., Nowak, W.-D., Nukazuka, G., Nunes, A.S., Olshevsky, A.G., Orlov, I., Ostrick, M., Panzieri, D., Parsamyan, B., Paul, S., Peng, J.-C., Pereira, F., Pešek, M., Peshekhonov, D.V., Pierre, N., Platchkov, S., Pochodzalla, J., Polyakov, V.A., Pretz, J., Quaresma, M., Quintans, C., Ramos, S., Regali, C., Reicherz, G., Riedl, C., Roskot, M., Rossiyskaya, N.S., Ryabchikov, D.I., Rybnikov, A., Rychter, A., Salac, R., Samoylenko, V.D., Sandacz, A., Santos, C., Sarkar, S., Savin, I.A., Sawada, T., Sbrizzai, G., Schiavon, P., Schmidt, K., Schmieden, H., Schönning, K., Seder, E., Selyunin, A., Silva, L., Sinha, L., Sirtl, S., Slunecka, M., Smolik, J., Srnka, A., Steffen, D., Stolarski, M., Subrt, O., Sulc, M., Suzuki, H., Szabelski, A., Szameitat, T., Sznajder, P., Takekawa, S., Tasevsky, M., Tessaro, S., Tessarotto, F., Thibaud, F., Thiel, A., Tosello, F., Tskhay, V., Uhl, S., Vauth, A., Veloso, J., Virius, M., Vondra, J., Wallner, S., Weisrock, T., Wilfert, M., Windmolders, R., Wolbeek, J. ter, Zaremba, K., Zavada, P., Zavertyaev, M., Zemlyanichkina, E., Zhuravlev, N., Ziembicki, M., Zink, A., Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, COMPASS, Institut de Recherches sur les lois Fondamentales de l'Univers ( IRFU ), and Commissariat à l'énergie atomique et aux énergies alternatives ( CEA ) -Université Paris-Saclay
Subjects: cross section: ratio, sum rule: Bjorken, polarized target, FOS: Physical sciences, muon deuteron: deep inelastic scattering, structure function: spin, momentum transfer dependence, COMPASS, beam: energy, High Energy Physics - Experiment, x-dependence, renormalization, scaling: Bjorken, p: spin, High Energy Physics - Experiment (hep-ex), polarization: asymmetry, Spin, [ PHYS.HEXP ] Physics [physics]/High Energy Physics - Experiment [hep-ex], strong coupling, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], quark: helicity, quantum chromodynamics: perturbation theory, Nuclear Experiment, charge: axial, Parton helicity distributions, hep-ex, High Energy Physics::Phenomenology, coupling constant, deuteron: structure function, CERN SPS, Structure function, kinematics, final state: hadronic, nucleon: spin, High Energy Physics::Experiment, muon: polarized beam, statistical, Particle Physics - Experiment, Deep inelastic scattering, experimental results
Abstract: Final results are presented from the inclusive measurement of deep-inelastic polarised-muon scattering on longitudinally polarised deuterons using a $^6$LiD target. The data were taken at $160~{\rm GeV}$ beam energy and the results are shown for the kinematic range $1~({\rm GeV}/c)^2 < Q^2 < 100~({\rm GeV}/c)^2$ in photon virtuality, $0.004 4~{\rm GeV}/c^2$ in the mass of the hadronic final state. The deuteron double-spin asymmetry $A_1^{\rm d}$ and the deuteron longitudinal-spin structure function $g_1^{\rm d}$ are presented in bins of $x$ and $Q^2$. Towards lowest accessible values of $x$, $g_1^{\rm d}$ decreases and becomes consistent with zero within uncertainties. The presented final $g_1^{\rm d}$ values together with the recently published final $g_1^{\rm p}$ values of COMPASS are used to again evaluate the Bjorken sum rule and perform the QCD fit to the $g_1$ world data at next-to-leading order of the strong coupling constant. In both cases, changes in central values of the resulting numbers are well within statistical uncertainties. The flavour-singlet axial charge $a_0$, {which is identified in the $\overline{\rm MS}$ renormalisation scheme with the total contribution of quark helicities to the nucleon spin}, is extracted from only the COMPASS deuteron data with negligible extrapolation uncertainty: $a_0 (Q^2 = 3~({\rm GeV}/c)^2) = 0.32 \pm 0.02_{\rm stat} \pm0.04_{\rm syst} \pm 0.05_{\rm evol}$. Together with the recent results on the proton spin structure function $g_1^{\rm p}$, the results on $g_1^{\rm d}$ constitute the COMPASS legacy on the measurements of $g_1$ through inclusive spin-dependent deep inelastic scattering., Comment: 16 pages, 6 figures
Published: 2016
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20. Search for exclusive photoproduction of Z(c)(+/-) (3900) at COMPASS

Author: Adolph, C., Akhunzyanov, R., Alexeev, M. G., Alexeev, G. D., Amoroso, A., Andrieux, V., Anosov, V., Austregesilo, A., Badelek, B., Balestra, F., Barth, J., Baum, G., Beck, R., Bedfer, Y., Berlin, A., Bernhard, J., Bicker, K., Bielert, E. R., Bieling, J., Birsa, R., Bisplinghoff, J., Bodlak, M., Boer, M., Bordalo, P., Bradamante, F., Braun, C., Bressan, A., Buechele, M., Burtin, E., Capozza, L., Chiosso, M., Chung, S. U., Cicuttin, A., Crespo, M. L., Curiel, Q., Dalla Torre, S., Dasgupta, S. S., Dasgupta, S., Denisov, O. Yu, Donskov, S. V., Doshita, N., Duic, V., Duennweber, W., Dziewiecki, M., Efremov, A., Elia, C., Eversheim, P. D., Eyrich, W., Faessler, M., Ferrero, A., Filin, A., Finger, M., Fischer, H., Franco, C., Hohenesche, N. Du Fresne, Friedrich, J. M., Frolov, V., Gautheron, F., Gavrichtchouk, O. P., Gerassimov, S., Geyer, R., Gnesi, I., Gobbo, B., Goertz, S., Gorzellik, M., Grabmueller, S., Grasso, A., Grube, B., Grussenmeyer, T., Guskov, A., Haas, F., Harrach, D., Hahne, D., Hashimoto, R., Heinsius, F. H., Herrmann, F., Hinterberger, F., Hoeppner, Ch, Horikawa, N., D Hose, N., Huber, S., Ishimoto, S., Ivanov, A., Ivanshin, Yu, Iwata, T., Jahn, R., Jary, V., Jasinski, P., Joerg, P., Joosten, R., Kabuss, E., Ketzer, B., Khaustov, G. V., Khokhlov, Yu A., Kisselev, Yu, Klein, F., Klimaszewski, K., Koivuniemi, J. H., Kolosov, V. N., Kondo, K., Koenigsmann, K., Konorov, I., Konstantinov, V. F., Kotzinian, A. M., Kouznetsov, O., Kraemer, M., Kroumchtein, Z. V., Kuchinski, N., Kunne, F., Kurek, K., Kurjata, R. P., Lednev, A. A., Lehmann, A., Levillain, M., Levorato, S., Lichtenstadt, J., Maggiora, A., Magnon, A., Makke, N., Mallot, G. K., Marchand, C., Martin, A., Marzec, J., Matousek, J., Matsuda, H., Matsuda, T., Meshcheryakov, G., Meyer, W., Michigami, T., Mikhailov, Yu V., Miyachi, Y., Nagaytsev, A., Nagel, T., Nerling, F., Neubert, S., Neyret, D., Nikolaenko, V. I., Novy, J., Nowak, W. -D, Nunes, A. S., Olshevsky, A. G., Orlov, I., Ostrick, M., Panknin, R., Panzieri, D., Parsamyan, B., Paul, S., Peshekhonov, D. V., Platchkov, S., Pochodzalla, J., Polyakov, V. A., Pretz, J., Quaresma, M., Quintans, C., Ramos, S., Regali, C., Reicherz, G., Rocco, E., Rossiyskaya, N. S., Ryabchikov, D. I., Rychter, A., Samoylenko, V. D., Sandacz, A., Sarkar, S., Savin, I. A., Sbrizzai, G., Schiavon, P., Schill, C., Schlueter, T., Schmidt, K., Schmieden, H., Schoenning, K., Schopferer, S., Schott, M., Shevchenko, O. Yu, Silva, L., Sinha, L., Sirtl, S., Slunecka, M., Sosio, S., Sozzi, F., Aleš Srnka, Steiger, L., Stolarski, M., Sulc, M., Sulej, R., Suzuki, H., Szabelski, A., Szameitat, T., Sznajder, P., Takekawa, S., Ter Wolbeek, J., Tessaro, S., Tessarotto, F., Thibaud, F., Uhl, S., Uman, I., Virius, M., Wang, L., Weisrock, T., Wilfert, M., Windmolders, R., Wollny, H., Zaremba, K., Zavertyaev, M., Zemlyanichkina, E., Ziembicki, M., Zink, A., Physikalisches Institut [Erlangen], Friedrich-Alexander Universität Erlangen-Nürnberg (FAU), Département de Physique Nucléaire (ex SPhN) (DPHN), Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, and COMPASS
Subjects: Nuclear and High Energy Physics, Zc(3900), Physics, QC1-999, Z(c)(3900), High Energy Physics::Phenomenology, FOS: Physical sciences, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], COMPASS, High Energy Physics - Experiment, ddc, Physik, High Energy Physics - Experiment (hep-ex), Photoproduction, Tetraquark, High Energy Physics::Experiment, ddc:530, Z c ( 3900 ), Particle Physics - Experiment
Abstract: A search for the exclusive production of the $Z_c^{\pm}(3900)$ hadron by virtual photons has been performed in the channel $Z_c^{\pm}(3900)\rightarrow J/\psi \pi^{\pm}$. The data cover the range from 7 GeV to 19 GeV in the centre-of-mass energy of the photon-nucleon system. The full set of the COMPASS data set collected with a muon beam between 2002 and 2011 has been used. An upper limit for the ratio $BR(Z_c^{\pm}(3900)\rightarrow J/\psi \pi^{\pm} )\times \sigma_{ \gamma~N \rightarrow Z_c^{\pm}(3900)~ N} /\sigma_{\gamma~N \rightarrow J/\psi~ N}$ of $3.7\times10^{-3}$ has been established at the confidence level of 90%., Comment: 8 pages, 3 figures, 1 table
Published: 2015

21. The spin-dependent structure function of the proton g(1)(p) and a test of the Bjorken sum rule

Author: Alekseev, M. G., Alexakhin, V. Y., Alexandrov, Y., Alexeev, G. D., Amoroso, Antonio, Austregesilo, A., Badelek, B., Balestra, Ferruccio, Ball, J., Barth, J., Baum, G., Bedfer, Y., Bernhard, J., Bertini, R., Bettinelli, M., Birsa, R., Bisplinghoff, J., Bordalo, P., Bradamante, F., Bravar, A., Bressan, A., Brona, G., Burtin, E., Bussa, Maria Pia, Chaberny, D., Cotic, D., Chiosso, Michela, Chung, S. U., Cicuttin, A., Colantoni, M., Crespo, M. L., Torre, S. D., Das, S., Dasgupta, S. S., Denisov, O. Y., Dhara, L., Diaz, V., Donskov, S. V., Doshita, N., Duic, V., Dunnweber, W., Efremov, A., Alaoui, A. E., Eversheim, P. D., Eyrich, W., Faessler, M., Ferrero, A., Filin, A., Finger, M., Fischer, H., Franco, C., Friedrich, J. M., Garfagnini, R., Gautheron, F., Gavrichtchouk, O. P., Gazda, R., Gerassimov, S., Geyer, R., Giorgi, M., Gnesi, I., Gobbo, B., Goertz, S., Grabmuller, S., Grasso, Antonino, Grube, B., Gushterski, R., Guskov, A., Haas, F., Harrach, D. v., Hasegawa, T., Heinsius, F. H., Hermann, R., Herrmann, F., Hess, C., Hinterberger, F., Horikawa, N., Hoppner, C., D'Hose, N., Ilgner, C., Ishimoto, S., Ivanov, O., Ivanshin, Y., Iwata, T., Jahn, R., Jasinski, P., Jegou, G., Joosten, R., Kabuss, E., Kafer, W., Kang, D., Ketzer, B., Khaustov, G. V., Khokhlov, Y. A., Kisselev, Y., Klein, F., Klimaszewski, K., Koblitz, S., Koivuniemi, J. H., Kolosovu, V. N., Kondo, K., Konigsmann, K., Konopka, R., Konorov, I., Konstantinov, V. F., Korzenev, A., Kotzinian, A. M., Kouznetsov, O., Kowalik, K., Kramer, M., Kral, A., Kroumchtein, Z. V., Kuhn, R., Kunne, F., Kurek, K., Lauser, L., Le Goff, J. M., Lednev, A. A., Lehmann, A., Levorato, S., Lichtenstadt, J., Liska, T., Maggiora, A., Maggiora, Marco, Magnon, A., Mallot, G. K., Mann, A., Marchand, C., Marroncle, J., Martin, A., Marzec, J., Massmann, F., Matsuda, T., Meyer, W., Michigami, T., Mikhailov, Y. V., Moinester, M. A., Mutter, A., Nagaytsev, A., Nagel, T., Nassalski, J., Negrini, T., Nerling, F., Neubert, S., Neyret, D., Nikolaenko, V. I., Nunes, A. S., Olshevsky, A. G., Ostrick, M., Padee, A., Panknin, R., Panzieri, D., Parsamyan, B., Paul, S., Pawlukiewicz Kaminska, B., Perevalova, E., Pesaro, G., Peshekhonov, D. V., Piragino, G., Platchkov, S., Pochodzalla, J., Polak, J., Polyakov, V. A., Pontecorvo, G., Pretz, J., Quintans, C., Rajotte, J. F., Ramos, S., Rapatsky, V., Reicherz, G., Richter, A., Robinet, F., Rocco, E., Rondio, E., Ryabchikov, D. I., Samoylenko, V. D., Sandacz, A., Santos, H., Sapozhnikov, M. G., Sarkar, S., Savin, I. A., Sbrizzai, G., Schiavon, P., Schill, C., Schluter, T., Schmitt, L., Schopferer, S., Schroder, W., Shevchenko, O. Y., Siebert, H. W., Silva, L., Sinha, L., Sissakian, A. N., Slunecka, M., Smirnov, G. I., Sosio, Stefano, Sozzi, F., Srnka, A., Stolarski, M., Sulc, M., Sulej, R., Takekawa, S., Tessaro, S., Tessarotto, F., Teufel, A., Tkatchev, L. G., Uhl, S., Uman, I., Virius, M., Vlassov, N. V., Vossen, A., Weitzel, Q., Windmolders, R., Wislicki, W., Wollny, H., Zaremba, K., Zavertyaev, M., Zemlyanichkina, E., Ziembicki, M., Zhao, J., Zhuravlev, N., Zvyagin, A., Collaboration, C., Alekseev, M. G., Alexakhin, V. Y. u., Alexandrov, Y. u., Alexeev, G. D., Amoroso, A., Austregesilo, A., Badełek, B., Balestra, F., Ball, J., Barth, J., Baum, G., Bedfer, Y., Bernhard, J., Bertini, R., Bettinelli, M., Birsa, Renato, Bisplinghoff, J., Bordalo, P., Bradamante, Franco, Bravar, A., Bressan, Andrea, Brona, G., Burtin, E., Bussa, M. P., Chaberny, D., Čotić, D., Chiosso, M., Chung, S. U., Cicuttin, A., Colantoni, M., Crespo, M. L., DALLA TORRE, Silvia, Das, S., Dasgupta, S. S., Denisov, O. Y. u., Dhara, L., Diaz, V., Donskov, S. V., Doshita, N., Duic, Venicio, Dünnweber, W., Efremov, A., El Alaoui, A., Eversheim, P. D., Eyrich, W., Faessler, M., Ferrero, A., Filin, A., Finger, M., Fischer, H., Franco, C., Friedrich, J. M., Garfagnini, R., Gautheron, F., Gavrichtchouk, O. P., Gazda, R., Gerassimov, S., Geyer, R., Giorgi, Marcello, Gnesi, I., Gobbo, B., Goertz, S., Grabmüller, S., Grasso, A., Grube, B., Gushterski, R., Guskov, A., Haas, F., von Harrach, D., Hasegawa, T., Heinsius, F. H., Hermann, R., Herrmann, F., Heß, C., Hinterberger, F., Horikawa, N., Höppner, C. h., D'Hose, N., Ilgner, C., Ishimoto, S., Ivanov, O., Ivanshin, Y. u., Iwata, T., Jahn, R., Jasinski, P., Jegou, G., Joosten, R., Kabuß, E., Käfer, W., Kang, D., Ketzer, B., Khaustov, G. V., Khokhlov, Y. u. A., Kisselev, Y. u., Klein, F., Klimaszewski, K., Koblitz, S., Koivuniemi, J. H., Kolosov, V. N., Kondo, K., Königsmann, K., Konopka, R., Konorov, I., Konstantinov, V. F., Korzenev, A., Kotzinian, A. M., Kouznetsov, O., Kowalik, K., Krämer, M., Kral, A., Kroumchtein, Z. V., Kuhn, R., Kunne, F., Kurek, K., Lauser, L., Le Goff, J. M., Lednev, A. A., Lehmann, A., Levorato, Stefano, Lichtenstadt, J., Liska, T., Maggiora, A., Maggiora, M., Magnon, A., Mallot, G. K., Mann, A., Marchand, C., Marroncle, J., Martin, Anna, Marzec, J., Massmann, F., Matsuda, T., Meyer, W., Michigami, T., Mikhailov, Y. u. V., Moinester, M. A., Mutter, A., Nagaytsev, A., Nagel, T., Nassalski, J., Negrini, T., Nerling, F., Neubert, S., Neyret, D., Nikolaenko, V. I., Nunes, A. S., Olshevsky, A. G., Ostrick, M., Padee, A., Panknin, R., Panzieri, D., Parsamyan, B., Paul, S., Pawlukiewicz Kaminska, B., Perevalova, E., Pesaro, Giulia, Peshekhonov, D. V., Piragino, G., Platchkov, S., Pochodzalla, J., Polak, J., Polyakov, V. A., Pontecorvo, G., Pretz, J., Quintans, C., Rajotte, J. F., Ramos, S., Rapatsky, V., Reicherz, G., Richter, A., Robinet, F., Rocco, E., Rondio, E., Ryabchikov, D. I., Samoylenko, V. D., Sandacz, A., Santos, H., Sapozhnikov, M. G., Sarkar, S., Savin, I. A., Sbrizzai, Giulio, Schiavon, Paolo, Schill, C., Schlüter, T., Schmitt, L., Schopferer, S., Schröder, W., Shevchenko, O. Y. u., Siebert, H. W., Silva, L., Sinha, L., Sissakian, A. N., Slunecka, M., Smirnov, G. I., Sosio, S., Sozzi, Federica, Srnka, A., Stolarski, M., Sulc, M., Sulej, R., Takekawa, Stefano, Tessaro, S., Tessarotto, F., Teufel, A., Tkatchev, L. G., Uhl, S., Uman, I., Virius, M., Vlassov, N. V., Vossen, A., Weitzel, Q., Windmolders, R., Wiślicki, W., Wollny, H., Zaremba, K., Zavertyaev, M., Zemlyanichkina, E., Ziembicki, M., Zhao, J., Zhuravlev, N., and Zvyagin, A.
Subjects: analysis, FOS: Physical sciences, COMPASS, QCD, High Energy Physics - Experiment, Bjorken sum rule, High Energy Physics - Experiment (hep-ex), Structure function, QCD analysis, Spin, Deep inelastic scattering, QCD analysi, Particle Physics - Experiment
Abstract: The inclusive double-spin asymmetry, A_1^p, has been measured at COMPASS in deepinelastic polarised muon scattering off a large polarised NH3 target. The data, collected in the year 2007, cover the range Q2 > 1 (GeV/c)^2, 0.004 < x < 0.7 and improve the statistical precision of g_1^p(x) by a factor of two in the region x < 0.02. The new proton asymmetries are combined with those previously published for the deuteron to extract the non-singlet spin-dependent structure function g_1^NS(x,Q2). The isovector quark density, Delta_q_3(x,Q2), is evaluated from a NLO QCD fit of g_1^NS. The first moment of Delta_q3 is in good agreement with the value predicted by the Bjorken sum rule and corresponds to a ratio of the axial and vector coupling constants g_A/g_V = 1.28+-0.07(stat)+-0.10(syst)., 12 pages, 5 figures
Published: 2010

22. Azimuthal asymmetries of charged hadrons produced by high-energy muons scattered off longitudinally polarised deuterons

Author: Alekseev, M. G., Alexakhin, V. Y., Alexandrov, Y., Alexeev, G. D., Amoroso, Antonio, Austregesilo, A., Badeek, B., Balestra, Ferruccio, Barth, J., Baum, G., Bedfer, Y., Bernhard, J., Bertini, R., Bettinelli, M., Birsa, R., Bisplinghoff, J., Bordalo, P., Bradamante, F., Bravar, A., Bressan, A., Brona, G., Burtin, E., Bussa, Maria Pia, Chaberny, D., Chiosso, Michela, Chung, S. U., Cicuttin, A., Colantoni, M., Crespo, M. L., Torre, S. D., Das, S., Dasgupta, S. S., Denisov, O. Y., Dhara, L., Diaz, V., Donskov, S. V., Doshita, N., Duic, V., Dunnweber, W., Efremov, A., Alaoui, A. E., Eversheim, P. D., Eyrich, W., Faessler, M., Ferrero, A., Filin, A., Finger, M., Fischer, H., Franco, C., Friedrich, J. M., Garfagnini, R., Gautheron, F., Gavrichtchouk, O. P., Gazda, R., Gerassimov, S., Geyer, R., Giorgi, M., Gnesi, I., Gobbo, B., Goertz, S., Grabmuller, S., Grasso, Antonino, Grube, B., Gushterski, R., Guskov, A., Haas, F., Harrach, D. v., Hasegawa, T., Heinsius, F. H., Herrmann, F., Hess, C., Hinterberger, F., Horikawa, N., Hoppner, C., D'Hose, N., Ilgner, C., Ishimoto, S., Ivanov, O., Ivanshin, Y., Iwata, T., Jahn, R., Jasinski, P., Jegou, G., Joosten, R., Kabuss, E., Kang, D., Ketzer, B., Khaustov, G. V., Khokhlov, Y. A., Kisselev, Y., Klein, F., Klimaszewski, K., Koblitz, S., Koivuniemi, J. H., Kolosov, V. N., Kondo, K., Konigsmann, K., Konopka, R., Konorov, I., Konstantinov, V. F., Korzenev, A., Kotzinian, A. M., Kouznetsov, O., Kowalik, K., Kramer, M., Kral, A., Kroumchtein, Z. V., Kuhn, R., Kunne, F., Kurek, K., Lauser, L., Le Goff, J. M., Lednev, A. A., Lehmann, A., Levorato, S., Lichtenstadt, J., Liska, T., Maggiora, A., Maggiora, Marco, Magnon, A., Mallot, G. K., Mann, A., Marchand, C., Martin, A., Marzec, J., Massmann, F., Matsuda, T., Meyer, W., Michigami, T., Mikhailov, Y. V., Moinester, M. A., Mutter, A., Nagaytsev, A., Nagel, T., Nassalski, J., Negrini, T., Nerling, F., Neubert, S., Neyret, D., Nikolaenko, V. I., Nunes, A. S., Olshevsky, A. G., Ostrick, M., Padee, A., Panknin, R., Panzieri, D., Parsamyan, B., Paul, S., Pawlukiewicz Kaminska, B., Perevalova, E., Pesaro, G., Peshekhonov, D. V., Piragino, G., Platchkov, S., Pochodzalla, J., Polak, J., Polyakov, V. A., Pontecorvo, G., Pretz, J., Quintans, C., Rajotte, J. F., Ramos, S., Rapatsky, V., Reicherz, G., Richter, A., Robinet, F., Rocco, E., Rondio, E., Ryabchikov, D. I., Samoylenko, V. D., Sandacz, A., Santos, H., Sapozhnikov, M. G., Sarkar, S., Savin, I. A., Sbrizzai, G., Schiavon, P., Schill, C., Schluter, T., Schmitt, L., Schopferer, S., Schroder, W., Shevchenko, O. Y., Siebert, H. W., Silva, L., Sinha, L., Sissakian, A. N., Slunecka, M., Smirnov, G. I., Sosio, Stefano, Sozzi, F., Srnka, A., Stolarski, M., Sulc, M., Sulej, R., Takekawa, S., Tessaro, S., Tessarotto, F., Teufel, A., Tkatchev, L. G., Uhl, S., Uman, I., Virius, M., Vlassov, N. V., Vossen, A., Weitzel, Q., Windmolders, R., Wislicki, W., Wollny, H., Zaremba, K., Zavertyaev, M., Zemlyanichkina, E., Ziembicki, M., Zhao, J., Zhuravlev, N., Zvyagin, A., Collaboration, C., Alekseev, M. G., Alexakhin, V. Y. u., Alexandrov, Y. u., Alexeev, G. D., Amoroso, A., Austregesilo, A., Badełek, B., Balestra, F., Barth, J., Baum, G., Bedfer, Y., Bernhard, J., Bertini, R., Bettinelli, M., Birsa, Renato, Bisplinghoff, J., Bordalo, P., Bradamante, Franco, Bravar, A., Bressan, Andrea, Brona, G., Burtin, E., Bussa, M. P., Chaberny, D., Chiosso, M., Chung, S. U., Cicuttin, A., Colantoni, M., Crespo, M. L., DALLA TORRE, Silvia, Das, S., Dasgupta, S. S., Denisov, O. Y. u., Dhara, L., Diaz, V., Donskov, S. V., Doshita, N., Duic, Venicio, Dünnweber, W., Efremov, A., El Alaoui, A., Eversheim, P. D., Eyrich, W., Faessler, M., Ferrero, A., Filin, A., Finger, M., Fischer, H., Franco, C., Friedrich, J. M., Garfagnini, R., Gautheron, F., Gavrichtchouk, O. P., Gazda, R., Gerassimov, S., Geyer, R., Giorgi, Marcello, Gnesi, I., Gobbo, B., Goertz, S., Grabmüller, S., Grasso, A., Grube, B., Gushterski, R., Guskov, A., Haas, F., von Harrach, D., Hasegawa, T., Heinsius, F. H., Herrmann, F., Heß, C., Hinterberger, F., Horikawa, N., Höppner, C. h., D'Hose, N., Ilgner, C., Ishimoto, S., Ivanov, O., Ivanshin, Y. u., Iwata, T., Jahn, R., Jasinski, P., Jegou, G., Joosten, R., Kabuß, E., Kang, D., Ketzer, B., Khaustov, G. V., Khokhlov, Y. u. A., Kisselev, Y. u., Klein, F., Klimaszewski, K., Koblitz, S., Koivuniemi, J. H., Kolosov, V. N., Kondo, K., Königsmann, K., Konopka, R., Konorov, I., Konstantinov, V. F., Korzenev, A., Kotzinian, A. M., Kouznetsov, O., Kowalik, K., Krämer, M., Kral, A., Kroumchtein, Z. V., Kuhn, R., Kunne, F., Kurek, K., Lauser, L., Le Goff, J. M., Lednev, A. A., Lehmann, A., Levorato, Stefano, Lichtenstadt, J., Liska, T., Maggiora, A., Maggiora, M., Magnon, A., Mallot, G. K., Mann, A., Marchand, C., Martin, Anna, Marzec, J., Massmann, F., Matsuda, T., Meyer, W., Michigami, T., Mikhailov, Y. u. V., Moinester, M. A., Mutter, A., Nagaytsev, A., Nagel, T., Nassalski, J., Negrini, T., Nerling, F., Neubert, S., Neyret, D., Nikolaenko, V. I., Nunes, A. S., Olshevsky, A. G., Ostrick, M., Padee, A., Panknin, R., Panzieri, D., Parsamyan, B., Paul, S., Pawlukiewicz Kaminska, B., Perevalova, E., Pesaro, Giulia, Peshekhonov, D. V., Piragino, G., Platchkov, S., Pochodzalla, J., Polak, J., Polyakov, V. A., Pontecorvo, G., Pretz, J., Quintans, C., Rajotte, J. F., Ramos, S., Rapatsky, V., Reicherz, G., Richter, A., Robinet, F., Rocco, E., Rondio, E., Ryabchikov, D. I., Samoylenko, V. D., Sandacz, A., Santos, H., Sapozhnikov, M. G., Sarkar, S., Savin, I. A., Sbrizzai, Giulio, Schiavon, Paolo, Schill, C., Schlüter, T., Schmitt, L., Schopferer, S., Schröder, W., Shevchenko, O. Y. u., Siebert, H. W., Silva, L., Sinha, L., Sissakian, A. N., Slunecka, M., Smirnov, G. I., Sosio, S., Sozzi, Federica, Srnka, A., Stolarski, M., Sulc, M., Sulej, R., Takekawa, Stefano, Tessaro, S., Tessarotto, F., Teufel, A., Tkatchev, L. G., Uhl, S., Uman, I., Virius, M., Vlassov, N. V., Vossen, A., Weitzel, Q., Windmolders, R., Wiślicki, W., Wollny, H., Zaremba, K., Zavertyaev, M., Zemlyanichkina, E., Ziembicki, M., Zhao, J., Zhuravlev, N., and Zvyagin, A.
Subjects: angular distribution: asymmetry, Physics and Astronomy (miscellaneous), parton distribution functions, 160 GeV, FOS: Physical sciences, parton: distribution function, polarisation, NUCLEONS, muon deuteron: semi-inclusive reaction, 01 natural sciences, spin dependence, fragmentation function, COMPASS, x-dependence, High Energy Physics - Experiment, High Energy Physics - Experiment (hep-ex), Experiment-HEP, 13.88.+e, LEPTOPRODUCTION, PROTON-SCATTERING, 0103 physical sciences, polarized target: longitudinal, DISTRIBUTIONS, lepton deep inelastic scattering, 010306 general physics, Nuclear Experiment, Engineering (miscellaneous), charged particle: electroproduction, SEMIINCLUSIVE ELECTROPRODUCTION, DEEP-INELASTIC-SCATTERING, DIS, 010308 nuclear & particles physics, spin asymmetry, DEPENDENT STRUCTURE-FUNCTION, amplitude analysis, transverse momentum: dependence, CERN SPS, SINGLE-SPIN ASYMMETRIES, TARGET, High Energy Physics::Experiment, 13.85.Ni, 13.60.Hb, Particle Physics - Experiment, experimental results, 13.85.Hd
Abstract: Azimuthal asymmetries in semi-inclusive production of positive (h^+) and negative hadrons (h^-) have been measured by scattering 160 GeV muons off longitudinally polarised deuterons at CERN. The asymmetries were decomposed in several terms according to their expected modulation in the azimuthal angle phi of the outgoing hadron. Each term receives contributions from one or several spin and transverse-momentum-dependent parton distribution and fragmentation functions. The amplitudes of all phi-modulation terms of the hadron asymmetries integrated over the kinematic variables are found to be consistent with zero within statistical errors, while the constant terms are nonzero and equal for h^+ and h^- within the statistical errors. The dependencies of the phi-modulated terms versus the Bjorken momentum fraction x, the hadron fractional momentum z, and the hadron transverse momentum p_h^T were studied. The x dependence of the constant terms for both positive and negative hadrons is in agreement with the longitudinal double-spin hadron asymmetries, measured in semi-inclusive deep-inelastic scattering. The x dependence of the sin phi-modulation term is less pronounced than that in the corresponding HERMES data. All other dependencies of the phi-modulation amplitudes are consistent with zero within the statistical errors., 12 pages, 11 Figures; revision 1 signs in Eq 5 corrected, polished
Published: 2010

23. Observation of a J^PC = 1-+ exotic resonance in diffractive dissociation of 190 GeV/c pi- into pi- pi- pi+

Author: Alekseev, M. G., Alexakhin, V. Y. u., Alexandrov, Y. u., Alexeev, G. D., Amoroso, A., Austregesilo, A., Badełek, B., Balestra, F., Ball, J., Barth, J., Baum, G., Bedfer, Y., Bernhard, J., Bertini, R., Bettinelli, M., Birsa, Renato, Bisplinghoff, J., Bordalo, P., Bradamante, Franco, Bravar, A., Bressan, Andrea, Brona, G., Burtin, E., Bussa, M. P., Chapiro, A., Chiosso, M., Chung, S. U., Cicuttin, A., Colantoni, M., Crespo, M. L., DALLA TORRE, Silvia, Dafni, T., Das, S., Dasgupta, S. S., Denisov, O. Y. u., Dhara, L., Diaz, V., Dinkelbach, A. M., Donskov, S. V., Doshita, N., Duic, Venicio, Dünnweber, W., Efremov, A., El Alaoui, A., Eversheim, P. D., Eyrich, W., Faessler, M., Ferrero, A., Finger, M., Finger, M. J. r., Fischer, H., Franco, C., Friedrich, J. M., Garfagnini, R., Gautheron, F., Gavrichtchouk, O. P., Gazda, R., Gerassimov, S., Geyer, R., Giorgi, Marcello, Gobbo, B., Goertz, S., Grabmüller, S., Grajek, O. A., Grasso, A., Grube, B., Gushterski, R., Guskov, A., Haas, F., von Harrach, D., Hasegawa, T., Heckmann, J., Heinsius, F. H., Hermann, R., Herrmann, F., Heß, C., Hinterberger, F., Horikawa, N., Höppner, C. h., D'Hose, N., Ilgner, C., Ishimoto, S., Ivanov, O., Ivanshin, Y. u., Iwata, T., Jahn, R., Jasinski, P., Jegou, G., Joosten, R., Kabuß, E., Kang, D., Ketzer, B., Khaustov, G. V., Khokhlov, Y. u. A., Kisselev, Y. u., Klein, F., Klimaszewski, K., Koblitz, S., Koivuniemi, J. H., Kolosov, V. N., Komissarov, E. V., Kondo, K., Königsmann, K., Konopka, R., Konorov, I., Konstantinov, V. F., Korzenev, A., Kotzinian, A. M., Kouznetsov, O., Kowalik, K., Krämer, M., Kral, A., Kroumchtein, Z. V., Kuhn, R., Kunne, F., Kurek, K., Lauser, L., Le Goff, J. M., Lednev, A. A., Lehmann, A., Levorato, S., Lichtenstadt, J., Liska, T., Maggiora, A., Maggiora, M., Magnon, A., Mallot, G. K., Mann, A., Marchand, C., Marroncle, J., Martin, Anna, Marzec, J., Massmann, F., Matsuda, T., Maximov, A. N., Meyer, W., Michigami, T., Mikhailov, Y. u. V., Moinester, M. A., Mutter, A., Nagaytsev, A., Nagel, T., Nassalski, J., Negrini, T., Nerling, F., Neubert, S., Neyret, D., Nikolaenko, V. I., Olshevsky, A. G., Ostrick, M., Padee, A., Panknin, R., Panzieri, D., Parsamyan, B., Paul, S., Pawlukiewicz Kaminska, B., Perevalova, E., Pesaro, G., Peshekhonov, D. V., Piragino, G., Platchkov, S., Pochodzalla, J., Polak, J., Polyakov, V. A., Pontecorvo, G., Pretz, J., Quintans, C., Rajotte, J. F., Ramos, S., Rapatsky, V., Reicherz, G., Reggiani, D., Richter, A., Robinet, F., Rocco, E., Rondio, E., Ryabchikov, D. I., Samoylenko, V. D., Sandacz, A., Santos, H., Sapozhnikov, M. G., Sarkar, S., Savin, I. A., Sbrizzai, Giulio, Schiavon, Paolo, Schill, C., Schlüter, T., Schmitt, L., Schopferer, S., Schröder, W., Shevchenko, O. Y. u., Siebert, H. W., Silva, L., Sinha, L., Sissakian, A. N., Slunecka, M., Smirnov, G. I., Sosio, S., Sozzi, Federica, Srnka, A., Stolarski, M., Sulc, M., Sulej, R., Takekawa, S., Tessaro, S., Tessarotto, F., Teufel, A., Tkatchev, L. G., Uhl, S., Uman, I., Venugopal, G., Virius, M., Vlassov, N. V., Vossen, A., Weitzel, Q., Windmolders, R., Wiślicki, W., Wollny, H., Zaremba, K., Zavertyaev, M., Zemlyanichkina, E., Ziembicki, M., Zhao, J., Zhuravlev, N., Zvyagin, A., Alekseev, M. G., Alexakhin, V. Y. u., Alexandrov, Y. u., Alexeev, G. D., Amoroso, A., Austregesilo, A., Badełek, B., Balestra, F., Ball, J., Barth, J., Baum, G., Bedfer, Y., Bernhard, J., Bertini, R., Bettinelli, M., Birsa, Renato, Bisplinghoff, J., Bordalo, P., Bradamante, Franco, Bravar, A., Bressan, Andrea, Brona, G., Burtin, E., Bussa, M. P., Chapiro, A., Chiosso, M., Chung, S. U., Cicuttin, A., Colantoni, M., Crespo, M. L., DALLA TORRE, Silvia, Dafni, T., Das, S., Dasgupta, S. S., Denisov, O. Y. u., Dhara, L., Diaz, V., Dinkelbach, A. M., Donskov, S. V., Doshita, N., Duic, Venicio, Dünnweber, W., Efremov, A., El Alaoui, A., Eversheim, P. D., Eyrich, W., Faessler, M., Ferrero, A., Finger, M., Finger, M. J. r., Fischer, H., Franco, C., Friedrich, J. M., Garfagnini, R., Gautheron, F., Gavrichtchouk, O. P., Gazda, R., Gerassimov, S., Geyer, R., Giorgi, Marcello, Gobbo, B., Goertz, S., Grabmüller, S., Grajek, O. A., Grasso, A., Grube, B., Gushterski, R., Guskov, A., Haas, F., von Harrach, D., Hasegawa, T., Heckmann, J., Heinsius, F. H., Hermann, R., Herrmann, F., Heß, C., Hinterberger, F., Horikawa, N., Höppner, C. h., D'Hose, N., Ilgner, C., Ishimoto, S., Ivanov, O., Ivanshin, Y. u., Iwata, T., Jahn, R., Jasinski, P., Jegou, G., Joosten, R., Kabuß, E., Kang, D., Ketzer, B., Khaustov, G. V., Khokhlov, Y. u. A., Kisselev, Y. u., Klein, F., Klimaszewski, K., Koblitz, S., Koivuniemi, J. H., Kolosov, V. N., Komissarov, E. V., Kondo, K., Königsmann, K., Konopka, R., Konorov, I., Konstantinov, V. F., Korzenev, A., Kotzinian, A. M., Kouznetsov, O., Kowalik, K., Krämer, M., Kral, A., Kroumchtein, Z. V., Kuhn, R., Kunne, F., Kurek, K., Lauser, L., Le Goff, J. M., Lednev, A. A., Lehmann, A., Levorato, S., Lichtenstadt, J., Liska, T., Maggiora, A., Maggiora, M., Magnon, A., Mallot, G. K., Mann, A., Marchand, C., Marroncle, J., Martin, Anna, Marzec, J., Massmann, F., Matsuda, T., Maximov, A. N., Meyer, W., Michigami, T., Mikhailov, Y. u. V., Moinester, M. A., Mutter, A., Nagaytsev, A., Nagel, T., Nassalski, J., Negrini, T., Nerling, F., Neubert, S., Neyret, D., Nikolaenko, V. I., Olshevsky, A. G., Ostrick, M., Padee, A., Panknin, R., Panzieri, D., Parsamyan, B., Paul, S., Pawlukiewicz Kaminska, B., Perevalova, E., Pesaro, G., Peshekhonov, D. V., Piragino, G., Platchkov, S., Pochodzalla, J., Polak, J., Polyakov, V. A., Pontecorvo, G., Pretz, J., Quintans, C., Rajotte, J. F., Ramos, S., Rapatsky, V., Reicherz, G., Reggiani, D., Richter, A., Robinet, F., Rocco, E., Rondio, E., Ryabchikov, D. I., Samoylenko, V. D., Sandacz, A., Santos, H., Sapozhnikov, M. G., Sarkar, S., Savin, I. A., Sbrizzai, Giulio, Schiavon, Paolo, Schill, C., Schlüter, T., Schmitt, L., Schopferer, S., Schröder, W., Shevchenko, O. Y. u., Siebert, H. W., Silva, L., Sinha, L., Sissakian, A. N., Slunecka, M., Smirnov, G. I., Sosio, S., Sozzi, Federica, Srnka, A., Stolarski, M., Sulc, M., Sulej, R., Takekawa, S., Tessaro, S., Tessarotto, F., Teufel, A., Tkatchev, L. G., Uhl, S., Uman, I., Venugopal, G., Virius, M., Vlassov, N. V., Vossen, A., Weitzel, Q., Windmolders, R., Wiślicki, W., Wollny, H., Zaremba, K., Zavertyaev, M., Zemlyanichkina, E., Ziembicki, M., Zhao, J., Zhuravlev, N., and Zvyagin, A.
Subjects: MESON PRODUCTION, diffraction: dissociation, FOS: Physical sciences, COMPASS, High Energy Physics - Experiment, High Energy Physics - Experiment (hep-ex), mass: width, Experiment-HEP, 1960 GeV/c, 14.40.Rt, 14.40.Be, gluonic excitations, light meson spectrum, a2(1320), Nuclear Experiment, a1(1260), pi- nucleus: inclusive reaction, hybrids, lead, pi: multiple production, REST, hadron spectroscopy, mass spectrum: (pi+ 2pi-), exotic mesons, 12.39.Mk, partial wave analysis, resonance: exotic, CERN SPS, PARTICLE PHYSICS, HYBRID, STATES, DECAY, WAVE, VES, 13.25.Jx, pi2(1670), High Energy Physics::Experiment, Particle Physics - Experiment
Abstract: The COMPASS experiment at the CERN SPS has studied the diffractive dissociation of negative pions into the pi- pi- pi+ final state using a 190 GeV/c pion beam hitting a lead target. A partial wave analysis has been performed on a sample of 420000 events taken at values of the squared 4-momentum transfer t' between 0.1 and 1 GeV^2/c^2. The well-known resonances a1(1260), a2(1320), and pi2(1670) are clearly observed. In addition, the data show a significant natural parity exchange production of a resonance with spin-exotic quantum numbers J^PC = 1-+ at 1.66 GeV/c^2 decaying to rho pi. The resonant nature of this wave is evident from the mass-dependent phase differences to the J^PC = 2-+ and 1++ waves. From a mass-dependent fit a resonance mass of 1660 +- 10+0-64 MeV/c^2 and a width of 269+-21+42-64 MeV/c^2 is deduced., Comment: 7 page, 3 figures; version 2 gives some more details, data unchanged; version 3 updated authors, text shortened, data unchanged
Published: 2009
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24. Hadron transverse momentum distributions in muon deep inelastic scattering at 160 GeV/c

Author: Adolph, C., Alekseev, M. G., Alexakhin, V. Yu., Alexandrov, Yu., Alexeev, G. D., Amoroso, A., Andrieux, V., Austregesilo, A., Badelek, B., Balestra, F., Barth, J., Baum, G., Bedfer, Y., Berlin, A., Bernhard, J., Bertini, R., Bicker, K., Bieling, J., Birsa, R., Bisplinghoff, J., Boer, M., Bordalo, P., Bradamante, F., Braun, C., Bravar, A., Bressan, A., Buechele, M., Burtin, E., Capozza, L., Chiosso, M., Chung, S. U., Cicuttin, A., Crespo, M. L., Torre, S. Dalla, Dasgupta, S. S., Dasgupta, S., Denisov, O. Yu., Donskov, S. V., Doshita, N., Duic, V., Duennweber, W., Dziewiecki, M., Efremov, A., Elia, C., Eversheim, P. D., Eyrich, W., Faessler, M., Ferrero, A., Filin, A., Finger, M., Finger jr., M., Fischer, H., Franco, C., von Hohenesche, N. du Fresne, Friedrich, J. M., Frolov, V., Garfagnini, R., Gautheron, F., Gavrichtchouk, O. P., Gerassimov, S., Geyer, R., Giorgi, M., Gnesi, I., Gobbo, B., Goertz, S., Grabmueller, S., Grasso, A., Grube, B., Gushterski, R., Guskov, A., Guthoerl, T., Haas, F., von Harrach, D., Heinsius, F. H., Herrmann, F., Hess, C., Hinterberger, F., Hoeppner, Ch., Horikawa, N., d'Hose, N., Huber, S., Ishimoto, S., Ivanshin, Yu., Iwata, T., Jahn, R., Jary, V., Jasinski, P., Joosten, R., Kabuss, E., Kang, D., Ketzer, B., Khaustov, G. V., Khokhlov, Yu. A., Kisselev, Yu., Klein, F., Klimaszewski, K., Koivuniemi, J. H., Kolosov, V. N., Kondo, K., Koenigsmann, K., Konorov, I., Konstantinov, V. F., Kotzinian, A. M., Kouznetsov, O., Kraemer, M., Kroumchtein, Z. V., Kuchinski, N., Kunne, F., Kurek, K., Kurjata, R. P., Lednev, A. A., Lehmann, A., Levorato, S., Lichtenstadt, J., Maggiora, A., Magnon, A., Makke, N., Mallot, G. K., Mann, A., Marchand, C., Martin, A., Marzec, J., Matsuda, H., Matsuda, T., Meshcheryakov, G., Meyer, W., Michigami, T., Mikhailov, Yu. V., Miyachi, Y., Morreale, A., Nagaytsev, A., Nagel, T., Nerling, F., Neubert, S., Neyret, D., Nikolaenko, V. I., Novy, J., Nowak, W. -D., Nunes, A. S., Olshevsky, A. G., Ostrick, M., Panknin, R., Panzieri, D., Parsamyan, B., Paul, S., Piragino, G., Platchkov, S., Pochodzalla, J., Polak, J., Polyakov, V. A., Pretz, J., Quaresma, M., Quintans, C., Rajotte, J. -F., Ramos, S., Reicherz, G., Rocco, E., Rodionov, V., Rondio, E., Rossiyskaya, N. S., Ryabchikov, D. I., Samoylenko, V. D., Sandacz, A., Sapozhnikov, M. G., Sarkar, S., Savin, I. A., Sbrizzai, G., Schiavon, P., Schill, C., Schlueter, T., Schmidt, A., Schmidt, K., Schmitt, L., Schmieden, H., Schoenning, K., Schopferer, S., Schott, M., Shevchenko, O. Yu., Silva, L., Sinha, L., Sirtl, S., Slunecka, M., Sosio, S., Sozzi, F., Srnka, A., Steiger, L., Stolarski, M., Sulc, M., Sulej, R., Suzuki, H., Sznajder, P., Takekawa, S., Ter Wolbeek, J., Tessaro, S., Tessarotto, F., Thibaud, F., Uhl, S., Uman, I., Vandenbroucke, M., Virius, M., Wang, L., Weisrock, T., Wilfert, M., Windmolders, R., Wiślicki, W., Wollny, H., Zaremba, K., Zavertyaev, M., Zemlyanichkina, E., Zhuravlev, N., Ziembicki, M., C., Adolph, M. G., Alekseev, Alexakhin, V. Y. u., Alexandrov, Y. u., G. D., Alexeev, A., Amoroso, V., Andrieux, A., Austregesilo, B., Badełek, F., Balestra, J., Barth, G., Baum, Y., Bedfer, A., Berlin, J., Bernhard, R., Bertini, K., Bicker, J., Bieling, R., Birsa, J., Bisplinghoff, M., Boer, P., Bordalo, Bradamante, Franco, C., Braun, A., Bravar, Bressan, Andrea, M., Büchele, E., Burtin, L., Capozza, M., Chiosso, S. U., Chung, A., Cicuttin, M. L., Crespo, S., Dalla torre, S. S., Dasgupta, S., Dasgupta, Denisov, O. Y. u., S. V., Donskov, N., Doshita, Duic, Venicio, W., Dünnweber, M., Dziewiecki, A., Efremov, Elia, Carmine, P. D., Eversheim, W., Eyrich, M., Faessler, A., Ferrero, A., Filin, M., Finger, H., Fischer, C., Franco, N., Du fresne von hohenesche, J. M., Friedrich, V., Frolov, R., Garfagnini, F., Gautheron, O. P., Gavrichtchouk, S., Gerassimov, R., Geyer, M., Giorgi, I., Gnesi, B., Gobbo, S., Goertz, S., Grabmüller, A., Grasso, B., Grube, R., Gushterski, A., Guskov, T., Guthörl, F., Haa, D., Harrach, F. H., Heinsiu, F., Herrmann, C., Heß, F., Hinterberger, Höppner, C. h., N., Horikawa, N., D’Hose, S., Huber, S., Ishimoto, Ivanshin, Y. u., T., Iwata, R., Jahn, V., Jary, P., Jasinski, R., Joosten, E., Kabuß, D., Kang, B., Ketzer, G. V., Khaustov, Khokhlov, Y. u. A., Kisselev, Y. u., F., Klein, K., Klimaszewski, J. H., Koivuniemi, V. N., Kolosov, K., Kondo, K., Königsmann, I., Konorov, V. F., Konstantinov, A. M., Kotzinian, O., Kouznetsov, M., Krämer, Z. V., Kroumchtein, N., Kuchinski, F., Kunne, K., Kurek, R. P., Kurjata, A. A., Lednev, A., Lehmann, S., Levorato, J., Lichtenstadt, A., Maggiora, A., Magnon, Makke, Nour, G. K., Mallot, A., Mann, C., Marchand, Martin, Anna, J., Marzec, H., Matsuda, T., Matsuda, G., Meshcheryakov, W., Meyer, T., Michigami, Mikhailov, Y. u. V., A., Morreale, A., Nagaytsev, T., Nagel, F., Nerling, S., Neubert, D., Neyret, V. I., Nikolaenko, J., Novy, W. D., Nowak, A. S., Nune, A. G., Olshevsky, M., Ostrick, R., Panknin, D., Panzieri, B., Parsamyan, S., Paul, G., Piragino, S., Platchkov, J., Pochodzalla, J., Polak, V. A., Polyakov, J., Pretz, M., Quaresma, C., Quintan, J. F., Rajotte, S., Ramo, G., Reicherz, E., Rocco, V., Rodionov, E., Rondio, N. S., Rossiyskaya, D. I., Ryabchikov, V. D., Samoylenko, A., Sandacz, M. G., Sapozhnikov, S., Sarkar, I. A., Savin, Sbrizzai, Giulio, Schiavon, Paolo, C., Schill, T., Schlüter, A., Schmidt, K., Schmidt, L., Schmitt, H., Schmïden, K., Schönning, S., Schopferer, M., Schott, Shevchenko, O. Y. u., L., Silva, L., Sinha, S., Sirtl, M., Slunecka, S., Sosio, Sozzi, Federica, A., Srnka, L., Steiger, M., Stolarski, M., Sulc, R., Sulej, H., Suzuki, P., Sznajder, S., Takekawa, J., Ter wolbeek, Tessaro, Susanna, F., Tessarotto, F., Thibaud, S., Uhl, I., Uman, M., Vandenbroucke, M., Viriu, L., Wang, T., Weisrock, M., Wilfert, R., Windmolder, W., Wiślicki, H., Wollny, K., Zaremba, M., Zavertyaev, E., Zemlyanichkina, N., Zhuravlev, and M., Ziembicki
Subjects: SIDIS, TMD, Particle physics, Physics and Astronomy (miscellaneous), Hadron, FOS: Physical sciences, Parton, COMPASS, 01 natural sciences, High Energy Physics - Experiment, High Energy Physics - Experiment (hep-ex), High Energy Physics - Phenomenology (hep-ph), 0103 physical sciences, NUCLEON, Nuclear Experiment, 010306 general physics, Engineering (miscellaneous), Quantum chromodynamics, Physics, Muon, 010308 nuclear & particles physics, Scattering, High Energy Physics::Phenomenology, Order (ring theory), Deep inelastic scattering, Exponential function, High Energy Physics - Phenomenology, High Energy Physics::Experiment, Particle Physics - Experiment
Abstract: Multiplicities of charged hadrons produced in deep inelastic muon scattering off a $^6$LiD target have been measured as a function of the DIS variables $x_{Bj}$, $Q^2$, $W^2$ and the final state hadron variables $p_T$ and $z$. The $p_T^2$ distributions are fitted with a single exponential function at low values of $p_T^2$ to determine the dependence of $\langle p_T^2 \rangle$ on $x_{Bj}$, $Q^2$, $W^2$ and $z$. The $z$-dependence of $\langle p_T^2 \rangle$ is shown to be a potential tool to extract the average intrinsic transverse momentum squared of partons, $\langle k_{\perp}^2 \rangle$, as a function of $x_{Bj}$ and $Q^2$ in a leading order QCD parton model., 18 pages, 13 figures and 3 tables
Published: 2013

25. Measurement of the cross section for high-p_{T} hadron production in the scattering of 160-GeV/c muons off nucleons

Author: Adolph, C., Alekseev, M. G., Alexakhin, V. Y. u., Alexandrov, Y. u., Alexeev, G. D., Amoroso, Antonio, Andrieux, V., Austregesilo, A., Badełek, B., Balestra, Ferruccio, Barth, J., Baum, G., Bedfer, Y., Berlin, A., Bernhard, J., Bertini, Raimondo Pietro, Bicker, K., Bieling, J., Birsa, R., Bisplinghoff, J., Boer, M., Bordalo, P., Bradamante, F., Braun, C., Bravar, A., Bressan, A., Büchele, M., Burtin, E., Capozza, L., Chiosso, Michela, Chung, S. U., Cicuttin, A., Crespo, M. L., Dalla Torre, S., Dasgupta, S. S., Dasgupta, S., Denisov, O. Y. u., Donskov, S. V., Doshita, N., Duic, V., Dünnweber, W., Dziewiecki, M., Efremov, A., Elia, C., Eversheim, P. D., Eyrich, W., Faessler, M., Ferrero, A., Filin, A., Finger, M., Fischer, H., Franco, C., du Fresne von Hohenesche, N., Friedrich, J. M., Frolov, V., Garfagnini, Raffaello, Gautheron, F., Gavrichtchouk, O. P., Gerassimov, S., Geyer, R., Giorgi, M., Gnesi, Ivan, Gobbo, B., Goertz, S., Grabmüller, S., Grasso, Antonino, Grube, B., Gushterski, R., Guskov, A., Guthörl, T., Haas, F., von Harrach, D., Heinsius, F. H., Herrmann, F., Heß, C., Hinterberger, F., Höppner, C. h., Horikawa, N., D’Hose, N., Huber, S., Ishimoto, S., Ivanshin, Y. u., Iwata, T., Jahn, R., Jary, V., Jasinski, P., Joosten, R., Kabuß, E., Kang, D., Ketzer, B., Khaustov, G. V., Khokhlov, Y. u. A., Kisselev, Y. u., Klein, F., Klimaszewski, K., Koivuniemi, J. H., Kolosov, V. N., Kondo, K., Königsmann, K., Konorov, I., Konstantinov, V. F., Kotzinian, A. M., Kouznetsov, O., Krämer, M., Kroumchtein, Z. V., Kuchinski, N., Kunne, F., Kurek, K., Kurjata, R. P., Lednev, A. A., Lehmann, A., Levorato, S., Lichtenstadt, J., Maggiora, A., Magnon, A., Makke, N., Mallot, G. K., Mann, A., Marchand, C., Martin, A., Marzec, J., Matsuda, H., Matsuda, T., Meshcheryakov, G., Meyer, W., Michigami, T., Mikhailov, Y. u. V., Miyachi, Y., Morreale, A., Nagaytsev, A., Nagel, T., Nerling, F., Neubert, S., Neyret, D., Nikolaenko, V. I., Novakova, C., Novy, J., Nowak, W. D., Nunes, A. S., Olshevsky, A. G., Ostrick, M., Panknin, R., Panzieri, D., Parsamyan, B., Paul, S., Pesek, M., Piragino, Guido, Platchkov, S., Pochodzalla, J., Polak, J., Polyakov, V. A., Pretz, J., Quaresma, M., Quintans, C., Ramos, S., Reicherz, G., Rocco, E., Rodionov, V., Rondio, E., Rossiyskaya, N. S., Ryabchikov, D. I., Samoylenko, V. D., Sandacz, A., Sapozhnikov, M. G., Sarkar, S., Savin, I. A., Sbrizzai, G., Schiavon, P., Schill, C., Schlüter, T., Schmidt, A., Schmidt, K., Schmïden, H., Schmitt, L., Schönning, K., Schopferer, S., Schott, M., Shevchenko, O. Y. u., Silva, L., Sinha, L., Sirtl, S., Slunecka, M., Sosio, Stefano, Sozzi, F., Srnka, A., Steiger, L., Stolarski, M., Sulc, M., Sulej, R., Suzuki, H., Sznajder, P., Takekawa, S., Ter Wolbeek, J., Tessaro, S., Tessarotto, F., Thibaud, F., Uhl, S., Uman, I., Vandenbroucke, M., Virius, M., Vondra, J., Wang, L., Weisrock, T., Wilfert, M., Windmolders, R., Wiślicki, W., Wollny, H., Zaremba, K., Zavertyaev, M., Zemlyanichkina, E., Zhuravlev, N., and Ziembicki, M.
Subjects: COLLISIONS, TRANSVERSE-MOMENTUM, ANGULAR-DEPENDENCE, PHOTOPRODUCTION, PROTON, COMPASS
Published: 2013

26. Long term experience and performance of COMPASS RICH-1

Author: Tessarotto, F., Abbon, P., Alexeev, M., Birsa, R., Bordalo, P., Bradamante, F., Bressan, A., Büchele, M., Chiosso, M., Ciliberti, P., Dafni, T., Torre, S. Dalla, Dasgupta, S., Delagnes, E., Denisov, O., Duic, V., Ferrero, A., Finger, M., Fischer, H., Franco, C., Gerassimov, S., Gobbo, B., Gregori, M., Herrmann, F., Ketzer, B., Königsmann, K., Konorov, I., Kunne, F., Levorato, S., Maggiora, A., Makke, N., Martin, A., Menon, G., Neyret, D., Novakova, K., Panzieri, D., Paul, S., Pereira, F. A., Polak, J., Rocco, E., Santos, C. A., Sbrizzai, G., Schiavon, P., Schopferer, S., Slunecka, M., Sozzi, F., Steiger, L., Sulc, M., Takekawa, S., Sub Subatomic Physics (SAP), Subatomic Physics, Département d'Electronique, des Détecteurs et d'Informatique pour la Physique (ex SEDI) (DEDIP), Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, Département de Physique Nucléaire (ex SPhN) (DPHN), Physikalisches Institut [Freiburg], Albert-Ludwigs-Universität Freiburg, COMPASS, Sub Subatomic Physics (SAP), Subatomic Physics, Tessarotto, F, Abbon, P, Alexeev, M, Birsa, R, Bordalo, P, Bradamante, Franco, Bressan, Andrea, Büchele, M, Chiosso, M, Ciliberti, Piero, Dafni, T, Torre, S. Dalla, Dasgupta, SHUDDHA SHANKAR, Delagnes, E, Denisov, O, Duic, Venicio, Ferrero, A, Finger, M, M. Finger Jr, M. Finger Jr, Fischer, H, Franco, C, Gerassimov, S, Gobbo, B, Gregori, M, Herrmann, F, Ketzer, B, Königsmann, K, Konorov, I, Kunne, F, Levorato, Stefano, Maggiora, A, Makke, Nour, Martin, Anna, Menon, G, Neyret, D, Novakova, K, Panzieri, D, Paul, S, Pereira, F. A, Polak, J, Rocco, E, Santos, C. A, Sbrizzai, G, Schiavon, Paolo, Schopferer, S, Slunecka, M, Sozzi, Federica, Steiger, Luka, Sulc, M, and Takekawa, Stefano
Subjects: Physics::Instrumentation and Detectors, Cherenkov detector, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], Particle detector, law.invention, Particle identification methods, Photon detectors for UV, visible and IR photons (vacuum), Optics, law, Compass, Carbon–fluorine bond, COMPASS experiment, visible and IR photons (gas), Photon detectors for UV, Instrumentation, Mathematical Physics, Physics, Large Hadron Collider, Spectrometer, business.industry, Cherenkov detectors, Photon detectors for UV, visible and IR photons (gas), Photon detectors for UV visible and IR photons (gas), visible and IR photons (vacuum), Upgrade, Physics::Accelerator Physics, Optoelectronics, High Energy Physics::Experiment, Photon detectors for UV visible and IR photons (vacuum), Particle identification methods, Cherenkov detectors, Photon detectors for UV visible and IR photons (gas), Photon detectors for UV visible and IR photons (vacuum), business
Abstract: International audience; COMPASS RICH-1 is a large size gaseous Imaging Cherenkov Detector providinghadron identification in the range from 3 to 55 GeV/c, in the wide acceptance spectrometer of theCOMPASS Experiment at CERN SPS.It uses a 3m long C4F10 radiator, a 21m2 large VUV mirror surface and two kinds of photondetectors: MAPMTs and MWPCs with CsI photocathodes, covering a total of 5.5m2. It is inoperation since 2002 and its performance increased thanks to progressive optimization and to amajor upgrade of its photon detection system, implemented in 2006; a new upgrade is foreseen for2016, with the use of MPGD-based photon detectors.The main characteristics of COMPASS RICH-1 components are described and the most criticalaspects related to the C4F10 radiator gas system, to the mirrors and their alignment, as well asthe performance of the photon detectors are presented and discussed. The response of the MWPCsand the observed evolution of the effective quantum efficiency of the CsI photocathodes is analyzed.The properties and performance of the MAPMTs with individual fused lens telescopes arepresented together with the readout characteristics. The PID performance of COMPASS RICH-1is discussed and the future upgrade program is mentioned.
Published: 2014

27. First Measurement of Chiral Dynamics in π^{-}γ→π^{-}π^{-}π^{+}

Author: Adolph, C., Alekseev, M. G., Alexakhin, V. Y., Alexandrov, Y., Alexeev, G. D., Amoroso, Antonio, Antonov, A. A., Austregesilo, A., Badelek, B., Balestra, Ferruccio, Barth, J., Baum, G., Bedfer, Y., Bernhard, J., Bertini, Raimondo Pietro, Bettinelli, M., Bicker, K. A., Birsa, R., Bisplinghoff, J., Bordalo, P., Bradamante, F., Braun, C., Bravar, A., Bressan, A., Burtin, E., Chaberny, D., Chiosso, Michela, Chung, S. U., Cicuttin, A., Crespo, M. L., Torre, S. D., Das, S., Dasgupta, S. S., Denisov, O. Y., Dhara, L., Donskov, S. V., Doshita, N., Duic, V., Duennweber, W., Dziewiecki, M., Efremov, A., Elia, C., Eversheim, P. D., Eyrich, W., Faessler, M., Ferrero, A., Filin, A., Finger, M., J. F. M., Fischer, H., Franco, C., Fresne, N. d., Friedrich, J. M., Garfagnini, Raffaello, Gautheron, F., Gavrichtchouk, O. P., Gazda, R., Gerassimov, S., Geyer, R., Giorgi, M., Gnesi, Ivan, Gobbo, B., Goertz, S., Grabmueller, S., Grasso, Antonino, Grube, B., Gushterski, R., Guskov, A., Haas, F., Harrach, D. v., Hasegawa, T., Heinsius, F. H., Herrmann, F., Hess, C., Hinterberger, F., Horikawa, N., Hoeppner, C., D'Hose, N., Huber, S., Ishimoto, S., Ivanov, O., Ivanshin, Y., Iwata, T., Jahn, R., Jasinski, P., Jegou, G., Joosten, R., Kabuss, E., Kang, D., Ketzer, B., Khaustov, G. V., Khokhlov, Y. A., Kisselev, Y., Klein, F., Klimaszewski, K., Koblitz, S., Koivuniemi, J. H., Kolosov, V. N., Kondo, K., Koenigsmann, K., Konorov, I., Konstantinov, V. F., Korzenev, A., Kotzinian, A. M., Kouznetsov, O., Kraemer, M., Kroumchtein, Z. V., Kunne, F., Kurek, K., Lauser, L., Lednev, A. A., Lehmann, A., Levorato, S., Lichtenstadt, J., Maggiora, A., Magnon, A., Makke, N., Mallot, G. K., Mann, A., Marchand, C., Martin, A., Marzec, J., Massmann, F., Matsuda, T., Meyer, W., Michigami, T., Mikhailov, Y. V., Moinester, M. A., Morreale, A., Mutter, A., Nagaytsev, A., Nagel, T., Nerling, F., Neubert, S., Neyret, D., Nikolaenko, V. I., W. . . D., Nunes, A. S., Olshevsky, A. G., Ostrick, M., Padee, A., Panknin, R., Panzieri, Daniele, Parsamyan, B., Paul, S., Perevalova, E., Pesaro, G., Peshekhonov, D. V., Piragino, Guido, Platchkov, S., Pochodzalla, J., Polak, J., Polyakov, V. A., Pontecorvo, G., Pretz, J., Quintans, C., J. . . F., Ramos, S., Rapatsky, V., Reicherz, G., Richter, A., Rocco, E., Rondio, E., Rossiyskaya, N. S., Ryabchikov, D. I., Samoylenko, V. D., Sandacz, A., Sapozhnikov, M. G., Sarkar, S., Savin, I. A., Sbrizzai, G., Schiavon, P., Schill, C., Schlueter, T., Schmitt, L., Schoenning, K., Schopferer, S., Schroeder, W., Shevchenko, O. Y., H. . . W., Silva, L., Sinha, L., Sissakian, A. N., Slunecka, M., Smirnov, G. I., Sosio, Stefano, Sozzi, F., Srnka, A., Stolarski, M., Sulc, M., Sulej, R., Sznajder, P., Takekawa, Stefano, Wolbeek, J. T., Tessaro, S., Tessarotto, F., Teufel, A., Tkatchev, L. G., Uhl, S., Uman, I., Vandenbroucke, M., Virius, M., Vlassov, N. V., Windmolders, R., Wislicki, W., Wollny, H., Zaremba, K., Zavertyaev, M., Zemlyanichkina, E., Ziembicki, M., Zhuravlev, N., Zvyagin, A., C., Adolph, M., Alekseev, V., Alexakhin, Alexandrov, Y. u., G., Alexeev, A., Amoroso, A., Antonov, A., Austregesilo, B., Badełek, F., Balestra, J., Barth, G., Baum, Y., Bedfer, J., Bernhard, R., Bertini, M., Bettinelli, K., Bicker, Birsa, Renato, J., Bisplinghoff, P., Bordalo, Bradamante, Franco, C., Braun, A., Bravar, Bressan, Andrea, E., Burtin, D., Chaberny, M., Chiosso, S., Chung, A., Cicuttin, M., Crespo, DALLA TORRE, Silvia, S., Da, S., Dasgupta, O., Denisov, L., Dhara, S., Donskov, N., Doshita, Duic, Venicio, W., Dünnweber, M., Dziewiecki, A., Efremov, Elia, Carmine, P., Eversheim, W., Eyrich, M., Faessler, A., Ferrero, A., Filin, M., Finger, H., Fischer, C., Franco, N., du Fresne von Hohenesche, J., Friedrich, R., Garfagnini, F., Gautheron, O., Gavrichtchouk, R., Gazda, S., Gerassimov, R., Geyer, Giorgi, Marcello, I., Gnesi, B., Gobbo, S., Goertz, S., Grabmüller, A., Grasso, B., Grube, R., Gushterski, A., Guskov, F., Haa, D., von Harrach, T., Hasegawa, F., Heinsiu, F., Herrmann, C., He, F., Hinterberger, N., Horikawa, Höppner, C. h., N., D’Hose, S., Huber, S., Ishimoto, O., Ivanov, Ivanshin, Y. u., T., Iwata, R., Jahn, P., Jasinski, G., Jegou, R., Joosten, E., Kabu, D., Kang, B., Ketzer, G., Khaustov, Khokhlov, Y. u., Kisselev, Y. u., F., Klein, K., Klimaszewski, S., Koblitz, J., Koivuniemi, V., Kolosov, K., Kondo, K., Königsmann, I., Konorov, V., Konstantinov, A., Korzenev, A., Kotzinian, O., Kouznetsov, M., Krämer, Z., Kroumchtein, F., Kunne, K., Kurek, L., Lauser, A., Lednev, A., Lehmann, Levorato, Stefano, J., Lichtenstadt, A., Maggiora, A., Magnon, Makke, Nour, G., Mallot, A., Mann, C., Marchand, Martin, Anna, J., Marzec, F., Massmann, T., Matsuda, W., Meyer, T., Michigami, Mikhailov, Y. u., M., Moinester, A., Morreale, A., Mutter, A., Nagaytsev, T., Nagel, F., Nerling, S., Neubert, D., Neyret, V., Nikolaenko, W. D., Nowak, A., Nune, A., Olshevsky, M., Ostrick, A., Padee, R., Panknin, D., Panzieri, B., Parsamyan, S., Paul, E., Perevalova, Pesaro, Giulia, D., Peshekhonov, G., Piragino, S., Platchkov, J., Pochodzalla, J., Polak, V., Polyakov, G., Pontecorvo, J., Pretz, C., Quintan, J. F., Rajotte, S., Ramo, V., Rapatsky, G., Reicherz, A., Richter, Rocco, Elena, E., Rondio, N., Rossiyskaya, D., Ryabchikov, V., Samoylenko, A., Sandacz, M., Sapozhnikov, S., Sarkar, I., Savin, Sbrizzai, Giulio, Schiavon, Paolo, C., Schill, T., Schlüter, L., Schmitt, K., Schönning, S., Schopferer, W., Schröder, O., Shevchenko, H. W., Siebert, L., Silva, L., Sinha, A., Sissakian, M., Slunecka, G., Smirnov, S., Sosio, Sozzi, Federica, A., Srnka, M., Stolarski, M., Sulc, R., Sulej, P., Sznajder, S., Takekawa, J., Ter Wolbeek, Tessaro, Susanna, F., Tessarotto, A., Teufel, L., Tkatchev, S., Uhl, I., Uman, M., Vandenbroucke, M., Viriu, N., Vlassov, R., Windmolder, W., Wiślicki, H., Wollny, K., Zaremba, M., Zavertyaev, E., Zemlyanichkina, M., Ziembicki, N., Zhuravlev, and A., Zvyagin
Subjects: chiral-dynamics, cross-section, PACS 25.80.Dj, chiral-dynamic, COMPASS, PACS 12.39.Fe, PACS 13.60.Le
Abstract: The COMPASS Collaboration at CERN has investigated the π- γ → π- π- π+ reaction at center-of-momentum energy below five pion masses, sqrt[s]5m(π), embedded in the Primakoff reaction of 190 GeV pions impinging on a lead target. Exchange of quasireal photons is selected by isolating the sharp Coulomb peak observed at smallest momentum transfers, t'0.001 GeV2/c2. Using partial-wave analysis techniques, the scattering intensity of Coulomb production described in terms of chiral dynamics and its dependence on the 3π-invariant mass m(3π)=sqrt[s] were extracted. The absolute cross section was determined in seven bins of sqrt[s] with an overall precision of 20%. At leading order, the result is found to be in good agreement with the prediction of chiral perturbation theory over the whole energy range investigated.
Published: 2012

28. Exclusive rho^0 muoproduction on transversely polarised protons and deuterons

Author: Adolph, C., Alekseev, M. G., Alexakhin, V. Yu., Alexandrov, Yu., Alexeev, G. D., Amoroso, A., Antonov, A. A., Austregesilo, A., Badełek, B., Balestra, F., Barth, J., Baum, G., Bedfer, Y., Bernhard, J., Bertini, R., Bettinelli, M., Bicker, K., Bieling, J., Birsa, R., Bisplinghoff, J., Bordalo, P., Bradamante, F., Braun, C., Bravar, A., Bressan, A., Büchele, M., Burtin, E., Capozza, L., Chiosso, M., Chung, S. U., Cicuttin, A., Crespo, M. L., Torre, S. Dalla, Das, S., Dasgupta, S. S., Dasgupta, S., Denisov, O. Yu., Dhara, L., Donskov, S. V., Doshita, N., Duic, V., Dünnweber, W., Dziewiecki, M., Efremov, A., Elia, C., Eversheim, P. D., Eyrich, W., Faessler, M., Ferrero, A., Filin, A., Finger, M., Finger Jr, M., Fischer, H., Franco, C., von Hohenesche, N. du Fresne, Friedrich, J. M., Frolov, V., Garfagnini, R., Gautheron, F., Gavrichtchouk, O. P., Gerassimov, S., Geyer, R., Giorgi, M., Gnesi, I., Gobbo, B., Goertz, S., Grabmüller, S., Grasso, A., Grube, B., Gushterski, R., Guskov, A., Guthörl, T., Haas, F., von Harrach, D., Heinsius, F. H., Herrmann, F., Heß, C., Hinterberger, F., Horikawa, N., Höppner, Ch., d'Hose, N., Ishimoto, S., Ivanov, O., Ivanshin, Yu., Iwata, T., Jahn, R., Jary, V., Jasinski, P., Jegou, G., Joosten, R., Kabuß, E., Kang, D., Ketzer, B., Khaustov, G. V., Khokhlov, Yu. A., Kisselev, Yu., Klein, F., Klimaszewski, K., Koblitz, S., Koivuniemi, J. H., Kolosov, V. N., Kondo, K., Königsmann, K., Konorov, I., Konstantinov, V. F., Korzenev, A., Kotzinian, A. M., Kouznetsov, O., Krämer, M., Kroumchtein, Z. V., Kunne, F., Kurek, K., Lauser, L., Lednev, A. A., Lehmann, A., Levorato, S., Lichtenstadt, J., Liska, T., Maggiora, A., Magnon, A., Makke, N., Mallot, G. K., Mann, A., Marchand, C., Martin, A., Marzec, J., Matsuda, T., Meshcheryakov, G., Meyer, W., Michigami, T., Mikhailov, Yu. V., Moinester, M. A., Morreale, A., Mutter, A., Nagaytsev, A., Nagel, T., Negrini, T., Nerling, F., Neubert, S., Neyret, D., Nikolaenko, V. I., Nowak, W. -D., Nunes, A. S., Olshevsky, A. G., Ostrick, M., Padee, A., Panknin, R., Panzieri, D., Parsamyan, B., Paul, S., Perevalova, E., Pesaro, G., Peshekhonov, D. V., Piragino, G., Platchkov, S., Pochodzalla, J., Polak, J., Polyakov, V. A., Pretz, J., Quaresma, M., Quintans, C., Rajotte, J. -F., Ramos, S., Rapatsky, V., Reicherz, G., Richter, A., Rocco, E., Rondio, E., Rossiyskaya, N. S., Ryabchikov, D. I., Samoylenko, V. D., Sandacz, A., Sapozhnikov, M. G., Sarkar, S., Savin, I. A., Sbrizzai, G., Schiavon, P., Schill, C., Schlüter, T., Schmidt, K., Schmitt, L., Schönning, K., Schopferer, S., Schott, M., Schröder, W., Shevchenko, O. Yu., Silva, L., Sinha, L., Sissakian, A. N., Slunecka, M., Smirnov, G. I., Sosio, S., Sozzi, F., Srnka, A., Steiger, L., Stolarski, M., Sulc, M., Sulej, R., Suzuki, H., Sznajder, P., Takekawa, S., Ter Wolbeek, J., Tessaro, S., Tessarotto, F., Tkatchev, L. G., Uhl, S., Uman, I., Vandenbroucke, M., Virius, M., Vlassov, N. V., Wang, L., Wilfert, M., Windmolders, R., Wiślicki, W., Wollny, H., Zaremba, K., Zavertyaev, M., Zemlyanichkina, E., Ziembicki, M., Zhuravlev, N., and Zvyagin, A.
Subjects: High Energy Physics - Experiment (hep-ex), POLARIZED TARGET, Nuclear Theory, FOS: Physical sciences, High Energy Physics::Experiment, COMPASS, polarized beam, Nuclear Experiment, Particle Physics - Experiment, High Energy Physics - Experiment
Abstract: The transverse target spin azimuthal asymmetry A_UT in hard exclusive production of rho^0 mesons was measured at COMPASS by scattering 160 GeV/c muons off transversely polarised protons and deuterons. The measured asymmetry is sensitive to the nucleon helicity-flip generalised parton distributions E^q, which are related to the orbital angular momentum of quarks in the nucleon. The Q^2, x_B and p_t^2 dependence of A_UT is presented in a wide kinematic range. Results for deuterons are obtained for the first time. The measured asymmetry is small in the whole kinematic range for both protons and deuterons, which is consistent with the theoretical interpretation that contributions from GPDs E^u and E^d approximately cancel., Comment: 20 pages, 9 figures and 4 tables, updated author list
Published: 2012

29. Double spin asymmetry in exclusive rho0 muoproduction at COMPASS

Author: Alekseev, M., Alexakhin, V. Y. U., Alexandrov, Y. U., Alexeev, G. D., Amoroso, A., Arbuzov, A., Badelek, B., Balestra, F., Ball, J., Barth, J., Baum, G., Bedfer, Y., Bernet, C., Bertini, R., Bettinelli, M., Birsa, R., Bisplinghoff, J., Bordalo, P., Bradamante, Franco, Bravar, A., Bressan, Andrea, Brona, G., Burtin, E., Bussa, M. P., Chapiro, A., Chiosso, M., Cicuttin, A., Colantoni, M., Costa, S., Crespo, M. L., DALLA TORRE, S., Dafni, T., Das, S., Dasgupta, S. S., DE MASSI, R., Dedek, N., Denisov, O. Y. U., Dhara, L., Diaz, V., Dinkelbach, A. M., Donskov, S. V., Dorofeev, V. A., Doshita, N., Duic, V., Dunnweber, W., Eversheim, P. D., Eyrich, W., Fabro, M., Faessler, M., Falaleev, V., Ferrero, A., Ferrero, L., Finger, M., Fischer, H., Franco, C., Franz, J., Friedrich, J. M., Frolov, V., Garfagnini, R., Gautheron, F., Gavrichtchouk, O. P., Gazda, R., Gerassimov, S., Geyer, R., Giorgi, Marcello, Gobbo, B., Goertz, S., Gorin, A. M., Grabmuller, S., Grajek, O. A., Grasso, A., Grube, B., Gushterski, R., Guskov, A., Haas, F., Hannappel, J., VON HARRACH, D., Hasegawa, T., Heckmann, J., Hedicke, S., Heinsius, F. H., Hermann, R., Hess, C., Hinterberger, F., VON HODENBERG, M., Horikawa, N., Horikawa, S., D'Hose, N., Ilgner, C., Ioukaev, A. I., Ishimoto, S., Ivanov, O., Ivanshin, Y. U., Iwata, T., Jahn, R., Janata, A., Jasinski, P., Joosten, R., Jouravlev, N. I., Kabuss, E., Kang, D., Ketzer, B., Khaustov, G. V., Khokhlov, Y. U. A., Kisselev, Y. U., Klein, F., Klimaszewski, K., Koblitz, S., Koivuniemi, J. H., Kolosov, V. N., Komissarov, E. V., Kondo, K., Konigsmann, K., Konorov, I., Konstantinov, V. F., Korentchenko, A. S., Korzenev, A., Kotzinian, A. M., Koutchinski, N. A., Kouznetsov, O., Kral, A., Kravchuk, N. P., Kroumchtein, Z. V., Kuhn, R., Kunne, F., Kurek, K., Ladygin, M. E., Lamanna, M., LE GOFF, J. M., Lednev, A. A., Lehmann, A., Lichtenstadt, J., Liska, T., Ludwig, I., Maggiora, A., Maggiora, M., Magnon, A., Mallot, G. K., Mann, A., Marchand, C., Marroncle, J., Martin, Anna, Marzec, J., Massmann, F., Matsuda, T., Maximov, A. N., Meyer, W., Mielech, A., Mikhailov, Y. U. V., Moinester, M. A., Mutter, A., Nagaytsev, A., Nagel, T., Nahle, O., Nassalski, J., Neliba, S., Nerling, F., Neubert, S., Neyret, D. P., Nikolenko, V. I., Nikolaev, K., Olshevsky, A. G., Ostrick, M., Padee, A., Pagano, P., Panebianco, S., Panknin, R., Panzieri, D., Paul, S., PAWLUKIEWICZ KAMINSKA, B., Peshekhonov, D. V., Peshekhonov, V. D., Piragino, G., Platchkov, S., Pochodzalla, J., Polak, J., Polyakov, V. A., Pretz, J., Procureur, S., Quintans, C., Rajotte, J. F., Ramos, S., Rapatsky, V., Reicherz, G., Richter, A., Robinet, F., Rocco, E., Rondio, E., Rozhdestvensky, A. M., Ryabchikov, D. I., Samoylenko, V. D., Sandacz, A., Santos, H., Sapozhnikov, M. G., Sarkar, S., Savin, I. A., Schiavon, Paolo, Schill, C., Schmitt, L., Schonmeier, P., Schroder, W., Shevchenko, O. Y. U., Siebert, H. W., Silva, L., Sinha, L., Sissakian, A. N., Slunecka, M., Smirnov, G. I., Sosio, S., Sozzi, F., Srnka, A., Stinzing, F., Stolarski, M., Sugonyaev, V. P., Sulc, M., Sulej, R., Tchalishev, V. V., Tessaro, S., Tessarotto, F., Teufel, A., Tkatchev, L. G., Venugopal, G., Virius, M., Vlassov, N. V., Vossen, A., Webb, R., Weise, E., Weitzel, Q., Windmolders, R., Wirth, S., Wislicki, W., Zaremba, K., Zavertyaev, M., Zemlyanichkina, E., Zhao, J., Ziegler, R., Zvyagin, A., M., Alekseev, Alexakhin, V. Y. U., Alexandrov, Y. U., G. D., Alexeev, A., Amoroso, A., Arbuzov, B., Badelek, F., Balestra, J., Ball, J., Barth, G., Baum, Y., Bedfer, C., Bernet, R., Bertini, M., Bettinelli, R., Birsa, J., Bisplinghoff, P., Bordalo, Bradamante, Franco, A., Bravar, Bressan, Andrea, G., Brona, E., Burtin, M. P., Bussa, A., Chapiro, M., Chiosso, A., Cicuttin, M., Colantoni, S., Costa, M. L., Crespo, S., DALLA TORRE, T., Dafni, S., Da, S. S., Dasgupta, R., DE MASSI, N., Dedek, Denisov, O. Y. U., L., Dhara, V., Diaz, A. M., Dinkelbach, S. V., Donskov, V. A., Dorofeev, N., Doshita, V., Duic, W., Dunnweber, P. D., Eversheim, W., Eyrich, M., Fabro, M., Faessler, V., Falaleev, A., Ferrero, L., Ferrero, M., Finger, Jr, H., Fischer, C., Franco, J., Franz, J. M., Friedrich, V., Frolov, R., Garfagnini, F., Gautheron, O. P., Gavrichtchouk, R., Gazda, S., Gerassimov, R., Geyer, Giorgi, Marcello, B., Gobbo, S., Goertz, A. M., Gorin, S., Grabmuller, O. A., Grajek, A., Grasso, B., Grube, R., Gushterski, A., Guskov, F., Haa, J., Hannappel, D., VON HARRACH, T., Hasegawa, J., Heckmann, S., Hedicke, F. H., Heinsiu, R., Hermann, C., He, F., Hinterberger, M., VON HODENBERG, N., Horikawa, S., Horikawa, N., D'Hose, C., Ilgner, A. I., Ioukaev, S., Ishimoto, O., Ivanov, Ivanshin, Y. U., T., Iwata, R., Jahn, A., Janata, P., Jasinski, R., Joosten, N. I., Jouravlev, E., Kabu, D., Kang, B., Ketzer, G. V., Khaustov, Khokhlov, Y. U. A., Kisselev, Y. U., F., Klein, K., Klimaszewski, S., Koblitz, J. H., Koivuniemi, V. N., Kolosov, E. V., Komissarov, K., Kondo, K., Konigsmann, I., Konorov, V. F., Konstantinov, A. S., Korentchenko, A., Korzenev, A. M., Kotzinian, N. A., Koutchinski, O., Kouznetsov, A., Kral, N. P., Kravchuk, Z. V., Kroumchtein, R., Kuhn, F., Kunne, K., Kurek, M. E., Ladygin, M., Lamanna, J. M., LE GOFF, A. A., Lednev, A., Lehmann, J., Lichtenstadt, T., Liska, I., Ludwig, A., Maggiora, M., Maggiora, A., Magnon, G. K., Mallot, A., Mann, C., Marchand, J., Marroncle, Martin, Anna, J., Marzec, F., Massmann, T., Matsuda, A. N., Maximov, W., Meyer, A., Mielech, Mikhailov, Y. U. V., M. A., Moinester, A., Mutter, A., Nagaytsev, T., Nagel, O., Nahle, J., Nassalski, S., Neliba, F., Nerling, S., Neubert, D. P., Neyret, V. I., Nikolenko, K., Nikolaev, A. G., Olshevsky, M., Ostrick, A., Padee, P., Pagano, S., Panebianco, R., Panknin, D., Panzieri, S., Paul, B., PAWLUKIEWICZ KAMINSKA, D. V., Peshekhonov, V. D., Peshekhonov, G., Piragino, S., Platchkov, J., Pochodzalla, J., Polak, V. A., Polyakov, J., Pretz, S., Procureur, C., Quintan, J. F., Rajotte, S., Ramo, V., Rapatsky, G., Reicherz, A., Richter, F., Robinet, E., Rocco, E., Rondio, A. M., Rozhdestvensky, D. I., Ryabchikov, V. D., Samoylenko, A., Sandacz, H., Santo, M. G., Sapozhnikov, S., Sarkar, I. A., Savin, Schiavon, Paolo, C., Schill, L., Schmitt, P., Schonmeier, W., Schroder, Shevchenko, O. Y. U., H. W., Siebert, L., Silva, L., Sinha, A. N., Sissakian, M., Slunecka, G. I., Smirnov, S., Sosio, F., Sozzi, A., Srnka, F., Stinzing, M., Stolarski, V. P., Sugonyaev, M., Sulc, R., Sulej, V. V., Tchalishev, S., Tessaro, F., Tessarotto, A., Teufel, L. G., Tkatchev, G., Venugopal, M., Viriu, N. V., Vlassov, A., Vossen, R., Webb, E., Weise, Q., Weitzel, R., Windmolder, S., Wirth, W., Wislicki, K., Zaremba, M., Zavertyaev, E., Zemlyanichkina, J., Zhao, R., Ziegler, and A., Zvyagin
Subjects: Physics, Particle physics, Physics and Astronomy (miscellaneous), Meson, 010308 nuclear & particles physics, media_common.quotation_subject, FOS: Physical sciences, 01 natural sciences, Asymmetry, High Energy Physics - Experiment, High Energy Physics - Experiment (hep-ex), Deuterium, Compass, 0103 physical sciences, High Energy Physics::Experiment, 010306 general physics, Engineering (miscellaneous), Particle Physics - Experiment, Spin-½, media_common
Abstract: The longitudinal double spin asymmetry A_1^rho for exclusive leptoproduction of rho^0 mesons, mu + N -> mu + N + rho, is studied using the COMPASS 2002 and 2003 data. The measured reaction is incoherent exclusive rho^0 production on polarised deuterons. The Q^2 and x dependence of A_1^rho is presented in a wide kinematical range: 3x10^-3 < Q^2 < 7 (GeV/c)^2 and 5x10^-5 < x < 0.05. The presented results are the first measurements of A_1^rho at small Q2 (Q2 < 0.1 (GeV/c)^2) and small x (x < 3x10^-3). The asymmetry is in general compatible with zero in the whole kinematical range., 6 Figures, 15 pages, version 2 with updated author list, technical latex problem fixed
Published: 2007

30. Exclusive ω meson muoproduction on transversely polarised protons

Author: Adolph, C., Agarwala, J., Aghasyan, M., Akhunzyanov, R., Alexeev, M. G., Alexeev, G. D., Amoroso, A., Andrieux, V., Anfimov, N. V., Anosov, V., Augustyniak, W., Austregesilo, A., Azevedo, C. D. R., Badelek, B., Balestra, F., Barth, J., Beck, R., Bedfer, Y., Bernhard, J., Bicker, K., Bielert, E. R., Birsa, R., Bisplinghoff, J., Bodlak, M., Boer, M., Bordalo, P., Bradamante, F., Braun, C., Bressan, A., Buechele, M., Chang, W. -C., Chatterjee, C., Chiosso, M., Choi, I., Chung, S. -U., Cicuttin, A., Crespo, M. L., Curiel, Q., Dalla Torre, S., Dasgupta, S. S., Dasgupta, S., Denisov, O. Yu., Dhara, L., Donskov, S. V., Doshita, N., Duic, V., Duennweber, W., Dziewiecki, M., Efremov, A., Eversheim, P. D., Eyrich, W., Faessler, M., Ferrero, A., Finger, M., Fischer, H., Franco, C., Du Fresne Von Hohenesche, Nicolas, Friedrich, J. M., Frolov, V., Fuchey, E., Gautheron, F., Gavrichtchouk, O. P., Gerassimov, S., Giordano, F., Gnesi, I., Gorzellik, M., Grabmueller, S., Grasso, A., Grosse-Perdekamp, M., Grube, B., Grussenmeyer, T., Guskov, A., Haas, F., Hahne, D., Von Harrach, D., Hashimoto, R., Heinsius, F. H., Heitz, R., Herrmann, F., Hinterberger, F., Horikawa, N., D'Hosev, N., Hsieh, C. -Y., Huber, S., Ishimoto, S., Ivanov, A., Ivanshin, Yu., Iwata, T., Jahn, R., Jary, V., Joosten, R., Joerg, P., Kabuss, E., Ketzer, B., Khaustov, G. V., Khokhlov, Yu. A., Kisselev, Yu., Klein, F., Klimaszewski, K., Koivuniemi, J. H., Kolosov, V. N., Kondo, K., Koenigsmann, K., Konorov, I., Konstantinov, V. F., Kotzinian, A. M., Kouznetsov, O. M., Kraemer, M., Kremser, P., Krinner, F., Kroumchtein, Z. V., Kulinich, Y., Kunne, F., Kurek, K., Kurjata, R. P., Lednev, A. A., Lehmann, A., Levillain, M., Levorato, S., Lian, Y. -S., Lichtenstadt, J., Longo, R., Maggiora, A., Magnon, A., Makins, N., Makke, N., Mallot, G. K., Marchand, C., Marianski, B., Martin, A., Marzec, J., Matousek, J., Matsuda, H., Matsuda, T., Meshcheryakov, G. V., Meyer, M., Meyer, W., Michigami, T., Mikhailov, Yu. V., Mikhasenko, M., Mitrofanov, E., Mitrofanov, N., Miyachi, Y., Montuenga, P., Nagaytsev, A., Nerling, F., Neyret, D., Nikolaenko, V. I., Novy, J., Nowak, W. -D., Nukazuka, G., Nunes, A. S., Olshevsky, A. G., Orlov, I., Ostrick, M., Panzieri, D., Parsamyan, B., Paul, S., Peng, J. -C., Pereira, F., Pesek, M., Peshekhonov, D. V., Pierre, N., Platchkov, S., Pochodzalla, J., Polyakov, V. A., Pretz, Jörg Johannes, Quaresma, M., Quintans, C., Ramos, S., Regali, C., Reicherz, G., Riedl, C., Roskot, M., Ryabchikov, D. I., Rybnikov, A., Rychter, A., Salac, R., Samoylenko, V. D., Sandacz, A., Santos, C., Sarkar, S., Savin, I. A., Sawada, T., Sbrizzai, G., Schiavon, P., Schmidt, K., Schmieden, H., Schoenning, K., Schopferer, S., Seder, E., Selyunin, A., Shevchenko, O. Yu., Silva, L., Sinha, L., Sirtl, S., Slunecka, M., Smolik, J., Sozzi, F., Srnka, A., Steffen, D., Stolarski, M., Sulc, M., Suzuki, H., Szabelski, A., Szameitat, T., Sznajder, P., Takekawa, S., Tasevsky, M., Tessaro, S., Tessarotto, F., Thibaud, F., Tosello, F., Tskhay, V., Uhl, S., Veloso, J., Virius, M., Vondra, J., Wallner, S., Weisrock, T., Wilfert, M., Ter Wolbeek, J., Zaremba, K., Zavada, P., Zavertyaev, M., Zemlyanichkina, E., Ziembicki, M., and Zink, A.
Subjects: form factor: transition, angular distribution: asymmetry, generalized parton distribution, 160 GeV/c, polarized target: transverse, quark: angular momentum, photon, momentum transfer, muon nucleus: nuclear reaction, parton: distribution function, omega(783): exclusive production, muon+ p: scattering, 7. Clean energy, COMPASS, scaling: Bjorken, nucleon: helicity, omega(783): leptoproduction, spin: asymmetry, omega(783): transverse momentum, transversity, experimental results
Abstract: Nuclear physics / B 915, 454-475 (2017). doi:10.1016/j.nuclphysb.2016.12.015, Published by North-Holland Publ. Co., Amsterdam

31. Spin Density Matrix Elements in Exclusive $\omega$ Meson Muoproduction $^*$

Author: Johannes Bernhard, Ch. Dreisbach, A. Guskov, W.-D. Nowak, C. Quintans, G. Nukazuka, Marcin Stolarski, D. D'Ago, C. Naim, F. Tosello, Pietro Faccioli, P.D. Eversheim, H. Suzuki, C.D.R. Azevedo, A. Srnka, G.V. Meshcheryakov, Yu. V. Mikhailov, Andrea Ferrero, G. D. Alexeev, Franco Bradamante, M. Faessler, P. Jörg, Arseniy Rybnikov, B. Badelek, Norihiro Doshita, N. d'Hose, B.M. Veit, O.P. Gavrichtchouk, Martin Bodlak, B. Ketzer, S. Gerassimov, N. Horikawa, Jen-Chieh Peng, J. Smolik, S.S. Dasgupta, R. Heitz, L. Sinha, O. Subrt, K. Zaremba, H. Schmieden, E. M. Kabuß, S.A. Mamon, T. Matsuda, A. Townsend, J.M. Friedrich, V.A. Polyakov, Y. Miyachi, A. Gridin, D.I. Ryabchikov, S. Sarkar, A.B. Ivanov, V.E. Burtsev, S. Huber, N. Mitrofanov, S. Tessaro, Yakov Petrovich Kulinich, G. Sbrizzai, Alexandr Selyunin, Yuxiang Zhao, A. Vauth, M. Wagner, Alessandro Bressan, D. von Harrach, F. Krinner, E. Zemlyanichkina, M.G. Alexeev, A. Amoroso, Yu.A. Khokhlov, J. Pochodzalla, S. Uhl, O.Yu. Denisov, J. Giarra, D. Neyret, Andres Cicuttin, A. Moretti, V.D. Samoylenko, C. Regali, I.A. Savin, Nour Makke, A. Sandacz, J. Nový, M. Chiosso, Naomi C R Makins, Yu. Kisselev, T. Iwata, R. Joosten, G. Reicherz, A. Maltsev, W. C. Chang, F. Gautheron, A. Vidon, B. Marianski, J. Barth, J.F.C.A. Veloso, A. Rychter, M. Finger, Bakur Parsamyan, J.H. Koivuniemi, K. Kurek, V.N. Kolosov, C. Chatterjee, M. Gorzellik, M. Ostrick, I. Denisenko, S. Dalla Torre, Gerhard K. Mallot, Y.-S. Lian, R. Beck, A. Kerbizi, A. Magnon, M. Quaresma, M. Slunečka, M. Pešková, M. Meyer, M. V. Zavertyaev, O.M. Kouznetsov, Anne-Laure Martin, C.-Y. Hsieh, V. Frolov, H. Pekeler, M. Virius, A.G. Chumakov, Miroslav Sulc, Antonin Kveton, D.V. Peshekhonov, W. Augustyniak, Aram Kotzinian, S. Platchkov, P. Zavada, M. Ziembicki, C. Franco, F. Tessarotto, Soumen Paul, R.P. Kurjata, B.I. Vasilishin, Jan Tomsa, M. Grosse Perdekamp, P.M.M. Correia, I. Konorov, P. Sznajder, J. Pretz, A. Antoshkin, M. Jandek, V.F. Konstantinov, W. Meyer, Maria Liz Crespo, F. Kaspar, D. Steffen, K. Lavickova, A. Grasso, V. Andrieux, A.V. Efremov, I. Gnesi, S. Wallner, Y. Bedfer, R. Longo, Kamil Augsten, V. Jary, S. Ishimoto, H. Fischer, A. Thiel, Valery E. Lyubovitskij, A.G. Olshevsky, G.V. Khaustov, A. Maggiora, S. Levorato, S. Dasgupta, Frank Klein, Jan Matousek, Mikhail Mikhasenko, S. V. Donskov, M. Pešek, F. Kunne, Markus Ball, R.R. Dusaev, V. Tskhay, A.S. Nunes, D. Panzieri, Janusz Marzec, E. Mitrofanov, T. Szameitat, A. Koval, J. Lichtenstadt, B. Ventura, B. Grube, M. Zemko, S.-U. Chung, François Herrmann, P.-J. Lin, K. Kondo Horikawa, G. Mattson, V. Anosov, Z. Kral, J. Berenguer Antequera, W. Dünnweber, A. Nagaytsev, F. Balestra, N. Pierre, T. Rudnicki, C. Riedl, Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, COMPASS, Alexeev, G. D., Alexeev, M. G., Amoroso, A., Andrieux, V., Anosov, V., Antoshkin, A., Augsten, K., Augustyniak, W., Azevedo, C. D. R., Badełek, B., Balestra, F., Ball, M., Barth, J., Beck, R., Bedfer, Y., Antequera, J. Berenguer, Bernhard, J., Bodlak, M., Bradamante, F., Bressan, A., Burtsev, V. E., Chang, W. -C., Chatterjee, C., Chiosso, M., Chumakov, A. G., Chung, S. -U., Cicuttin, A., Correia, P. M. M., Crespo, M. L., D’Ago, D., Torre, S. Dalla, Dasgupta, S. S., Dasgupta, S., Denisenko, I., Denisov, O. Yu., Donskov, S. V., Doshita, N., Dreisbach, Ch., Dünnweber, W., Dusaev, R. R., Efremov, A., Eversheim, P. D., Faccioli, P., Faessler, M., Ferrero, A., Finger, M., Fischer, H., Franco, C., Friedrich, J. M., Frolov, V., Gautheron, F., Gavrichtchouk, O. P., Gerassimov, S., Giarra, J., Gnesi, I., Gorzellik, M., Grasso, A., Gridin, A., Perdekamp, M. Grosse, Grube, B., Guskov, A., von Harrach, D., Heitz, R., Herrmann, F., Horikawa, N., D’Hose, N., Hsieh, C. -Y., Huber, S., Ishimoto, S., Ivanov, A., Iwata, T., Jandek, M., Jary, V., Jörg, P., Joosten, R., Kabuß, E., Kaspar, F., Kerbizi, A., Ketzer, B., Khaustov, G. V., Khokhlov, Yu. A., Kisselev, Yu., Klein, F., Koivuniemi, J. H., Kolosov, V. N., Horikawa, K. Kondo, Konorov, I., Konstantinov, V. F., Kotzinian, A. M., Kouznetsov, O. M., Koval, A., Kral, Z., Krinner, F., Kulinich, Y., Kunne, F., Kurek, K., Kurjata, R. P., Kveton, A., Lavickova, K., Levorato, S., Lian, Y. -S., Lichtenstadt, J., Lin, P. -J., Longo, R., Lyubovitskij, V. E., Maggiora, A., Magnon, A., Makins, N., Makke, N., Mallot, G. K., Maltsev, A., Mamon, S. A., Marianski, B., Martin, A., Marzec, J., Matoušek, J., Matsuda, T., Mattson, G., Meshcheryakov, G. V., Meyer, M., Meyer, W., Mikhailov, Yu. V., Mikhasenko, M., Mitrofanov, E., Mitrofanov, N., Miyachi, Y., Moretti, A., Nagaytsev, A., Naim, C., Neyret, D., Nový, J., Nowak, W. -D., Nukazuka, G., Nunes, A. S., Olshevsky, A. G., Ostrick, M., Panzieri, D., Parsamyan, B., Paul, S., Pekeler, H., Peng, J. -C., Pešek, M., Peshekhonov, D. V., Pešková, M., Pierre, N., Platchkov, S., Pochodzalla, J., Polyakov, V. A., Pretz, J., Quaresma, M., Quintans, C., Regali, C., Reicherz, G., Riedl, C., Rudnicki, T., Ryabchikov, D. I., Rybnikov, A., Rychter, A., Samoylenko, V. D., Sandacz, A., Sarkar, S., Savin, I. A., Sbrizzai, G., Schmieden, H., Selyunin, A., Sinha, L., Slunecka, M., Smolik, J., Srnka, A., Steffen, D., Stolarski, M., Subrt, O., Sulc, M., Suzuki, H., Szameitat, T., Sznajder, P., Tessaro, S., Tessarotto, F., Thiel, A., Tomsa, J., Tosello, F., Townsend, A., Tskhay, V., Uhl, S., Vasilishin, B. I., Vauth, A., Veit, B. M., Veloso, J., Ventura, B., Vidon, A., Virius, M., Wagner, M., Wallner, S., Zaremba, K., Zavada, P., Zavertyaev, M., Zemko, M., Zemlyanichkina, E., Zhao, Y., and Ziembicki, M.
Subjects: virtual [photon], generalized parton distribution, Physics and Astronomy (miscellaneous), Hadron, parton: distribution function, Virtual particle, Parton, SDME, COMPASS, 01 natural sciences, Omega, High Energy Physics - Experiment, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], spin: density matrix, Nuclear Experiment, Quantum chromodynamics, Physics, density matrix [spin], vector meson, helicity: conservation law, Helicity, kinematics, omega(783): production, Production (computer science), distribution function [parton], Particle Physics - Experiment, exclusive reaction, Particle physics, liquid: target [hydrogen], Meson, polarization: longitudinal, lcsh:Astrophysics, +muon+p+omega%28783%29%22">muon p --> muon p omega(783), transverse momentum, meson, hydrogen: liquid: target, lcsh:QB460-466, 0103 physical sciences, polarization: transverse, ddc:530, lcsh:Nuclear and particle physics. Atomic energy. Radioactivity, 010306 general physics, Engineering (miscellaneous), DIS, background, muon: beam, 010308 nuclear & particles physics, hep-ex, High Energy Physics::Phenomenology, conservation law [helicity], Automatic Keywords, lcsh:QC770-798, High Energy Physics::Experiment, experimental results, photon: virtual
Abstract: We report on a measurement of Spin Density Matrix Elements (SDMEs) in hard exclusive $\omega$ meson muoproduction on the proton at COMPASS using 160 GeV/$c$ polarised $ \mu ^{+}$ and $ \mu ^{-}$ beams impinging on a liquid hydrogen target. The measurement covers the range 5.0 GeV/$c^2$ $< W, Comment: 31 pages, 12 figures, 1 appendix
Published: 2020

32. Measurement of the cross section for hard exclusive π0 muoproduction on the proton

Author: C. Quintans, I.A. Savin, I. Konorov, M. Quaresma, A. Vidon, B. Marianski, Bakur Parsamyan, F. Tosello, M. Jandek, Anne-Laure Martin, Andres Cicuttin, A. Moretti, Valery E. Lyubovitskij, Andrea Ferrero, Norihiro Doshita, N. d'Hose, V.D. Samoylenko, W.-D. Nowak, H. Schmieden, J.M. Friedrich, V.F. Konstantinov, S. Huber, E. Zemlyanichkina, A. Gridin, C. Naim, F. Gautheron, M. A. Faessler, L. Dhara, B. Badelek, A. Maggiora, G. Nukazuka, B. Ketzer, Jen-Chieh Peng, B.M. Veit, A. Rychter, S. Wallner, S. Ishimoto, H. Fischer, V.N. Kolosov, S. Dalla Torre, R.P. Kurjata, S. V. Donskov, M. Pešek, A. Magnon, S.S. Dasgupta, S. Ramos, D.V. Peshekhonov, K. Zaremba, V.A. Polyakov, G.V. Meshcheryakov, Yu. V. Mikhailov, Adam Szabelski, A.G. Olshevsky, G. Sbrizzai, A.S. Nunes, S. Gerassimov, D. Panzieri, Janusz Marzec, N. Horikawa, D.I. Ryabchikov, A. Srnka, Z. Kral, G. D. Alexeev, W. Dünnweber, A. Amoroso, R. Longo, C.-Y. Hsieh, S. Platchkov, P. Zavada, G. Hamar, N. du Fresne von Hohenesche, Yu. Kisselev, A. Kveton, M. Stolarski, J. Lichtenstadt, M. Büchele, W. Augustyniak, Maria Liz Crespo, R. Heitz, V. Frolov, Soumen Paul, M. Chiosso, I. Gnesi, J.H. Koivuniemi, K. Juraskova, M. V. Zavertyaev, M. Ostrick, A. Nagaytsev, F. Balestra, V. Jary, M. Pešková, O.Yu. Denisov, T. Szameitat, N. Pierre, Miroslav Sulc, P. Sznajder, S. Tessaro, D. Hahne, M. Wilfert, D. Neyret, Jan Tomsa, W. Meyer, J.F.C.A. Veloso, O.P. Gavrichtchouk, Martin Bodlak, D. Steffen, L. Sinha, R.R. Dusaev, A.V. Efremov, E. Mitrofanov, Mikhail Mikhasenko, V. Tskhay, Alexandr Selyunin, T. Matsuda, F. Tessarotto, Laura Gonzalez Silva, K. Kurek, M. Wagner, Nour Makke, A. Thiel, W. C. Chang, Yakov Petrovich Kulinich, R. Beck, A. Kerbizi, M. Krämer, F. Krinner, M. Grosse Perdekamp, O.M. Kouznetsov, Andrew Ivanov, C. Riedl, S. Sarkar, B. Grube, M.G. Alexeev, Yu.A. Khokhlov, Franco Bradamante, A. Grasso, S. Uhl, P. Bordalo, Alessandro Bressan, D. von Harrach, J. Giarra, Johannes Bernhard, Ch. Dreisbach, A. Guskov, A. Antoshkin, V. Anosov, Frank Klein, C. Regali, Arseniy Rybnikov, Kamil Augsten, Aram Kotzinian, S.A. Mamon, Markus Ball, Y.-S. Lian, M. Meyer, A.G. Chumakov, F. Kunne, K. Kondo Horikawa, B.I. Vasilishin, Z.V. Kroumchtein, F. Kaspar, J. Pretz, J. Pochodzalla, P. Jörg, S. Levorato, V.E. Burtsev, N. Mitrofanov, Naomi C R Makins, M. Finger, V. Andrieux, Y. Bedfer, C. Chatterjee, M. Virius, J. Smolik, O. Subrt, Y. Miyachi, Yuxiang Zhao, A. Sandacz, C. Franco, S. Dasgupta, F. Pereira, Nikolay Anfimov, R. Joosten, J. Barth, Gerhard K. Mallot, E. Fuchey, Jan Matousek, G. Reicherz, M. Ziembicki, M. Slunecka, J. Nový, S.-U. Chung, François Herrmann, P.-J. Lin, G.V. Khaustov, P.D. Eversheim, H. Suzuki, C.D.R. Azevedo, A. Vauth, T. Iwata, M. Gorzellik, E. M. Kabuß, Alexeev, M. G., Alexeev, G. D., Amoroso, A., Andrieux, V., Anfimov, N. V., Anosov, V., Antoshkin, A., Augsten, K., Augustyniak, W., Azevedo, C. D. R., Badelek, B., Balestra, F., Ball, M., Barth, J., Beck, R., Bedfer, Y., Bernhard, J., Bodlak, M., Bordalo, P., Bradamante, F., Bressan, A., Buchele, M., Burtsev, V. E., Chang, W. -C., Chatterjee, C., Chiosso, M., Chumakov, A. G., Chung, S. -U., Cicuttin, A., Crespo, M. L., Dalla Torre, S., Dasgupta, S. S., Dasgupta, S., Denisov, O. Y., Dhara, L., Donskov, S. V., Doshita, N., Dreisbach, C., Dunnweber, W., Dusaev, R. R., Efremov, A., Eversheim, P. D., Faessler, M., Ferrero, A., Finger, M., Fischer, H., Franco, C., du Fresne von Hohenesche, N., Friedrich, J. M., Frolov, V., Fuchey, E., Gautheron, F., Gavrichtchouk, O. P., Gerassimov, S., Giarra, J., Gnesi, I., Gorzellik, M., Grasso, A., Gridin, A., Grosse Perdekamp, M., Grube, B., Guskov, A., Hahne, D., Hamar, G., von Harrach, D., Heitz, R., Herrmann, F., Horikawa, N., D'Hose, N., Hsieh, C. -Y., Huber, S., Ishimoto, S., Ivanov, A., Iwata, T., Jandek, M., Jary, V., Joosten, R., Jorg, P., Juraskova, K., Kabuss, E., Kaspar, F., Kerbizi, A., Ketzer, B., Khaustov, G. V., Khokhlov, Y. A., Kisselev, Y., Klein, F., Koivuniemi, J. H., Kolosov, V. N., Kondo Horikawa, K., Konorov, I., Konstantinov, V. F., Kotzinian, A. M., Kouznetsov, O. M., Kral, Z., Kramer, M., Krinner, F., Kroumchtein, Z. V., Kulinich, Y., Kunne, F., Kurek, K., Kurjata, R. P., Kveton, A., Levorato, S., Lian, Y. -S., Lichtenstadt, J., Lin, P. -J., Longo, R., Lyubovitskij, V. E., Maggiora, A., Magnon, A., Makins, N., Makke, N., Mallot, G. K., Mamon, S. A., Marianski, B., Martin, A., Marzec, J., Matousek, J., Matsuda, T., Meshcheryakov, G. V., Meyer, M., Meyer, W., Mikhailov, Y. V., Mikhasenko, M., Mitrofanov, E., Mitrofanov, N., Miyachi, Y., Moretti, A., Naim, C., Nagaytsev, A., Neyret, D., Novy, J., Nowak, W. -D., Nukazuka, G., Nunes, A. S., Olshevsky, A. G., Ostrick, M., Panzieri, D., Parsamyan, B., Paul, S., Peng, J. -C., Pereira, F., Pesek, M., Peshekhonov, D. V., Peskova, M., Pierre, N., Platchkov, S., Pochodzalla, J., Polyakov, V. A., Pretz, J., Quaresma, M., Quintans, C., Ramos, S., Regali, C., Reicherz, G., Riedl, C., Ryabchikov, D. I., Rybnikov, A., Rychter, A., Samoylenko, V. D., Sandacz, A., Sarkar, S., Savin, I. A., Sbrizzai, G., Schmieden, H., Selyunin, A., Silva, L., Sinha, L., Slunecka, M., Smolik, J., Srnka, A., Steffen, D., Stolarski, M., Subrt, O., Sulc, M., Suzuki, H., Szabelski, A., Szameitat, T., Sznajder, P., Tessaro, S., Tessarotto, F., Thiel, A., Tomsa, J., Tosello, F., Tskhay, V., Uhl, S., Vasilishin, B. I., Vauth, A., Veit, B. M., Veloso, J., Vidon, A., Virius, M., Wagner, M., Wallner, S., Wilfert, M., Zaremba, K., Zavada, P., Zavertyaev, M., Zemlyanichkina, E., Zhao, Y., Ziembicki, M., Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, and COMPASS
Subjects: Quantum chromodynamics, Muoproduction, Hard exclusive meson production, Generalised Parton Distributions, COMPASS, Photon, generalized parton distribution, Proton, Parton, measured [cross section], 01 natural sciences, Generalised Parton Distribution, Photon polarization, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], Nuclear Experiment, Physics, Range (particle radiation), Large Hadron Collider, lcsh:QC1-999, ddc, angular dependence, beam [muon], polarization [photon], Nuclear and High Energy Physics, exclusive reaction, liquid: target [hydrogen], transverse [polarization], polarization: longitudinal, interference, Context (language use), leptoproduction [pi0], Nuclear physics, pi0: leptoproduction, hydrogen: liquid: target, 0103 physical sciences, polarization: transverse, ddc:530, 010306 general physics, longitudinal [polarization], 010308 nuclear & particles physics, muon: beam, cross section: measured, photon: polarization, High Energy Physics::Experiment, lcsh:Physics, experimental results
Abstract: Physics letters / B B805, 135454 (2020). doi:10.1016/j.physletb.2020.135454, Published by North-Holland Publ., Amsterdam
Published: 2020

33. K− over K+ multiplicity ratio for kaons produced in DIS with a large fraction of the virtual-photon energy

Author: S. Gerassimov, N. Horikawa, A. Srnka, A.G. Olshevsky, A. Rychter, F. Tosello, S. Tessaro, D. Hahne, R. Longo, M. Wilfert, V.N. Kolosov, L. Capozza, K. Kondo, F. Krinner, Yu.A. Khokhlov, Y.-S. Lian, C. Quintans, Alexandr Selyunin, Andrea Ferrero, I. Konorov, Y. Bedfer, K. Zaremba, C. Regali, C. Chatterjee, T. Sawada, Norihiro Doshita, V.A. Polyakov, Nour Makke, W. C. Chang, N. d'Hose, F. Kunne, Valery E. Lyubovitskij, C. Franco, R.R. Dusaev, V. Tskhay, Z.V. Kroumchtein, M. Chiosso, G. Sbrizzai, M. Quaresma, J. Barth, J. Smolik, E. Seder, J.F.C.A. Veloso, S.A. Mamon, O. Subrt, A. Amoroso, C.-Y. Hsieh, L. Dhara, B. Badełek, M. Ziembicki, Franco Bradamante, F. Pereira, N. du Fresne von Hohenesche, O.M. Kouznetsov, M. Stolarski, T. Szameitat, M. Grosse Perdekamp, B.M. Veit, A. Grasso, A. Gridin, A. Vidon, B. Marianski, Bakur Parsamyan, W. Augustyniak, S. Ramos, D.V. Peshekhonov, G. Pesaro, S. Platchkov, P. Zavada, Maria Liz Crespo, Miroslav Sulc, A. Kveton, Y. Miyachi, A.A. Lednev, P. Schiavon, M. A. Faessler, G.V. Khaustov, V. Frolov, B. Ketzer, Soumen Paul, R. Birsa, Jen-Chieh Peng, J. Lichtenstadt, P. Sznajder, J. Pochodzalla, V. Jary, Anne-Laure Martin, P. Jörg, S.S. Dasgupta, I. Gnesi, H. Schmieden, D. Steffen, Andrew Ivanov, S. Sarkar, Yu. Kisselev, O.P. Gavrichtchouk, Martin Bodlak, J.M. Friedrich, A. Sandacz, A. Vauth, H. Matsuda, R. Salac, M. Ostrick, S. Levorato, L. Sinha, T. Matsuda, D. Neyret, S. Dasgupta, A. Austregesilo, P. Bordalo, R. Akhunzyanov, Laura Silva, V.F. Konstantinov, Yakov Petrovich Kulinich, E.R. Bielert, D.I. Ryabchikov, A. Thiel, Q. Curiel, V.E. Burtsev, N. Mitrofanov, S. Huber, S. Wallner, E.A. Levchenko, S. Ishimoto, D. von Harrach, H. Fischer, E. M. Kabuß, E. Zemlyanichkina, Naomi C R Makins, G. D. Alexeev, R.P. Kurjata, Jan Tomsa, M. V. Zavertyaev, W. Dünnweber, K. Bicker, I.A. Savin, C. Marchand, M. Büchele, M.G. Alexeev, M. Krämer, S. Uhl, M. Finger, G. Hamar, J. Giarra, A.V. Efremov, Ilya Kuznetsov, J.H. Koivuniemi, Michal Dziewiecki, Andres Cicuttin, A. Moretti, I. Orlov, V.D. Samoylenko, Jan Matousek, G. Reicherz, Nikolay Anfimov, M. Pešková, M. Gorzellik, R. Heitz, M. Virius, J. Nový, R. Joosten, O.Yu. Denisov, Z. Kral, S. Dalla Torre, A. Antoshkin, P.D. Eversheim, F. Klein, Kamil Augsten, S.-U. Chung, G.V. Meshcheryakov, H. Suzuki, C.D.R. Azevedo, Yu. V. Mikhailov, R. Beck, A. Kerbizi, S. Sirtl, A. Maggiora, F. Tessarotto, Mikhail Mikhasenko, F. Nerling, François Herrmann, B. Grube, Johannes Bernhard, Ch. Dreisbach, S. V. Donskov, A. Guskov, M. Pešek, A.S. Nunes, Andrea Bressan, Markus Ball, D. Panzieri, Janusz Marzec, M. Tasevsky, E. Mitrofanov, G. Nukazuka, M. Slunecka, A. Magnon, Takahiro Iwata, Federica Sozzi, W. Meyer, K. Kurek, Gerhard K. Mallot, Aram Kotzinian, R. Windmolders, B.I. Vasilishin, M. Meyer, A.G. Chumakov, J. Pretz, Arseniy Rybnikov, W.-D. Nowak, V. Anosov, V. Andrieux, Adam Szabelski, A. Nagaytsev, F. Balestra, N. Pierre, F. Gautheron, C. Riedl, Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, COMPASS, Institut de Recherches sur les lois Fondamentales de l'Univers ( IRFU ), Commissariat à l'énergie atomique et aux énergies alternatives ( CEA ) -Université Paris-Saclay, Akhunzyanov, R., Alexeev, M. G., Alexeev, G. D., Amoroso, A., Andrieux, V., Anfimov, N. V., Anosov, V., Antoshkin, A., Augsten, K., Augustyniak, W., Austregesilo, A., Azevedo, C. D. R., Badełek, B., Balestra, F., Ball, M., Barth, J., Beck, R., Bedfer, Y., Bernhard, J., Bicker, K., Bielert, E. R., Birsa, R., Bodlak, M., Bordalo, P., Bradamante, F., Bressan, A., Büchele, M., Burtsev, V. E., Capozza, L., Chang, W. -C., Chatterjee, C., Chiosso, M., Chumakov, A. G., Chung, S. -U., Cicuttin, A., Crespo, M. L., Curiel, Q., Dalla Torre, S., Dasgupta, S. S., Dasgupta, S., Denisov, O. Yu., Dhara, L., Donskov, S. V., Doshita, N., Dreisbach, Ch., Dünnweber, W., Dusaev, R. R., Dziewiecki, M., Efremov, A., Eversheim, P. D., Faessler, M., Ferrero, A., Finger, M., Fischer, H., Franco, C., du Fresne von Hohenesche, N., Friedrich, J. M., Frolov, V., Gautheron, F., Gavrichtchouk, O. P., Gerassimov, S., Giarra, J., Gnesi, I., Gorzellik, M., Grasso, A., Gridin, A., Grosse Perdekamp, M., Grube, B., Guskov, A., Hahne, D., Hamar, G., von Harrach, D., Heitz, R., Herrmann, F., Horikawa, N., D'Hose, N., Hsieh, C. -Y., Huber, S., Ishimoto, S., Ivanov, A., Iwata, T., Jary, V., Joosten, R., Jörg, P., Kabuß, E., Kerbizi, A., Ketzer, B., Khaustov, G. V., Khokhlov, Yu. A., Kisselev, Yu., Klein, F., Koivuniemi, J. H., Kolosov, V. N., Kondo, K., Konorov, I., Konstantinov, V. F., Kotzinian, A. M., Kouznetsov, O. M., Kral, Z., Krämer, M., Krinner, F., Kroumchtein, Z. V., Kulinich, Y., Kunne, F., Kurek, K., Kurjata, R. P., Kuznetsov, I. I., Kveton, A., Lednev, A. A., Levchenko, E. A., Levorato, S., Lian, Y. -S., Lichtenstadt, J., Longo, R., Lyubovitskij, V. E., Maggiora, A., Magnon, A., Makins, N., Makke, N., Mallot, G. K., Mamon, S. A., Marchand, C., Marianski, B., Martin, A., Marzec, J., Matoušek, J., Matsuda, H., Matsuda, T., Meshcheryakov, G. V., Meyer, M., Meyer, W., Mikhailov, Yu. V., Mikhasenko, M., Mitrofanov, E., Mitrofanov, N., Miyachi, Y., Moretti, A., Nagaytsev, A., Nerling, F., Neyret, D., Nový, J., Nowak, W. -D., Nukazuka, G., Nunes, A. S., Olshevsky, A. G., Orlov, I., Ostrick, M., Panzieri, D., Parsamyan, B., Paul, S., Peng, J. -C., Pereira, F., Pesaro, G., Pešek, M., Pešková, M., Peshekhonov, D. V., Pierre, N., Platchkov, S., Pochodzalla, J., Polyakov, V. A., Pretz, J., Quaresma, M., Quintans, C., Ramos, S., Regali, C., Reicherz, G., Riedl, C., Ryabchikov, D. I., Rybnikov, A., Rychter, A., Salac, R., Samoylenko, V. D., Sandacz, A., Sarkar, S., Savin, I. A., Sawada, T., Sbrizzai, G., Schiavon, P., Schmieden, H., Seder, E., Selyunin, A., Silva, L., Sinha, L., Sirtl, S., Slunecka, M., Sozzi, F., Smolik, J., Srnka, A., Steffen, D., Stolarski, M., Subrt, O., Sulc, M., Suzuki, H., Szabelski, A., Szameitat, T., Sznajder, P., Tasevsky, M., Tessaro, S., Tessarotto, F., Thiel, A., Tomsa, J., Tosello, F., Tskhay, V., Uhl, S., Vasilishin, B. I., Vauth, A., Veit, B. M., Veloso, J., Vidon, A., Virius, M., Wallner, S., Wilfert, M., Windmolders, R., Zaremba, K., Zavada, P., Zavertyaev, M., Zemlyanichkina, E., and Ziembicki, M.
Subjects: Hadron, 0 [higher-order], target: isoscalar, 01 natural sciences, COMPASS, deep inelastic scattering [muon+ nucleon], High Energy Physics - Experiment, High Energy Physics - Experiment (hep-ex), K: multiplicity, High Energy Physics - Phenomenology (hep-ph), [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], isoscalar [target], Invariant mass, Nuclear Experiment, Boson, Physics, Quantum chromodynamics, quark: fragmentation function, higher-order: 0, photon, perturbation theory: higher-order, hep-ph, мюоны, lcsh:QC1-999, Bjorken [scaling], High Energy Physics - Phenomenology, beam [muon], рассеяние, factorization [cross section], multiplicity [pi], Particle Physics - Experiment, perturbation theory [quantum chromodynamics], Particle physics, Nuclear and High Energy Physics, Meson, FOS: Physical sciences, ratio [multiplicity], fragmentation function [quark], x-dependence, scaling: Bjorken, charged particle: multiplicity, phase space, multiplicity [charged particle], [ PHYS.HEXP ] Physics [physics]/High Energy Physics - Experiment [hep-ex], виртуальные фотоны, 0103 physical sciences, ddc:530, universality, quantum chromodynamics: perturbation theory, 010306 general physics, Particle Physics - Phenomenology, muon+ nucleon: deep inelastic scattering, Muon, multiplicity: ratio, pi: multiplicity, 010308 nuclear & particles physics, hep-ex, muon: beam, Multiplicity (mathematics), cross section: factorization, CERN SPS, Deep inelastic scattering, higher-order [perturbation theory], [PHYS.HPHE]Physics [physics]/High Energy Physics - Phenomenology [hep-ph], каоны, [ PHYS.HPHE ] Physics [physics]/High Energy Physics - Phenomenology [hep-ph], High Energy Physics::Experiment, multiplicity [K], hadronization, lcsh:Physics, experimental results
Abstract: The K$^{-}$ over K$^{+}$ multiplicity ratio is measured in deep-inelastic scattering, for the first time for kaons carrying a large fraction $z$ of the virtual-photon energy. The data were obtained by the COMPASS collaboration using a 160 GeV muon beam and an isoscalar $^6$LiD target. The regime of deep-inelastic scattering is ensured by requiring $Q^2>1$ (GeV/$c)^2$ for the photon virtuality and $W>5$ GeV/$c^2$ for the invariant mass of the produced hadronic system. Kaons are identified in the momentum range from 12 GeV/$c$ to 40 GeV/$c$, thereby restricting the range in Bjorken-$x$ to $0.010.75$. For very large values of $z$, $i.e.$ $z>0.8$, we observe the kaon multiplicity ratio to fall below the lower limits expected from calculations based on leading and next-to-leading order perturbative quantum chromodynamics. Also, the kaon multiplicity ratio shows a strong dependence on the missing mass of the single-kaon production process. This suggests that within the perturbative quantum chromodynamics formalism an additional correction may be required, which takes into account the phase space available for hadronisation., Comment: 16 pages, 7 figures
Published: 2018

34. Contribution of exclusive diffractive processes to the measured azimuthal asymmetries in SIDIS

Author: F. Tosello, Andrea Ferrero, Jen-Chieh Peng, Norihiro Doshita, N. d'Hose, W.-D. Nowak, S. Ramos, S.S. Dasgupta, J. Smolik, Valery E. Lyubovitskij, Nikolay Anfimov, R. Joosten, O. Subrt, A. Koval, B. Ventura, J.F.C.A. Veloso, M. Mikhasenko, R.R. Dusaev, V. Tskhay, G.V. Meshcheryakov, B. Grube, H. Pekeler, P.D. Eversheim, H. Suzuki, C.D.R. Azevedo, Anne-Laure Martin, A. Srnka, Yu. V. Mikhailov, F. Tessarotto, K. Kondo Horikawa, G. Mattson, A.B. Ivanov, Alexandr Selyunin, M. Virius, Y. Miyachi, Yuxiang Zhao, Frank Klein, J. Lichtenstadt, M. Quaresma, O.M. Kouznetsov, O.Yu. Denisov, F. Gautheron, C. Chatterjee, K. Zaremba, P.M.M. Correia, V. Andrieux, Y. Bedfer, Markus Ball, Nour Makke, I. Konorov, S. Sarkar, V. Anosov, V.F. Konstantinov, W. C. Chang, M. V. Zavertyaev, V.A. Polyakov, Alessandro Bressan, D. Neyret, A. Sandacz, C. Franco, P. Jörg, G. Sbrizzai, B.M. Veit, S. Wallner, D. von Harrach, F. Kunne, Adam Szabelski, J. Agarwala, Miroslav Sulc, M. Meyer, Z. Kral, S. Levorato, A.G. Chumakov, A. Amoroso, A. Vauth, D.I. Ryabchikov, A. Magnon, C.-Y. Hsieh, V.E. Burtsev, O.P. Gavrichtchouk, S. Ishimoto, Martin Bodlak, L. Sinha, T. Matsuda, W. Augustyniak, H. Fischer, V. Frolov, Soumen Paul, N. Mitrofanov, R. Beck, T. Rudnicki, R.P. Kurjata, A. Kerbizi, Naomi C R Makins, A. Grasso, A. Townsend, M. Büchele, A.G. Olshevsky, K. Lavickova, J. Pretz, R. Longo, D.V. Peshekhonov, A. Nagaytsev, F. Balestra, M. Finger, M. Wilfert, T. Iwata, S. Platchkov, P. Zavada, N. Pierre, Jan Matousek, G. Reicherz, J.H. Koivuniemi, M. Grosse Perdekamp, Maria Liz Crespo, Yakov Petrovich Kulinich, F. Pereira, Y.-S. Lian, M. Gorzellik, S.-U. Chung, A. Antoshkin, P. Sznajder, S. V. Donskov, M. Pešek, V. Jary, A. Gridin, M. Stolarski, J. Nový, M.G. Alexeev, M. A. Faessler, S. Uhl, François Herrmann, P.-J. Lin, J. Giarra, Kamil Augsten, M. Pešková, I. Gnesi, A.S. Nunes, D. Panzieri, Janusz Marzec, J. Berenguer Antequera, Arseniy Rybnikov, M. Ziembicki, D. Steffen, Jan Tomsa, Franco Bradamante, Yu. Kisselev, E. M. Kabuß, A.V. Efremov, C. Riedl, P. Bordalo, Johannes Bernhard, Ch. Dreisbach, A. Guskov, C. Quintans, A. Maggiora, A. Thiel, I.A. Savin, M. Ostrick, G. D. Alexeev, G.V. Khaustov, W. Dünnweber, M. Slunečka, A. Kveton, R. Heitz, Andres Cicuttin, A. Moretti, V.D. Samoylenko, M. Jandek, S.A. Mamon, A. Maltsev, I. Denisenko, S. Dalla Torre, G. Nukazuka, M. Chiosso, J. Pochodzalla, M. Zemko, F. Kaspar, W. Meyer, K. Kurek, A. Vidon, B. Marianski, Bakur Parsamyan, S. Gerassimov, N. Horikawa, S. Tessaro, M. Wagner, F. Krinner, Yu.A. Khokhlov, Aram Kotzinian, B.I. Vasilishin, J. Barth, S. Dasgupta, E. Mitrofanov, Gerhard K. Mallot, D. D'Ago, C. Naim, L. Dhara, B. Badelek, B. Ketzer, H. Schmieden, J.M. Friedrich, S. Huber, E. Zemlyanichkina, A. Rychter, V.N. Kolosov, Agarwala, J., Alexeev, M. G., Alexeev, G. D., Amoroso, A., Andrieux, V., Anfimov, N. V., Anosov, V., Antoshkin, A., Augsten, K., Augustyniak, W., Azevedo, C. D. R., Badelek, B., Balestra, F., Ball, M., Barth, J., Beck, R., Bedfer, Y., Berenguer Antequera, J., Bernhard, J., Bodlak, M., Bordalo, P., Bradamante, F., Bressan, A., Buchele, M., Burtsev, V. E., Chang, W. -C., Chatterjee, C., Chiosso, M., Chumakov, A. G., Chung, S. -U., Cicuttin, A., Correia, P. M. M., Crespo, M. L., D'Ago, D., Dalla Torre, S., Dasgupta, S. S., Dasgupta, S., Denisenko, I., Denisov, O. Y., Dhara, L., Donskov, S. V., Doshita, N., Dreisbach, C., Dunnweber, W., Dusaev, R. R., Efremov, A., Eversheim, P. D., Faessler, M., Ferrero, A., Finger, M., Fischer, H., Franco, C., Friedrich, J. M., Frolov, V., Gautheron, F., Gavrichtchouk, O. P., Gerassimov, S., Giarra, J., Gnesi, I., Gorzellik, M., Grasso, A., Gridin, A., Grosse Perdekamp, M., Grube, B., Guskov, A., von Harrach, D., Heitz, R., Herrmann, F., Horikawa, N., D'Hose, N., Hsieh, C. -Y., Huber, S., Ishimoto, S., Ivanov, A., Iwata, T., Jandek, M., Jary, V., Joosten, R., Jorg, P., Kabuss, E., Kaspar, F., Kerbizi, A., Ketzer, B., Khaustov, G. V., Khokhlov, Y. A., Kisselev, Y., Klein, F., Koivuniemi, J. H., Kolosov, V. N., Kondo Horikawa, K., Konorov, I., Konstantinov, V. F., Kotzinian, A. M., Kouznetsov, O. M., Koval, A., Kral, Z., Krinner, F., Kulinich, Y., Kunne, F., Kurek, K., Kurjata, R. P., Kveton, A., Lavickova, K., Levorato, S., Lian, Y. -S., Lichtenstadt, J., Lin, P. -J., Longo, R., Lyubovitskij, V. E., Maggiora, A., Magnon, A., Makins, N., Makke, N., Mallot, G. K., Maltsev, A., Mamon, S. A., Marianski, B., Martin, A., Marzec, J., Matousek, J., Matsuda, T., Mattson, G., Meshcheryakov, G. V., Meyer, M., Meyer, W., Mikhailov, Y. V., Mikhasenko, M., Mitrofanov, E., Mitrofanov, N., Miyachi, Y., Moretti, A., Nagaytsev, A., Naim, C., Neyret, D., Novy, J., Nowak, W. -D., Nukazuka, G., Nunes, A. S., Olshevsky, A. G., Ostrick, M., Panzieri, D., Parsamyan, B., Paul, S., Pekeler, H., Peng, J. -C., Pereira, F., Pesek, M., Peshekhonov, D. V., Peskova, M., Pierre, N., Platchkov, S., Pochodzalla, J., Polyakov, V. A., Pretz, J., Quaresma, M., Quintans, C., Ramos, S., Reicherz, G., Riedl, C., Rudnicki, T., Ryabchikov, D. I., Rybnikov, A., Rychter, A., Samoylenko, V. D., Sandacz, A., Sarkar, S., Savin, I. A., Sbrizzai, G., Schmieden, H., Selyunin, A., Sinha, L., Slunecka, M., Smolik, J., Srnka, A., Steffen, D., Stolarski, M., Subrt, O., Sulc, M., Suzuki, H., Szabelski, A., Sznajder, P., Tessaro, S., Tessarotto, F., Thiel, A., Tomsa, J., Tosello, F., Townsend, A., Tskhay, V., Uhl, S., Vasilishin, B. I., Vauth, A., Veit, B. M., Veloso, J., Ventura, B., Vidon, A., Virius, M., Wagner, M., Wallner, S., Wilfert, M., Zaremba, K., Zavada, P., Zavertyaev, M., Zemko, M., Zemlyanichkina, E., Zhao, Y., Ziembicki, M., Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, and COMPASS
Subjects: HERMES experiment, virtual [photon], Hadron, leptoproduction [hadron], measurement methods, Nuclear Theory, Virtual particle, HERMES, 01 natural sciences, SIDIS, COMPASS, hadron: leptoproduction, High Energy Physics - Experiment, azimthal asymmetrie, production [diffraction], High Energy Physics - Experiment (hep-ex), High Energy Physics - Phenomenology (hep-ph), semi-inclusive reaction [deep inelastic scattering], [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], COMPASS experiment, Nuclear Experiment, Physics, deep inelastic scattering: semi-inclusive reaction, nucleon, hep-ph, photon: energy, TMD obsvervable, angular dependence, High Energy Physics - Phenomenology, modulation, hadron: final state, TMD obsvervables, beam [muon], asymmetry [angular distribution], interpretation of experiments, deuteron: target, transverse momentum [quark], Nucleon, diffraction: production, Particle Physics - Experiment, Quark, Nuclear and High Energy Physics, Particle physics, azimthal asymmetries, exclusive reaction, angular distribution: asymmetry, Meson, FOS: Physical sciences, vector meson: production, 0103 physical sciences, kinematics: effect, lcsh:Nuclear and particle physics. Atomic energy. Radioactivity, ddc:530, final state [hadron], 010306 general physics, Particle Physics - Phenomenology, Muon, muon: beam, 010308 nuclear & particles physics, production [vector meson], hep-ex, energy [photon], CERN SPS, effect [kinematics], lcsh:QC770-798, quark: transverse momentum, High Energy Physics::Experiment, target [deuteron], photon: virtual
Abstract: Hadron leptoproduction in Semi-Inclusive measurements of Deep-Inelastic Scattering (SIDIS) on unpolarised nucleons allows one to get information on the intrinsic transverse momentum of quarks in a nucleon and on the Boer-Mulders function through the measurement of azimuthal modulations in the cross section. These modulations were recently measured by the HERMES experiment at DESY on proton and deuteron targets, and by the COMPASS experiment using the CERN SPS muon beam and a $^6$LiD target. In both cases, the amplitudes of the $\cos\phi_h$ and $\cos 2\phi_h$ modulations show strong kinematic dependences for both positive and negative hadrons. It has been known since some time that the measured final-state hadrons in those SIDIS experiments receive a contribution from exclusive diffractive production of vector mesons, particularly important at large values of $z$, the fraction of the virtual photon energy carried by the hadron. In previous measurements of azimuthal asymmetries this contribution was not taken into account, because it was not known that it could distort the azimuthal modulations. Presently, a method to evaluate the contribution of the exclusive reactions to the azimuthal asymmetries measured by COMPASS has been developed. The subtraction of this contribution results in a better understanding of the kinematic effects, and the remaining non-zero $\cos 2\phi_h$ modulation gives indication for a non-zero Boer-Mulders effect., Comment: 13 pages, 7 figures
Published: 2019

35. New analysis of ηπ tensor resonances measured at the COMPASS experiment

Author: L. Sinha, T. Matsuda, C. Quintans, A. Jackura, E.A. Levchenko, Andrew Ivanov, M.G. Alexeev, D. von Harrach, S. Uhl, J. Giarra, Michal Dziewiecki, Nikolay Anfimov, Franco Bradamante, M. Krämer, Jen-Chieh Peng, N. C. R. Makins, S.S. Dasgupta, W.-D. Nowak, Fabrice Gautheron, E. Fuchey, R. Joosten, P. Jörg, E. M. Kabuß, César Fernández-Ramírez, Jan Matousek, Aram Kotzinian, S.A. Mamon, M. A. Faessler, Adam P. Szczepaniak, M. Aghasyan, J. Pochodzalla, P. Bordalo, F. Kunne, A. Maggiora, A. Vauth, A. Antoshkin, M. Slunecka, Geoffrey C. Fox, R.R. Dusaev, V. Tskhay, W. Augustyniak, S. Ramos, S. Levorato, V.E. Burtsev, B.I. Vasilishin, V. Andrieux, Kamil Augsten, Adam Szabelski, N. I. Zhuravlev, M. Tasevsky, E. Mitrofanov, I.A. Savin, N. Mitrofanov, P. Sznajder, K. Kondo, P. Kremser, K. Schmidt, Andrea Ferrero, G.V. Meshcheryakov, J. Lichtenstadt, Sagari Sarkar, Yu. V. Mikhailov, O.Yu. Denisov, Z. Kral, P. Schiavon, M. Stolarski, D. Steffen, M. Gorzellik, Y. Bedfer, M. Büchele, J. ter Wolbeek, F. Giordano, C. Chatterjee, J. Nový, A. Kveton, S. Sirtl, S.-U. Chung, J.H. Koivuniemi, Jan Tomsa, A. Thiel, Norihiro Doshita, S. Platchkov, M. Grosse Perdekamp, E. Seder, P. Zavada, H. Matsuda, D. Neyret, R. Beck, A. Kerbizi, A. Nagaytsev, F. Balestra, N. Pierre, A. Grasso, A.V. Efremov, François Herrmann, Miroslav Sulc, Laura Silva, F. Tessarotto, M. Ziembicki, Celso Augusto Guimarães Santos, F. Pereira, G. Nukazuka, N. d'Hose, A. Magnon, J. Smolik, W. Meyer, Maria Liz Crespo, V. Jary, K. Zaremba, Yakov Petrovich Kulinich, S. Gerassimov, F. H. Heinsius, Andres Cicuttin, I. Orlov, V.D. Samoylenko, G. Reicherz, M. Pešková, Valery E. Lyubovitskij, S. V. Donskov, M. Pešek, R. Akhunzyanov, Takahiro Iwata, V.A. Polyakov, A.S. Nunes, M. Finger, S. Dalla Torre, N. Horikawa, D. Panzieri, Janusz Marzec, S. Dasgupta, A. Austregesilo, O. Subrt, G. Sbrizzai, G.V. Khaustov, F. Tosello, G. D. Alexeev, C. Riedl, T. Grussenmeyer, C. Regali, W. Dünnweber, I. Konorov, A. Amoroso, K. Bicker, V. Anosov, Yu. Kisselev, Johannes Bernhard, Ch. Dreisbach, A. Guskov, R. Salac, S. Tessaro, D. Hahne, P.D. Eversheim, N. du Fresne von Hohenesche, T. Schlüter, M. Ostrick, Andrea Bressan, T. Szameitat, Y. Miyachi, H. Suzuki, C.D.R. Azevedo, E.R. Bielert, A.G. Olshevsky, A.A. Lednev, R. Birsa, Jannes Nys, F. Krinner, R. Heitz, Yu.A. Khokhlov, M. Levillain, C.-Y. Hsieh, V. Frolov, J. Barth, Soumen Paul, Gerhard K. Mallot, A. Sandacz, T. Weisrock, I. J. Choi, Ilya Kuznetsov, F. Nerling, A. Srnka, K. Königsmann, M. V. Zavertyaev, H. Schmieden, J.M. Friedrich, S. Huber, E. Zemlyanichkina, Alessandro Pilloni, N.S. Rogacheva, Y.-S. Lian, A. Vidon, B. Marianski, Bakur Parsamyan, Z.V. Kroumchtein, L. Dhara, Anne-Laure Martin, G. Hamar, B. Badelek, V.F. Konstantinov, S. Wallner, S. Ishimoto, H. Fischer, B. Ketzer, A. Rychter, Frank Klein, R. Longo, V.N. Kolosov, K. Schönning, C. Franco, V. Pauk, Markus Ball, Yu. Ivanshin, D.I. Ryabchikov, J.F.C.A. Veloso, R.P. Kurjata, O.M. Kouznetsov, M. Virius, Mikhail Mikhasenko, B. Grube, Alexandr Selyunin, Nour Makke, W. C. Chang, M. Quaresma, D.V. Peshekhonov, I. Gnesi, M. Meyer, A.G. Chumakov, J. Pretz, T. Sawada, M. Chiosso, K. Kurek, Vincent Mathieu, Arseniy Rybnikov, M. Wilfert, O.P. Gavrichtchouk, Martin Bodlak, Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, JPAC, COMPASS, Institut de Recherches sur les lois Fondamentales de l'Univers ( IRFU ), Commissariat à l'énergie atomique et aux énergies alternatives ( CEA ) -Université Paris-Saclay, Jackura, A., Fernández-Ramírez, C., Mikhasenko, M., Pilloni, A., Mathieu, V., Nys, J., Pauk, V., Szczepaniak, A. P., Fox, G., Aghasyan, M., Akhunzyanov, R., Alexeev, M. G., Alexeev, G. D., Amoroso, A., Andrieux, V., Anfimov, N. V., Anosov, V., Antoshkin, A., Augsten, K., Augustyniak, W., Austregesilo, A., Azevedo, C. D. R., Badełek, B., Balestra, F., Ball, M., Barth, J., Beck, R., Bedfer, Y., Bernhard, J., Bicker, K., Bielert, E. R., Birsa, R., Bodlak, M., Bordalo, P., Bradamante, F., Bressan, A., Büchele, M., Burtsev, V. E., Chang, W. -C., Chatterjee, C., Chiosso, M., Choi, I., Chumakov, A. G., Chung, S. -U., Cicuttin, A., Crespo, M. L., Dalla Torre, S., Dasgupta, S. S., Dasgupta, S., Denisov, O. Yu., Dhara, L., Donskov, S. V., Doshita, N., Dreisbach, Ch., Dünnweber, W., Dusaev, R. R., Dziewiecki, M., Efremov, A., Eversheim, P. D., Faessler, M., Ferrero, A., Finger, M., Fischer, H., Franco, C., du Fresne von Hohenesche, N., Friedrich, J. M., Frolov, V., Fuchey, E., Gautheron, F., Gavrichtchouk, O. P., Gerassimov, S., Giarra, J., Giordano, F., Gnesi, I., Gorzellik, M., Grasso, A., Grosse Perdekamp, M., Grube, B., Grussenmeyer, T., Guskov, A., Hahne, D., Hamar, G., von Harrach, D., Heinsius, F. H., Heitz, R., Herrmann, F., Horikawa, N., D'Hose, N., Hsieh, C. -Y., Huber, S., Ishimoto, S., Ivanov, A., Ivanshin, Yu., Iwata, T., Jary, V., Joosten, R., Jörg, P., Kabuß, E., Kerbizi, A., Ketzer, B., Khaustov, G. V., Khokhlov, Yu. A., Kisselev, Yu., Klein, F., Koivuniemi, J. H., Kolosov, V. N., Kondo, K., Königsmann, K., Konorov, I., Konstantinov, V. F., Kotzinian, A. M., Kouznetsov, O. M., Kral, Z., Krämer, M., Kremser, P., Krinner, F., Kroumchtein, Z. V., Kulinich, Y., Kunne, F., Kurek, K., Kurjata, R. P., Kuznetsov, I. I., Kveton, A., Lednev, A. A., Levchenko, E. A., Levillain, M., Levorato, S., Lian, Y. -S., Lichtenstadt, J., Longo, R., Lyubovitskij, V. E., Maggiora, A., Magnon, A., Makins, N., Makke, N., Mallot, G. K., Mamon, S. A., Marianski, B., Martin, A., Marzec, J., Matoušek, J., Matsuda, H., Matsuda, T., Meshcheryakov, G. V., Meyer, M., Meyer, W., Mikhailov, Yu. V., Mitrofanov, E., Mitrofanov, N., Miyachi, Y., Nagaytsev, A., Nerling, F., Neyret, D., Nový, J., Nowak, W. -D., Nukazuka, G., Nunes, A. S., Olshevsky, A. G., Orlov, I., Ostrick, M., Panzieri, D., Parsamyan, B., Paul, S., Peng, J. -C., Pereira, F., Pešek, M., Pešková, M., Peshekhonov, D. V., Pierre, N., Platchkov, S., Pochodzalla, J., Polyakov, V. A., Pretz, J., Quaresma, M., Quintans, C., Ramos, S., Regali, C., Reicherz, G., Riedl, C., Rogacheva, N. S., Ryabchikov, D. I., Rybnikov, A., Rychter, A., Salac, R., Samoylenko, V. D., Sandacz, A., Santos, C., Sarkar, S., Savin, I. A., Sawada, T., Sbrizzai, G., Schiavon, P., Schlüter, T., Schmidt, K., Schmieden, H., Schönning, K., Seder, E., Selyunin, A., Silva, L., Sinha, L., Sirtl, S., Slunecka, M., Smolik, J., Srnka, A., Steffen, D., Stolarski, M., Subrt, O., Sulc, M., Suzuki, H., Szabelski, A., Szameitat, T., Sznajder, P., Tasevsky, M., Tessaro, S., Tessarotto, F., Thiel, A., Tomsa, J., Tosello, F., Tskhay, V., Uhl, S., Vasilishin, B. I., Vauth, A., Veloso, J., Vidon, A., Virius, M., Wallner, S., Weisrock, T., Wilfert, M., ter Wolbeek, J., Zaremba, K., Zavada, P., Zavertyaev, M., Zemlyanichkina, E., Zhuravlev, N., and Ziembicki, M.
Subjects: M012M3, 11.80.Et, COMPASS, 01 natural sciences, High Energy Physics - Experiment, UNITARITY, Subatomär fysik, Pomeron, Compass, excited state, Subatomic Physics, Nuclear and high energy physics, peripheral photoproduction, physics, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], COMPASS experiment, EXCHANGE, a2(1320), Nuclear Experiment, a2(1700), Quantum chromodynamics, Physics, Unitarity, PP INTERACTIONS, hep-ph, amplitude analysis, MESONS, lcsh:QC1-999, analytic properties, High Energy Physics - Phenomenology, Amplitude, S-matrix, Particle Physics - Experiment, AMPLITUDE ANALYSIS, Nuclear and High Energy Physics, Particle physics, Meson, CONNECTION, PHYSICS, 14.40.Be, [ PHYS.HEXP ] Physics [physics]/High Energy Physics - Experiment [hep-ex], pomeron, 0103 physical sciences, ddc:530, Tensor, 010306 general physics, M012W3, Particle Physics - Phenomenology, POMERON, hep-ex, 010308 nuclear & particles physics, M162M, 11.55.Bq, 11.55.Fv, meson resonance, M162W, Physics and Astronomy, 450 GEV/C, [PHYS.HPHE]Physics [physics]/High Energy Physics - Phenomenology [hep-ph], [ PHYS.HPHE ] Physics [physics]/High Energy Physics - Phenomenology [hep-ph], High Energy Physics::Experiment, MATRIX, lcsh:Physics
Abstract: We present a new amplitude analysis of the $\eta\pi$ $D$-wave in $\pi^- p\to \eta\pi^- p$ measured by COMPASS. Employing an analytical model based on the principles of the relativistic $S$-matrix, we find two resonances that can be identified with the $a_2(1320)$ and the excited $a_2^\prime(1700)$, and perform a comprehensive analysis of their pole positions. For the mass and width of the $a_2$ we find $M=(1307 \pm 1 \pm 6)$~MeV and $\Gamma=(112 \pm 1 \pm 8)$~MeV, and for the excited state $a_2^\prime$ we obtain $M=(1720 \pm 10 \pm 60)$~MeV and $\Gamma=(280\pm 10 \pm 70)$~MeV, respectively., Comment: 15 pages, 6 figures
Published: 2018

36. Transverse extension of partons in the proton probed in the sea-quark range by measuring the DVCS cross section

Author: C. Quintans, A. Vidon, N. C. R. Makins, E. Fuchey, M. V. Zavertyaev, Nikolay Anfimov, Mikhail Mikhasenko, K. Zaremba, V.A. Polyakov, Y.-S. Lian, Franco Bradamante, R. Joosten, C. Marchand, Alexandr Selyunin, G. Sbrizzai, Jan Matousek, G. Reicherz, M. Levillain, C.-Y. Hsieh, B. Grube, V. Frolov, A. Amoroso, N. du Fresne von Hohenesche, C. Riedl, Aram Kotzinian, Nour Makke, W. C. Chang, S.A. Mamon, P. Schiavon, Soumen Paul, V. Andrieux, H. Schmieden, J.M. Friedrich, Adam Szabelski, S. V. Donskov, M. Pešek, A. Srnka, Z.V. Kroumchtein, M. Quaresma, S.-U. Chung, S. Huber, I. J. Choi, A.S. Nunes, P.D. Eversheim, W. Duennweber, J. Pochodzalla, R. Akhunzyanov, T. Sawada, J. Novy, D. Panzieri, Janusz Marzec, K. Schoennig, R.P. Kurjata, H. Suzuki, C.D.R. Azevedo, H. Matsuda, Ilya Kuznetsov, S. Platchkov, M. Faessler, M. Stolarski, François Herrmann, D.V. Peshekhonov, B.I. Vasilishin, M. Virius, T. Grussenmeyer, F. Tessarotto, E. Zemlyanichkina, P. Bordalo, A. Nagaytsev, F. Balestra, N. Pierre, Andres Cicuttin, A. Moretti, R.R. Dusaev, F. Nerling, V. Tskhay, M. Chiosso, G. Hamar, Frank Klein, M. Kraemer, J. ter Wolbeek, Jan Tomsa, G. D. Alexeev, I.A. Savin, W. Meyer, A.V. Efremov, I. Orlov, V.D. Samoylenko, D.I. Ryabchikov, M. Slunecka, Yu. Kisselev, F. Gautheron, Miroslav Sulc, Markus Ball, Yu. Ivanshin, R. Salac, I. Gnesi, F. Tosello, K. Kurek, M. Ziembicki, M. Ostrick, O.P. Gavrichtchouk, W.-D. Nowak, Martin Bodlak, L. Sinha, M. Buechele, L. Dhara, T. Matsuda, E.R. Bielert, B. Badelek, N. I. Zhuravlev, Norihiro Doshita, M. Meyer, A.G. Chumakov, E. Burtin, A. Maggiora, E.A. Levchenko, B. Ketzer, N. d'Hose, G.V. Meshcheryakov, A. Austregesilo, J. Barth, V.F. Konstantinov, S. Dalla Torre, G.V. Khaustov, A. Rychter, Yu. V. Mikhailov, S. Wallner, R. Longo, V.N. Kolosov, S. Sirtl, J.F.C.A. Veloso, J. Smolik, A. Vauth, O. Subrt, P. Zavada, S. Ishimoto, H. Fischer, Gerhard K. Mallot, J. Pretz, Alan D. Martin, M.G. Alexeev, S. Uhl, A.G. Olshevsky, R. Heitz, A. Grasso, Maria Liz Crespo, Y. Miyachi, A.A. Lednev, O.M. Kouznetsov, J. Giarra, Michal Dziewiecki, M. Grosse Perdekamp, C. Franco, D. Neyret, W. Augustyniak, S. Ramos, M. Gorzellik, V. Jary, F. Pereira, O.Yu. Denisov, S. Gerassimov, N. Horikawa, A. Sandacz, Andrew Ivanov, Arseniy Rybnikov, S. Sarkar, Z. Kral, F. Kunne, T. Szameitat, K. Juraskova, S. Tessaro, D. Hahne, P. Sznajder, N.S. Rogacheva, D. von Harrach, C. Regali, F. Krinner, Yu.A. Khokhlov, B. Marianski, Bakur Parsamyan, D. Steffen, P. Joerg, S. Levorato, R. Beck, A. Kerbizi, V.E. Burtsev, N. Mitrofanov, A. Thiel, M. Tasevsky, E. Mitrofanov, G. Pesaro, A. Gridin, E. Seder, Celso Augusto Guimarães Santos, J. Lichtenstadt, Valery E. Lyubovitskij, M. Finger, R. Birsa, Andrea Ferrero, S. Dasgupta, A. Antoshkin, K. Kondo, Kamil Augsten, Y. Bedfer, C. Chatterjee, V. Anosov, J.H. Koivuniemi, M. Pešková, Jen-Chieh Peng, S.S. Dasgupta, A. Kveton, G. Nukazuka, A. Magnon, I. Konorov, Laura Silva, Yakov Petrovich Kulinich, E. M. Kabuss, Takahiro Iwata, B.M. Veit, K. Bicker, Johannes Bernhard, Ch. Dreisbach, A. Guskov, Andrea Bressan, M. Wilfert, Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, COMPASS, Akhunzyanov, R., Alexeev, M. G., Alexeev, G. D., Amoroso, A., Andrieux, V., Anfimov, N. V., Anosov, V., Antoshkin, A., Augsten, K., Augustyniak, W., Austregesilo, A., Azevedo, C. D. R., Badelek, B., Balestra, F., Ball, M., Barth, J., Beck, R., Bedfer, Y., Bernhard, J., Bicker, K., Bielert, E. R., Birsa, R., Bodlak, M., Bordalo, P., Bradamante, F., Bressan, A., Buchele, M., Burtin, E., Burtsev, V. E., Chang, W. -C., Chatterjee, C., Chiosso, M., Choi, I., Chumakov, A. G., Chung, S. -U., Cicuttin, A., Crespo, M. L., Dalla Torre, S., Dasgupta, S. S., Dasgupta, S., Denisov, O. Y., Dhara, L., Donskov, S. V., Doshita, N., Dreisbach, C., Dunnweber, W., Dusaev, R. R., Dziewiecki, M., Efremov, A., Eversheim, P. D., Faessler, M., Ferrero, A., Finger, M., Fischer, H., Franco, C., du Fresne von Hohenesche, N., Friedrich, J. M., Frolov, V., Fuchey, E., Gautheron, F., Gavrichtchouk, O. P., Gerassimov, S., Giarra, J., Gnesi, I., Gorzellik, M., Grasso, A., Gridin, A., Grosse Perdekamp, M., Grube, B., Grussenmeyer, T., Guskov, A., Hahne, D., Hamar, G., von Harrach, D., Heitz, R., Herrmann, F., Horikawa, N., D'Hose, N., Hsieh, C. -Y., Huber, S., Ishimoto, S., Ivanov, A., Ivanshin, Y., Iwata, T., Jary, V., Joosten, R., Jorg, P., Juraskova, K., Kabuss, E., Kerbizi, A., Ketzer, B., Khaustov, G. V., Khokhlov, Y. A., Kisselev, Y., Klein, F., Koivuniemi, J. H., Kolosov, V. N., Kondo, K., Konorov, I., Konstantinov, V. F., Kotzinian, A. M., Kouznetsov, O. M., Kral, Z., Kramer, M., Krinner, F., Kroumchtein, Z. V., Kulinich, Y., Kunne, F., Kurek, K., Kurjata, R. P., Kuznetsov, I. I., Kveton, A., Lednev, A. A., Levchenko, E. A., Levillain, M., Levorato, S., Lian, Y. -S., Lichtenstadt, J., Longo, R., Lyubovitskij, V. E., Maggiora, A., Magnon, A., Makins, N., Makke, N., Mallot, G. K., Mamon, S. A., Marianski, B., Martin, A., Marzec, J., Matousek, J., Matsuda, H., Matsuda, T., Meshcheryakov, G. V., Meyer, M., Meyer, W., Mikhailov, Y. V., Mikhasenko, M., Mitrofanov, E., Mitrofanov, N., Miyachi, Y., Moretti, A., Nagaytsev, A., Nerling, F., Neyret, D., Novy, J., Nowak, W. -D., Nukazuka, G., Nunes, A. S., Olshevsky, A. G., Orlov, I., Ostrick, M., Panzieri, D., Parsamyan, B., Paul, S., Peng, J. -C., Pereira, F., Pesek, M., Peskova, M., Peshekhonov, D. V., Pierre, N., Platchkov, S., Pochodzalla, J., Polyakov, V. A., Pretz, J., Quaresma, M., Quintans, C., Ramos, S., Regali, C., Reicherz, G., Riedl, C., Rogacheva, N. S., Ryabchikov, D. I., Rybnikov, A., Rychter, A., Salac, R., Samoylenko, V. D., Sandacz, A., Santos, C., Sarkar, S., Savin, I. A., Sawada, T., Sbrizzai, G., Schiavon, P., Schmieden, H., Schonning, K., Seder, E., Selyunin, A., Silva, L., Sinha, L., Sirtl, S., Slunecka, M., Smolik, J., Srnka, A., Steffen, D., Stolarski, M., Subrt, O., Sulc, M., Suzuki, H., Szabelski, A., Szameitat, T., Sznajder, P., Tasevsky, M., Tessaro, S., Tessarotto, F., Thiel, A., Tomsa, J., Tosello, F., Tskhay, V., Uhl, S., Vasilishin, B. I., Vauth, A., Veit, B. M., Veloso, J., Vidon, A., Virius, M., Wallner, S., Wilfert, M., ter Wolbeek, J., Zaremba, K., Zavada, P., Zavertyaev, M., Zemlyanichkina, E., Zhuravlev, N., and Ziembicki, M.
Subjects: Photon, generalized parton distribution, muon: polarization, Proton, Generalized Parton Distribution, Parton, measured [cross section], Proton size, nucl-ex, momentum transfer dependence, 01 natural sciences, COMPASS, Subatomär fysik, p: size, Subatomic Physics, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], Nuclear Experiment, Monte Carlo, Quantum chromodynamics, Physics, Range (particle radiation), photon: production, Generalized Parton Distributions, Deep inelastic scattering, Deeply virtual Compton scattering, Exclusive reactions, Exclusive reaction, lcsh:QC1-999, transverse, beam [muon], slope, size: (transverse), Particle Physics - Experiment, Quark, Nuclear and High Energy Physics, exclusive reaction, slope: (calculated), liquid: target [hydrogen], photon: mediation, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], Nuclear physics, hydrogen: liquid: target, 0103 physical sciences, ddc:530, Nuclear Physics - Experiment, 010306 general physics, beam: polarization, hep-ex, 010308 nuclear & particles physics, muon: beam, 160 GeV/c, +muon+p+photon%22">muon p --> muon p photon, size [p], Compton scattering, cross section: measured, CERN SPS, [PHYS.HPHE]Physics [physics]/High Energy Physics - Phenomenology [hep-ph], High Energy Physics::Experiment, lcsh:Physics, experimental results
Abstract: Physics letters / B B793, 188-194 (2019). doi:10.1016/j.physletb.2019.04.038, Published by North-Holland Publ., Amsterdam
Published: 2019

37. Azimuthal asymmetries of charged hadrons produced in high-energy muon scattering off longitudinally polarised deuterons

Author: C. Adolph, M. Aghasyan, R. Akhunzyanov, M. G. Alexeev, G. D. Alexeev, A. Amoroso, V. Andrieux, N. V. Anfimov, V. Anosov, K. Augsten, W. Augustyniak, A. Austregesilo, C. D. R. Azevedo, B. Badełek, F. Balestra, M. Ball, J. Barth, R. Beck, Y. Bedfer, J. Bernhard, K. Bicker, E. R. Bielert, R. Birsa, M. Bodlak, P. Bordalo, F. Bradamante, C. Braun, A. Bressan, M. Büchele, W.-C. Chang, C. Chatterjee, M. Chiosso, I. Choi, S.-U. Chung, A. Cicuttin, M. L. Crespo, Q. Curiel, S. Dalla Torre, S. S. Dasgupta, S. Dasgupta, O. Yu. Denisov, L. Dhara, S. V. Donskov, N. Doshita, Ch. Dreisbach, V. Duic, W. Dünnweber, M. Dziewiecki, A. Efremov, P. D. Eversheim, W. Eyrich, M. Faessler, A. Ferrero, M. Finger, H. Fischer, C. Franco, N. du Fresne von Vijayan Hohenesche, J. M. Friedrich, V. Frolov, E. Fuchey, F. Gautheron, O. P. Gavrichtchouk, S. Gerassimov, J. Giarra, F. Giordano, I. Gnesi, M. Gorzellik, S. Grabmüller, A. Grasso, M. Grosse Perdekamp, B. Grube, T. Grussenmeyer, A. Guskov, F. Haas, D. Hahne, G. Hamar, D. von Harrach, F. H. Heinsius, R. Heitz, F. Herrmann, N. Horikawa, N. d’Hose, C.-Y. Hsieh, S. Huber, S. Ishimoto, A. Ivanov, Yu. Ivanshin, T. Iwata, V. Jary, R. Joosten, P. Jörg, E. Kabuß, B. Ketzer, G. V. Khaustov, Yu. A. Khokhlov, Yu. Kisselev, F. Klein, K. Klimaszewski, J. H. Koivuniemi, V. N. Kolosov, K. Kondo, K. Königsmann, I. Konorov, V. F. Konstantinov, A. M. Kotzinian, O. M. Kouznetsov, M. Krämer, P. Kremser, F. Krinner, Z. V. Kroumchtein, Y. Kulinich, F. Kunne, K. Kurek, R. P. Kurjata, A. A. Lednev, A. Lehmann, M. Levillain, S. Levorato, Y.-S. Lian, J. Lichtenstadt, R. Longo, A. Maggiora, A. Magnon, N. Makins, N. Makke, G. K. Mallot, B. Marianski, A. Martin, J. Marzec, J. Matoušek, H. Matsuda, T. Matsuda, G. V. Meshcheryakov, M. Meyer, W. Meyer, Yu. V. Mikhailov, M. Mikhasenko, E. Mitrofanov, N. Mitrofanov, Y. Miyachi, A. Nagaytsev, F. Nerling, D. Neyret, J. Nový, W.-D. Nowak, G. Nukazuka, A. S. Nunes, A. G. Olshevsky, I. Orlov, M. Ostrick, D. Panzieri, B. Parsamyan, S. Paul, J.-C. Peng, F. Pereira, M. Pešek, D. V. Peshekhonov, N. Pierre, S. Platchkov, J. Pochodzalla, V. A. Polyakov, J. Pretz, M. Quaresma, C. Quintans, S. Ramos, C. Regali, G. Reicherz, C. Riedl, M. Roskot, N. S. Rossiyskaya, D. I. Ryabchikov, A. Rybnikov, A. Rychter, R. Salac, V. D. Samoylenko, A. Sandacz, C. Santos, S. Sarkar, I. A. Savin, T. Sawada, G. Sbrizzai, P. Schiavon, K. Schmidt, H. Schmieden, K. Schönning, E. Seder, A. Selyunin, L. Silva, L. Sinha, S. Sirtl, M. Slunecka, J. Smolik, A. Srnka, D. Steffen, M. Stolarski, O. Subrt, M. Sulc, H. Suzuki, A. Szabelski, T. Szameitat, P. Sznajder, S. Takekawa, M. Tasevsky, S. Tessaro, F. Tessarotto, F. Thibaud, A. Thiel, F. Tosello, V. Tskhay, S. Uhl, J. Veloso, M. Virius, J. Vondra, S. Wallner, T. Weisrock, M. Wilfert, J. ter Wolbeek, K. Zaremba, P. Zavada, M. Zavertyaev, E. Zemlyanichkina, N. Zhuravlev, M. Ziembicki, A. Zink, Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, COMPASS, Adolph, C., Aghasyan, M., Akhunzyanov, R., Alexeev, M. G., Alexeev, G. D., Amoroso, A., Andrieux, V., Anfimov, N. V., Anosov, V., Augsten, K., Augustyniak, W., Austregesilo, A., Azevedo, C. D. R., Badełek, B., Balestra, F., Ball, M., Barth, J., Beck, R., Bedfer, Y., Bernhard, J., Bicker, K., Bielert, E. R., Birsa, R., Bodlak, M., Bordalo, P., Bradamante, F., Braun, C., Bressan, A., Büchele, M., Chang, W. -C., Chatterjee, C., Chiosso, M., Choi, I., Chung, S. -U., Cicuttin, A., Crespo, M. L., Curiel, Q., Torre, S. Dalla, Dasgupta, S. S., Dasgupta, S., Denisov, O. Yu., Dhara, L., Donskov, S. V., Doshita, N., Dreisbach, Ch., Duic, V., Dünnweber, W., Dziewiecki, M., Efremov, A., Eversheim, P. D., Eyrich, W., Faessler, M., Ferrero, A., Finger, M., Fischer, H., Franco, C., von Vijayan Hohenesche, N. du Fresne, Friedrich, J. M., Frolov, V., Fuchey, E., Gautheron, F., Gavrichtchouk, O. P., Gerassimov, S., Giarra, J., Giordano, F., Gnesi, I., Gorzellik, M., Grabmüller, S., Grasso, A., Perdekamp, M. Grosse, Grube, B., Grussenmeyer, T., Guskov, A., Haas, F., Hahne, D., Hamar, G., von Harrach, D., Heinsius, F. H., Heitz, R., Herrmann, F., Horikawa, N., D’Hose, N., Hsieh, C. -Y., Huber, S., Ishimoto, S., Ivanov, A., Ivanshin, Yu., Iwata, T., Jary, V., Joosten, R., Jörg, P., Kabuß, E., Ketzer, B., Khaustov, G. V., Khokhlov, Yu. A., Kisselev, Yu., Klein, F., Klimaszewski, K., Koivuniemi, J. H., Kolosov, V. N., Kondo, K., Königsmann, K., Konorov, I., Konstantinov, V. F., Kotzinian, A. M., Kouznetsov, O. M., Krämer, M., Kremser, P., Krinner, F., Kroumchtein, Z. V., Kulinich, Y., Kunne, F., Kurek, K., Kurjata, R. P., Lednev, A. A., Lehmann, A., Levillain, M., Levorato, S., Lian, Y. -S., Lichtenstadt, J., Longo, R., Maggiora, A., Magnon, A., Makins, N., Makke, N., Mallot, G. K., Marianski, B., Martin, A., Marzec, J., Matoušek, J., Matsuda, H., Matsuda, T., Meshcheryakov, G. V., Meyer, M., Meyer, W., Mikhailov, Yu. V., Mikhasenko, M., Mitrofanov, E., Mitrofanov, N., Miyachi, Y., Nagaytsev, A., Nerling, F., Neyret, D., Nový, J., Nowak, W. -D., Nukazuka, G., Nunes, A. S., Olshevsky, A. G., Orlov, I., Ostrick, M., Panzieri, D., Parsamyan, B., Paul, S., Peng, J. -C., Pereira, F., Pešek, M., Peshekhonov, D. V., Pierre, N., Platchkov, S., Pochodzalla, J., Polyakov, V. A., Pretz, J., Quaresma, M., Quintans, C., Ramos, S., Regali, C., Reicherz, G., Riedl, C., Roskot, M., Rossiyskaya, N. S., Ryabchikov, D. I., Rybnikov, A., Rychter, A., Salac, R., Samoylenko, V. D., Sandacz, A., Santos, C., Sarkar, S., Savin, I. A., Sawada, T., Sbrizzai, G., Schiavon, P., Schmidt, K., Schmieden, H., Schönning, K., Seder, E., Selyunin, A., Silva, L., Sinha, L., Sirtl, S., Slunecka, M., Smolik, J., Srnka, A., Steffen, D., Stolarski, M., Subrt, O., Sulc, M., Suzuki, H., Szabelski, A., Szameitat, T., Sznajder, P., Takekawa, S., Tasevsky, M., Tessaro, S., Tessarotto, F., Thibaud, F., Thiel, A., Tosello, F., Tskhay, V., Uhl, S., Veloso, J., Virius, M., Vondra, J., Wallner, S., Weisrock, T., Wilfert, M., ter Wolbeek, J., Zaremba, K., Zavada, P., Zavertyaev, M., Zemlyanichkina, E., Zhuravlev, N., Ziembicki, M., and Zink, A.
Subjects: virtual [photon], Physics and Astronomy (miscellaneous), Nuclear Theory, Hadron, 140-180 GeV/c, parton: distribution function, Virtual particle, muon deuteron: semi-inclusive reaction, hadron: transverse momentum, electroproduction [charged particle], transverse momentum dependence, COMPASS, fragmentation function, 01 natural sciences, High Energy Physics - Experiment, Subatomär fysik, High Energy Physics - Experiment (hep-ex), longitudinal spin, High Energy Physics - Phenomenology (hep-ph), semi-inclusive reaction [deep inelastic scattering], Subatomic Physics, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], polarized target: longitudinal, Nuclear Experiment, charged particle: electroproduction, transverse momentum [hadron], Physics, deep inelastic scattering: semi-inclusive reaction, hep-ph, Azimuth, High Energy Physics - Phenomenology, TMD, deuteron, modulation, Amplitude, asymmetry [angular distribution], kinematics, semi-inclusive reaction [muon deuteron], distribution function [parton], Particle Physics - Experiment, Particle physics, angular distribution: asymmetry, deep inelastic scattering [muon deuteron], longitudinal [polarized target], FOS: Physical sciences, lcsh:Astrophysics, muon deuteron: deep inelastic scattering, Computer Science::Digital Libraries, energy dependence, x-dependence, lcsh:QB460-466, 0103 physical sciences, lcsh:Nuclear and particle physics. Atomic energy. Radioactivity, ddc:530, 010306 general physics, Engineering (miscellaneous), Particle Physics - Phenomenology, Muon, hep-ex, 010308 nuclear & particles physics, Scattering, High Energy Physics::Phenomenology, Charge (physics), CERN SPS, Deep inelastic scattering, [PHYS.HPHE]Physics [physics]/High Energy Physics - Phenomenology [hep-ph], fractional, lcsh:QC770-798, High Energy Physics::Experiment, photon: virtual, experimental results
Abstract: Single hadron azimuthal asymmetries of positive and negative hadrons produced in muon semi-inclusive deep inelastic scattering off longitudinally polarised deuterons are determined using the 2006 COMPASS data and also combined all deuteron COMPASS data. For each hadron charge, the dependence of the azimuthal asymmetry on the hadron azimuthal angle $\phi$ is obtained by means of a five-parameter fitting function that besides a $\phi$-independent term includes four modulations predicted by theory: $\sin\phi$, $\sin 2 \phi$, $\sin 3\phi$ and $\cos\phi$. The amplitudes of the five terms have been extracted, first, for the hadrons in the whole available kinematic region. In further fits, performed for hadrons from a restricted kinematic region, the $\phi$-dependence is determined as a function of one of three variables (Bjorken-$x$, fractional energy of virtual photon taken by the outgoing hadron and hadron transverse momentum), while disregarding the others. Except the $\phi$-independent term, all the modulation amplitudes are very small, and no clear kinematic dependence could be observed within experimental uncertainties., Comment: 15 pages, 5 figures
Published: 2018

38. Sivers asymmetry extracted in SIDIS at the hard scales of the Drell-Yan process at COMPASS

Author: V. Andrieux, S. Grabmüller, Adam Szabelski, Alexandr Selyunin, W. Eyrich, K. Schmidt, Andrea Ferrero, Nour Makke, W. C. Chang, P. Kremser, M. Aghasyan, D.I. Ryabchikov, Jen-Chieh Peng, Norihiro Doshita, J. Pochodzalla, A. Nagaytsev, F. Balestra, A. Rychter, N. Pierre, W. Augustyniak, N. d'Hose, R. Longo, A. Thiel, V.N. Kolosov, P. Sznajder, K. Schönning, D. Steffen, J. Smolik, Miroslav Sulc, M. Tasevsky, E. Mitrofanov, P. Schiavon, O. Subrt, A. Lehmann, Q. Curiel, Andrew Ivanov, G. Nukazuka, D. von Harrach, C. Adolph, N.S. Rossiyskaya, F. Giordano, H. Matsuda, K. Klimaszewski, E. Seder, Celso Augusto Guimarães Santos, S. Gerassimov, Frank Klein, N. Horikawa, Y. Miyachi, A.A. Lednev, Yakov Petrovich Kulinich, Andres Cicuttin, I. Orlov, V.D. Samoylenko, P. Jörg, G. Reicherz, K. Königsmann, M. Slunecka, A. Magnon, O.P. Gavrichtchouk, Martin Bodlak, L. Sinha, S. Ramos, S. Dalla Torre, F. Tosello, S. Tessaro, V. Tskhay, S. Levorato, M. Wilfert, T. Matsuda, A. Zink, D. Hahne, D.V. Peshekhonov, Markus Ball, A. Sandacz, N. Mitrofanov, M. Finger, M. Ziembicki, K. Bicker, C. Franco, Yu. Ivanshin, A. Grasso, P. Bordalo, Takahiro Iwata, C. Regali, Yu.A. Khokhlov, L. Dhara, S.S. Dasgupta, M. Meyer, S. Platchkov, P. Zavada, G. Hamar, N. I. Zhuravlev, Federica Sozzi, F. H. Heinsius, Johannes Bernhard, Ch. Dreisbach, A. Guskov, M. Stolarski, W. Meyer, Maria Liz Crespo, C. Braun, B. Badelek, M. Grosse Perdekamp, A.V. Efremov, J. Vondra, M.G. Alexeev, M. V. Zavertyaev, Y.-S. Lian, I. Gnesi, F. Thibaud, J. Barth, F. Nerling, Mikhail Mikhasenko, B. Ketzer, Andrea Bressan, V. Jary, S. Uhl, J. Giarra, S. Takekawa, F. Pereira, Gerhard K. Mallot, Michal Dziewiecki, B. Grube, I. Konorov, F. Haas, C. Elia, G.V. Khaustov, R. Birsa, N. C. R. Makins, J. Lichtenstadt, M. Quaresma, J. Pretz, Alan D. Martin, H. Schmieden, Yu. Kisselev, Z.V. Kroumchtein, R. Salac, N. du Fresne von Hohenesche, T. Weisrock, J.M. Friedrich, E. Fuchey, Aram Kotzinian, C. Riedl, F. Kunne, D. Neyret, M. Ostrick, R.P. Kurjata, K. Zaremba, E.R. Bielert, Franco Bradamante, S. Huber, J.F.C.A. Veloso, S. Dasgupta, M. Virius, A. Maggiora, E. Zemlyanichkina, J. ter Wolbeek, A. Austregesilo, Jan Matousek, O.M. Kouznetsov, A. Srnka, V.A. Polyakov, M. Büchele, Arseniy Rybnikov, F. Krinner, J.H. Koivuniemi, V. Duic, W.-D. Nowak, J. Nový, G. Sbrizzai, A. Amoroso, T. Sawada, S.-U. Chung, M. Chiosso, M. Krämer, K. Kurek, M. Gorzellik, Nikolay Anfimov, François Herrmann, M. Faessler, R. Joosten, P.D. Eversheim, H. Suzuki, C.D.R. Azevedo, K. Kondo, Y. Bedfer, C. Chatterjee, Kamil Augsten, E. M. Kabuß, C. Quintans, I.A. Savin, S. Sarkar, S. V. Donskov, M. Pešek, A.S. Nunes, D. Panzieri, Janusz Marzec, T. Grussenmeyer, T. Szameitat, B. Marianski, Bakur Parsamyan, V.F. Konstantinov, S. Wallner, S. Ishimoto, H. Fischer, A.G. Olshevsky, Fabrice Gautheron, R. Akhunzyanov, G. D. Alexeev, W. Dünnweber, R. Heitz, V. Anosov, G.V. Meshcheryakov, Yu. V. Mikhailov, S. Sirtl, O.Yu. Denisov, F. Tessarotto, Laura Gonzalez Silva, M. Levillain, C.-Y. Hsieh, V. Frolov, Soumen Paul, M. Roskot, R. Beck, I. J. Choi, Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, COMPASS, Adolph, C., Aghasyan, M., Akhunzyanov, R., Alexeev, M. G., Alexeev, G. D., Amoroso, A., Andrieux, V., Anfimov, N. V., Anosov, V., Augsten, K., Augustyniak, W., Austregesilo, A., Azevedo, C. D. R., Badełek, B., Balestra, F., Ball, M., Barth, J., Beck, R., Bedfer, Y., Bernhard, J., Bicker, K., Bielert, E. R., Birsa, R., Bodlak, M., Bordalo, P., Bradamante, F., Braun, C., Bressan, Andrea, Büchele, M., Chang, W. C., Chatterjee, Chandradoy, Chiosso, M., Choi, I., Chung, S. U., Cicuttin, A., Crespo, M. L., Curiel, Q., Dalla Torre, S., Dasgupta, SHUDDHA SHANKAR, Dasgupta, S., Denisov, O. Y. u., Dhara, L., Donskov, S. V., Doshita, N., Dreisbach, C. h., Duic, Venicio, Dünnweber, W., Dziewiecki, M., Efremov, A., Eversheim, P. D., Eyrich, W., Faessler, M., Ferrero, A., Finger, M., Fischer, H., Franco, C., du Fresne von Hohenesche, N., Friedrich, J. M., Frolov, V., Fuchey, E., Gautheron, F., Gavrichtchouk, O. P., Gerassimov, S., Giarra, J., Giordano, F., Gnesi, I., Gorzellik, M., Grabmüller, S., Grasso, A., Grosse Perdekamp, M., Grube, B., Grussenmeyer, T., Guskov, A., Haas, F., Hahne, D., Hamar, G., von Harrach, D., Heinsius, F. H., Heitz, R., Herrmann, F., Horikawa, N., D'Hose, N., Hsieh, C. Y., Huber, S., Ishimoto, S., Ivanov, A., Ivanshin, Y. u., Iwata, T., Jary, V., Joosten, R., Jörg, P., Kabuß, E., Ketzer, B., Khaustov, G. V., Khokhlov, Y. u. A., Kisselev, Y. u., Klein, F., Klimaszewski, K., Koivuniemi, J. H., Kolosov, V. N., Kondo, K., Königsmann, K., Konorov, I., Konstantinov, V. F., Kotzinian, A. M., Kouznetsov, O. M., Krämer, M., Kremser, P., Krinner, F., Kroumchtein, Z. V., Kulinich, Y., Kunne, F., Kurek, K., Kurjata, R. P., Lednev, A. A., Lehmann, A., Levillain, M., Levorato, Stefano, Lian, Y. S., Lichtenstadt, J., Longo, R., Maggiora, A., Magnon, A., Makins, N., Makke, Nour, Mallot, G. K., Marianski, B., Martin, Anna, Marzec, J., Matousek, Jan, Matsuda, H., Matsuda, T., Meshcheryakov, G. V., Meyer, M., Meyer, W., Mikhailov, Y. u. V., Mikhasenko, M., Mitrofanov, E., Mitrofanov, N., Miyachi, Y., Nagaytsev, A., Nerling, F., Neyret, D., Nový, J., Nowak, W. D., Nukazuka, G., Nunes, A. S., Olshevsky, A. G., Orlov, I., Ostrick, M., Panzieri, D., Parsamyan, B., Paul, S., Peng, J. C., Pereira, F., Pešek, M., Peshekhonov, D. V., Pierre, N., Platchkov, S., Pochodzalla, J., Polyakov, V. A., Pretz, J., Quaresma, M., Quintans, C., Ramos, S., Regali, C., Reicherz, G., Riedl, C., Roskot, M., Rossiyskaya, N. S., Ryabchikov, D. I., Rybnikov, A., Rychter, A., Salac, R., Samoylenko, V. D., Sandacz, A., Santos, C., Sarkar, S., Savin, I. A., Sawada, T., Sbrizzai, Giulio, Schiavon, Paolo, Schmidt, K., Schmieden, H., Schönning, K., Seder, E., Selyunin, A., Silva, L., Sinha, L., Sirtl, S., Slunecka, M., Smolik, J., Srnka, A., Steffen, D., Stolarski, M., Subrt, O., Sulc, M., Suzuki, H., Szabelski, Adam, Szameitat, T., Sznajder, P., Takekawa, Stefano, Tasevsky, M., Tessaro, Susanna, Tessarotto, F., Thibaud, F., Thiel, A., Tosello, F., Tskhay, V., Uhl, S., Veloso, J., Virius, M., Vondra, J., Wallner, S., Weisrock, T., Wilfert, M., ter Wolbeek, J., Zaremba, K., Zavada, P., Zavertyaev, M., Zemlyanichkina, E., Zhuravlev, N., Ziembicki, M., Zink, A., Institut de Recherches sur les lois Fondamentales de l'Univers ( IRFU ), and Commissariat à l'énergie atomique et aux énergies alternatives ( CEA ) -Université Paris-Saclay
Subjects: Drellâ Yan, Drell-Yan process, Photon, Hadron, parton: distribution function, Drell-Yan, Parton, transverse momentum dependence, 01 natural sciences, COMPASS, SIDIS, High Energy Physics - Experiment, Sivers function, Subatomär fysik, High Energy Physics - Experiment (hep-ex), High Energy Physics - Phenomenology (hep-ph), Compass, Subatomic Physics, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], dimension: 2, Nuclear Experiment, Drell–Yan, Spin, Azimuthal asymmetries, Sivers, TMDs, media_common, Physics, Quantum chromodynamics, deep inelastic scattering: semi-inclusive reaction, polarized target: transverse, photon, Drell–Yan process, hep-ph, lcsh:QC1-999, Azimuthal asymmetrie, High Energy Physics - Phenomenology, kinematics, Siver, polarized beam: longitudinal, Nucleon, spin: asymmetry, Particle Physics - Experiment, Particle physics, Nuclear and High Energy Physics, angular distribution: asymmetry, media_common.quotation_subject, FOS: Physical sciences, Asymmetry, Nuclear physics, [ PHYS.HEXP ] Physics [physics]/High Energy Physics - Experiment [hep-ex], DrellâYan, 0103 physical sciences, muon nucleon: deep inelastic scattering, quantum chromodynamics, muon nucleon: scattering, 010306 general physics, Particle Physics - Phenomenology, nucleon: transverse momentum, 010308 nuclear & particles physics, 160 GeV/c, hep-ex, CERN SPS, muon+ p: deep inelastic scattering, [PHYS.HPHE]Physics [physics]/High Energy Physics - Phenomenology [hep-ph], [ PHYS.HPHE ] Physics [physics]/High Energy Physics - Phenomenology [hep-ph], High Energy Physics::Experiment, lcsh:Physics, experimental results
Abstract: Proton transverse-spin azimuthal asymmetries are extracted from the COMPASS 2010 semi-inclusive hadron measurements in deep inelastic muon-nucleon scattering in those four regions of the photon virtuality $Q^2$, which correspond to the four regions of the di-muon mass $\sqrt{Q^2}$ used in the ongoing analysis of the COMPASS Drell-Yan measurements. This allows for a future direct comparison of the nucleon transverse-momentum-dependent parton distribution functions extracted from these two alternative measurements. Various two-dimensional kinematic dependences are presented for the azimuthal asymmetries induced by the Sivers transverse-momentum-dependent parton distribution function. The integrated Sivers asymmetries are found to be positive with an accuracy that appears to be sufficient to test the sign change of the Sivers function predicted by Quantum Chromodynamics., 13 pages, 6 figures
Published: 2017

39. First measurement of the Sivers asymmetry for gluons using SIDIS data

Author: S. V. Donskov, O.Yu. Denisov, M. Pešek, C. Regali, K. Königsmann, Aram Kotzinian, A.S. Nunes, D.V. Peshekhonov, D. Panzieri, Janusz Marzec, T. Grussenmeyer, P.D. Eversheim, R. Beck, A. Kerbizi, M. Wilfert, J. ter Wolbeek, H. Suzuki, C.D.R. Azevedo, A. Maggiora, G.V. Meshcheryakov, Yu. V. Mikhailov, S. Sirtl, C. Adolph, Arseniy Rybnikov, S. Gerassimov, N. Horikawa, F. Giordano, A. Grasso, W.-D. Nowak, F. Tosello, S. Tessaro, F. Tessarotto, Laura Gonzalez Silva, Yu. Kisselev, D. Hahne, J. Nový, R. Salac, M. Ostrick, M. Stolarski, I. Gnesi, Andrew Ivanov, E.R. Bielert, A.G. Olshevsky, F. Krinner, A. Rychter, S.S. Dasgupta, R. Akhunzyanov, Yu.A. Khokhlov, T. Szameitat, R. Longo, G. Nukazuka, P. Kremser, G. D. Alexeev, D.I. Ryabchikov, W. Dünnweber, M. Levillain, C.-Y. Hsieh, S.-U. Chung, E. Seder, M. Krämer, V. Frolov, Soumen Paul, M. V. Zavertyaev, V. Anosov, Franco Bradamante, D. von Harrach, V.N. Kolosov, K. Schönning, F. Thibaud, J. Barth, Celso Augusto Guimarães Santos, M. Ziembicki, T. Sawada, I. J. Choi, E. M. Kabuß, A. Magnon, C. Quintans, M. Tasevsky, Gerhard K. Mallot, E. Mitrofanov, R. Heitz, Miroslav Sulc, I.A. Savin, P. Schiavon, F. H. Heinsius, O.P. Gavrichtchouk, M. Chiosso, Martin Bodlak, L. Sinha, François Herrmann, T. Weisrock, T. Matsuda, A. Zink, Takahiro Iwata, G.V. Khaustov, Fabrice Gautheron, H. Matsuda, V. Tskhay, Alexandr Selyunin, N.S. Rogacheva, K. Kurek, V. Andrieux, Adam Szabelski, M. Meyer, L. Dhara, C. Braun, B. Marianski, M. Grosse Perdekamp, M.G. Alexeev, A.V. Efremov, B. Badelek, S. Uhl, A. Vauth, F. Kunne, Bakur Parsamyan, W. Eyrich, Nour Makke, J. Giarra, W. C. Chang, S. Grabmüller, Michal Dziewiecki, B. Ketzer, M. Roskot, S. Takekawa, Anne-Laure Martin, F. Pereira, A. Antoshkin, S. Platchkov, P. Zavada, H. Schmieden, J.M. Friedrich, W. Meyer, Maria Liz Crespo, J. Pretz, K. Zaremba, M. Slunecka, V.A. Polyakov, S. Huber, V. Jary, V.F. Konstantinov, M. Gorzellik, S. Wallner, S. Ishimoto, Kamil Augsten, E. Zemlyanichkina, H. Fischer, M. Aghasyan, G. Sbrizzai, Johannes Bernhard, Ch. Dreisbach, P. Bordalo, A. Guskov, A. Amoroso, J. Pochodzalla, Yakov Petrovich Kulinich, Andrea Bressan, A. Nagaytsev, N. du Fresne von Hohenesche, F. Balestra, N. I. Zhuravlev, N. Pierre, M. Finger, F. Haas, N. C. R. Makins, K. Bicker, E. Fuchey, R. Birsa, J. Lichtenstadt, C. Riedl, Jan Matousek, M. Quaresma, D. Neyret, Nikolay Anfimov, R. Joosten, S. Dasgupta, J. Vondra, A. Austregesilo, Y.-S. Lian, J.F.C.A. Veloso, K. Kondo, Y. Bedfer, O.M. Kouznetsov, A. Srnka, C. Chatterjee, Z.V. Kroumchtein, V. Duic, W. Augustyniak, S. Ramos, K. Schmidt, P. Sznajder, Andrea Ferrero, Norihiro Doshita, N. d'Hose, D. Steffen, J. Smolik, O. Subrt, A. Lehmann, A. Thiel, Q. Curiel, K. Klimaszewski, Y. Miyachi, A.A. Lednev, Andres Cicuttin, I. Orlov, V.D. Samoylenko, G. Reicherz, S. Dalla Torre, Frank Klein, I. Konorov, A. Sandacz, C. Franco, Jen-Chieh Peng, Markus Ball, Yu. Ivanshin, F. Nerling, G. Hamar, M. Büchele, Mikhail Mikhasenko, M. Faessler, J.H. Koivuniemi, B. Grube, R.P. Kurjata, M. Virius, P. Jörg, S. Levorato, N. Mitrofanov, S. Sarkar, Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, AstroParticule et Cosmologie (APC (UMR_7164)), Observatoire de Paris, PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), COMPASS, Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Université de Paris (UP), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Observatoire de Paris, PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7), Institut de Recherches sur les lois Fondamentales de l'Univers ( IRFU ), Commissariat à l'énergie atomique et aux énergies alternatives ( CEA ) -Université Paris-Saclay, AstroParticule et Cosmologie ( APC - UMR 7164 ), Centre National de la Recherche Scientifique ( CNRS ) -Institut National de Physique Nucléaire et de Physique des Particules du CNRS ( IN2P3 ) -Observatoire de Paris-Université Paris Diderot - Paris 7 ( UPD7 ) -Commissariat à l'énergie atomique et aux énergies alternatives ( CEA ), Adolph, C., Aghasyan, M., Akhunzyanov, R., Alexeev, M. G., Alexeev, G. D., Amoroso, A., Andrieux, V., Anfimov, N. V., Anosov, V., Antoshkin, A., Augsten, K., Augustyniak, W., Austregesilo, A., Azevedo, C. D. R., BadeÅ‚ek, B., Balestra, F., Ball, M., Barth, J., Beck, R., Bedfer, Y., Bernhard, J., Bicker, K., Bielert, E. R., Birsa, R., Bodlak, M., Bordalo, P., Bradamante, F., Braun, C., Bressan, A., Bã¼chele, M., Chang, W. -. C., Chatterjee, C., Chiosso, M., Choi, I., Chung, S. -. U., Cicuttin, A., Crespo, M. L., Curiel, Q., Dalla Torre, S., Dasgupta, S. S., Dasgupta, S., Denisov, O. Y. u., Dhara, L., Donskov, S. V., Doshita, N., Dreisbach, C. h., Duic, V., Quintans, C., Dziewiecki, M., Efremov, A., Eversheim, P. D., Eyrich, W., Ramos, S., Ferrero, A., Finger, M., Fischer, H., Franco, C., du Fresne von Hohenesche, N., Friedrich, J. M., Frolov, V., Fuchey, E., Gautheron, F., Gavrichtchouk, O. P., Gerassimov, S., Giarra, J., Giordano, F., Gnesi, I., Gorzellik, M., Grabmã¼ller, S., Grasso, A., Grosse Perdekamp, M., Grube, B., Grussenmeyer, T., Guskov, A., Haas, F., Hahne, D., Hamar, G., von Harrach, D., Heinsius, F. H., Heitz, R., Herrmann, F., Horikawa, N., D'Hose, N., Hsieh, C. -. Y., Huber, S., Ishimoto, S., Ivanov, A., Ivanshin, Y. u., Iwata, T., Jary, V., Joosten, R., Jã¶rg, P., Kabuãÿ, E., Kerbizi, A., Ketzer, B., Khaustov, G. V., Khokhlov, Y. u. A., Kisselev, Y. u., Klein, F., Klimaszewski, K., Koivuniemi, J. H., Kolosov, V. N., Kondo, K., Kã¶nigsmann, K., Konorov, I., Konstantinov, V. F., Kotzinian, A. M., Kouznetsov, O. M., Krã¤mer, M., Kremser, P., Krinner, F., Kroumchtein, Z. V., Kulinich, Y., Kunne, F., Kurek, K., Kurjata, R. P., Lednev, A. A., Lehmann, A., Levillain, M., Levorato, S., Lian, Y. -. S., Lichtenstadt, J., Longo, R., Maggiora, A., Magnon, A., Makins, N., Makke, N., Mallot, G. K., Marianski, B., Martin, A., Marzec, J., Matouå¡ek, J., Matsuda, H., Matsuda, T., Meshcheryakov, G. V., Meyer, M., Meyer, W., Mikhailov, Y. u. V., Mikhasenko, M., Mitrofanov, E., Mitrofanov, N., Miyachi, Y., Nagaytsev, A., Nerling, F., Neyret, D., Novã½, J., Nowak, W. -. D., Nukazuka, G., Nunes, A. S., Olshevsky, A. G., Orlov, I., Ostrick, M., Panzieri, D., Parsamyan, B., Paul, S., Peng, J. -. C., Pereira, F., Peå¡ek, M., Peshekhonov, D. V., Pierre, N., Platchkov, S., Pochodzalla, J., Polyakov, V. A., Pretz, J., Quaresma, M., Ziembicki, M., Zink, A., Regali, C., Reicherz, G., Riedl, C., Roskot, M., Rogacheva, N. S., Ryabchikov, D. I., Rybnikov, A., Rychter, A., Salac, R., Samoylenko, V. D., Sandacz, A., Santos, C., Sarkar, S., Savin, I. A., Sawada, T., Sbrizzai, G., Schiavon, P., Schmidt, K., Schmieden, H., Schã¶nning, K., Seder, E., Selyunin, A., Silva, L., Sinha, L., Sirtl, S., Slunecka, M., Smolik, J., Srnka, A., Steffen, D., Stolarski, M., Subrt, O., Sulc, M., Suzuki, H., Szabelski, A., Szameitat, T., Sznajder, P., Takekawa, S., Tasevsky, M., Tessaro, S., Tessarotto, F., Thibaud, F., Thiel, A., Tosello, F., Tskhay, V., Uhl, S., Vauth, A., Veloso, J., Virius, M., Vondra, J., Wallner, S., Weisrock, T., Wilfert, M., ter Wolbeek, J., Zaremba, K., Zavada, P., Zavertyaev, M., Zemlyanichkina, E., and Zhuravlev, N.
Subjects: hadron: angular distribution, muon+: polarized beam, Nuclear Theory, Parton, muon+ deuteron: deep inelastic scattering, hadron: transverse momentum, transverse momentum dependence, 01 natural sciences, COMPASS, High Energy Physics - Experiment, Subatomär fysik, Sivers function, High Energy Physics - Experiment (hep-ex), High Energy Physics - Phenomenology (hep-ph), photon gluon: fusion, Subatomic Physics, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], parton, Nuclear Experiment, media_common, Quantum chromodynamics, Physics, gluon: distribution function, deep inelastic scattering: semi-inclusive reaction, higher-order: 0, polarized target: transverse, hep-ph, Deep inelastic scattering, Gluon, PDF, Sivers, TMD, Nuclear and High Energy Physics, lcsh:QC1-999, High Energy Physics - Phenomenology, Siver, effect: Collins, Nucleon, Compton scattering, numerical calculations: Monte Carlo, spin: asymmetry, Particle Physics - Experiment, Quark, Particle physics, data analysis method, deuteron: polarized target, hadron: asymmetry, angular distribution: asymmetry, neural network, media_common.quotation_subject, polarization: longitudinal, FOS: Physical sciences, Asymmetry, Nuclear physics, [ PHYS.HEXP ] Physics [physics]/High Energy Physics - Experiment [hep-ex], 0103 physical sciences, quantum chromodynamics, 010306 general physics, Particle Physics - Phenomenology, 010308 nuclear & particles physics, hep-ex, 160 GeV/c, High Energy Physics::Phenomenology, nucleon: spin: transverse, CERN SPS, muon+ p: deep inelastic scattering, correlation, [PHYS.HPHE]Physics [physics]/High Energy Physics - Phenomenology [hep-ph], [ PHYS.HPHE ] Physics [physics]/High Energy Physics - Phenomenology [hep-ph], High Energy Physics::Experiment, absorption, lcsh:Physics, Lepton, experimental results
Abstract: The Sivers function describes the correlation between the transverse spin of a nucleon and the transverse motion of its partons. It was extracted from measurements of the azimuthal asymmetry of hadrons produced in semi-inclusive deep inelastic scattering of leptons off transversely polarised nucleon targets, and it turned out to be non-zero for quarks. In this letter the evaluation of the Sivers asymmetry for gluons in the same process is presented. The analysis method is based on a Monte Carlo simulation that includes three hard processes: photon-gluon fusion, QCD Compton scattering and leading-order virtual-photon absorption process. The Sivers asymmetries of the three processes are simultaneously extracted using the LEPTO event generator and a neural network approach. The method is applied to samples of events containing at least two hadrons with large transverse momentum from the COMPASS data taken with a 160 GeV/$c$ muon beam scattered off transversely polarised deuterons and protons. With a significance of more than two standard deviations a negative value is obtained for the gluon Sivers asymmetry. The result of a similar analysis for a Collins-like asymmetry for gluons is consistent with zero., Comment: 18 pages, 8 figures
Published: 2017

40. Leading-order determination of the gluon polarisation from semi-inclusive deep inelastic scattering data

Author: C. Adolph, M. Aghasyan, R. Akhunzyanov, M. G. Alexeev, G. D. Alexeev, A. Amoroso, V. Andrieux, N. V. Anfimov, V. Anosov, W. Augustyniak, A. Austregesilo, C. D. R. Azevedo, B. Badełek, F. Balestra, J. Barth, R. Beck, Y. Bedfer, J. Bernhard, K. Bicker, E. R. Bielert, R. Birsa, J. Bisplinghoff, M. Bodlak, M. Boer, P. Bordalo, F. Bradamante, C. Braun, A. Bressan, M. Büchele, W.-C. Chang, M. Chiosso, I. Choi, S.-U. Chung, A. Cicuttin, M. L. Crespo, Q. Curiel, S. Dalla Torre, S. S. Dasgupta, S. Dasgupta, O. Yu. Denisov, L. Dhara, S. V. Donskov, N. Doshita, V. Duic, W. Dünnweber, M. Dziewiecki, A. Efremov, P. D. Eversheim, W. Eyrich, M. Faessler, A. Ferrero, M. Finger, M. Finger jr., H. Fischer, C. Franco, N. du Fresne von Hohenesche, J. M. Friedrich, V. Frolov, E. Fuchey, F. Gautheron, O. P. Gavrichtchouk, S. Gerassimov, F. Giordano, I. Gnesi, M. Gorzellik, S. Grabmüller, A. Grasso, M. Grosse Perdekamp, B. Grube, T. Grussenmeyer, A. Guskov, F. Haas, D. Hahne, D. von Harrach, R. Hashimoto, F. H. Heinsius, R. Heitz, F. Herrmann, F. Hinterberger, N. Horikawa, N. d’Hose, C.-Y. Hsieh, S. Huber, S. Ishimoto, A. Ivanov, Yu. Ivanshin, T. Iwata, R. Jahn, V. Jary, R. Joosten, P. Jörg, E. Kabuß, B. Ketzer, G. V. Khaustov, Yu. A. Khokhlov, Yu. Kisselev, F. Klein, K. Klimaszewski, J. H. Koivuniemi, V. N. Kolosov, K. Kondo, K. Königsmann, I. Konorov, V. F. Konstantinov, A. M. Kotzinian, O. M. Kouznetsov, M. Krämer, P. Kremser, F. Krinner, Z. V. Kroumchtein, Y. Kulinich, F. Kunne, K. Kurek, R. P. Kurjata, A. A. Lednev, A. Lehmann, M. Levillain, S. Levorato, J. Lichtenstadt, R. Longo, A. Maggiora, A. Magnon, N. Makins, N. Makke, G. K. Mallot, C. Marchand, B. Marianski, A. Martin, J. Marzec, J. Matoušek, H. Matsuda, T. Matsuda, G. V. Meshcheryakov, W. Meyer, T. Michigami, Yu. V. Mikhailov, M. Mikhasenko, Y. Miyachi, P. Montuenga, A. Nagaytsev, F. Nerling, D. Neyret, V. I. Nikolaenko, J. Nový, W.-D. Nowak, G. Nukazuka, A. S. Nunes, A. G. Olshevsky, I. Orlov, M. Ostrick, D. Panzieri, B. Parsamyan, S. Paul, J.-C. Peng, F. Pereira, M. Pešek, D. V. Peshekhonov, S. Platchkov, J. Pochodzalla, V. A. Polyakov, J. Pretz, M. Quaresma, C. Quintans, S. Ramos, C. Regali, G. Reicherz, C. Riedl, M. Roskot, N. S. Rossiyskaya, D. I. Ryabchikov, A. Rybnikov, A. Rychter, R. Salac, V. D. Samoylenko, A. Sandacz, C. Santos, S. Sarkar, I. A. Savin, T. Sawada, G. Sbrizzai, P. Schiavon, K. Schmidt, H. Schmieden, K. Schönning, S. Schopferer, E. Seder, A. Selyunin, O. Yu. Shevchenko, L. Silva, L. Sinha, S. Sirtl, M. Slunecka, J. Smolik, F. Sozzi, A. Srnka, M. Stolarski, M. Sulc, H. Suzuki, A. Szabelski, T. Szameitat, P. Sznajder, S. Takekawa, M. Tasevsky, S. Tessaro, F. Tessarotto, F. Thibaud, F. Tosello, V. Tskhay, S. Uhl, J. Veloso, M. Virius, J. Vondra, T. Weisrock, M. Wilfert, J. ter Wolbeek, K. Zaremba, P. Zavada, M. Zavertyaev, E. Zemlyanichkina, M. Ziembicki, A. Zink, COMPASS Collaboration, Département de Physique Nucléaire (ex SPhN) (DPHN), Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, COMPASS, Département de Physique Nucléaire (ex SPhN) ( DPHN ), Institut de Recherches sur les lois Fondamentales de l'Univers ( IRFU ), Commissariat à l'énergie atomique et aux énergies alternatives ( CEA ) -Université Paris-Saclay-Commissariat à l'énergie atomique et aux énergies alternatives ( CEA ) -Université Paris-Saclay, Adolph, C., Aghasyan, M., Akhunzyanov, R., Alexeev, M. G., Alexeev, G. D., Amoroso, A., Andrieux, V., Anfimov, N. V., Anosov, V., Augustyniak, W., Austregesilo, A., Azevedo, C. D. R., Badełek, B., Balestra, F., Barth, J., Beck, R., Bedfer, Y., Bernhard, J., Bicker, K., Bielert, E. R., Birsa, R., Bisplinghoff, J., Bodlak, M., Boer, M., Bordalo, P., Bradamante, F., Braun, C., Bressan, A., Büchele, M., Chang, W. -C., Chiosso, M., Choi, I., Chung, S. -U., Cicuttin, A., Crespo, M. L., Curiel, Q., Dalla Torre, S., Dasgupta, S. S., Dasgupta, S., Denisov, O. Yu., Dhara, L., Donskov, S. V., Doshita, N., Duic, V., Dünnweber, W., Dziewiecki, M., Efremov, A., Eversheim, P. D., Eyrich, W., Faessler, M., Ferrero, A., Finger, M., Jr, M. Finger, Fischer, H., Franco, C., du Fresne von Hohenesche, N., Friedrich, J. M., Frolov, V., Fuchey, E., Gautheron, F., Gavrichtchouk, O. P., Gerassimov, S., Giordano, F., Gnesi, I., Gorzellik, M., Grabmüller, S., Grasso, A., Grosse Perdekamp, M., Grube, B., Grussenmeyer, T., Guskov, A., Haas, F., Hahne, D., von Harrach, D., Hashimoto, R., Heinsius, F. H., Heitz, R., Herrmann, F., Hinterberger, F., Horikawa, N., D’Hose, N., Hsieh, C. -Y., Huber, S., Ishimoto, S., Ivanov, A., Ivanshin, Yu., Iwata, T., Jahn, R., Jary, V., Joosten, R., Jörg, P., Kabuß, E., Ketzer, B., Khaustov, G. V., Khokhlov, Yu. A., Kisselev, Yu., Klein, F., Klimaszewski, K., Koivuniemi, J. H., Kolosov, V. N., Kondo, K., Königsmann, K., Konorov, I., Konstantinov, V. F., Kotzinian, A. M., Kouznetsov, O. M., Krämer, M., Kremser, P., Krinner, F., Kroumchtein, Z. V., Kulinich, Y., Kunne, F., Kurek, K., Kurjata, R. P., Lednev, A. A., Lehmann, A., Levillain, M., Levorato, S., Lichtenstadt, J., Longo, R., Maggiora, A., Magnon, A., Makins, N., Makke, N., Mallot, G. K., Marchand, C., Marianski, B., Martin, A., Marzec, J., Matoušek, J., Matsuda, H., Matsuda, T., Meshcheryakov, G. V., Meyer, W., Michigami, T., Mikhailov, Yu. V., Mikhasenko, M., Miyachi, Y., Montuenga, P., Nagaytsev, A., Nerling, F., Neyret, D., Nikolaenko, V. I., Nový, J., Nowak, W. -D., Nukazuka, G., Nunes, A. S., Olshevsky, A. G., Orlov, I., Ostrick, M., Panzieri, D., Parsamyan, B., Paul, S., Peng, J. -C., Pereira, F., Pešek, M., Peshekhonov, D. V., Platchkov, S., Pochodzalla, J., Polyakov, V. A., Pretz, J., Quaresma, M., Quintans, C., Ramos, S., Regali, C., Reicherz, G., Riedl, C., Roskot, M., Rossiyskaya, N. S., Ryabchikov, D. I., Rybnikov, A., Rychter, A., Salac, R., Samoylenko, V. D., Sandacz, A., Santos, C., Sarkar, S., Savin, I. A., Sawada, T., Sbrizzai, G., Schiavon, P., Schmidt, K., Schmieden, H., Schönning, K., Schopferer, S., Seder, E., Selyunin, A., Shevchenko, O. Yu., Silva, L., Sinha, L., Sirtl, S., Slunecka, M., Smolik, J., Sozzi, F., Srnka, A., Stolarski, M., Sulc, M., Suzuki, H., Szabelski, A., Szameitat, T., Sznajder, P., Takekawa, S., Tasevsky, M., Tessaro, S., Tessarotto, F., Thibaud, F., Tosello, F., Tskhay, V., Uhl, S., Veloso, J., Virius, M., Vondra, J., Weisrock, T., Wilfert, M., ter Wolbeek, J., Zaremba, K., Zavada, P., Zavertyaev, M., Zemlyanichkina, E., Ziembicki, M., and Zink, A.
Subjects: muon+: polarized beam, Physics and Astronomy (miscellaneous), Nuclear Theory, inclusive reaction [muon nucleus], photoproduction [hadron], hadron: transverse momentum, transverse momentum dependence, COMPASS, Systematic Uncertainty, High Energy Physics - Experiment, Subatomär fysik, High Energy Physics - Experiment (hep-ex), High Energy Physics - Phenomenology (hep-ph), Subatomic Physics, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], Nuclear Experiment, Monte Carlo, transverse momentum [hadron], hep-ph, polarization [gluon], hadron: photoproduction, semi-inclusive reaction, High Energy Physics - Phenomenology, beam: scattering, spin: asymmetry, Particle Physics - Experiment, data analysis method, CERN Lab, neural network, polarization: longitudinal, FOS: Physical sciences, lcsh:Astrophysics, gluon: polarization, Monte Carlo Model, nucleon: momentum, momentum [nucleon], polarized beam [muon+], [ PHYS.HEXP ] Physics [physics]/High Energy Physics - Experiment [hep-ex], Transverse Momentum, lcsh:QB460-466, lcsh:Nuclear and particle physics. Atomic energy. Radioactivity, ddc:530, Engineering (miscellaneous), Particle Physics - Phenomenology, longitudinal [polarization], hep-ex, 160 GeV/c, High Energy Physics::Phenomenology, CERN SPS, Parton Shower, muon nucleus: inclusive reaction, [PHYS.HPHE]Physics [physics]/High Energy Physics - Phenomenology [hep-ph], lcsh:QC770-798, [ PHYS.HPHE ] Physics [physics]/High Energy Physics - Phenomenology [hep-ph], High Energy Physics::Experiment, asymmetry [spin], scattering [beam], experimental results
Abstract: Using a novel analysis technique, the gluon polarisation in the nucleon is re-evaluated using the longitudinal double-spin asymmetry measured in the cross section of semi-inclusive single-hadron muoproduction with photon virtuality $Q^2>1~({\rm GeV}/c)^2$. The data were obtained by the COMPASS experiment at CERN using a 160 GeV/$c$ polarised muon beam impinging on a polarised $^6$LiD target. By analysing the full range in hadron transverse momentum $p_{\rm T}$, the different $p_{\rm T}$-dependences of the underlying processes are separated using a neural-network approach. In the absence of pQCD calculations at next-to-leading order in the selected kinematic domain, the gluon polarisation $\Delta g/g$ is evaluated at leading order in pQCD at a hard scale of $\mu^2= \langle Q^2 \rangle = 3 ({\rm GeV}/c)^2$. It is determined in three intervals of the nucleon momentum fraction carried by gluons, $x_{\rm g}$, covering the range $0.04 \!, Comment: 14 pages, 6 figures
Published: 2017

41. Final COMPASS results on the deuteron spin-dependent structure function g(1)(d) and the Bjorken sum rule

Author: C. Adolph, M. Aghasyan, R. Akhunzyanov, M.G. Alexeev, G.D. Alexeev, A. Amoroso, V. Andrieux, N.V. Anfimov, V. Anosov, K. Augsten, W. Augustyniak, A. Austregesilo, C.D.R. Azevedo, B. Badełek, F. Balestra, M. Ball, J. Barth, R. Beck, Y. Bedfer, J. Bernhard, K. Bicker, E.R. Bielert, R. Birsa, M. Bodlak, P. Bordalo, F. Bradamante, C. Braun, A. Bressan, M. Büchele, W.-C. Chang, C. Chatterjee, M. Chiosso, I. Choi, S.-U. Chung, A. Cicuttin, M.L. Crespo, Q. Curiel, S. Dalla Torre, S.S. Dasgupta, S. Dasgupta, O.Yu. Denisov, L. Dhara, S.V. Donskov, N. Doshita, Ch. Dreisbach, V. Duic, W. Dünnweber, M. Dziewiecki, A. Efremov, P.D. Eversheim, W. Eyrich, M. Faessler, A. Ferrero, M. Finger, M. Finger, jr., H. Fischer, C. Franco, N. du Fresne von Hohenesche, J.M. Friedrich, V. Frolov, E. Fuchey, F. Gautheron, O.P. Gavrichtchouk, S. Gerassimov, J. Giarra, F. Giordano, I. Gnesi, M. Gorzellik, S. Grabmüller, A. Grasso, M. Grosse Perdekamp, B. Grube, T. Grussenmeyer, A. Guskov, F. Haas, D. Hahne, G. Hamar, D. von Harrach, F.H. Heinsius, R. Heitz, F. Herrmann, N. Horikawa, N. d'Hose, C.-Y. Hsieh, S. Huber, S. Ishimoto, A. Ivanov, Yu. Ivanshin, T. Iwata, V. Jary, R. Joosten, P. Jörg, E. Kabuß, A. Kerbizi, B. Ketzer, G.V. Khaustov, Yu.A. Khokhlov, Yu. Kisselev, F. Klein, K. Klimaszewski, J.H. Koivuniemi, V.N. Kolosov, K. Kondo, K. Königsmann, I. Konorov, V.F. Konstantinov, A.M. Kotzinian, O.M. Kouznetsov, M. Krämer, P. Kremser, F. Krinner, Z.V. Kroumchtein, Y. Kulinich, F. Kunne, K. Kurek, R.P. Kurjata, A.A. Lednev, A. Lehmann, M. Levillain, S. Levorato, Y.-S. Lian, J. Lichtenstadt, R. Longo, A. Maggiora, A. Magnon, N. Makins, N. Makke, G.K. Mallot, B. Marianski, A. Martin, J. Marzec, J. Matoušek, H. Matsuda, T. Matsuda, G.V. Meshcheryakov, M. Meyer, W. Meyer, Yu.V. Mikhailov, M. Mikhasenko, E. Mitrofanov, N. Mitrofanov, Y. Miyachi, A. Nagaytsev, F. Nerling, D. Neyret, J. Nový, W.-D. Nowak, G. Nukazuka, A.S. Nunes, A.G. Olshevsky, I. Orlov, M. Ostrick, D. Panzieri, B. Parsamyan, S. Paul, J.-C. Peng, F. Pereira, M. Pešek, D.V. Peshekhonov, N. Pierre, S. Platchkov, J. Pochodzalla, V.A. Polyakov, J. Pretz, M. Quaresma, C. Quintans, S. Ramos, C. Regali, G. Reicherz, C. Riedl, M. Roskot, N.S. Rossiyskaya, D.I. Ryabchikov, A. Rybnikov, A. Rychter, R. Salac, V.D. Samoylenko, A. Sandacz, C. Santos, S. Sarkar, I.A. Savin, T. Sawada, G. Sbrizzai, P. Schiavon, K. Schmidt, H. Schmieden, K. Schönning, E. Seder, A. Selyunin, L. Silva, L. Sinha, S. Sirtl, M. Slunecka, J. Smolik, A. Srnka, D. Steffen, M. Stolarski, O. Subrt, M. Sulc, H. Suzuki, A. Szabelski, T. Szameitat, P. Sznajder, S. Takekawa, M. Tasevsky, S. Tessaro, F. Tessarotto, F. Thibaud, A. Thiel, F. Tosello, V. Tskhay, S. Uhl, A. Vauth, J. Veloso, M. Virius, J. Vondra, S. Wallner, T. Weisrock, M. Wilfert, R. Windmolders, J. ter Wolbeek, K. Zaremba, P. Zavada, M. Zavertyaev, E. Zemlyanichkina, N. Zhuravlev, M. Ziembicki, A. Zink, Adolph, C., Aghasyan, M., Akhunzyanov, R., Alexeev, M. G., Alexeev, G. D., Amoroso, A., Andrieux, V., Anfimov, N. V., Anosov, V., Augsten, K., Augustyniak, W., Austregesilo, A., Azevedo, C. D. R, Badełek, B., Balestra, F., Ball, M., Barth, J., Beck, R., Bedfer, Y., Bernhard, J., Bicker, K., Bielert, E. R., Birsa, R., Bodlak, M., Bordalo, P., Bradamante, Franco, Braun, C., Bressan, Andrea, Büchele, M., Chang, W. C., Chatterjee, Chandradoy, Chiosso, M., Choi, I., Chung, S. U., Cicuttin, A., Crespo, M. L., Curiel, Q., DALLA TORRE, Silvia, Dasgupta, SHUDDHA SHANKAR, Dasgupta, S., Denisov, O. Y. u., Dhara, L., Donskov, S. V., Doshita, N., Dreisbach, C. h., Duic, Venicio, Dünnweber, W., Dziewiecki, M., Efremov, A., Eversheim, P. D., Eyrich, W., Faessler, M., Ferrero, A., Finger, M., Fischer, H., Franco, C., du Fresne von Hohenesche, N., Friedrich, J. M., Frolov, V., Fuchey, E., Gautheron, F., Gavrichtchouk, O. P., Gerassimov, S., Giarra, J., Giordano, F., Gnesi, I., Gorzellik, M., Grabmüller, S., Grasso, A., Grosse Perdekamp, M., Grube, B., Grussenmeyer, T., Guskov, A., Haas, F., Hahne, D., Hamar, G., von Harrach, D., Heinsius, F. H., Heitz, R., Herrmann, F., Horikawa, N., D'Hose, N., Hsieh, C. Y., Huber, S., Ishimoto, S., Ivanov, A., Ivanshin, Y. u., Iwata, T., Jary, V., Joosten, R., Jörg, P., Kabuß, E., Kerbizi, Albi, Ketzer, B., Khaustov, G. V., Khokhlov, Y. u. A., Kisselev, Y. u., Klein, F., Klimaszewski, K., Koivuniemi, J. H., Kolosov, V. N., Kondo, K., Königsmann, K., Konorov, I., Konstantinov, V. F., Kotzinian, A. M., Kouznetsov, O. M., Krämer, M., Kremser, P., Krinner, F., Kroumchtein, Z. V., Kulinich, Y., Kunne, F., Kurek, K., Kurjata, R. P., Lednev, A. A., Lehmann, A., Levillain, M., Levorato, Stefano, Lian, Y. S., Lichtenstadt, J., Longo, R., Maggiora, A., Magnon, A., Makins, N., Makke, Nour, Mallot, G. K., Marianski, B., Martin, Anna, Marzec, J., Matousek, Jan, Matsuda, H., Matsuda, T., Meshcheryakov, G. V., Meyer, M., Meyer, W., Mikhailov, Y. u. V., Mikhasenko, M., Mitrofanov, E., Mitrofanov, N., Miyachi, Y., Nagaytsev, A., Nerling, F., Neyret, D., Nový, J., Nowak, W. D., Nukazuka, G., Nunes, A. S., Olshevsky, A. G., Orlov, I., Ostrick, M., Panzieri, D., Parsamyan, B., Paul, S., Peng, J. C., Pereira, F., Pešek, M., Peshekhonov, D. V., Pierre, N., Platchkov, S., Pochodzalla, J., Polyakov, V. A., Pretz, J., Quaresma, M., Quintans, C., Ramos, S., Regali, C., Reicherz, G., Riedl, C., Roskot, M., Rossiyskaya, N. S., Ryabchikov, D. I., Rybnikov, A., Rychter, A., Salac, R., Samoylenko, V. D., Sandacz, A., Santos, C., Sarkar, S., Savin, I. A., Sawada, T., Sbrizzai, Giulio, Schiavon, Paolo, Schmidt, K., Schmieden, H., Schönning, K., Seder, E., Selyunin, A., Silva, L., Sinha, L., Sirtl, S., Slunecka, M., Smolik, J., Srnka, A., Steffen, D., Stolarski, M., Subrt, O., Sulc, M., Suzuki, H., Szabelski, Adam, Szameitat, T., Sznajder, P., Takekawa, Stefano, Tasevsky, M., Tessaro, Susanna, Tessarotto, Fulvio, Thibaud, F., Thiel, A., Tosello, F., Tskhay, V., Uhl, S., Vauth, A., Veloso, J., Virius, M., Vondra, J., Wallner, S., Weisrock, T., Wilfert, M., Windmolders, R., ter Wolbeek, J., Zaremba, K., Zavada, P., Zavertyaev, M., Zemlyanichkina, E., Zhuravlev, N., Ziembicki, M., and Zink, A.
Subjects: Nuclear and High Energy Physics, Parton helicity distribution, COMPASS, lcsh:QC1-999, Structure function, Spin, Physical Sciences, Fysik, High Energy Physics::Experiment, Deep inelastic scattering, Parton helicity distributions, Nuclear Experiment, lcsh:Physics
Abstract: Final results are presented from the inclusive measurement of deep-inelastic polarised-muon scattering on longitudinally polarised deuterons using a 6LiD target. The data were taken at 160 GeV beam energy and the results are shown for the kinematic range View the MathML source in photon virtuality, 0.004
Published: 2017

42. Multiplicities of charged pions and charged hadrons from deep-inelastic scattering of muons off an isoscalar target

Author: A. Maggiora, J. Lichtenstadt, S.-U. Chung, N.S. Rossiyskaya, F. Giordano, K. Schmidt, Norihiro Doshita, M. Gorzellik, M. Wilfert, V.I. Nikolaenko, M. Grosse Perdekamp, F. Thibaud, N. d'Hose, V. Anosov, H. Schmieden, J.M. Friedrich, Y.-S. Lian, François Herrmann, C. Adolph, Laura Silva, M. Meyer, A. Grasso, J. Bisplinghoff, M. V. Zavertyaev, M. Roskot, M. Krämer, J. Barth, J. Smolik, W. Augustyniak, S. Ramos, R. Akhunzyanov, S. Huber, E. M. Kabuß, C. Regali, C. Marchand, Y. u. Ivanshin, Gerhard K. Mallot, S. Takekawa, P.D. Eversheim, I. Konorov, H. Suzuki, C.D.R. Azevedo, M. Stolarski, E. Zemlyanichkina, Yakov Petrovich Kulinich, S. Grabmüller, D.V. Peshekhonov, G. D. Alexeev, N. C. R. Makins, P. Zavada, W. Meyer, Maria Liz Crespo, V. Jary, J. Pretz, T. Weisrock, A.V. Efremov, S. Platchkov, M. Tasevsky, F. Pereira, E. Mitrofanov, C. Quintans, Z.V. Kroumchtein, N. du Fresne von Hohenesche, G.V. Meshcheryakov, P. Sznajder, Kamil Augsten, Yu. V. Mikhailov, S. Sirtl, I.A. Savin, W. Dünnweber, V. Andrieux, L. Dhara, M. Faessler, C. Braun, K. Bicker, Adam Szabelski, Mikhail Mikhasenko, D. Steffen, M. Aghasyan, E. Fuchey, Aram Kotzinian, R. Windmolders, Nikolay Anfimov, B. Marianski, B. Badelek, K. Zaremba, F. Tessarotto, Miroslav Sulc, F. Hinterberger, V.A. Polyakov, F. Nerling, R. Jahn, J. Pochodzalla, Andrew Ivanov, A. Magnon, B. Ketzer, G. Sbrizzai, A. Nagaytsev, F. Balestra, N. Pierre, Bakur Parsamyan, O.P. Gavrichtchouk, M. Finger, P. Bordalo, Jan Matousek, M. Ziembicki, Martin Bodlak, A. Rychter, Johannes Bernhard, A. Guskov, P. Montuenga, P. Kremser, R. Longo, F. Haas, L. Sinha, T. Matsuda, A. Zink, V.N. Kolosov, K. Schönning, A. Amoroso, A. Lehmann, R. Joosten, D.I. Ryabchikov, Y. Miyachi, A.A. Lednev, F. H. Heinsius, D. von Harrach, K. Königsmann, M. Slunecka, C. Riedl, Arseniy Rybnikov, B. Grube, T. Michigami, R. Heitz, J. ter Wolbeek, I. Gnesi, Yu. Kisselev, R. Birsa, G.V. Khaustov, Andrea Bressan, L. Capozza, C. Franco, K. Kondo, Franco Bradamante, W.-D. Nowak, N. I. Zhuravlev, Federica Sozzi, A. Sandacz, S. Gerassimov, N. Horikawa, K. Klimaszewski, Frank Klein, V.F. Konstantinov, Y. Bedfer, Jen-Chieh Peng, S. Schopferer, F. Tosello, E. Seder, S. Tessaro, D. Hahne, Fabrice Gautheron, M.G. Alexeev, Chandradoy Chatterjee, S. Ishimoto, H. Fischer, A.G. Olshevsky, M. Levillain, C.-Y. Hsieh, Celso Augusto Guimarães Santos, V. Frolov, S. Uhl, Yu.A. Khokhlov, T. Szameitat, Andres Cicuttin, Q. Curiel, P. Schiavon, Soumen Paul, D. Neyret, T. Sawada, I. Orlov, V.D. Samoylenko, Alexandr Selyunin, G. Reicherz, Michal Dziewiecki, P. Jörg, R. Kuhn, V. Tskhay, W. Eyrich, I. J. Choi, Nour Makke, O.Yu. Shevchenko, S. Levorato, H. Matsuda, Andrea Ferrero, W. C. Chang, Shuddha Shankar Dasgupta, S. Dalla Torre, M. Chiosso, M. Büchele, Alan D. Martin, S. Sarkar, J.H. Koivuniemi, S. Dasgupta, N. Mitrofanov, R.P. Kurjata, A. Austregesilo, F. Krinner, M. Quaresma, O.Yu. Denisov, M. Virius, F. Kunne, G. Nukazuka, K. Kurek, S. V. Donskov, M. Pešek, R. Hashimoto, A.S. Nunes, Takahiro Iwata, R. Beck, D. Panzieri, Janusz Marzec, T. Grussenmeyer, J. Vondra, J.F.C.A. Veloso, O.M. Kouznetsov, A. Srnka, R. Salac, M. Ostrick, E.R. Bielert, V. Duic, M. Boer, J. Nový, Département de Physique Nucléaire (ex SPhN) (DPHN), Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, COMPASS, Département de Physique Nucléaire (ex SPhN) ( DPHN ), Institut de Recherches sur les lois Fondamentales de l'Univers ( IRFU ), Commissariat à l'énergie atomique et aux énergies alternatives ( CEA ) -Université Paris-Saclay-Commissariat à l'énergie atomique et aux énergies alternatives ( CEA ) -Université Paris-Saclay, Commissariat à l'énergie atomique et aux énergies alternatives ( CEA ) -Université Paris-Saclay, Adolph, C., Aghasyan, M., Akhunzyanov, R., Alexeev, G. D., Alexeev, M. G., Amoroso, A., Andrieux, V., Anfimov, N. V., Anosov, V., Augsten, K., Augustyniak, W., Austregesilo, A., Azevedo, C. D. R., Badełek, B., Balestra, F., Barth, J., Beck, R., Bedfer, Y., Bernhard, J., Bicker, K., Bielert, E. R., Birsa, Renato, Bisplinghoff, J., Bodlak, M., Boer, M., Bordalo, P., Bradamante, Franco, Braun, C., Bressan, Andrea, Büchele, M., Capozza, L., Chang, W. C., Chatterjee, Chandradoy, Chiosso, M., Choi, I., Chung, S. U., Cicuttin, A., Crespo, M. L., Curiel, Q., Dalla Torre, S., Dasgupta, SHUDDHA SHANKAR, Dasgupta, S., Denisov, O. Yu, Dhara, L., Donskov, S. V., Doshita, N., Duic, Venicio, Dünnweber, W., Dziewiecki, M., Efremov, A., Eversheim, P. D., Eyrich, W., Faessler, M., Ferrero, A., Finger, M., Fischer, H., Franco, C., du Fresne von Hohenesche, N., Friedrich, J. M., Frolov, V., Fuchey, E., Gautheron, F., Gavrichtchouk, O. P., Gerassimov, S., Giordano, F., Gnesi, I., Gorzellik, M., Grabmüller, S., Grasso, A., Grosse Perdekamp, M., Grube, B., Grussenmeyer, T., Guskov, A., Haas, F., Hahne, D., von Harrach, D., Hashimoto, R., Heinsius, F. H., Heitz, R., Herrmann, F., Hinterberger, F., Horikawa, N., D'Hose, N., Hsieh, C. Y., Huber, S., Ishimoto, S., Ivanov, A., Ivanshin, Y. u., Iwata, T., Jahn, R., Jary, V., Joosten, R., Jörg, P., Kabuß, E., Ketzer, B., Khaustov, G. V., Khokhlov, Y. u. A., Kisselev, Y. u., Klein, F., Klimaszewski, K., Koivuniemi, J. H., Kolosov, V. N., Kondo, K., Königsmann, K., Konorov, I., Konstantinov, V. F., Kotzinian, A. M., Kouznetsov, O. M., Krämer, M., Kremser, P., Krinner, F., Kroumchtein, Z. V., Kuhn, R., Kulinich, Y., Kunne, F., Kurek, K., Kurjata, R. P., Lednev, A. A., Lehmann, A., Levillain, M., Levorato, Stefano, Lian, Y. S., Lichtenstadt, J., Longo, R., Maggiora, A., Magnon, A., Makins, N., Makke, Nour, Mallot, G. K., Marchand, C., Marianski, B., Martin, Anna, Marzec, J., Matousek, Jan, Matsuda, H., Matsuda, T., Meshcheryakov, G. V., Meyer, M., Meyer, W., Michigami, T., Mikhailov, Y. u. V., Mikhasenko, M., Mitrofanov, E., Mitrofanov, N., Miyachi, Y., Montuenga, P., Nagaytsev, A., Nerling, F., Neyret, D., Nikolaenko, V. I., Nový, J., Nowak, W. D., Nukazuka, G., Nunes, A. S., Olshevsky, A. G., Orlov, I., Ostrick, M., Panzieri, D., Parsamyan, B., Paul, S., Peng, J. C., Pereira, F., Pešek, M., Peshekhonov, D. V., Pierre, N., Platchkov, S., Pochodzalla, J., Polyakov, V. A., Pretz, J., Quaresma, M., Quintans, C., Ramos, S., Regali, C., Reicherz, G., Riedl, C., Roskot, M., Rossiyskaya, N. S., Ryabchikov, D. I., Rybnikov, A., Rychter, A., Salac, R., Samoylenko, V. D., Sandacz, A., Santos, C., Sarkar, S., Savin, I. A., Sawada, T., Sbrizzai, Giulio, Schiavon, Paolo, Schmidt, K., Schmieden, H., Schönning, K., Schopferer, S., Seder, E., Selyunin, A., Shevchenko, O. Yu, Silva, L., Sinha, L., Sirtl, S., Slunecka, M., Smolik, J., Sozzi, Federica, Srnka, A., Steffen, D., Stolarski, M., Sulc, M., Suzuki, H., Szabelski, Adam, Szameitat, T., Sznajder, P., Takekawa, Stefano, Tasevsky, M., Tessaro, Susanna, Tessarotto, F., Thibaud, F., Tosello, F., Tskhay, V., Uhl, S., Veloso, J., Virius, M., Vondra, J., Weisrock, T., Wilfert, M., Windmolders, R., ter Wolbeek, J., Zaremba, K., Zavada, P., Zavertyaev, M., Zemlyanichkina, E., Zhuravlev, N., Ziembicki, M., and Zink, A.
Subjects: Quark, Nuclear and High Energy Physics, Photon, Isoscalar, Hadron, Nuclear Theory, HERMES, target: isoscalar, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], nucl-ex, 01 natural sciences, COMPASS, scaling: Bjorken, Nuclear physics, Pion, Astronomi, astrofysik och kosmologi, [ PHYS.HEXP ] Physics [physics]/High Energy Physics - Experiment [hep-ex], 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], Astronomy, Astrophysics and Cosmology, Pion multiplicities, Nuclear Physics - Experiment, [ PHYS.NEXP ] Physics [physics]/Nuclear Experiment [nucl-ex], quantum chromodynamics: perturbation theory, 010306 general physics, Nuclear Experiment, RICH, Deep inelastic scattering, Fragmentation functions, Physics, quark: fragmentation function, Muon, pi: multiplicity, hep-ex, 010308 nuclear & particles physics, Scattering, muon: beam, higher-order: 0, Fragmentation function, photon, hadron: energy, lcsh:QC1-999, kinematics, Pion multiplicitie, High Energy Physics::Experiment, Particle Physics - Experiment, lcsh:Physics
Abstract: Multiplicities of charged pions and charged hadrons produced in deep-inelastic scattering were measured in three-dimensional bins of the Bjorken scaling variable x , the relative virtual-photon energy y and the relative hadron energy z . Data were obtained by the COMPASS Collaboration using a 160GeV muon beam and an isoscalar target ( 6 LiD). They cover the kinematic domain in the photon virtuality Q2>1(GeV/c)2 , 0.004 1(GeV/c$)^2$, $0.004 < x < 0.4$, $0.2 < z < 0.85$ and $0.1 < y < 0.7$. In addition, a leading-order pQCD analysis was performed using the pion multiplicity results to extract quark fragmentation functions.
Published: 2017

43. Longitudinal double spin asymmetries in single hadron quasi-real photoproduction at high $p_T$

Author: M. Grosse Perdekamp, N.S. Rossiyskaya, I.A. Savin, Jen-Chieh Peng, A. Grasso, M. Wilfert, C. Quintans, S. Grabmüller, R. Kuhn, K. Klimaszewski, O.Yu. Denisov, F. Kunne, P.D. Eversheim, S. Takekawa, R. Beck, R. Akhunzyanov, G. D. Alexeev, M. Chiosso, R. Hashimoto, R.P. Kurjata, J. Pochodzalla, P. Bordalo, H. Suzuki, C.D.R. Azevedo, F. Pereira, K. Kondo, R. Jahn, K. Kurek, O. Kouznetsov, Franco Bradamante, V. Anosov, C. Regali, Andres Cicuttin, Fabrice Gautheron, P. Schiavon, G.V. Meshcheryakov, P. Montuenga, S. Gerassimov, N. Horikawa, F. Tosello, B. Marianski, O.P. Gavrichtchouk, Martin Bodlak, L. Sinha, T. Matsuda, A. Zink, I. Orlov, V.D. Samoylenko, G. Reicherz, Yu. V. Mikhailov, S. Sirtl, Celso Augusto Guimarães Santos, J. Pretz, Bakur Parsamyan, I. Konorov, S.S. Dasgupta, S. Dalla Torre, H. Matsuda, M. Boer, L. Dhara, C. Braun, S. Tessaro, D. Hahne, M.G. Alexeev, M. V. Zavertyaev, S. Platchkov, Z.V. Kroumchtein, N. du Fresne von Hohenesche, M. Levillain, C.-Y. Hsieh, V. Frolov, Soumen Paul, T. Szameitat, B. Badelek, S. Uhl, Michal Dziewiecki, A. Magnon, C. Marchand, C. Adolph, P. Kremser, D.I. Ryabchikov, B. Ketzer, Yu.A. Khokhlov, A. Srnka, F. Nerling, R. Joosten, S. Sarkar, G. Nukazuka, Andrea Ferrero, M. Faessler, M. Stolarski, M. Gorzellik, S. V. Donskov, M. Pešek, I. J. Choi, V.I. Nikolaenko, Yu. Kisselev, A.S. Nunes, Johannes Bernhard, A. Guskov, D. Panzieri, Janusz Marzec, A.G. Olshevsky, M. Ostrick, T. Grussenmeyer, S. Dasgupta, A. Austregesilo, B. Grube, E.R. Bielert, F. Krinner, Laura Silva, A.V. Efremov, K. Zaremba, V.A. Polyakov, Andrea Bressan, Miroslav Sulc, F. Hinterberger, W. Augustyniak, S. Ramos, J.F.C.A. Veloso, Y. Miyachi, A.A. Lednev, G. Sbrizzai, Frank Klein, M. Virius, Q. Curiel, P. Sznajder, D. Neyret, T. Michigami, H. Schmieden, A. Amoroso, M. Büchele, A. Lehmann, J.M. Friedrich, J. Nový, N. Kuchinski, J.H. Koivuniemi, K. Königsmann, S.-U. Chung, R. Birsa, J. Bisplinghoff, A. Sandacz, K. Bicker, A. Maggiora, Yu. Ivanshin, S. Huber, V. Duic, Takahiro Iwata, W. Dünnweber, E. Zemlyanichkina, K. Schmidt, François Herrmann, M. Ziembicki, P. Jörg, Norihiro Doshita, N. d'Hose, A. Rychter, Aram Kotzinian, R. Longo, V.N. Kolosov, K. Schönning, F. H. Heinsius, O.Yu. Shevchenko, S. Levorato, M. Slunecka, Alexandr Selyunin, G.V. Khaustov, J. ter Wolbeek, W. Eyrich, C. Franco, Naomi C R Makins, Nour Makke, W. C. Chang, Y. Bedfer, F. Tessarotto, Federica Sozzi, M. Krämer, S. Schopferer, M. Quaresma, M. Finger, W.-D. Nowak, D.V. Peshekhonov, Anne-Laure Martin, E. Fuchey, I. Gnesi, F. Giordano, E. Burtin, Jan Matousek, V.F. Konstantinov, J. Lichtenstadt, S. Ishimoto, H. Fischer, V. Andrieux, Adam Szabelski, V. Tskhay, A. Nagaytsev, F. Balestra, W. Meyer, Maria Liz Crespo, V. Jary, Andrew Ivanov, D. von Harrach, F. Thibaud, J. Barth, Gerhard K. Mallot, T. Weisrock, F. Haas, C. Riedl, E. M. Kabuß, Physikalisches Institut [Erlangen], Friedrich-Alexander Universität Erlangen-Nürnberg (FAU), Département de Physique Nucléaire (ex SPhN) (DPHN), Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, Courant Institute of Mathematical Sciences [New York] (CIMS), New York University [New York] (NYU), NYU System (NYU)-NYU System (NYU), National Center for High-Performance Computing, Max-Planck-Institut für Radioastronomie (MPIFR), Department of Mathematics, King's College London, IBM Research [Zurich], Centre de Recherche sur la Conservation (CRC ), Muséum national d'Histoire naturelle (MNHN)-Ministère de la Culture et de la Communication (MCC)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de chimie théorique (LCT), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), DCC - Departemento de Ciencias da Computação, Universidade Federal de Minas Gerais = Federal University of Minas Gerais [Belo Horizonte, Brazil] (UFMG), Centre de recherche et de restauration des musées de France (C2RMF), Ministère de la Culture et de la Communication (MCC)-Centre National de la Recherche Scientifique (CNRS), Federal University of Minas Gerais (UFMG), Centre National de la Recherche Scientifique (CNRS)-Ministère de la Culture et de la Communication (MCC), Adolph, C., Akhunzyanov, R., Alexeev, M. G., Alexeev, G. D., Amoroso, A., Andrieux, V., Anosov, V., Augustyniak, W., Austregesilo, A., Azevedo, C. D. R., Badełek, B., Balestra, F., Barth, J., Beck, R., Bedfer, Y., Bernhard, J., Bicker, K., Bielert, E. R., Birsa, Renato, Bisplinghoff, J., Bodlak, M., Boer, M., Bordalo, P., Bradamante, Franco, Braun, C., Bressan, Andrea, Büchele, M., Burtin, E., Chang, W. C., Chiosso, M., Choi, I., Chung, S. U., Cicuttin, A., Crespo, M. L., Curiel, Q., DALLA TORRE, Silvia, Dasgupta, SHUDDHA SHANKAR, Dasgupta, S., Denisov, O. Yu, Dhara, L., Donskov, S. V., Doshita, N., Duic, Venicio, Dünnweber, W., Dziewiecki, M., Efremov, A., Eversheim, P. D., Eyrich, W., Faessler, M., Ferrero, A., Finger, M., Fischer, H., Franco, C., du Fresne von Hohenesche, N., Friedrich, J. M., Frolov, V., Fuchey, E., Gautheron, F., Gavrichtchouk, O. P., Gerassimov, S., Giordano, F., Gnesi, I., Gorzellik, M., Grabmüller, S., Grasso, A., Grosse Perdekamp, M., Grube, B., Grussenmeyer, T., Guskov, A., Haas, F., Hahne, D., von Harrach, D., Hashimoto, R., Heinsius, F. H., Herrmann, F., Hinterberger, F., Horikawa, N., D'Hose, N., Hsieh, C. Y., Huber, S., Ishimoto, S., Ivanov, A., Ivanshin, Y. u., Iwata, T., Jahn, R., Jary, V., Joosten, R., Jörg, P., Kabuß, E., Ketzer, B., Khaustov, G. V., Khokhlov, Y. u. A., Kisselev, Y. u., Klein, F., Klimaszewski, K., Koivuniemi, J. H., Kolosov, V. N., Kondo, K., Königsmann, K., Konorov, I., Konstantinov, V. F., Kotzinian, A. M., Kouznetsov, O., Krämer, M., Kremser, P., Krinner, F., Kroumchtein, Z. V., Kuchinski, N., Kuhn, R., Kunne, F., Kurek, K., Kurjata, R. P., Lednev, A. A., Lehmann, A., Levillain, M., Levorato, Stefano, Lichtenstadt, J., Longo, R., Maggiora, A., Magnon, A., Makins, N., Makke, Nour, Mallot, G. K., Marchand, C., Marianski, B., Martin, Anna, Marzec, J., Matousek, Jan, Matsuda, H., Matsuda, T., Meshcheryakov, G., Meyer, W., Michigami, T., Mikhailov, Y. u. V., Miyachi, Y., Montuenga, P., Nagaytsev, A., Nerling, F., Neyret, D., Nikolaenko, V. I., Nový, J., Nowak, W. D., Nukazuka, G., Nunes, A. S., Olshevsky, A. G., Orlov, I., Ostrick, M., Panzieri, D., Parsamyan, B., Paul, S., Peng, J. C., Pereira, F., Pešek, M., Peshekhonov, D. V., Platchkov, S., Pochodzalla, J., Polyakov, V. A., Pretz, J., Quaresma, M., Quintans, C., Ramos, S., Regali, C., Reicherz, G., Riedl, C., Rossiyskaya, N. S., Ryabchikov, D. I., Rychter, A., Samoylenko, V. D., Sandacz, A., Santos, C., Sarkar, S., Savin, I. A., Sbrizzai, Giulio, Schiavon, Paolo, Schmidt, K., Schmieden, H., Schönning, K., Schopferer, S., Selyunin, A., Shevchenko, O. Y. u., Silva, L., Sinha, L., Sirtl, S., Slunecka, M., Sozzi, Federica, Srnka, A., Stolarski, M., Sulc, M., Suzuki, H., Szabelski, A., Szameitat, T., Sznajder, P., Takekawa, Stefano, Tessaro, S., Tessarotto, Fulvio, Thibaud, F., Tosello, F., Tskhay, V., Uhl, S., Veloso, J., Virius, M., Weisrock, T., Wilfert, M., ter Wolbeek, J., Zaremba, K., Zavertyaev, M., Zemlyanichkina, E., Ziembicki, M., and Zink, A.
Subjects: Nuclear and High Energy Physics, Particle physics, Photon, High pT, Hadron, Nuclear Theory, COMPASS, Deep inelastic scattering, Double spin asymmetry, δG, FOS: Physical sciences, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], Lambda, 01 natural sciences, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), High Energy Physics - Phenomenology (hep-ph), 0103 physical sciences, 010306 general physics, Nuclear Experiment, Physics, Muon, 010308 nuclear & particles physics, lcsh:QC1-999, Gluon, High Energy Physics - Phenomenology, Deuterium, High Energy Physics::Experiment, Nucleon, lcsh:Physics, Particle Physics - Experiment
Abstract: We measured the longitudinal double spin asymmetries $A_{LL}$ for single hadron muo-production off protons and deuterons at photon virtuality $Q^2$ < 1(GeV/$\it c$)$^2$ for transverse hadron momenta $p_T$ in the range 0.7 GeV/$\it c$ to 4 GeV/$\it c$ . They were determined using COMPASS data taken with a polarised muon beam of 160 GeV/$\it c$ or 200 GeV/$\it c$ impinging on polarised $\mathrm{{}^6LiD}$ or $\mathrm{NH_3}$ targets. The experimental asymmetries are compared to next-to-leading order pQCD calculations, and are sensitive to the gluon polarisation $\Delta G$ inside the nucleon in the range of the nucleon momentum fraction carried by gluons $0.05 < x_g < 0.2$. We measured the longitudinal double spin asymmetries ALL for single hadron muoproduction off protons and deuterons at photon virtuality Q2
Published: 2016

44. The COMPASS experiment at CERN

Author: P. Abbon, E. Albrecht, V.Yu. Alexakhin, Yu. Alexandrov, G.D. Alexeev, M.G. Alekseev, A. Amoroso, H. Angerer, V.A. Anosov, B. Badełek, F. Balestra, J. Ball, J. Barth, G. Baum, M. Becker, Y. Bedfer, P. Berglund, C. Bernet, R. Bertini, M. Bettinelli, R. Birsa, J. Bisplinghoff, P. Bordalo, M. Bosteels, F. Bradamante, A. Braem, A. Bravar, A. Bressan, G. Brona, E. Burtin, M.P. Bussa, V.N. Bytchkov, M. Chalifour, A. Chapiro, M. Chiosso, P. Ciliberti, A. Cicuttin, M. Colantoni, A.A. Colavita, S. Costa, M.L. Crespo, P. Cristaudo, T. Dafni, N. d’Hose, S. Dalla Torre, C. d’Ambrosio, S. Das, S.S. Dasgupta, E. Delagnes, R. De Masi, P. Deck, N. Dedek, D. Demchenko, O.Yu. Denisov, L. Dhara, V. Diaz, N. Dibiase, A.M. Dinkelbach, A.V. Dolgopolov, A. Donati, S.V. Donskov, V.A. Dorofeev, N. Doshita, D. Durand, V. Duic, W. Dünnweber, A. Efremov, P.D. Eversheim, W. Eyrich, M. Faessler, V. Falaleev, P. Fauland, A. Ferrero, L. Ferrero, M. Finger, H. Fischer, C. Franco, J. Franz, F. Fratnik, J.M. Friedrich, V. Frolov, U. Fuchs, R. Garfagnini, L. Gatignon, F. Gautheron, O.P. Gavrichtchouk, S. Gerassimov, R. Geyer, J.M. Gheller, A. Giganon, M. Giorgi, B. Gobbo, S. Goertz, A.M. Gorin, F. Gougnaud, S. Grabmüller, O.A. Grajek, A. Grasso, B. Grube, A. Grünemaier, A. Guskov, F. Haas, R. Hagemann, J. Hannappel, D. von Harrach, T. Hasegawa, J. Heckmann, S. Hedicke, F.H. Heinsius, R. Hermann, C. Heß, F. Hinterberger, M. von Hodenberg, N. Horikawa, S. Horikawa, I. Horn, C. Ilgner, A.I. Ioukaev, S. Ishimoto, I. Ivanchin, O. Ivanov, T. Iwata, R. Jahn, A. Janata, R. Joosten, N.I. Jouravlev, E. Kabuß, V. Kalinnikov, D. Kang, F. Karstens, W. Kastaun, B. Ketzer, G.V. Khaustov, Yu.A. Khokhlov, J. Kiefer, Yu. Kisselev, F. Klein, K. Klimaszewski, S. Koblitz, J.H. Koivuniemi, V.N. Kolosov, E.V. Komissarov, K. Kondo, K. Königsmann, A.K. Konoplyannikov, I. Konorov, V.F. Konstantinov, A.S. Korentchenko, A. Korzenev, A.M. Kotzinian, N.A. Koutchinski, O. Kouznetsov, K. Kowalik, D. Kramer, N.P. Kravchuk, G.V. Krivokhizhin, Z.V. Kroumchtein, J. Kubart, R. Kuhn, V. Kukhtin, F. Kunne, K. Kurek, N.A. Kuzmin, M. Lamanna, J.M. Le Goff, M. Leberig, A.A. Lednev, A. Lehmann, V. Levinski, S. Levorato, V. I Lyashenko, J. Lichtenstadt, T. Liska, I. Ludwig, A. Maggiora, M. Maggiora, A. Magnon, G.K. Mallot, A. Mann, I.V. Manuilov, C. Marchand, J. Marroncle, A. Martin, J. Marzec, L. Masek, F. Massmann, T. Matsuda, D. Matthiä, A.N. Maximov, G. Menon, W. Meyer, A. Mielech, Yu.V. Mikhailov, M.A. Moinester, F. Molinié, F. Mota, A. Mutter, T. Nagel, O. Nähle, J. Nassalski, S. Neliba, F. Nerling, D. Neyret, M. Niebuhr, T. Niinikoski, V.I. Nikolaenko, A.A. Nozdrin, A.G. Olshevsky, M. Ostrick, A. Padee, P. Pagano, S. Panebianco, B. Parsamyan, D. Panzieri, S. Paul, B. Pawlukiewicz, H. Pereira, D.V. Peshekhonov, V.D. Peshekhonov, D. Piedigrossi, G. Piragino, S. Platchkov, K. Platzer, J. Pochodzalla, J. Polak, V.A. Polyakov, G. Pontecorvo, A.A. Popov, J. Pretz, S. Procureur, C. Quintans, J.-F. Rajotte, S. Ramos, I. Razaq, P. Rebourgeard, D. Reggiani, G. Reicherz, A. Richter, F. Robinet, E. Rocco, E. Rondio, L. Ropelewski, J.Y. Roussé, A.M. Rozhdestvensky, D. Ryabchikov, A.G. Samartsev, V.D. Samoylenko, A. Sandacz, M. Sans Merce, H. Santos, M.G. Sapozhnikov, F. Sauli, I.A. Savin, P. Schiavon, C. Schill, T. Schmidt, H. Schmitt, L. Schmitt, P. Schönmeier, W. Schroeder, D. Seeharsch, M. Seimetz, D. Setter, A. Shaligin, O.Yu. Shevchenko, A.A. Shishkin, H.-W. Siebert, L. Silva, F. Simon, L. Sinha, A.N. Sissakian, M. Slunecka, G.I. Smirnov, D. Sora, S. Sosio, F. Sozzi, A. Srnka, F. Stinzing, M. Stolarski, V.P. Sugonyaev, M. Sulc, R. Sulej, G. Tarte, N. Takabayashi, V.V. Tchalishev, S. Tessaro, F. Tessarotto, A. Teufel, D. Thers, L.G. Tkatchev, T. Toeda, V.V. Tokmenin, S. Trippel, J. Urban, R. Valbuena, G. Venugopal, M. Virius, N.V. Vlassov, A. Vossen, M. Wagner, R. Webb, E. Weise, Q. Weitzel, U. Wiedner, M. Wiesmann, R. Windmolders, S. Wirth, W. Wiślicki, H. Wollny, A.M. Zanetti, K. Zaremba, M. Zavertyaev, J. Zhao, R. Ziegler, M. Ziembicki, Y.L. Zlobin, A. Zvyagin, Abbon, P, Albrecht, E, ALEXAKHIN V., Yu, Alexandrov, Yu, ALEXEEV G., D, ALEKSEEV M., G, Amoroso, A, Angerer, H, ANOSOV V., A, Badelek, B, Balestra, F, Ball, J, Barth, J, Baum, G, Becker, M, Bedfer, Y, Berglund, P, Bernet, C, Bertini, R, Bettinelli, M, Birsa, R, Bisplinghoff, J, Bordalo, P, Bosteels, M, Bradamante, Franco, Braem, A, Bravar, A, Bressan, Andrea, Brona, G, Burtin, E, BUSSA M., P, BYTCHKOV V., N, Chalifour, M, Chapiro, A, Chiosso, M, Ciliberti, Piero, Cicuttin, A, Colantoni, M, COLAVITA A., A, Costa, S, CRESPO M., L, Cristaudo, P, Dafni, T, D'Hose, N, DALLA TORRE, S, D'Ambrosio, C, Das, S, DASGUPTA S., S, Delagnes, E, DE MASI, R, Deck, P, Dedek, N, Demchenko, D, DENISOV O., Yu, Dhara, L, Diaz, V, Dibiase, N, DINKELBACH A., M, DOLGOPOLOV A., V, Donati, A, DONSKOV S., V, DOROFEEV V., A, Doshita, N, Durand, D, Duic, V, Dünnweber, W, Efremov, A, EVERSHEIM P., D, Eyrich, W, Faessler, M, Falaleev, V, Fauland, P, Ferrero, A, Ferrero, L, Finger, M, FINGER M., Jr, Fischer, H, Franco, C, Franz, J, Fratnik, F, FRIEDRICH J., M, Frolov, V, Fuchs, U, Garfagnini, R, Gatignon, L, Gautheron, F, GAVRICHTCHOUK O., P, Gerassimov, S, Geyer, R, GHELLER J., M, Giganon, A, Giorgi, Marcello, Gobbo, B, Goertz, S, GORIN A., M, Gougnaud, F, Grabmüller, S, GRAJEK O., A, Grasso, A, Grube, B, Grünemaier, A, Guskov, A, Haas, F, Hagemann, R, Hannappel, J, VON HARRACH, D, Hasegawa, T, Heckmann, J, Hedicke, S, HEINSIUS F., H, Hermann, R, Hess, C, Hinterberger, F, VON HODENBERG, M, Horikawa, N, Horikawa, S, Horn, I, Ilgner, C, IOUKAEV A., I, Ishimoto, S, Ivanchin, I, Ivanov, O, Iwata, T, Jahn, R, Janata, A, Joosten, R, JOURAVLEV N., I, Kabuss, E, Kalinnikov, V, Kang, D, Karstens, F, Kastaun, W, Ketzer, B, KHAUSTOV G., V, KHOKHLOV Y. U., A, Kiefer, J, Kisselev, Yu, Klein, F, Klimaszewski, K, Koblitz, S, KOIVUNIEMI J., H, KOLOSOV V., N, KOMISSAROV E., V, Kondo, K, Königsmann, K, KONOPLYANNIKOV A., K, Konorov, I, KONSTANTINOV V., F, KORENTCHENKO A., S, Korzenev, A, KOTZINIAN A., M, KOUTCHINSKI N., A, Kouznetsov, O, Kowalik, K, Kramer, D, KRAVCHUK N., P, KRIVOKHIZHIN G., V, KROUMCHTEIN Z., V, Kubart, J, Kuhn, R, Kukhtin, V, Kunne, F, Kurek, K, KUZMIN N., A, Lamanna, M, LE GOFF J., M, Leberig, M, LEDNEV A., A, Lehmann, A, Levinski, V, Levorato, Stefano, I., LYASHENKO V, Lichtenstadt, J, Liska, T, Ludwig, I, Maggiora, A, Maggiora, M, Magnon, A, MALLOT G., K, Mann, A, MANUILOV I., V, Marchand, C, Marroncle, J, Martin, Anna, Marzec, J, Masek, L, Massmann, F, Matsuda, T, Matthiä, D, MAXIMOV A., N, Menon, G, Meyer, W, Mielech, A, MIKHAILOV Y. U., V, MOINESTER M., A, Molinié, F, Mota, F, Mutter, A, Nagel, T, Nähle, O, Nassalski, J, Neliba, S, Nerling, F, Neyret, D, Niebuhr, M, Niinikoski, T, NIKOLAENKO V., I, NOZDRIN A., A, OLSHEVSKY A., G, Ostrick, M, Padee, A, Pagano, P, Panebianco, S, Parsamyan, B, Panzieri, D, Paul, S, Pawlukiewicz, B, Pereira, H, PESHEKHONOV D., V, PESHEKHONOV V., D, Piedigrossi, D, Piragino, G, Platchkov, S, Platzer, K, Pochodzalla, J, Polak, J, POLYAKOV V., A, Pontecorvo, G, POPOV A., A, Pretz, J, Procureur, S, Quintans, C, RAJOTTE J., F, Ramos, S, Razaq, I, Rebourgeard, P, Reggiani, D, Reicherz, G, Richter, A, Robinet, F, Rocco, E, Rondio, E, Ropelewski, L, ROUSSÉ J., Y, ROZHDESTVENSKY A., M, Ryabchikov, D, SAMARTSEV A., G, SAMOYLENKO V., D, Sandacz, A, SANS MERCE, M, Santos, H, SAPOZHNIKOV M., G, Sauli, F, SAVIN I., A, Schiavon, Paolo, Schill, C, Schmidt, T, Schmitt, H, Schmitt, L, Schönmeier, P, Schroeder, W, Seeharsch, D, Seimetz, M, Setter, D, Shaligin, A, SHEVCHENKO O., Yu, SHISHKIN A., A, SIEBERT H., W, Silva, L, Simon, F, Sinha, L, SISSAKIAN A., N, Slunecka, M, SMIRNOV G., I, Sora, D, Sosio, S, Sozzi, F, Srnka, A, Stinzing, F, Stolarski, M, SUGONYAEV V., P, Sulc, M, Sulej, R, Tarte, G, Takabayashi, N, TCHALISHEV V., V, Tessaro, S, Tessarotto, F, Teufel, A, Thers, D, TKATCHEV L., G, Toeda, T, TOKMENIN V., V, Trippel, S, Urban, J, Valbuena, R, Venugopal, G, Virius, M, VLASSOV N., V, Vossen, A, Wagner, M, Webb, R, Weise, E, Weitzel, Q, Wiedner, U, Wiesmann, M, Windmolders, R, Wirth, S, Wisblicki, W, Wollny, H, ZANETTI A., M, Zaremba, K, Zavertyaev, M, Zhao, J, Ziegler, R, Ziembicki, M, ZLOBIN Y., L, and Zvyagin, A.
Subjects: Nuclear and High Energy Physics, straw tube detector, Physics::Instrumentation and Detectors, Project commissioning, FOS: Physical sciences, fixed-target experiment, RICH detector, hadron structure, High Energy Physics - Experiment, target, MWPC, Nuclear physics, High Energy Physics - Experiment (hep-ex), Compass, Hadron spectroscopy, COMPASS experiment, scintillating fibre detector, Nuclear Experiment, silicon microstrip detectors, Instrumentation, Silicon microstrip detectors, Physics, Large Hadron Collider, Structure function, MicroMegas detector, front-end electronics, DAQ, micromegas detector, drift chamber, Physics::Accelerator Physics, High Energy Physics::Experiment, polarised, GEM detector, calorimetry, Particle Physics - Experiment, polarised DIS
Abstract: The COMPASS experiment makes use of the CERN SPS high-intensitymuon and hadron beams for the investigation of the nucleon spin structure and the spectroscopy of hadrons. One or more outgoing particles are detected in coincidence with the incoming muon or hadron. A large polarized target inside a superconducting solenoid is used for the measurements with the muon beam. Outgoing particles are detected by a two-stage, large angle and large momentum range spectrometer. The setup is built using several types of tracking detectors, according to the expected incident rate, required space resolution and the solid angle to be covered. Particle identification is achieved using a RICH counter and both hadron and electromagnetic calorimeters. The setup has been successfully operated from 2002 onwards using a muon beam. Data with a hadron beam were also collected in 2004. This article describes the main features and performances of the spectrometer in 2004; a short summary of the 2006 upgrade is also given., 84 papes, 74 figures
Published: 2007

45. The COMPASS Setup for Physics with Hadron Beams

Author: O.P. Gavrichtchouk, Martin Bodlak, K. Schmidt, L. Sinha, T. Matsuda, A. Zink, Norihiro Doshita, S. Gerassimov, N. Horikawa, M.G. Alexeev, Yu. Kisselev, S. Uhl, S. Tessaro, D. Hahne, E. M. Kabuß, Michal Dziewiecki, M. Ostrick, L. Steiger, I.A. Savin, E.R. Bielert, S. Goertz, Yu.A. Khokhlov, Murray Moinester, M. L. Colantoni, C. Braun, B. Badelek, J. Pretz, F. Thibaud, P.D. Eversheim, J. Barth, B. Ketzer, J. Lichtenstadt, F. Tessarotto, C. Adolph, Gerhard K. Mallot, Ch. Höppner, A. Samartsev, M. Virius, Miroslav Sulc, F. Hinterberger, M. Gregori, S. Sarkar, M. Wilfert, Z.V. Kroumchtein, R. Panknin, W.-D. Nowak, B. Grube, H. Suzuki, S. Ramos, S. V. Donskov, T. Weisrock, P. Sznajder, A. Lehmann, R. Joosten, S.-U. Chung, N.S. Rossiyskaya, H. Schmieden, A.S. Nunes, D. von Harrach, S. Platchkov, J.M. Friedrich, N. Kuchinski, D. Panzieri, Janusz Marzec, L. Capozza, C. Quintans, Frank Klein, K. Kondo, R. Hashimoto, A. Srnka, J. Bisplinghoff, S. Grabmüller, T. Grussenmeyer, S. Takekawa, Aram Kotzinian, R. Windmolders, Y. Bedfer, A. Grasso, S. Huber, P. Bordalo, D. Durand, François Herrmann, D.I. Ryabchikov, D. Desforge, R. Kuhn, D.V. Peshekhonov, P. Jasinski, J. Novy, E. Zemlyanichkina, F. Nerling, C. Pires, A.V. Efremov, M. Boer, E. Burtin, V.F. Konstantinov, J. ter Wolbeek, H. Wollny, S. Neubert, T. Szameitat, T. Dafni, Ph. Abbon, K. Kurek, Yu. Ivanshin, V.N. Kolosov, K. Schönning, L. Gatignon, S. Sosio, M. Chiosso, S. Ishimoto, H. Fischer, A. Rychter, R. Birsa, C. Regali, G. Pesaro, F. Haas, R. Geyer, O.Yu. Denisov, M. Gorzellik, F. Kunne, Andrea Ferrero, N. d׳Hose, O.M. Kouznetsov, A. Giganon, M. Krämer, V.I. Nikolaenko, T. Nagel, P. Jörg, G. Menon, M. Ziembicki, I. Gnesi, V. Duic, V. Tskhay, J. Pochodzalla, Q. Curiel, A.M. Dinkelbach, Günter Baum, O.Yu. Shevchenko, S. Levorato, D. Neyret, Jan Matousek, Y. Miyachi, A.A. Lednev, Laura Silva, G. Terca, R.P. Kurjata, R. Beck, F. H. Heinsius, A. Berlin, G.V. Meshcheryakov, V. Andrieux, K. Zaremba, Yu. V. Mikhailov, S. Sirtl, Franco Bradamante, A. Austregesilo, Adam Szabelski, I. Konorov, J.-Y. Rousse, C. Elia, T. Michigami, G.V. Khaustov, P. Schiavon, M. Slunecka, V.A. Polyakov, A.B. Ivanov, V. Pesaro, S.S. Dasgupta, G. Sbrizzai, B. Gobbo, M. Levillain, V. Frolov, Soumen Paul, M. V. Zavertyaev, Q. Weitzel, A. Sandacz, W. Eyrich, A. Amoroso, Nour Makke, J. Bieling, K. Bicker, H. Matsuda, Fabrice Gautheron, N. du Fresne von Hohenesche, T. Schlüter, M. Finger, M. Quaresma, M. A. Faessler, Federica Sozzi, E. Rocco, Matthias Schott, S. Schopferer, M. Büchele, R. Sulej, C. Marchand, J.H. Koivuniemi, A. Nagaytsev, R. Akhunzyanov, F. Balestra, W. Meyer, Maria Liz Crespo, J-M. Reymond, G. D. Alexeev, W. Dünnweber, K. Königsmann, A.G. Olshevsky, A. Magnon, Yu. Alexandrov, V. Jary, Christian Schill, Bakur Parsamyan, A. Maggiora, Alan D. Martin, K. Klimaszewski, C. Franco, Andres Cicuttin, I. Orlov, V.D. Samoylenko, G. Reicherz, S. Dalla Torre, Takahiro Iwata, D. Cotte, Johannes Bernhard, A. Guskov, Andrea Bressan, V. Anosov, Marcin Stolarski, J. Marroncle, I. Uman, P. Ciliberti, L. Wang, S. Dasgupta, R. Jahn, Abbon, P., Adolph, C., Akhunzyanov, R., Alexandrov, Y. u., Alexeev, M. G., Alexeev, G. D., Amoroso, A., Andrieux, V., Anosov, V., Austregesilo, A., Badełek, B., Balestra, F., Barth, J., Baum, G, Beck, R., Bedfer, Y., Berlin, A., Bernhard, J., Bicker, K., Bielert, E. R., Bieling, J., Birsa, R., Bisplinghoff, J., Bodlak, M., Boer, M., Bordalo, P., Bradamante, Franco, Braun, C., Bressan, Andrea, Büchele, M., Burtin, E., Capozza, L., Ciliberti, Piero, Chiosso, M., Chung, S. U., Cicuttin, A., Colantoni, M., Cotte, D., Crespo, M. L., Curiel, Q., Dafni, T., DALLA TORRE, Silvia, Dasgupta, SHUDDHA SHANKAR, Dasgupta, S., Denisov, O. Y. u., Desforge, D., Dinkelbach, A. M., Donskov, S. V., Doshita, N., Duic, V., Dünnweber, W., Durand, D., Dziewiecki, M., Efremov, A., Elia, Carmine, Eversheim, P. D., Eyrich, W., Faessler, M., Ferrero, A., Finger, M., Fischer, H., Franco, C., Du Fresne Von Hohenesche, N., Friedrich, J. M., Frolov, V., Gatignon, L., Gautheron, F., Gavrichtchouk, O. P., Gerassimov, S., Geyer, R., Giganon, A., Gnesi, I., Gobbo, B., Goertz, S., Gorzellik, M., Grabmüller, S., Grasso, A., Gregori, M., Grube, B., Grussenmeyer, T., Guskov, A., Haas, F., Von Harrach, D., Hahne, D., Hashimoto, R., Heinsius, F. H., Herrmann, F., Hinterberger, F., Höppner, C. h., Horikawa, N., D'Hose, N., Huber, S., Ishimoto, S., Ivanov, A., Ivanshin, Y. u., Iwata, T., Jahn, R., Jary, V., Jasinski, P., Jörg, P., Joosten, R., Kabuß, E., Ketzer, B., Khaustov, G. V., Khokhlov, Y. u. A., Kisselev, Y. u., Klein, F., Klimaszewski, K., Koivuniemi, J. H., Kolosov, V. N., Kondo, K., Königsmann, K., Konorov, I., Konstantinov, V. F., Kotzinian, A. M., Kouznetsov, O., Krämer, M., Kroumchtein, Z. V., Kuchinski, N., Kuhn, R., Kunne, F., Kurek, K., Kurjata, R. P., Lednev, A. A., Lehmann, A., Levillain, M., Levorato, Stefano, Lichtenstadt, J., Maggiora, A., Magnon, A., Makke, Nour, Mallot, G. K., Marchand, C., Marroncle, J., Martin, Anna, Marzec, J., Matousek, Jan, Matsuda, H., Matsuda, T., Menon, G., Meshcheryakov, G., Meyer, W., Michigami, T., Mikhailov, Y. u. V., Miyachi, Y., Moinester, M. A., Nagaytsev, A., Nagel, T., Nerling, F., Neubert, S., Neyret, D., Nikolaenko, V. I., Novy, J., Nowak, W. D., Nunes, A. S., Olshevsky, A. G., Orlov, I., Ostrick, M., Panknin, R., Panzieri, D., Parsamyan, B., Paul, S., Pesaro, Giulia, Pesaro, V., Peshekhonov, D. V., Pires, C., Platchkov, S., Pochodzalla, J., Polyakov, V. A., Pretz, J., Quaresma, M., Quintans, C., Ramos, S., Regali, C., Reicherz, G., Reymond, J. M., Rocco, E., Rossiyskaya, N. S., Rousse, J. Y., Ryabchikov, D. I., Rychter, A., Samartsev, A., Samoylenko, V. D., Sandacz, A., Sarkar, S., Savin, I. A., Sbrizzai, Giulio, Schiavon, Paolo, Schill, C., Schlüter, T., Schmidt, K., Schmieden, H., Schönning, K., Schopferer, S., Schott, M., Shevchenko, O. Y. u., Silva, L., Sinha, L., Sirtl, S., Slunecka, M., Sosio, S., Sozzi, Federica, Srnka, A., Steiger, L., Stolarski, M., Sulc, M., Sulej, R., Suzuki, H., Szabelski, A., Szameitat, T., Sznajder, P., Takekawa, Stefano, Terça, G., Wolbeek, J. Ter, Tessaro, S., Tessarotto, F., Thibaud, F., Tskhay, V., Uhl, S., Uman, I., Virius, M., Wang, L., Weisrock, T., Weitzel, Q., Wilfert, M., Windmolders, R., Wollny, H., Zaremba, K., Zavertyaev, M., Zemlyanichkina, E., Ziembicki, M., Zink, A., Département d'Electronique, des Détecteurs et d'Informatique pour la Physique (ex SEDI) (DEDIP), Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, Département de Physique Nucléaire (ex SPhN) (DPHN), Institut de Physique Nucléaire d'Orsay (IPNO), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Département d'Ingénierie des Systèmes (ex SIS) (DIS), COMPASS, and Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)
Subjects: Particle physics, Calorimetry, Data acquisition and reconstruction, Fixed target experiment for hadron spectroscopy, Front-end electronics, Micro Pattern detectors and Drift chambers, Monte-Carlo simulation, RICH, Instrumentation, Nuclear and High Energy Physics, Physics - Instrumentation and Detectors, Physics::Instrumentation and Detectors, Hadron, FOS: Physical sciences, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], acquisition and reconstruction, 01 natural sciences, 7. Clean energy, High Energy Physics - Experiment, Nuclear physics, Momentum, High Energy Physics - Experiment (hep-ex), Compass, Hadron spectroscopy, 0103 physical sciences, Detectors and Experimental Techniques, 010306 general physics, Physics, Data, Large Hadron Collider, 010308 nuclear & particles physics, MicroMegas detector, Instrumentation and Detectors (physics.ins-det), Micro Pattern detectors, and Drift chambers, Gas electron multiplier, Physics::Accelerator Physics, High Energy Physics::Experiment, Particle Physics - Experiment, Beam (structure), Front-end electronic, Micro Pattern detectors and Drift chamber
Abstract: The main characteristics of the COMPASS experimental setup for physics with hadron beams are described. This setup was designed to perform exclusive measurements of processes with several charged and/or neutral particles in the final state. Making use of a large part of the apparatus that was previously built for spin structure studies with a muon beam, it also features a new target system as well as new or upgraded detectors. The hadron setup is able to operate at the high incident hadron flux available at CERN. It is characterised by large angular and momentum coverages, large and nearly flat acceptances, and good two and three-particle mass resolutions. In 2008 and 2009 it was successfully used with positive and negative hadron beams and with liquid hydrogen and solid nuclear targets. This article describes the new and upgraded detectors and auxiliary equipment, outlines the reconstruction procedures used, and summarises the general performance of the setup., Comment: 91 pages, 101 figures and 7 tables
Published: 2015

46. Measurement of the Collins and Sivers asymmetries on transversely polarised protons

Author: J. Barth, M.G. Sapozhnikov, D.V. Peshekhonov, Grzegorz Brona, S. Ishimoto, Frank Klein, Gerhard K. Mallot, R. Jahn, G. Pesaro, A. Vossen, F. Sozzi, Johannes Bernhard, A. Guskov, M. Maggiora, R. Bertini, Andrea Ferrero, M. Stolarski, P. Schiavon, A. Bravar, A.A. Lednev, S. Sosio, M. Bettinelli, M. Krämer, S. Koblitz, S. Takekawa, Andrea Bressan, I. Gnesi, L. Lauser, J. Nassalski, M. Ziembicki, I. Konorov, S.S. Dasgupta, A. Korzenev, A. Nagaytsev, F. Balestra, M. Slunecka, F. Nerling, O.P. Gavrichtchouk, L. Sinha, T. Matsuda, Norihiro Doshita, G. Sbrizza, F. Haas, R. Geyer, C. Franco, N. d'Hose, M. V. Zavertyaev, A. El Alaoui, S. Gerassimov, N. Horikawa, G. Jegou, Yu. Ivanshin, Yu. Alexandrov, Sergey Donskov, Bakur Parsamyan, S. Paul, B. Gobbo, A. Srnka, C. Quintans, S. Tessaro, A. N. Sissakian, Yu.V. Mikhailov, G.I. Smirnov, Fabrice Gautheron, W. Schröder, A. Zvyagin, A. Austregesilo, R. Gazda, C. Elia, S. Das, K. Kondo, O.Yu. Denisov, Achim Richter, F. Massmann, S. Ramos, G. Piragino, H. Santos, Yu.A. Khokhlov, N. I. Zhuravlev, M. A. Faessler, Y. Bedfer, Takahiro Iwata, S. Uhl, M. Giorgi, Franco Bradamante, C. Marchand, D. Neyret, A.V. Efremov, R. Konopka, A. Teufel, T. Nagel, S. Schopferer, V.Yu. Alexakhin, W. Eyrich, L. Dhara, J. Pretz, Aram Kotzinian, A. Král, R. Windmolders, R. Kuhn, A. Mutter, P.D. Eversheim, B. Badelek, I.A. Savin, K. Kowalik, E. Kabuss, D. von Harrach, J. Kiefer, K. Zaremba, W. Kafer, S.-U. Chung, J. Marzec, Yu. Kisselev, V.A. Polyakov, R. Sulej, A. Lehmann, L. G. Tkatchev, T. Michigami, P. Jasinski, St. Goertz, B. Ketzer, F. Robinet, A. Filin, S. Grabmüller, Anne-Laure Martin, F. Tessarotto, M. L. Colantoni, E.V. Komissarov, I. Uman, L. Schmitt, F. Kunne, François Herrmann, A. Amoroso, Moinester, H.-W. Siebert, M. Ostrick, V. Diaz, K. Klimaszewski, V.N. Kolosov, Ch. Höppner, R. Hermann, A. Sandacz, T. Schlüter, Andres Cicuttin, E. Burtin, G. Reicherz, V.F. Konstantinov, J.M. Friedrich, Q. Weitzel, S. Neubert, Miroslav Sulc, F. Hinterberger, Christian Schill, S. Dalla Torre, E. Perevalova, J. Pochodzalla, V.D. Samoylenko, S. Platchkov, J. Bisplinghoff, R. Panknin, H. Fischer, M.G. Alekseev, D. Chaberny, Elena Rocco, J. Ball, P. Bordalo, B. Grube, G.B. Pontecorvo, R. Joosten, A. Mann, E. Zemlyanichkina, G.V. Khaustov, D. Kang, K. Königsmann, W. Meyer, Maria Liz Crespo, G. D. Alexeev, C. Ilgner, W. Dünnweber, A. Maggiora, A. Grasso, R. Birsa, J. Lichtenstadt, C. Hess, F.H. Heinsius, A.G. Olshevsky, M. Chiosso, K. Kurek, A. Padee, A. Magnon, J. Polak, S. Sarkar, J.H. Koivuniemi, B. Pawlukiewicz-Kaminska, V. Rapatsky, Jean-Francois Rajotte, D.I. Ryabchikov, A.S. Nunes, D. Panzieri, T. Liška, R. Gushterski, T. Hasegawa, E. Rondio, M.P. Bussa, O.M. Kouznetsov, Z.V. Kroumchtein, J. M. Le Goff, V. Duic, T. Negrini, J. Zhao, W. Wislicki, Laura Silva, Oleg V. Ivanov, H. Wollny, M. Virius, N.V. Vlassov, Günter Baum, O.Yu. Shevchenko, S. Levorato, V.I. Nikolaenko, R. Garfagnini, M. Finger, Alekseev, M. G., Alexakhin, V. Y. u., Alexandrov, Y. u., Alexeev, G. D., Amoroso, A., Austregesilo, A., Badełek, B., Balestra, F., Ball, J., Barth, J., Baum, G., Bedfer, Y., Bernhard, J., Bertini, R., Bettinelli, M., Birsa, Renato, Bisplinghoff, J., Bordalo, P., Bradamante, Franco, Bravar, A., Bressan, Andrea, Brona, G., Burtin, E., Bussa, M. P., Chaberny, D., Chiosso, M., Chung, S. U., Cicuttin, A., Colantoni, M., Crespo, M. L., DALLA TORRE, Silvia, Das, S., Dasgupta, S. S., Denisov, O. Y. u., Dhara, L., Diaz, V., Donskov, S. V., Doshita, N., Duic, Venicio, Dünnweber, W., Efremov, A., El Alaoui, A., Elia, C., Eversheim, P. D., Eyrich, W., Faessler, M., Ferrero, A., Filin, A., Finger, M., Fischer, H., Franco, C., Friedrich, J. M., Garfagnini, R., Gautheron, F., Gavrichtchouk, O. P., Gazda, R., Gerassimov, S., Geyer, R., Giorgi, Marcello, Gnesi, I., Gobbo, B., Goertz, S., Grabmüller, S., Grasso, A., Grube, B., Gushterski, R., Guskov, A., Haas, F., von Harrach, D., Hasegawa, T., Heinsius, F. H., Hermann, R., Herrmann, F., Heß, C., Hinterberger, F., Horikawa, N., Höppner, C. h., D'Hose, N., Ilgner, C., Ishimoto, S., Ivanov, O., Ivanshin, Y. u., Iwata, T., Jahn, R., Jasinski, P., Jegou, G., Joosten, R., Kabuß, E., Käfer, W., Kang, D., Ketzer, B., Khaustov, G. V., Khokhlov, Y. u. A., Kisselev, Y. u., Klein, F., Klimaszewski, K., Koblitz, S., Koivuniemi, J. H., Kolosov, V. N., Kondo, K., Königsmann, K., Konopka, R., Konorov, I., Konstantinov, V. F., Korzenev, A., Kotzinian, A. M., Kouznetsov, O., Kowalik, K., Krämer, M., Kral, A., Kroumchtein, Z. V., Kuhn, R., Kunne, F., Kurek, K., Lauser, L., Le Goff, J. M., Lednev, A. A., Lehmann, A., Levorato, Stefano, Lichtenstadt, J., Liska, T., Maggiora, A., Maggiora, M., Magnon, A., Mallot, G. K., Mann, A., Marchand, C., Martin, Anna, Marzec, J., Massmann, F., Matsuda, T., Meyer, W., Michigami, T., Mikhailov, Y. u. V., Moinester, M. A., Mutter, A., Nagaytsev, A., Nagel, T., Nassalski, J., Negrini, T., Nerling, F., Neubert, S., Neyret, D., Nikolaenko, V. I., Nunes, A. S., Olshevsky, A. G., Ostrick, M., Padee, A., Panknin, R., Panzieri, D., Parsamyan, B., Paul, S., Pawlukiewicz Kaminska, B., Perevalova, E., Pesaro, Giulia, Peshekhonov, D. V., Piragino, G., Platchkov, S., Pochodzalla, J., Polak, J., Polyakov, V. A., Pontecorvo, G., Pretz, J., Quintans, C., Rajotte, J. F., Ramos, S., Rapatsky, V., Reicherz, G., Richter, A., Robinet, F., Rocco, E., Rondio, E., Ryabchikov, D. I., Samoylenko, V. D., Sandacz, A., Santos, H., Sapozhnikov, M. G., Sarkar, S., Savin, I. A., Sbrizzai, Giulio, Schiavon, Paolo, Schill, C., Schlüter, T., Schmitt, L., Schopferer, S., Schröder, W., Shevchenko, O. Y. u., Siebert, H. W., Silva, L., Sinha, L., Sissakian, A. N., Slunecka, M., Smirnov, G. I., Sosio, S., Sozzi, Federica, Srnka, A., Stolarski, M., Sulc, M., Sulej, R., Takekawa, Stefano, Tessaro, S., Tessarotto, F., Teufel, A., Tkatchev, L. G., Uhl, S., Uman, I., Virius, M., Vlassov, N. V., Vossen, A., Weitzel, Q., Windmolders, R., Wiślicki, W., Wollny, H., Zaremba, K., Zavertyaev, M., Zemlyanichkina, E., Ziembicki, M., Zhao, J., Zhuravlev, N., and Zvyaginy, A.
Subjects: Quark, Nuclear and High Energy Physics, Particle physics, Proton, media_common.quotation_subject, Sivers asymmetry, Nuclear Theory, Hadron, FOS: Physical sciences, Inelastic scattering, 01 natural sciences, Asymmetry, COMPASS, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), 0103 physical sciences, Transverse spin effect, Nuclear Experiment, 010306 general physics, media_common, Physics, Muon, Large Hadron Collider, 010308 nuclear & particles physics, High Energy Physics::Phenomenology, Transverse spin effects, Collins asymmetry, Physics::Accelerator Physics, High Energy Physics::Experiment, Particle Physics - Experiment
Abstract: The Collins and Sivers asymmetries for charged hadrons produced in deeply inelastic scattering on transversely polarised protons have been extracted from the data collected in 2007 with the CERN SPS muon beam tuned at 160 GeV/c. At large values of the Bjorken x variable non-zero Collins asymmetries are observed both for positive and negative hadrons while the Sivers asymmetry for positive hadrons is slightly positive over almost all the measured x range. These results nicely support the present theoretical interpretation of these asymmetries, in terms of leading-twist quark distribution and fragmentation functions., 9 Pages, 5 figures
Published: 2010

47. Flavour Separation of Helicity Distributions from Deep Inelastic Muon-Deuteron Scattering

Author: K. Zaremba, Soumen Paul, V.A. Polyakov, R. Kuhn, G. Sbrizzai, A. Amoroso, W. Kafer, M. Virius, R. Panknin, I.A. Savin, F. Haas, M. L. Colantoni, R. Geyer, A. Grasso, R. Gazda, T. Nagel, J. Pretz, A. Bravar, S. Sosio, S. Takekawa, C. Franco, S.-U. Chung, A. Srnka, T. Michigami, D. Neyret, K. Kondo, N.V. Vlassov, François Herrmann, W. Wislicki, Jean-Francois Rajotte, D.I. Ryabchikov, O.P. Gavrichtchouk, Günter Baum, O.Yu. Shevchenko, R. Hermann, A. Mutter, L. Sinha, A. Sandacz, S. Levorato, P. Schiavon, D. Panzieri, Laura Silva, Y. Bedfer, T. Liška, T. Matsuda, E.-M. Kabuss, A. Korzenev, Yu.V. Mikhailov, M. Slunecka, Sayantan Sarkar, V.I. Nikolaenko, A. Zvyagin, H. Santos, D. Reggiani, Yu. Kisselev, R. Birsa, Norihiro Doshita, N. d'Hose, A. Chapiro, M. Ziembicki, J. Marzec, St. Goertz, A. N. Sissakian, A.V. Efremov, W. Eyrich, J. Kiefer, Moinester, R. Garfagnini, M. Finger, A. Nagaytsev, F. Balestra, G. Piragino, G. D. Alexeev, W. Dünnweber, Takahiro Iwata, M. Alekseev, I. Konorov, M. Ostrick, E. Perevalova, F. Tessarotto, M. Krämer, O.A. Grajek, G. Jegou, C. Hess, M. Giorgi, M.G. Sapozhnikov, S. Negrini, A. Austregesilo, Yu. Alexandrov, Oleg V. Ivanov, H. Wollny, K. Kowalik, C. Quintans, D.V. Peshekhonov, F.H. Heinsius, G.B. Pontecorvo, A. M. Kotzinian, G.I. Smirnov, J. Marroncle, Bakur Parsamyan, R. Joosten, Fabrice Gautheron, M. A. Faessler, G. Pesaro, L. G. Tkatchev, S. Neubert, V.Yu. Alexakhin, M. Stolarski, Anne-Laure Martin, R. Bertini, S. Das, R. Sulej, L. Schmitt, O.Yu. Denisov, R. Jahn, A. Ferrero, Franco Bradamante, E.V. Komissarov, A.M. Dinkelbach, F. Kunne, P.D. Eversheim, P. Bordalo, J. Nassalski, A.A. Lednev, Miroslav Sulc, F. Hinterberger, E. Burtin, V.F. Konstantinov, J. Ball, A. Mann, Q. Weitzel, F. Nerling, B. Grube, H. Fischer, H.-W. Siebert, K. Wenzl, S. Ishimoto, Frank Klein, Johannes Bernhard, A. Guskov, M. Bettinelli, S. Platchkov, Andrea Bressan, Yu. Ivanshin, L. Dhara, B. Badelek, B. Ketzer, F. Robinet, J.M. Friedrich, J. Bisplinghoff, E. Zemlyanichkina, D. von Harrach, G.V. Khaustov, W. Meyer, Maria Liz Crespo, C. Ilgner, Z.V. Kroumchtein, A. Maximov, V.D. Samoylenko, Elena Rocco, A.G. Olshevsky, J. Zhao, A. Magnon, J. Polak, J.H. Koivuniemi, B. Gobbo, W. Schröder, N. I. Zhuravlev, R. Konopka, A. Teufel, B. Pawlukiewicz-Kaminska, V. Rapatsky, S.S. Dasgupta, V.N. Kolosov, R. Hagemann, Christian Schill, M. Chiosso, T. Dafni, K. Kurek, A. Padee, A. Král, R. Windmolders, T. Hasegawa, E. Rondio, M.P. Bussa, O.M. Kouznetsov, P. Jasinski, J. Barth, J. M. Le Goff, Grzegorz Brona, Gerhard K. Mallot, A. Vossen, F. Sozzi, D. Kang, V. Duic, A. El Alaoui, S. Gerassimov, N. Horikawa, K. Königsmann, Sergey Donskov, S. Koblitz, S. Tessaro, Yu.A. Khokhlov, Ch. Höppner, A. Maggiora, Achim Richter, F. Massmann, S. Ramos, M. V. Zavertyaev, G. Venugopal, C. Marchand, A. Lehmann, V. Diaz, K. Klimaszewski, M. Maggiora, Andres Cicuttin, G. Reicherz, S. Dalla Torre, S. Grabmüller, R. Gushterski, J. Heckmann, J. Pochodzalla, J. Lichtenstadt, Alekseev, M., Alexakhin, V. Y., Alexandrov, Y., Alexeev, G. D., Amoroso, A., Austregesilo, A., Badelek, B., Balestra, F., Ball, J., Barth, J., Baum, G., Bedfer, Y., Bernhard, J., Bertini, R., Bettinelli, M., Birsa, Renato, Bisplinghoff, J., Bordalo, P., Bradamante, Franco, Bravar, A., Bressan, Andrea, Brona, G., Burtin, E., Bussa, M. P., Chapiro, A., Chiosso, M., Chung, S. U., Cicuttin, A., Colantoni, M., Crespo, M. L., DALLA TORRE, Silvia, Dafni, T., Das, S., Dasgupta, S. S., Denisov, O. Y., Dhara, L., Diaz, V., Dinkelbach, A. M., Donskov, S. V., Doshita, N., Duic, Venicio, Dunnweber, W., Efremov, A., El Alaoui, A., Eversheim, P. D., Eyrich, W., Faessler, M., Ferrero, A., Finger, M., Fischer, H., Franco, C., Friedrich, J. M., Garfagnini, R., Gautheron, F., Gavrichtchouk, O. P., Gazda, R., Gerassimov, S., Geyer, R., Giorgi, Marcello, Gobbo, B., Goertz, S., Grabmuller, S., Grajek, O. A., Grasso, A., Grube, B., Gushterski, R., Guskov, A., Haas, F., Hagemann, R., von Harrach, D., Hasegawa, T., Heckmann, J., Heinsius, F. H., Hermann, R., Herrmann, F., Hess, C., Hinterberger, F., Horikawa, N., Hoppner, C., D'Hose, N., Ilgner, C., Ishimoto, S., Ivanov, O., Ivanshin, Y., Iwata, T., Jahn, R., Jasinski, P., Jegou, G., Joosten, R., Kabuss, E., Kafer, W., Kang, D., Ketzer, B., Khaustov, G. V., Khokhlov, Y. A., Kiefer, J., Kisselev, Y., Klein, F., Klimaszewski, K., Koblitz, S., Koivuniemi, J. H., Kolosov, V. N., Komissarov, E. V., Kondo, K., Konigsmann, K., Konopka, R., Konorov, I., Konstantinov, V. F., Korzenev, A., Kotzinian, A. M., Kouznetsov, O., Kowalik, K., Kramer, M., Kral, A., Kroumchtein, Z. V., Kuhn, R., Kunne, F., Kurek, K., Le Goff, J. M., Lednev, A. A., Lehmann, A., Levorato, Stefano, Lichtenstadt, J., Liska, T., Maggiora, A., Maggiora, M., Magnon, A., Mallot, G. K., Mann, A., Marchand, C., Marroncle, J., Martin, Anna, Marzec, J., Massmann, F., Matsuda, T., Maximov, A. N., Meyer, W., Michigami, T., Mikhailov, Y. V., Moinester, M. A., Mutter, A., Nagaytsev, A., Nagel, T., Nassalski, J., Negrini, S., Nerling, F., Neubert, S., Neyret, D., Nikolaenko, V. I., Olshevsky, A. G., Ostrick, M., Padee, A., Panknin, R., Panzieri, D., Parsamyan, B., Paul, S., Pawlukiewicz Kaminska, B., Perevalova, E., Pesaro, Giulia, Peshekhonov, D. V., Piragino, G., Platchkov, S., Pochodzalla, J., Polakl, J., Polyakov, V. A., Pontecorvo, G., Pretz, J., Quintans, C., Rajotte, J. F., Ramos, S., Rapatsky, V., Reicherz, G., Reggiani, D., Richter, A., Robinet, F., Rocco, E., Rondio, E., Ryabchikov, D. I., Samoylenko, V. D., Sandacz, A., Santos, H., Sapozhnikov, M. G., Sarkar, S., Savin, I. A., Sbrizzai, Giulio, Schiavon, Paolo, Schill, C., Schmitt, L., Schroder, W., Shevchenko, O. Y., Siebert, H. W., Silva, L., Sinha, L., Sissakian, A. N., Slunecka, M., Smirnov, G. I., Sosio, S., Sozzi, Federica, Srnka, A., Stolarski, M., Sulc, M., Sulej, R., Takekawa, Stefano, Tessaro, Susanna, Tessarotto, F., Teufel, A., Tkatchev, L. G., Venugopal, G., Virius, M., Viassov, N. V., Vossen, A., Weitzel, Q., Wenzl, K., Windmolders, R., Wislicki, W., Wollny, H., Zaremba, K., Zavertyaev, M., Zemlyanichkina, E., Ziembicki, M., Zhao, J., Zhuravlev, N., and Zvyagin, A.
Subjects: Strange quark, POLARIZED TARGET, Nuclear Theory, VALENCE QUARK DISTRIBUTION, PARTON DISTRIBUTIONS, NUCLEON, PROTON, DIS, Polarised DIS and SIDIS, 01 natural sciences, COMPASS, Parton distribution function, High Energy Physics - Experiment, double-spin asymmetry, helicity density, parton distribution function, flavour sep- aration analysis, polarised DIS and SIDIS reactions, charged kaon asymmetry, polarised DIS and SIDIS reaction, High Energy Physics - Experiment (hep-ex), Helicity density, Nuclear Experiment, media_common, Quantum chromodynamics, Physics, Flavour separation analysis, Helicity, Charged kaon asymmetry, Nucleon, Particle Physics - Experiment, Particle physics, Nuclear and High Energy Physics, reactions, media_common.quotation_subject, FOS: Physical sciences, Asymmetry, Nuclear physics, 0103 physical sciences, flavour sep- aration analysi, Polarised DIS and SIDIS reactions, 010306 general physics, function, Muon, Valence (chemistry), 010308 nuclear & particles physics, Scattering, Parton distribution, High Energy Physics::Experiment, Double-spin asymmetry
Abstract: We present a LO evaluation of helicity densities of valence, \Delta u_v+\Delta d_v, non-strange sea, \Delta\bar{u}+\Delta\bar{d}, and strange quarks, \Delta s (assumed to be equal to \Delta\bar{s}). They have been obtained from the inclusive asymmetry A_{3,d} and the semi-inclusive asymmetries A^{\pi+}_{1,d}, A^{\pi-}_{1,d}, A^{K+}_{1,d}, A^{K-}_{1,d} measured in polarised deep inelastic muon-deuteron scattering. The full deuteron statistics of COMPASS (years 2002-2004 and 2006) has been used. The data cover the range Q^2 > 1 (GeV/c)^2 and 0.004, Comment: 15 pages, 8 figures
Published: 2009

48. Collins and Sivers asymmetries for pions and kaons in muon-deuteron DIS

Author: N. Dedek, Vladimir Peshekhonov, O.P. Gavrichtchouk, R. Birsa, J. Lichtenstadt, R. C. Webb, K. Zaremba, Colin Bernet, A. Srnka, L. Sinha, R. Ziegler, R. Bertini, V.A. Polyakov, D. Kang, K. Königsmann, Andrej Arbuzov, G. Sbrizzai, M. Slunecka, V. Diaz, K. Klimaszewski, Norihiro Doshita, N.P. Kravchuk, W. Wiślicki, A. Amoroso, A.I. Ioukaev, B. Gobbo, S. Gerassimov, N. d'Hose, Massimo Lamanna, Yu. Kisselev, G. Piragino, L. Dhara, C. Ilgner, N. Horikawa, A.M. Dinkelbach, M. Chiosso, W. Schröder, V.P. Sugonyaev, Yu.V. Mikhailov, A. N. Sissakian, Andres Cicuttin, B. Badelek, I. Konorov, Sergey Donskov, T. Iwata, A. Teufel, Yu. Alexandrov, T. Dafni, M. Ostrick, M. Giorgi, A. Maggiora, F. Tessarotto, C. Quintans, G. Reicherz, Jean-Francois Rajotte, B. Ketzer, F. Robinet, S. Paul, S. Tessaro, N.V. Vlassov, K. Kurek, A. Padee, M. von Hodenberg, W. Eyrich, D.I. Ryabchikov, S. Dalla Torre, Günter Baum, O.Yu. Shevchenko, S. Levorato, M. Alekseev, O.Yu. Denisov, F. Kunne, F.H. Heinsius, A.G. Olshevsky, Achim Richter, Z.V. Kroumchtein, A.M. Rozhdestvensky, R. Panknin, E.V. Komissarov, F. Massmann, T. Nagel, J. Pretz, D. Panzieri, S. Ramos, L. Ferrero, A. Magnon, A. Bravar, M.E. Ladygin, S. Sosio, A. Guskov, S. Grabmüller, A. Korzenev, Anne-Laure Martin, N.A. Koutchinski, M.G. Sapozhnikov, T. Matsuda, S. Procureur, G. Venugopal, T. Liška, V.I. Nikolaenko, Yu.A. Khokhlov, H. W. Siebert, C. Heß, D.V. Peshekhonov, M. Bettinelli, L. Schmitt, R. Hermann, E. Rondio, J. Heckmann, Miroslav Sulc, F. Hinterberger, A.V. Efremov, M. Stolarski, Andrea Bressan, C. Franco, A. Janata, A. Grasso, E. M. Kabuß, J. Polak, V.N. Kolosov, A. Sandacz, R. Joosten, R. Garfagnini, J. Nassalski, V.V. Tchalishev, S. Costa, M. Finger, Aram Kotzinian, A. Král, M.P. Bussa, O.M. Kouznetsov, G. Pesaro, P. Schönmeier, Franco Bradamante, R. Windmolders, J.M. Friedrich, J.H. Koivuniemi, E. Burtin, J. Marroncle, K. Kondo, V.F. Konstantinov, Q. Weitzel, J. Pochodzalla, Christian Schill, J. Bisplinghoff, I.A. Savin, Oleg V. Ivanov, H. Wollny, S. Panebianco, D. Reggiani, A. Lehmann, R. De Masi, P. Bordalo, Laura Silva, Y. Bedfer, B. Pawlukiewicz-Kaminska, M. L. Colantoni, P.D. Eversheim, J. M. Le Goff, V. Rapatsky, V.A. Dorofeev, E. Zemlyanichkina, Paolo Pagano, H. Fischer, S. Wirth, J. Ball, V. Duic, P. Schiavon, J. Hannappel, R. Gazda, M. V. Zavertyaev, A. Nagaytsev, K. Nikolaev, F. Balestra, P. Jasinski, J. Zhao, T. Hasegawa, V. Falaleev, V. Frolov, S.S. Dasgupta, A. Mann, A. Chapiro, S. Koblitz, D. Neyret, C. Marchand, Murray Moinester, A. Mutter, L. G. Tkatchev, F. Stinzing, R. Gushterski, J. Barth, A.S. Korentchenko, J. Marzec, St. Goertz, J. Franz, M. Virius, R. Kuhn, S. Neubert, Grzegorz Brona, Gerhard K. Mallot, E. Weise, O. Nähle, A. Vossen, F. Sozzi, S. Neliba, F. Haas, R. Geyer, G. D. Alexeev, W. Dünnweber, G.I. Smirnov, Fabrice Gautheron, M. A. Faessler, V.Yu. Alexakhin, R. Sulej, A. Mielech, S. Ishimoto, Frank Klein, S. Platchkov, M. Maggiora, Yu. Ivanshin, A. Gorin, O.A. Grajek, Sarit K. Das, B. Grube, S. Sarkar, D. von Harrach, A. Maximov, V.D. Samoylenko, Elena Rocco, G.V. Khaustov, N.I. Jouravlev, S. Horikawa, W. Meyer, Maria Liz Crespo, A. Zvyagin, H. Santos, R. Jahn, A. Ferrero, A.A. Lednev, I. Ludwig, F. Nerling, S. Hedicke, Alelseev, M., Alexakhin, V. Y., Alexandrov, Y., Alexeev, G. D., Amoroso, A., Arbuzov, A., Badelek, B., Balestra, F., Ball, J., Barth, J., Baum, G., Bedfer, Y., Bernet, C., Bertini, R., Bettinelli, M., Birsa, R., Bisplinghoff, J., Bordalo, P., Bradamante, Franco, Bravar, A., Bressan, Andrea, Brona, G., Burtin, E., Bussa, M. P., Chapiro, A., Chiosso, M., Cicuttin, A., Colantoni, M., Costa, S., Crespo, M. L., Torre, S. D., Dafni, T., Das, S., Dasgupta, S. S., De Masi, R., Dedek, N., Denisov, O. Y., Dhara, L., Diaz, V., Dinkelbach, A. M., Donskov, S. V., Dorofeev, V. A., Doshita, N., Duic, Venicio, Dunnweber, W., Efremov, A. V., Eversheim, P. D., Eyrich, W., Faessler, M., Falaleev, V., Ferrero, A., Ferrero, L., Finger, M., Fischer, H., Franco, C., Franz, J., Friedrich, J. M., Frolov, V., Garfagnini, R., Gautheron, F., Gavrichtchouk, O. R., Gazda, R., Gerassimov, S., Geyer, R., Giorgi, Marcello, Gobbo, B., Goertz, S., Gorin, A. M., Grabmuller, S., Grajek, O. A., Grasso, A., Grube, B., Gushterski, R., Guskov, A., Haas, F., Hannappel, J., von Harrach, D., Hasegawa, T., Heckmann, J., Hedicke, S., Heinsius, F. H., Hermann, R., Hess, C., Hinterberger, F., von Hodenberg, M., Horikawa, N., Horikawa, S., D'Hose, N., Ilgner, C., Loukaev, A. I., Ishimoto, S., Ivanov, O., Ivanshin, Y., Iwata, T., Jahn, R., Janata, A., Jasinski, P., Jouravlev, N. I., Kabuss, E., Kang, D., Ketzer, B., Khaustov, G. V., Khokhlov, Y. A., Kisselev, Y., Klein, F., Klimaszewski, K., Koblitz, S., Koivuniemi, J. H., Kolosov, V. N., Komissarov, E. V., Kondo, K., Konigsmann, K., Konorov, I., Konstantinov, V. F., Korentchenko, A. S., Korzenev, A., Kotzinian, A. M., Koutchinski, N. A., Kouznetsov, O., Kral, A., Kravchuk, N. P., Kroumchtein, Z. V., Kuhn, R., Kunne, F., Kurek, K., Ladygin, M. E., Lamanna, M., Le Goff, J. M., Lednev, A. A., Lehmann, A., Levorato, Stefano, Lichtenstadt, J., Liska, T., Ludwig, I., Maggiora, A., Maggiora, M., Magnon, A., Mallot, G. K., Mann, A., Marchand, C., Marroncle, J., Martin, Anna, Marzec, J., Massmann, F., Matsuda, T., Maximov, A. N., Meyer, W., Mielech, A., Mikhailov, Y. V., Moinester, M. A., Mutter, A., Nagaytsev, A., Nagel, T., Nahle, O., Nassalski, J., Neliba, S., Nerling, F., Neubert, S., Neyret, D. P., Nikolaenko, V. I., Nikolaev, K., Olshevsky, A. G., Ostrick, M., Padee, A., Pagano, P., Panebianco, S., Panknin, R., Panzieri, D., Paul, S., Pawlukiewicz Kaminska, B., Pesaro, Giulia, Peshekhonov, D. V., Peshekhonov, V. D., Piragino, G., Platchkov, S., Pochodzalla, J., Polak, J., Polyakov, V. A., Pretz, J., Procureur, S., Quintans, C., Rajotte, J. F., Ramos, S., Rapatsky, V., Reicherz, G., Reggiani, D., Richter, A., Robinet, F., Rocco, E., Rondio, E., Rozhdestvensky, A. M., Ryabchikov, D. I., Samoylenko, V. D., Sandacz, A., Santos, H., Sapozhnikov, M. G., Sarkar, S., Savin, I. A., Sbrizzai, Giulio, Schiavon, Paolo, Schill, C., Schmitt, L., Schonmeier, P., Schroder, W., Shevchenko, O. Y., Siebert, H. W., Silva, L., Sinha, L., Sissakian, A. N., Slunecka, M., Smirnov, G. I., Sosio, S., Sozzi, Federica, Srnka, A., Stinzing, F., Stolarski, M., Sugonyaev, V. P., Sulc, M., Sulej, R., Tchalishev, V. V., Tessaro, S., Tessarotto, F., Teufel, A., Tkatchev, L. G., Venugopal, G., Virius, M., Vlassov, N. V., Vossen, A., Webb, R., Weise, E., Weitzel, Q., Windmolders, R., Wirth, S., Wislicki, W., Wollny, H., Zaremba, K., Zavertyaev, M., Zemlyanichkina, E., Zhao, J., Ziegler, R., and Zvyagin, A.
Subjects: Quark, Nuclear and High Energy Physics, Particle physics, Sivers asymmetry, Hadron, Nuclear Theory, FOS: Physical sciences, 01 natural sciences, COMPASS, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), Pion, Identified, Compass, 0103 physical sciences, Transverse spin effects, Deuteron, Collins asymmetry, Transverse spin effect, 010306 general physics, Nuclear Experiment, Physics, Muon, 010308 nuclear & particles physics, Scattering, High Energy Physics::Phenomenology, Transverse single-spin asymmetry, hadrons, Deuterium, Transversity, High Energy Physics::Experiment
Abstract: The measurements of the Collins and Sivers asymmetries of identified hadrons produced in deep-inelastic scattering of 160 GeV/c muons on a transversely polarised 6LiD target at COMPASS are presented. The results for charged pions and charged and neutral kaons correspond to all data available, which were collected from 2002 to 2004. For all final state particles both the Collins and Sivers asymmetries turn out to be small, compatible with zero within the statistical errors, in line with the previously published results for not identified charged hadrons, and with the expected cancellation between the u- and d-quark contributions., Comment: 16 pages, 9 figures, added author Efremov, calculated pure kaon asymmetries instead of those for experimental kaon/pion mixture (mainly error affected)
Published: 2009

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