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222 results on '"Hakobyan, R S."'

16. Evidence for a backward peak in the γd → π0d cross section near the η threshold

Author

Ilieva, Y., Berman, B. L., Kudryavtsev, A. E., Strakovsky, I. I., Tarasov, V. E., Amarian, M., Ambrozewicz, P., Anghinolfi, M., Asryan, G., Avakian, H., Bagdasaryan, H., Baillie, N., Ball, J. P., Baltzell, N. A., Batourine, V., Battaglieri, M., Bedlinskiy, I., Bellis, M., Benmouna, N., Biselli, A. S., Bouchigny, S., Boiarinov, S., Bradford, R., Branford, D., Briscoe, W. J., Brooks, W. K., Bültmann, S., Burkert, V. D., Butuceanu, C., Calarco, J. R., Careccia, S. L., Carman, D. S., Chen, S., Cole, P. L., Collins, P., Coltharp, P., Crabb, D., Crede, V., De Masi, R., De Sanctis, E., De Vita, R., Degtyarenko, P. V., Deur, A., Dickson, R., Djalali, C., Dodge, G. E., Donnelly, J., Doughty, D., Dugger, M., Dzyubak, O. P., Egiyan, H., Egiyan, K. S., Elouadrhiri, L., Eugenio, P., Fedotov, G., Feldman, G., Funsten, H., Garçon, M., Gavalian, G., Gilfoyle, G. P., Giovanetti, K. L., Girod, F. X., Goetz, J. T., Gonenc, A., Gothe, R. W., Griffioen, K. A., Guidal, M., Guler, N., Guo, L., Gyurjyan, V., Hafidi, K., Hakobyan, R. S., Hersman, F. W., Hicks, K., Hleiqawi, I., Holtrop, M., Hyde-Wright, C. E., Ireland, D. G., Ishkhanov, B. S., Isupov, E. L., Ito, M. M., Jenkins, D., Jo, H. S., Joo, K., Juengst, H. G., Kalantarians, N., Kellie, J. D., Khandaker, M., Kim, W., Klein, A., Klein, F. J., Kossov, M., Krahn, Z., Kramer, L. H., Kubarovsky, V., Kuhn, J., Kuhn, S. E., Kuleshov, S. V., Lachniet, J., Laget, J. M., Langheinrich, J., Lawrence, D., Livingston, K., Lu, H., MacCormick, M., Markov, N., McKinnon, B., Mecking, B. A., Mestayer, M. D., Meyer, C. A., Mibe, T., Mikhailov, K., Mirazita, M., Miskimen, R., Mokeev, V., Moriya, K., Morrow, S. A., Moteabbed, M., Munevar, E., Mutchler, G. S., Nadel-Turonski, P., Nasseripour, R., Niccolai, S., Niculescu, G., Niculescu, I., Niczyporuk, B. B., Niroula, M. R., Niyazov, R. A., Nozar, M., Osipenko, M., Ostrovidov, A. I., Park, K., Pasyuk, E., Paterson, C., Pierce, J., Pivnyuk, N., Pogorelko, O., Pozdniakov, S., Price, J. W., Prok, Y., Protopopescu, D., Raue, B. A., Ricco, G., Ripani, M., Ritchie, B. G., Ronchetti, F., Rosner, G., Rossi, P., Sabatié, F., Salgado, C., Santoro, J. P., Sapunenko, V., Schumacher, R. A., Serov, V. S., Sharabian, Y. G., Shvedunov, N. V., Smith, E. S., Smith, L. C., Sober, D. I., Stavinsky, A., Stepanyan, S. S., Stepanyan, S., Stokes, B. E., Stoler, P., Strauch, S., Taiuti, M., Tedeschi, D. J., Thoma, U., Tkabladze, A., Tkachenko, S., Tur, C., Ungaro, M., Vineyard, M. F., Vlassov, A. V., Watts, D. P., Weinstein, L. B., Weygand, D. P., Williams, M., Wolin, E., Wood, M. H., Yegneswaran, A., Zana, L., Zhang, J., Zhao, B., Zhao, Z., and The CLAS Collaboration

Published
2010
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18. Deeply virtual and exclusive electroproduction of ω-mesons

Author

Morand, L., Doré, D., Garçon, M., Guidal, M., Laget, J. -M., Morrow, S., Sabatié, F., Smith, E., Adams, G., Ambrozewicz, P., Anghinolfi, M., Asryan, G., Audit, G., Avakian, H., Bagdasaryan, H., Ball, J., Ball, J. P., Baltzell, N. A., Barrow, S., Batourine, V., Battaglieri, M., Bektasoglu, M., Bellis, M., Benmouna, N., Berman, B. L., Biselli, A. S., Boiarinov, S., Bonner, B. E., Bouchigny, S., Bradford, R., Branford, D., Briscoe, W. J., Brooks, W. K., Bültmann, S., Burkert, V. D., Butuceanu, C., Calarco, J. R., Careccia, S. L., Carman, D. S., Cazes, A., Chen, S., Cole, P. L., Cords, D., Corvisiero, P., Crabb, D., Cummings, J. P., De Sanctis, E., DeVita, R., Degtyarenko, P. V., Denizli, H., Dennis, L., Deur, A., Dharmawardane, K. V., Dhuga, K. S., Djalali, C., Dodge, G. E., Donnelly, J., Doughty, D., Dugger, M., Dytman, S., Dzyubak, O. P., Egiyan, H., Egiyan, K. S., Elouadrhiri, L., Eugenio, P., Fatemi, R., Feldman, G., Fersch, R. G., Feuerbach, R. J., Funsten, H., Gavalian, G., Gilfoyle, G. P., Giovanetti, K. L., Girod, F. -X., Goetz, J. T., Gordon, C. I. O., Gothe, R. W., Griffioen, K. A., Guillo, M., Guler, N., Guo, L., Gyurjyan, V., Hadjidakis, C., Hakobyan, R. S., Hardie, J., Heddle, D., Hersman, F. W., Hicks, K., Hleiqawi, I., Holtrop, M., Hyde-Wright, C. E., Ilieva, Y., Ireland, D. G., Ito, M. M., Jenkins, D., Jo, H. -S., Joo, K., Juengst, H. G., Kellie, J. D., Khandaker, M., Kim, W., Klein, A., Klein, F. J., Klimenko, A. V., Kossov, M., Kubarovski, V., Kramer, L. H., Kuhn, S. E., Kuhn, J., Lachniet, J., Langheinrich, J., Lawrence, D., Lee, T., Li, Ji, Livingston, K., Marchand, C., Maximon, L. C., McAleer, S., McKinnon, B., McNabb, J. W. C., Mecking, B. A., Mehrabyan, S., Melone, J. J., Mestayer, M. D., Meyer, C. A., Mikhailov, K., Minehart, R., Mirazita, M., Miskimen, R., Mokeev, V., Mueller, J., Mutchler, G. S., Napolitano, J., Nasseripour, R., Niccolai, S., Niculescu, G., Niculescu, I., Niczyporuk, B. B., Niyazov, R. A., Nozar, M., O’Rielly, G. V., Osipenko, M., Ostrovidov, A. I., Park, K., Pasyuk, E., Philips, S. A., Pivnyuk, N., Pocanic, D., Pogorelko, O., Polli, E., Popa, I., Pozdniakov, S., Preedom, B. M., Price, J. W., Prok, Y., Protopopescu, D., Raue, B. A., Riccardi, G., Ricco, G., Ripani, M., Ritchie, B. G., Ronchetti, F., Rosner, G., Rossi, P., Rubin, P. D., Salgado, C., Santoro, J. P., Sapunenko, V., Schumacher, R. A., Serov, V. S., Sharabian, Y. G., Shaw, J., Skabelin, A. V., Smith, L. C., Sober, D. I., Stavinsky, A., Stepanyan, S., Stepanyan, S. S., Stokes, B. E., Stoler, P., Strakovsky, I. I., Strauch, S., Taiuti, M., Tedeschi, D. J., Thoma, U., Tkabladze, A., Todor, L., Tur, C., Ungaro, M., Vineyard, M. F., Vlassov, A. V., Weinstein, L. B., Weygand, D. P., Williams, M., Wolin, E., Wood, M. H., Yegneswaran, A., Zana, L., and The CLAS Collaboration

Published
2005
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26. Factorial moments and correlations in meson-nucleus interactions at 250 GeV/c

Author

Botterweck, F., Charlet, M., Chliapnikov, P. V., De Roeck, A., De Wolf, E. A., Dziunikowska, K., Endler, A. M. F., Eskreys, A., Gavrjusev, V. G., Hakobyan, R. S., Haupt, T., Karamyan, J. K., Kaleba, K., Kisielewska, D., Kittel, W., Levchenko, B. B., Michałowska, A. B., Olkiewicz, K., Shabalina, E. S., Tchikilev, O. G., Uvarov, V. A., Verbeure, F., Wischnewski, R., and EHS-NA22 Collaboration

Published
1991
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29. Multilayer Anisotropic Thin Film with a Twist.

Author

Sargsyan, M. L., Hakobyan, M. R., and Hakobyan, R. S.

Subjects
THIN films, DIFFRACTION gratings, BEAM splitters, FERROELECTRIC thin films, MULTILAYERED thin films
Abstract

We describe a birefringent thin film as a waveplate for polarization conversion, a system of birefringent thin films for photonics bandgaps and achromatization of functionality, birefringent thin film with a twist and multilayer CDW coatings. A theory of a broadband thin-film polarizing beam splitter based on an anisotropic cycloidal diffraction grating is proposed. The achromatization of the grating is provided by creating two-layer chiral structures with an opposite twist sense. Such a system has almost 100% efficiency. The calculations were carried out by the Jones matrix method. The resulting efficiency and bandwidth are higher than the previously known results. [ABSTRACT FROM AUTHOR]

Published
2020

30. Thermomechanical mechanism of orientational optical nonlinearity in twisted nematic liquid crystals.

Author

Poursamad, J. B., Aleksanyan, A. K., and Hakobyan, R. S.

Subjects
THERMOMECHANICS of magnetic fluids, LIQUID crystals, GAUSSIAN beams, LASER beams, NONLINEAR theories
Abstract

In a nonuniform nematic liquid crystal director reorientation may take place as a result of a temperature gradient. We formulated a two-dimensional model of the temperature gradient caused by the light absorption of a Gaussian laser beam impinging normally on the liquid crystal cell. Within this model, we calculated the director reorientation and the subsequent optical nonlinearity of the liquid crystal. [ABSTRACT FROM AUTHOR]

Published
2010
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31. Light energy accumulation by cholesteric liquid crystal layer at oblique incidence.

Author

Rafayelyan, M. S., Gharagulyan, H., Sarukhanyan, T. M., Gevorgyan, A. H., Hakobyan, R. S., and Alaverdyan, R. B.

Subjects
LIGHT, CHOLESTERIC liquid crystals, LIGHT transmission, LIGHT propagation, OPTICAL reflection, DENSITY of states
Abstract

Oblique propagation of light through a planar layer of a cholesteric liquid crystal (CLC) is solved by Ambartsumian's modified layer addition method. Two cases are considered, namely, the case when dielectric boundaries have a minimum influence on light transmission and the case when the CLC layer is in a vacuum. It is shown that in the first case a total internal reflection can happen for the fast eigen-mode at large incidence angles. New important features of light reflection (transmission) spectra, photonic density of states and accumulated energy density in the CLC layer are studied. The light localisation peculiarities in the CLC layer at oblique incidence is investigated too. It is shown that the light localisation for both the long-wavelength edge mode and the short-wavelength edge mode changes differently when the incidence angle changes. The obtained results can be used in the design of low-threshold lasers, in solar cell systems, in chiral photonics, in systems strongly absorbing light at certain wavelengths and when designing systems with absorption suppression created on the base of absorbing media, etc. [ABSTRACT FROM AUTHOR]

Published
2019
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32. Femtosecond Pulse Shaping With Spatial--Light Modulator Based On Twist Nematic With Homeotropic Boundary Conditions.

Author

Grigoryan, A. P., Hakobyan, M. R., and Hakobyan, R. S.

Subjects
FEMTOSECOND pulses, SPATIAL light modulators, LIQUID crystals
Abstract

The possibility of femtosecond optical pulses shaping using a spatial--light modulator (SLM) based on the twisted nematic (TN) liquid crystal with homeotropic boundary conditions is theoretically considered. Phase sensitive pulse shaping using a TNSLM and the shaped waveforms are calculated. Using this kind of LC structure allows to control shaping process by electrical fields with voltages much less than 1V. [ABSTRACT FROM AUTHOR]

Published
2017

33. Evidence for a backward peak in the gamma d -> pi(0)d cross section near the eta threshold

Author

Ilieva, Y., Berman, B. L., Kudryavtsev, A. E., Strakovsky, I. I., Tarasov, V. E., Amarian, M., Ambrozewicz, P., Anghinolfi, M., Asryan, G., Avakian, H., Bagdasaryan, H., Baillie, N., Ball, J. P., Baltzell, N. A., Batourine, V., Battaglieri, M., Bedlinskiy, I., Bellis, M., Benmouna, N., Biselli, A. S., Bouchigny, S., Boiarinov, S., Bradford, R., Branford, D., Briscoe, W. J., Brooks, W. K., Bültmann, S., Burkert, V. D., Butuceanu, C., Calarco, J. R., Careccia, S. L., Carman, D. S., Chen, S., Cole, P. L., Collins, P., Coltharp, P., Crabb, D., Crede, V., De Masi, R., De Sanctis, E., De Vita, R., Degtyarenko, P. V., Deur, A., Dickson, R., Djalali, C., Dodge, G. E., Donnelly, J., Doughty, D., Dugger, M., Dzyubak, O. P., Egiyan, H., Egiyan, K. S., Elouadrhiri, L., Eugenio, P., Fedotov, G., Feldman, G., Funsten, H., Garçon, M., Gavalian, G., Gilfoyle, G. P., Giovanetti, K. L., Girod, F. X., Goetz, J. T., Gonenc, A., Gothe, R. W., Griffioen, K. A., Guidal, M., Guler, N., Guo, L., Gyurjyan, V., Hafidi, K., Hakobyan, R. S., Hersman, F. W., Hicks, K., Hleiqawi, I., Holtrop, M., Hyde Wright, C. E., Ireland, D. G., Ishkhanov, B. S., Isupov, E. L., Ito, M. M., Jenkins, D., H. S., Jo, Joo, K., Juengst, H. G., Kalantarians, N., Kellie, J. D., Khandaker, M., Kim, W., Klein, A., Klein, F. J., Kossov, M., Krahn, Z., Kramer, L. H., Kubarovsky, V., Kuhn, J., Kuhn, S. E., Kuleshov, S. V., Lachniet, J., Laget, J. M., Langheinrich, J., Lawrence, D., Livingston, K., Lu, H., Maccormick, M., Markov, N., Mckinnon, B., Mecking, B. A., Mestayer, M. D., Meyer, C. A., Mibe, T., Mikhailov, K., Mirazita, M., Miskimen, R., Mokeev, V., Moriya, K., Morrow, S. A., Moteabbed, M., Munevar, E., Mutchler, G. S., Nadel Turonski, P., Nasseripour, R., Niccolai, S., Niculescu, G., Niculescu, I., Niczyporuk, B. B., Niroula, M. R., Niyazov, R. A., Nozar, M., Osipenko, M., Ostrovidov, A. I., Park, K., Pasyuk, E., Paterson, C., Pierce, J., Pivnyuk, N., Pogorelko, O., Pozdniakov, S., Price, J. W., Prok, Y., Protopopescu, D., Raue, B. A., Ricco, Giovanni, Ripani, M., Ritchie, B. G., Ronchetti, F., Rosner, G., Rossi, P., Sabatié, F., Salgado, C., Santoro, J. P., Sapunenko, V., Schumacher, R. A., Serov, V. S., Sharabian, Y. G., Shvedunov, N. V., Smith, E. S., Smith, L. C., Sober, D. I., Stavinsky, A., Stepanyan, S. S., Stepanyan, S., Stokes, B. E., Stoler, P., Strauch, S., Taiuti, MAURO GINO, Tedeschi, D. J., Thoma, U., Tkabladze, A., Tkachenko, S., Tur, C., Ungaro, M., Vineyard, M. F., Vlassov, A. V., Watts, D. P., Weinstein, L. B., Weygand, D. P., Williams, M., Wolin, E., Wood, M. H., Yegneswaran, A., Zana, L., Zhang, J., Zhao, B., and Zhao, Z.

Subjects
Nuclear and High Energy Physics, D ELASTIC-SCATTERING, COHERENT PION-PHOTOPRODUCTION, D ELASTIC-SCATTERING, DIBARYON RESONANCES, NEAR-THRESHOLD, MESIC NUCLEUS, BOUND-STATES, DEUTERON, MESON, SIGNATURE, REGION, DIBARYON RESONANCES, Nuclear Theory, MESIC NUCLEUS, COHERENT PION-PHOTOPRODUCTION, Resonance (particle physics), BOUND-STATES, REGION, Nuclear physics, Pion, Intermediate state, NEAR-THRESHOLD, Nuclear Experiment, Physics, Range (particle radiation), Eta meson, SIGNATURE, DEUTERON, Amplitude, High Energy Physics::Experiment, MESON, Nucleon, Excitation
Abstract

High-quality cross sections for the reaction gamma+d->pi^0+d have been measured using the CLAS at Jefferson Lab over a wide energy range near and above the eta-meson photoproduction threshold. At backward c.m. angles for the outgoing pions, we observe a resonance-like structure near E_gamma=700 MeV. Our model analysis shows that it can be explained by eta excitation in the intermediate state. The effect is the result of the contribution of the N(1535)S_11 resonance to the amplitudes of the subprocesses occurring between the two nucleons and of a two-step process in which the excitation of an intermediate eta meson dominates., Comment: slightly modified title, additional paragraph and a table (Table 2) added on p. 5; to be submitted to EPJA, 6 pages, 3 figures

Published
2010

34. Measurement of direct f0(980) photoproduction on the proton

Author

Battaglieri, M., De Vita, R., Szczepaniak, A. P., Adhikari, K. P., Aghasyan, M., Amaryan, M. J., Ambrozewicz, P., Anghinolfi, M., Asryan, G., Avakian, H., Bagdasaryan, H., Baillie, N., Ball, J. P., Baltzell, N. A., Batourine, V., Bedlinskiy, I., Bellis, M., Benmouna, N., Berman, B. L., Bibrzycki, L., Biselli, A. S., Bookwalter, C., Bouchigny, S., Boiarinov, S., Bradford, R., Branford, D., Briscoe, W. J., Brooks, W. K., Bltmann, S., Burkert, V. D., Calarco, J. R., Careccia, S. L., Carman, D. S., Casey, L., Chen, S., Cheng, L., Clinton, E., Cole, P. L., Collins, P., Crabb, D., Crannell, H., Crede, V., Cummings, J. P., Dale, D., Daniel, A., Dashyan, N., De Masi, R., De Sanctis, E., Degtyarenko, P. V., Deur, A., Dhamija, S., Dharmawardane, K. V., Dickson, R., Djalali, C., Dodge, G. E., Donnelly, J., Doughty, D., Dugger, M., Dzyubak, O. P., Egiyan, H., Egiyan, K. S., El Fassi, L., Elouadrhiri, L., Eugenio, P., Fedotov, G., Fersch, R., Forest, T. A., Fradi, A., Gabrielyan, M. Y., Gan, L., GarOon, M., Gasparian, A., Gavalian, G., Gevorgyan, N., Gilfoyle, G. P., Giovanetti, K. L., Girod, F. X., Glamazdin, O., Goett, J., Goetz, J. T., Gohn, W., Golovatch, E., Gordon, C. I. O., Gothe, R. W., Graham, L., Griffioen, K. A., Guidal, M., Guler, N., Guo, L., Gyurjyan, V., Hadjidakis, C., Hafidi, K., Hakobyan, H., Hakobyan, R. S., Hanretty, C., Hardie, J., Hassall, N., Heddle, D., Hersman, F. W., Hicks, K., Hleiqawi, I., Holtrop, M., Hyde, C. E., Ilieva, Y., Ireland, D. G., Ishkhanov, B. S., Isupov, E. L., Ito, M. M., Jenkins, D., Jo, H. S., Johnstone, J. R., Joo, K., Juengst, H. G., Kageya, T., Kalantarians, N., Keller, D., Kellie, J. D., Khandaker, M., Khetarpal, P., Kim, W., Klein, A., Klein, F. J., Klimenko, A. V., Konczykowski, P., Kossov, M., Krahn, Z., Kramer, L. H., Kubarovsky, V., Kuhn, J., Kuhn, S. E., Kuleshov, S. V., Kuznetsov, V., Lachniet, J., Laget, J. M., Langheinrich, J., Lawrence, D., Lee, T., Lesniak, L., Li, Ji, Livingston, K., Lowry, M., Lu, H. Y., MacCormick, M., Malace, S., Markov, N., Mattione, P., McCracken, M. E., McKinnon, B., Mecking, B. A., Melone, J. J., Mestayer, M. D., Meyer, C. A., Mibe, T., Mikhailov, K., Mineeva, T., Minehart, R., Mirazita, M., Miskimen, R., Mochalov, V., Mokeev, V., Moreno, B., Moriya, K., Morrow, S. A., Moteabbed, M., Munevar, E., Mutchler, G. S., Nadel-Turonski, P., Nakagawa, I., Nasseripour, R., Niccolai, S., Niculescu, G., Niculescu, I., Niczyporuk, B. B., Niroula, M. R., Niyazov, R. A., Nozar, M., Osipenko, M., Ostrovidov, A. I., Park, K., Park, S., Pasyuk, E., Paris, M., Paterson, C., Pereira, S. Anefalos, Pierce, J., Pivnyuk, N., Pocanic, D., Pogorelko, O., Pozdniakov, S., Price, J. W., Prok, Y., Protopopescu, D., Raue, B. A., Riccardi, G., Ricco, G., Ripani, M., Ritchie, B. G., Rosner, G., Rossi, P., Sabati, F., Saini, M. S., Salamanca, J., Salgado, C., Sandorfi, A., Santoro, J. P., Sapunenko, V., Schott, D., Schumacher, R. A., Serov, V. S., Sharabian, Y. G., Sharov, D., Shvedunov, N. V., Smith, E. S., Smith, L. C., Sober, D. I., Sokhan, D., Starostin, A., Stavinsky, A., Stepanyan, S., Stepanyan, S. S., Stokes, B. E., Stoler, P., Stopani, K. A., Strakovsky, I. I., Strauch, S., Taiuti, M., Tedeschi, D. J., Teymurazyan, A., Tkabladze, A., Tkachenko, S., Todor, L., Tur, C., Ungaro, M., Vineyard, M. F., Vlassov, A. V., Watts, D. P., Wei, X., Weinstein, L. B., Weygand, D. P., Williams, M., Wolin, E., Wood, M. H., Yegneswaran, A., Yurov, M., Zana, L., Zhang, J., Zhao, B., and Zhao, Z. W.

Subjects
Physics and Astronomy(all)
Abstract

We report on the results of the first measurement of exclusive f_{0}(980) meson photoproduction on protons for E_{gamma}=3.0-3.8 GeV and -t=0.4-1.0 GeV2. Data were collected with the CLAS detector at the Thomas Jefferson National Accelerator Facility. The resonance was detected via its decay in the pi;{+}pi;{-} channel by performing a partial wave analysis of the reaction gammap--ppi;{+}pi;{-}. Clear evidence of the f_{0}(980) meson was found in the interference between P and S waves at M_{pi;{+}pi;{-}} approximately 1 GeV. The S-wave differential cross section integrated in the mass range of the f_{0}(980) was found to be a factor of about 50 smaller than the cross section for the rho meson. This is the first time the f_{0}(980) meson has been measured in a photoproduction experiment.

Published
2008
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35. Electroexcitation of the Roper resonance for 1.7 Q(2) en pi(+)

Author

Aznauryan, I. G., Burkert, V. D., Kim, W., Park, K., Adams, G., Amaryan, M. J., Ambrozewicz, P., Anghinolfi, M., Asryan, G., Avakian, H., Bagdasaryan, H., Baillie, N., Ball, J. P., Baltzell, N. A., Barrow, S., Batourine, V., Battaglieri, M., Bedlinskiy, I., Bektasoglu, M., Bellis, M., Benmouna, N., Berman, B. L., Biselli, A. S., Blaszczyk, L., Bonner, B. E., Bookwalter, C., Bouchigny, S., Boiarinov, S., Bradford, R., Branford, D., Briscoe, W. J., Brooks, W. K., Bueltmann, S., Butuceanu, C., Calarco, J. R., Careccia, S. L., Carman, D. S., Casey, L., Cazes, A., Chen, S., Cheng, L., Cole, P. L., Collins, P., Coltharp, P., Cords, D., Corvisiero, P., Crabb, D., Crede, V., Cummings, J. P., Dale, D., Dashyan, N., Masi, R. De, Vita, R. De, Sanctis, E. De, Degtyarenko, P. V., Denizli, H., Dennis, L., Deur, A., Dhamija, S., Dharmawardane, K. V., Dhuga, K. S., Dickson, R., Djalali, C., Dodge, G. E., Donnelly, J., Doughty, D., Dugger, M., Dytman, S., Dzyubak, O. P., Egiyan, H., Egiyan, K. S., Fassi, L. El 05, Elouadrhiri, L., Eugenio, P., Fatemi, R., Fedotov, G., Feldman, G., Feuerbach, R. J., Forest, T. A., Fradi, A., Funsten, H., Gabrielyan, M. Y., Garcon, M., Gavalian, G., Gevorgyan, N., Gilfoyle, G. P., Giovanetti, K. L., Girod, F. X., Goetz, J. T., Gohn, W., Golovatch, E., Gonenc, A., Gordon, C. I. O., Gothe, R. W., Graham, L., Griffioen, K. A., Guidal, M., Guillo, M., Guler, N., Guo, L., Gyurjyan, V., Hadjidakis, C., Hafidi, K., Hafnaoui, K., Hakobyan, H., Hakobyan, R. S., Hanretty, C., Hardie, J., Hassall, N., Heddle, D., Hersman, F. W., Hicks, K., Hleiqawi, I., Holtrop, M., Hyde, C. E., Ilieva, Y., Ireland, D. G., Ishkhanov, B. S., Isupov, E. L., Ito, M. M., Jenkins, D., Jo, H. S., Johnstone, J. R., Joo, K., Juengst, H. G., Kalantarians, N., Keller, D., Kellie, J. D., Khandaker, M., Kim, K. Y., Klein, A., Klein, F. J., Klimenko, A. V., Kossov, M., Krahn, Z., Kramer, L. H., Kubarovsky, V., Kuhn, J., Kuhn, S. E., Kuleshov, S. V., Kuznetsov, V., Lachniet, J., Laget, J. M., Langheinrich, J., Lawrence, D., Lee, T., Li, Ji, Lima, A. C. S., Livingston, K., Lu, H. Y., Lukashin, K., MacCormick, M., Markov, N., Mattione, P., McAleer, S., McKinnon, B., McNabb, J. W. C., Mecking, B. A., Mehrabyan, S., Melone, J. J., Mestayer, M. D., Meyer, C. A., Mibe, T., Mikhailov, K., Minehart, R., Mirazita, M., Miskimen, R., Mokeev, V., Morand, L., Moreno, B., Moriya, K., Morrow, S. A., Moteabbed, M., Mueller, J., Munevar, E., Mutchler, G. S., Nadel-Turonski, P., Nasseripour, R., Niccolai, S., Niculescu, G., Niculescu, I., Niczyporuk, B. B., Niroula, M. R., Niyazov, R. A., Nozar, M., O'Rielly, G. V., Osipenko, M., Ostrovidov, A. I., Park, S., Pasyuk, E., Paterson, C., Pereira, S. Anefalos, Philips, S. A., Pierce, J., Pivnyuk, N., Pocanic, D., Pogorelko, O., Polli, E., Popa, I., Pozdniakov, S., Preedom, B. M., Price, J. W., Prok, Y., Protopopescu, D., Qin, L. M., Raue, B. A., Riccardi, G., Ricco, G., Ripani, M., Ritchie, B. G., Rosner, G., Rossi, P., Rowntree, D., Rubin, P. D., Sabatie, F., Saini, M. S., Salamanca, J., Salgado, C., Santoro, J. P., Sapunenko, V., Schott, D., Schumacher, R. A., Serov, V. S., Sharabian, Y. G., Sharov, D., Shaw, J., Shvedunov, N. V., Skabelin, A. V., Smith, E. S., Smith, L. C., Sober, D. I., Sokhan, D., Stavinsky, A., Stepanyan, S. S., Stepanyan, S., Stokes, B. E., Stoler, P., Strakovsky, I. I., Strauch, S., Suleiman, R., Taiuti, M., Takeuchi, T., Tedeschi, D. J., Tkabladze, A., Tkachenko, S., Todor, L., Tur, C., Ungaro, M., Vineyard, M. F., Vlassov, A. V., Watts, D. P., Weinstein, L. B., Weygand, D. P., Williams, M., Wolin, E., Wood, M. H., Yegneswaran, A., Yun, J., Yurov, M., Zana, L., Zhang, B., Zhang, J., Zhao, B., and Zhao, Z. W.

Subjects
Nuclear and High Energy Physics
Abstract

The helicity amplitudes of the electroexcitation of the Roper resonance are extracted for 1.7 < Q(2)< 4.5 GeV2 from recent high precision JLab-CLAS cross section and longitudinally polarized beam asymmetry data for pi(+) electroproduction on protons at W=1.15-1.69 GeV. The analysis is made using two approaches, dispersion relations and a unitary isobar model, which give consistent Q(2) behavior of the helicity amplitudes for the gamma(*)p -> N(1440)P-11 transition. It is found that the transverse helicity amplitude A(1/2), which is large and negative at Q(2)=0, becomes large and positive at Q(2)similar or equal to 2 GeV2, and then drops slowly with Q(2). The longitudinal helicity amplitude S-1/2, which was previously found from CLAS ep -> ep pi(0),en pi(+) data to be large and positive at Q(2)=0.4,0.65 GeV2, drops with Q(2). Available model predictions for gamma(*)p -> N(1440)P-11 allow us to conclude that these results provide strong evidence in favor of N(1440)P-11 as a first radial excitation of the 3q ground state. The results of the present paper also confirm the conclusion of our previous analysis for Q(2)< 1 GeV2 that the presentation of N(1440)P-11 as a q(3)G hybrid state is ruled out.

Published
2008
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36. Electroexcitation of the roper resonance for 1.7 < q(2)< 4.5 gev(2) in ep -> en pi(+)

Author

Aznauryan, I. G., Burkert, V. D., Kim, W., Park, K., Adams, G., Amaryan, M. J., Ambrozewicz, P., Anghinolfi, M., Asryan, G., Avakian, H., Bagdasaryan, H., Baillie, N., Ball, J. P., Baltzell, N. A., Barrow, S., Batourine, V., Battaglieri, M., Bedlinskiy, I., Bektasoglu, M., Bellis, M., Benmouna, N., Berman, B. L., Biselli, A. S., Blaszczyk, L., Bonner, B. E., Bookwalter, C., Bouchigny, S., Boiarinov, S., Bradford, R., Branford, D., Briscoe, W. J., Brooks, W. K., Bueltmann, S., Butuceanu, C., Calarco, J. R., Careccia, S. L., Carman, D. S., Casey, L., Cazes, A., Chen, S., Cheng, L., Cole, P. L., Collins, P., Coltharp, P., Cords, D., Corvisiero, P., Crabb, D., Crede, V., Cummings, J. P., Dale, D., Dashyan, N., Masi, R. De, Vita, R. De, Sanctis, E. De, Degtyarenko, P. V., Denizli, H., Dennis, L., Deur, A., Dhamija, S., Dharmawardane, K. V., Dhuga, K. S., Dickson, R., Djalali, C., Dodge, G. E., Donnelly, J., Doughty, D., Dugger, M., Dytman, S., Dzyubak, O. P., Egiyan, H., Egiyan, K. S., Fassi, L. El 05, Elouadrhiri, L., Eugenio, P., Fatemi, R., Fedotov, G., Feldman, G., Feuerbach, R. J., Forest, T. A., Fradi, A., Funsten, H., Gabrielyan, M. Y., Garcon, M., Gavalian, G., Gevorgyan, N., Gilfoyle, G. P., Giovanetti, K. L., Girod, F. X., Goetz, J. T., Gohn, W., Golovatch, E., Gonenc, A., Gordon, C. I. O., Gothe, R. W., Graham, L., Griffioen, K. A., Guidal, M., Guillo, M., Guler, N., Guo, L., Gyurjyan, V., Hadjidakis, C., Hafidi, K., Hafnaoui, K., Hakobyan, H., Hakobyan, R. S., Hanretty, C., Hardie, J., Hassall, N., Heddle, D., Hersman, F. W., Hicks, K., Hleiqawi, I., Holtrop, M., Hyde, C. E., Ilieva, Y., Ireland, D. G., Ishkhanov, B. S., Isupov, E. L., Ito, M. M., Jenkins, D., Jo, H. S., Johnstone, J. R., Joo, K., Juengst, H. G., Kalantarians, N., Keller, D., Kellie, J. D., Khandaker, M., Kim, K. Y., Klein, A., Klein, F. J., Klimenko, A. V., Kossov, M., Krahn, Z., Kramer, L. H., Kubarovsky, V., Kuhn, J., Kuhn, S. E., Kuleshov, S. V., Kuznetsov, V., Lachniet, J., Laget, J. M., Langheinrich, J., Lawrence, D., Lee, T., Li, Ji, Lima, A. C. S., Livingston, K., Lu, H. Y., Lukashin, K., MacCormick, M., Markov, N., Mattione, P., McAleer, S., McKinnon, B., McNabb, J. W. C., Mecking, B. A., Mehrabyan, S., Melone, J. J., Mestayer, M. D., Meyer, C. A., Mibe, T., Mikhailov, K., Minehart, R., Mirazita, M., Miskimen, R., Mokeev, V., Morand, L., Moreno, B., Moriya, K., Morrow, S. A., Moteabbed, M., Mueller, J., Munevar, E., Mutchler, G. S., Nadel-Turonski, P., Nasseripour, R., Niccolai, S., Niculescu, G., Niculescu, I., Niczyporuk, B. B., Niroula, M. R., Niyazov, R. A., Nozar, M., O'Rielly, G. V., Osipenko, M., Ostrovidov, A. I., Park, S., Pasyuk, E., Paterson, C., Pereira, S. Anefalos, Philips, S. A., Pierce, J., Pivnyuk, N., Pocanic, D., Pogorelko, O., Polli, E., Popa, I., Pozdniakov, S., Preedom, B. M., Price, J. W., Prok, Y., Protopopescu, D., Qin, L. M., Raue, B. A., Riccardi, G., Ricco, G., Ripani, M., Ritchie, B. G., Rosner, G., Rossi, P., Rowntree, D., Rubin, P. D., Sabatie, F., Saini, M. S., Salamanca, J., Salgado, C., Santoro, J. P., Sapunenko, V., Schott, D., Schumacher, R. A., Serov, V. S., Sharabian, Y. G., Sharov, D., Shaw, J., Shvedunov, N. V., Skabelin, A. V., Smith, E. S., Smith, L. C., Sober, D. I., Sokhan, D., Stavinsky, A., Stepanyan, S. S., Stepanyan, S., Stokes, B. E., Stoler, P., Strakovsky, I. I., Strauch, S., Suleiman, R., Taiuti, M., Takeuchi, T., Tedeschi, D. J., Tkabladze, A., Tkachenko, S., Todor, L., Tur, C., Ungaro, M., Vineyard, M. F., Vlassov, A. V., Watts, D. P., Weinstein, L. B., Weygand, D. P., Williams, M., Wolin, E., Wood, M. H., Yegneswaran, A., Yun, J., Yurov, M., Zana, L., Zhang, B., Zhang, J., Zhao, B., and Zhao, Z. W.

Published
2008

37. Q*2 DEPENDENCE OF THE S(11)(1535) PHOTOCOUPLING AND EVIDENCE FOR A P-WAVE RESONANCE IN ETA ELECTROPRODUCTION

Author

Denizli, H., Mueller, J., Dytman, S., Leber, M. L., Levine, R. D., Miles, J., Kim, K. Y., Adams, G., Amaryan, M. J., Ambrozewicz, P., Anghinolfi, M., Asavapibhop, B., Asryan, G., Avakian, H., Bagdasaryan, H., Baillie, N., Ball, J. P., Baltzell, N. A., Barrow, S., Batourine, V., Battaglieri, M., Beard, K., Bedlinskiy, I., Bektasoglu, M., Bellis, M., Benmouna, N., Bianchi, N., Biselli, A. S., Bonner, B. E., Bouchigny, S., Boiarinov, S., Bradford, R., Branford, D., Briscoe, W. J., Brooks, W. K., Bültmann, S., Burkert, V. D., Butuceanu, C., Calarco, J. R., Careccia, S. L., Carman, D. S., Cetina, C., Chen, S., Cole, P. L., Coleman, A., Collins, P., Coltharp, P., Cords, D., Corvisiero, Pietro, Crabb, D., Crede, V., Cummings, J. P., Dashyan, N., De Vita, R., De Sanctis, E., Degtyarenko, P. V., Dennis, L., Deur, A., Dhuga, K. S., Dickson, R., Djalali, C., Dodge, G. E., Donnelly, J., Doughty, D., Dragovitsch, P., Dugger, M., Dzyubak, O. P., Egiyan, H., Egiyan, K. S., El Fassi, L., Elouadrhiri, L., Empl, A., Eugenio, P., Farhi, L., Fatemi, R., Fedotov, G., Feldman, G., Feuerbach, R. J., Forest, T. A., Frolov, V., Funsten, H., Gaff, S. J., Garçon, M., Gavalian, G., Gilfoyle, G. P., Giovanetti, K. L., Girard, P., Girod, F. X., Goetz, J. T., Gonenc, A., Gothe, R. W., Griffioen, K. A., Guidal, M., Guillo, M., Guler, N., Guo, L., Gyurjyan, V., Hafidi, K., Hakobyan, H., Hakobyan, R. S., Hardie, J., Heddle, D., Hersman, F. W., Hicks, K., Hleiqawi, I., Holtrop, M., Hu, J., Hyde Wright, C. E., Ilieva, Y., Ireland, D. G., Ishkhanov, B. S., Isupov, E. L., Ito, M. M., Jenkins, D., H. S., Jo, Joo, K., Juengst, H. G., Kalantarians, N., Kelley, J. H., Kellie, J. D., Khandaker, M., Kim, K., Kim, W., Klein, A., Klein, F. J., Klusman, M., Kossov, M., Kramer, L. H., Kubarovsky, V., Kuhn, J., Kuhn, S. E., Kuleshov, S. V., Lachniet, J., Laget, J. M., Langheinrich, J., Lawrence, D., Livingston, K., H. Y., Lu, Lukashin, K., Maccormick, M., Manak, J. J., Markov, N., Mcaleer, S., Mckinnon, B., Mcnabb, J. W. C., Mecking, B. A., Mestayer, M. D., Meyer, C. A., Mibe, T., Mikhailov, K., Minehart, R., Mirazita, M., Miskimen, R., Mokeev, V., Moriya, K., Morrow, S. A., Moteabbed, M., Muccifora, V., Mutchler, G. S., Nadel Turonski, P., Napolitano, J., Nasseripour, R., Nelson, S. O., Niccolai, S., Niculescu, G., Niculescu, I., Niczyporuk, B. B., Niroula, M. R., Niyazov, R. A., Nozar, M., O'Rielly, G. V., Osipenko, M., Ostrovidov, A. I., Park, K., Pasyuk, E., Paterson, C., Peterson, G., Philips, S. A., Pierce, J., Pivnyuk, N., Pocanic, D., Pogorelko, O., Polli, E., Pozdniakov, S., Preedom, B. M., Price, J. W., Prok, Y., Protopopescu, D., Qin, L. M., Raue, B. A., Riccardi, G., Ricco, Giovanni, Ripani, M., Ritchie, B. G., Ronchetti, F., Rosner, G., Rossi, P., Rowntree, D., Rubin, P. D., Sabatié, F., Sabourov, K., Salamanca, J., Salgado, C., Santoro, J. P., Sapunenko, V., Schumacher, R. A., Serov, V. S., Shafi, A., Sharabian, Y. G., Shaw, J., Shvedunov, N. V., Simionatto, S., Skabelin, A. V., Smith, E. S., Smith, L. C., Sober, D. I., Sokhan, D., Spraker, M., Stavinsky, A., Stepanyan, S. S., Stepanyan, S., Stokes, B. E., Stoler, P., Strakovsky, I. I., Strauch, S., Taiuti, MAURO GINO, Taylor, S., Tedeschi, D. J., Thoma, U., Thompson, R., Tkabladze, A., Tkachenko, S., Tur, C., Ungaro, M., Vineyard, M. F., Vlassov, A. V., Wang, K., Watts, D. P., Weinstein, L. B., Weller, H., Weygand, D. P., Williams, M., Wolin, E., Wood, M. H., Yegneswaran, A., Yun, J., Zana, L., Zhang, J., Zhao, B., and Zhao, Z. W.

Subjects
BARYON RESONANCE, FORM-FACTORS, SIGMA-T, S11 1535 RESONANCE, MESON PHOTOPRODUCTION, ISOBAR MODEL, QUARK-MODEL, PROTON, S11(1535), S11 1535 RESONANCE, QUARK-MODEL, MESON PHOTOPRODUCTION, BARYON RESONANCE, ISOBAR MODEL, FORM-FACTORS, SIGMA-T, S11(1535), REGION, PROTON, REGION
Published
2007

38. Measurement of W polarisation at LEP

Author

Achard, P., Adriani, O., Aguilar-Benitez, M., Alcaraz, J., Alemanni, G., Allaby, J., Aloisio, A., Alviggi, M. G., Anderhub, H., Andreev', V., Anselmo, F., Arefiev, A., Azemoon, T., Aziz, T., Bagnaia, P., Bajo, A., Baksay, G., Baksay, L., Baldew, S. V., Banerjee, S., Barczyk, A., Barillere, R., Bartalini, P., Basile, M., Batalov, N., Battiston, R., Bay, A., Becattini, F., Becker, U., Behner, F., Bellucci, L., Berbeco, R., Berdugo, J., Berges, P., Bertucci, B., Betev, B. L., Biasini, M., Biglietti, M., Biland, A., Blaising, J. J., Blyth, S. C., Bobbink, G. J., Bohm, A., Boldizsar, L., Borgia, B., Bottai, S., Bourilkov, D., Bourquin, M., Braccini, S., Branson, J. G., Brochu, F., Burger, J. D., Burger, W. J., Cai, X. D., Capell, M., Romeo, G. C., Carlino, G., Cartacci, A., Casaus, J., Cavallari, F., Cavallo, N., Cecchi, C., Cerrada, M., Chamizo, M., Chang, Y. H., Chemarin, M., Chen, A., Chen, G., Chen, G. M., Chen, H. F., Chen, H. S., Chiefari, G., Cifarelli, L., Cindolo, F., Clare, I., Clare, R., Coignet, G., Colino, N., Costantini, S., de la Cruz, B., Cucciarelli, S., van Dalen, J. A., de Asmundis, R., Deglon, P., Debreczeni, J., Degre, A., Dehmelt, K., Deiters, K., della Volpe, D., Delmeire, E., Denes, P., DeNotaristefani, F., De Salvo, A., Diemoz, A., Dierckxsens, M., Dionisi, C., Dittmar, M., Doria, A., Dova, M. T., Duchesneau, D., Duda, M., Echenard, B., Eline, A., El Hage, A., El Mamouni, H., Engler, A., Eppling, F. J., Extermann, P., Falagan, M. A., Falciano, S., Favara, A., Fay, J., Fedin, O., Felcini, M., Ferguson, T., Fesefeldt, H., Fiandrini, E., Field, J. H., Filthaut, F., Fisher, P. H., Fisher, W., Fisk, I., Forconi, G., Freudenreich, K., Furetta, C., Galaktionov, Y., Ganguli, S. N., Garcia-Abia, P., Gataullin, M., Gentile, S., Giagu, S., Gong, Z. F., Grenier, G., Grimm, O., Gruenewald, M. W., Guida, M., van Gulik, R., Gupta, V. K., Gurtu, A., Gutay, L. J., Haas, D., Hakobyan, R. S., Hatzifotiadou, D., Hebbeker, T., Herve, A., Hirschfelder, J., Hofer, H., Hohlmann, M., Holzner, G., Hou, S. R., Hu, Y., Jin, B. N., Jones, L. W., de Jong, P., Josa-Mutuberria, I., Kafer, D., Kaur, M., Kienzle-Focacci, M. N., Kim, J. K., Kirkby, J., Kittel, W., Klimentov, A., Konig, A. C., Kopal, M., Koutsenko, V., Kraber, M., Kraemer, R. W., Kruger, A., Kunin, A., de Guevara, P. L., Laktineh, I., Landi, G., Lebeau, M., Lebedev, A., Lebrun, P., Lecomte, P., Lecoq, P., Le Coultre, P., Le Goff, J. M., Leiste, R., Levtchenko, M., Levtchenko, P., Li, C., Likhoded, S., Lin, C. H., Lin, W. T., Linde, F. L., Lista, L., Liu, Z. A., Lohmann, W., Longo, E., Lu, Y. S., Luci, C., Luminari, L., Lustermann, W., Ma, W. G., Malgeri, L., Malinin, A., Mana, C., Mangeol, D., Mans, J., Martin, J. P., Marzano, F., Mazumdar, K., McNeil, R. R., Mele, S., Merola, L., Meschini, M., Metzger, W. J., Mihul, A., Milcent, H., Mirabelli, G., Mnich, J., Mohanty, G. B., Muanza, G. S., Muijs, A. J. M., Musicar, B., Musy, M., Nagy, S., Natale, S., Napolitano, M., Nessi-Tedaldi, F., Newman, H., Nisati, A., Nowak, H., Ofierzynski, R., Organtini, G., Palomares, C., Paolucci, P., Paramatti, R., Passaleva, G., Patricelli, S., Paul, T., Pauluzzi, M., Paus, C., Pauss, F., Pedace, M., Pensotti, S., Perret-Gallix, D., Petersen, B., Piccolo, D., Pierella, F., Pioppi, M., Piroue, P. A., Pistolesi, E., Plyaskin, V., Pohl, M., Pojidaev, V., Pothier, J., Prokofiev, D. O., Prokofiev, D., Quartieri, J., Rahal-Callot, G., Rahaman, M. A., Raics, P., Raja, N., Ramelli, R., Rancoita, P. G., Ranieri, R., Raspereza, A., Razis, P., Ren, D., Rescigno, M., Reucroft, S., Riemann, S., Riles, K., Roe, B. P., Romero, L., Rosca, A., Rosier-Lees, S., Roth, S., Rosenbleck, C., Roux, B., Rubio, J. A., Ruggiero, G., Rykaczewski, H., Sakharov, A., Saremi, S., Sarkar, S., Salicio, J., Sanchez, E., Sanders, M. P., Schafer, C., Schegelsky, V., Schopper, H., Schotanus, D. J., Sciacca, C., Servoli, L., Shevchenko, S., Shivarov, N., Shoutko, V., Shumilov, E., Shvorob, A., Son, D., Souga, C., Spillantini, P., Steuer, M., Stickland, D. P., Stoyanov, B., Straessner, A., Sudhakar, K., Sultanov, G., Sun, L. Z., Sushkov, S., Suter, H., Swain, J. D., Szillasi, Z., Tang, X. W., Tarjan, P., Tauscher, L., Taylor, L., Tellili, B., Teyssier, D., Timmermans, C., Ting, S. C. C., Ting, S. M., Tonwar, S. C., Toth, J., Tully, C., Tung, K. L., Ulbricht, J., Valente, E., de Walle, R. T. V., Vasquez, R., Veszpremi, V., Vesztergombi, G., Vetlitsky, I., Vicinanza, D., Viertel, G., Villa, S., Vivargent, M., Vlachos, S., Vodopianov, I., Vogel, H., Vogt, H., Vorobiev, I., Vorobyov, A. A., Wadhwa, M., Wang, X. L., Wang, Z. M., Weber, M., Wienemann, P., Wilkens, H., Wynhoff, S., Xia, L., Xu, Z. Z., Yamamoto, J., Yang, B. Z., Yang, C. G., Yang, H. J., Yang, M., Yeh, S. C., Zalite, A., Zalite, Y., Zhang, Z. P., Zhao, J., Zhu, G. Y., and Zhu, R. Y.

Subjects
High Energy Physics::Phenomenology, High Energy Physics::Experiment, (un)stable w+w production, monte-carlo program, l3 experiment, pair production, energies, detector, exponentiation, generator
Abstract

The three different helicity states of W bosons produced in the reaction e(+)e(-) --> W+W- --> lvqq' at LEP are studied using leptonic and hadronic W decays. Data at centre-of-mass energies roots = 183-209 GeV are used to measure the polarisation of W bosons, and its dependence on the W boson production angle. The fraction of longitudinally polarised W bosons is measured to be 0.218 +/- 0.027 +/- 0.016 where the first uncertainty is statistical and the second systematic, in agreement with the Standard Model expectation. (C) 2003 Published by Elsevier Science B.V.

Published
2003

39. Search for Neutral Higgs Bosons of the Minimal Supersymmetric Standard Model in $e^+ e^-$ Interactions at $\sqrt{s}$ up to 209 GeV

Author

Achard, P., Adriani, O., Aguilar-Benitez, M., Alcaraz, J., Alemanni, G., Allaby, J., Aloisio, A., Alviggi, M G., Anderhub, H., Andreev, V P., Anselmo, F., Arefev, A., Azemoon, T., Aziz, T., Bagnaia, P., Bajo, A., Baksay, G., Baksay, L., Baldew, S V., Banerjee, S., Banerjee, Sw., Barillere, R., Bartalini, P., Basile, M., Batalova, N., Battiston, R., Bay, A., Becattini, F., Becker, U., Behner, F., Bellucci, L., Berbeco, R., Berdugo, J., Berges, P., Bertucci, B., Betev, B L., Biasini, M., Biglietti, M., Biland, A., Blaising, J J., Blyth, S C., Bobbink, G J., Bohm, A., Borgia, B., Bottai, S., Bourilkov, D., Bourquin, M., Braccini, S., Branson, J G., Brochu, F., Burger, J D., Burger, W J., Cai, X D., Capell, M., Cara Romeo, G., Carlino, G., Cartacci, A., Casaus, J., Cavallari, F., Cavallo, N., Cecchi, C., Cerrada, M., Chamizo-Llatas, M., Chang, Y H., Chemarin, M., Chen, A., Chen, G., Chen, G M., Chen, H F., Chen, H S., Chiefari, G., Cifarelli, L., Cindolo, F., Clare, I., Clare, R., Coignet, G., Colino, N., Costantini, S., De La Cruz, B., Cucciarelli, S., Van Dalen, J A., De Asmundis, R., Deglon, P L., Debreczeni, J., Degre, A., Dehmelt, K., Deiters, K., Della Volpe, D., Delmeire, E., Denes, P., De Notaristefani, F., De Salvo, A., Diemoz, M., Dierckxsens, M., Dionisi, C., Dittmar, M., Doria, A., Dova, M T., Duchesneau, D., Echenard, B., Eline, A., El Mamouni, H., Engler, A., Eppling, F J., Ewers, A., Extermann, P., Falagan, M A., Falciano, S., Favara, A., Fay, J., Fedin, O., Felcini, M., Ferguson, T., Fesefeldt, H., Fiandrini, E., Field, J H., Filthaut, F., Fisher, P H., Fisher, W., Fisk, I., Forconi, G., Freudenreich, K., Furetta, C., Galaktionov, Yu., Ganguli, S N., Garcia-Abia, P., Gataullin, M., Gentile, S., Giagu, S., Gong, Z F., Grenier, G., Grimm, O., Grunewald, M W., Guida, M., Van Gulik, R., Gupta, V K., Gurtu, A., Gutay, L J., Haas, D., Hakobyan, R S., Hatzifotiadou, D., Hebbeker, T., Herve, A., Hirschfelder, J., Hofer, H., Hohlmann, M., Holzner, G., Hou, S R., Hu, Y., Jin, B N., Jones, L W., Jong, P., Josa-Mutuberria, I., Kafer, D., Kaur, M., Kienzle-Focacci, M N., Kim, J K., Kirkby, J., Kittel, W., Klimentov, A., Konig, A C., Kopal, M., Koutsenko, V., Kraber, M., Kramer, R W., Krenz, W., Kruger, A., Kunin, A., Ladron De Guevara, P., Laktineh, I., Landi, G., Lebeau, M., Lebedev, A., Lebrun, P., Lecomte, P., Lecoq, P., Le Coultre, P., Le Goff, J M., Leiste, R., Levtchenko, M., Levchenko, P., Li, C., Likhoded, S., Lin, C H., Lin, W T., Linde, F L., Lista, L., Liu, Z A., Lohmann, W., Longo, E., Lu, Y S., Lubelsmeyer, K., Luci, C., Luminari, L., Lustermann, W., Ma, W G., Malgeri, L., Malinin, A., Mana, C., Mangeol, D., Mans, J., Martin, J.-P., Marzano, F., Mazumdar, K., McNeil, R R., Mele, S., Merola, L., Meschini, M., Metzger, W J., Mihul, A., Milcent, H., Mirabelli, G., Mnich, J., Mohanty, G B., Muanza, G.-S., Muijs, A J M., Musicar, B., Musy, M., Nagy, S., Natale, S., Napolitano, M., Nessi-Tedaldi, F., Newman, H., Niessen, T., Nisati, A., Nowak, H., Ofierzynski, R., Organtini, G., Pandoulas, D., Paolucci, P., Paramatti, R., Passaleva, G., Patricelli, S., Paul, T., Pauluzzi, M., Paus, C., Pauss, F., Pedace, M., Pensotti, S., Perret-Gallix, D., Petersen, B., Piccolo, D., Pierella, F., Pioppi, M., Piroue, P A., Pistolesi, E., Plyaskin, V., Pohl, M., Pozhidaev, V., Pothier, J., Prokofiev, D O., Prokofev, D., Quartieri, J., Rahal-Callot, G., Rahaman, M A., Raics, P., Raja, N., Ramelli, R., Rancoita, P G., Ranieri, R., Raspereza, A., Razis, P., Ren, D., Rescigno, M., Reucroft, S., Riemann, S., Riles, K., Roe, B P., Romero, L., Rosca, A., Rosier-Lees, S., Roth, S., Rosenbleck, C., Roux, B., Rubio, J A., Ruggiero, G., Rykaczewski, H., Sakharov, A., Saremi, S., Sarkar, S., Salicio, J., Sanchez, E., Sanders, M P., Schafer, C., Shchegelskii, V., Schmidt-Karst, S., Schmitz, D., Schopper, H., Schotanus, D J., Schwering, G., Sciacca, C., Servoli, L., Shevchenko, S., Shivarov, N., Shoutko, V., Shumilov, E., Shvorob, A., Siedenburg, T., Son, D., Souga, C., Spillantini, P., Steuer, M., Stickland, D P., Stoyanov, B., Strassner, A., Sudhakar, K., Sultanov, G G., Sun, L Z., Sushkov, S., Suter, H., Swain, J D., Szillasi, Z., Tang, X W., Tarjan, P., Tauscher, L., Tellili, B., Teyssier, D., Timmermans, C., Ting, S C C., Ting, S M., Tonwar, S C., Toth, J., Tully, C., Tung, K L., Ulbricht, J., Valente, E., Van, De, Walle, R T., Vasquez, R., Veszpremi, V., Vesztergombi, G., Vetlitskii, I., Vicinanza, D., Viertel, G., Villa, S., Vivargent, M., Vlachos, S., Vodopyanov, I., Vogel, H., Vogt, H., Vorobev, I., Vorobyov, A A., Wadhwa, M., Wallraff, W., Wang, X L., Wang, Z M., Weber, M., Wilkens, H., Wynhoff, S., Xia, L., Xu, Z Z., Yamamoto, J., Yang, B Z., Yang, C G., Yang, H J., Yang, M., Yeh, S C., Zalite, A., Zalite, Yu., Zhang, Z P., Zhao, J., Zhu, G Y., Zhu, R Y., Zhuang, H L., Zichichi, A., Zimmermann, B., Zoller, M., Laboratoire d'Annecy de Physique des Particules (LAPP), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS), Institut de Physique Nucléaire de Lyon (IPNL), Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), CMS, Institut de Physique des 2 Infinis de Lyon (IP2I Lyon), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS), and L3

Subjects
High Energy Physics::Phenomenology, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], High Energy Physics::Experiment
Abstract

A search for the lightest neutral CP-even and neutral CP-odd Higgs bosons of the Minimal Supersymmetric Standard Model is performed using 216.6 pb-1 of data collected with the L3 detector at LEP at centre-of-mass energies between 203 and 209 GeV. No indication of a signal is found. Including our results from lower centre-of-mass energies, lower limits on the Higgs boson masses are set as a function of tan(beta) for several scenarios. For tan(beta) greater than 0.7 they are mh 84.5 GeV and mA 86.3 GeV at 95% confidence level.

Published
2002

40. Inclusive $D^{\star\pm}$ Production in Two-Photon Collisions at LEP

Author

Achard, P., Adriani, O., Aguilar-Benitez, M., Alcaraz, J., Alemanni, G., Allaby, J., Aloisio, A., Alviggi, M G., Anderhub, H., Andreev, V P., Anselmo, F., Arefev, A., Azemoon, T., Aziz, T., Bagnaia, P., Bajo, A., Baksay, G., Baksay, L., Baldew, S V., Banerjee, S., Banerjee, Sw., Barczyk, A., Barillere, R., Bartalini, P., Basile, M., Batalova, N., Battiston, R., Bay, A., Becattini, F., Becker, U., Behner, F., Bellucci, L., Berbeco, R., Berdugo, J., Berges, P., Bertucci, B., Betev, B L., Biasini, M., Biglietti, M., Biland, A., Blaising, J J., Blyth, S C., Bobbink, G J., Boehm, A., Boldizsar, L., Borgia, B., Bottai, S., Bourilkov, D., Bourquin, M., Braccini, S., Branson, J G., Brochu, F., Burger, J D., Burger, W J., Cai, X D., Capell, M., Cara Romeo, G., Carlino, G., Cartacci, A., Casaus, J., Cavallari, F., Cavallo, N., Cecchi, C., Cerrada, M., Chamizo-Llatas, M., Chang, Y H., Chemarin, M., Chen, A., Chen, G., Chen, G M., Chen, H F., Chen, H S., Chiefari, G., Cifarelli, L., Cindolo, F., Clare, I., Clare, R., Coignet, G., Colino, N., Costantini, S., De La Cruz, B., Cucciarelli, S., Van Dalen, J A., De Asmundis, R., Deglon, P., Debreczeni, J., Degre, A., Deiters, K., Della Volpe, D., Delmeire, E., Denes, P., De Notaristefani, F., De Salvo, A., Diemoz, M., Dierckxsens, M., Dionisi, C., Dittmar, M., Doria, A., Dova, M T., Duchesneau, D., Echenard, B., Eline, A., El Mamouni, H., Engler, A., Eppling, F J., Ewers, A., Extermann, P., Falagan, M A., Falciano, S., Favara, A., Fay, J., Fedin, O., Felcini, M., Ferguson, T., Fesefeldt, H., Fiandrini, E., Field, J H., Filthaut, F., Fisher, P H., Fisher, W., Fisk, I., Forconi, G., Freudenreich, K., Furetta, C., Galaktionov, Yu., Ganguli, S N., Garcia-Abia, P., Gataullin, M., Gentile, S., Giagu, S., Gong, Z F., Grenier, G., Grimm, O., Gruenewald, M W., Guida, M., Van Gulik, R., Gupta, V K., Gurtu, A., Gutay, L J., Haas, D., Hakobyan, R S., Hatzifotiadou, D., Hebbeker, T., Herve, A., Hirschfelder, J., Hofer, H., Hohlmann, M., Holzner, G., Hou, S R., Hu, Y., Jin, B N., Jones, L W., De Jong, P., Josa-Mutuberria, I., Kafer, D., Kaur, M., Kienzle-Focacci, M N., Kim, J K., Kirkby, J., Kittel, W., Klimentov, A., Koenig, A C., Kopal, M., Koutsenko, V F., Kraber, M., Kraemer, R W., Krenz, W., Krueger, A., Kunin, A., Ladron De Guevara, P., Laktineh, I., Landi, G., Lebeau, M., Lebedev, A., Lebrun, P., Lecomte, P., Lecoq, P., Le Coultre, P., Le Goff, J M., Leiste, R., Levtchenko, M., Levchenko, P M., Li, C., Likhoded, S., Lin, C H., Lin, W T., Linde, F L., Lista, L., Liu, Z A., Lohmann, W., Longo, E., Lue, Y S., Luebelsmeyer, K., Luci, C., Luminari, L., Lustermann, W., Ma, W G., Malgeri, L., Malinin, A., Mana, C., Mangeol, D., Mans, J., Martin, J.-P., Marzano, F., Mazumdar, K., McNeil, R R., Mele, S., Merola, L., Meschini, M., Metzger, W J., Mihul, A., Milcent, H., Mirabelli, G., Mnich, J., Mohanty, G B., Muanza, G.-S., Muijs, A J M., Musicar, B., Musy, M., Nagy, S., Natale, S., Napolitano, M., Nessi-Tedaldi, F., Newman, H., Niessen, T., Nisati, A., Nowak, H., Ofierzynski, R., Organtini, G., Palomares, C., Pandoulas, D., Paolucci, P., Paramatti, R., Passaleva, G., Patricelli, S., Paul, T., Pauluzzi, M., Paus, C., Pauss, F., Pedace, M., Pensotti, S., Perret-Gallix, D., Petersen, B., Piccolo, D., Pierella, F., Pioppi, M., Piroue, P A., Pistolesi, E., Plyaskin, V., Pohl, M., Pozhidaev, V., Pothier, J., Prokofev, D O., Prokofev, D., Quartieri, J., Rahal-Callot, G., Rahaman, M A., Raics, P., Raja, N., Ramelli, R., Rancoita, P G., Ranieri, R., Raspereza, A V., Razis, P., Ren, D., Rescigno, M., Reucroft, S., Riemann, S., Riles, K., Roe, B P., Romero, L., Rosca, A., Rosier-Lees, S., Roth, S., Rosenbleck, C., Roux, B., Rubio, J A., Ruggiero, G., Rykaczewski, H., Sakharov, A., Saremi, S., Sarkar, S., Salicio, J., Sanchez, E., Sanders, M P., Schaefer, C., Shchegelskii, V., Schmidt-Kaerst, S., Schmitz, D., Schopper, H., Schotanus, D J., Schwering, G., Sciacca, C., Servoli, L., Shevchenko, S., Shivarov, N., Shoutko, V., Shumilov, E., Shvorob, A., Siedenburg, T., Son, D., Spillantini, P., Steuer, M., Stickland, D P., Stoyanov, B., Straessner, A., Sudhakar, K., Sultanov, G G., Sun, L Z., Sushkov, S., Suter, H., Swain, J D., Szillasi, Z., Tang, X W., Tarjan, P., Tauscher, L., Taylor, L., Tellili, B., Teyssier, D., Timmermans, C., Ting, S C C., Ting, S M., Tonwar, S C., Toth, J., Tully, C., Tung, K L., Ulbricht, J., Valente, E., Van, R T., De Walle, M., Veszpremi, V., Vesztergombi, G., Vetlitskii, I., Vicinanza, D., Viertel, G., Villa, S., Vivargent, M., Vlachos, S., Vodopyanov, I., Vogel, H., Vogt, H., Vorobev, I., Vorobyov, A A., Wadhwa, M., Wallraff, W., Wang, X L., Wang, Z M., Weber, M., Wienemann, P., Wilkens, H., Wynhoff, S., Xia, L., Xu, Z Z., Yamamoto, J., Yang, B Z., Yang, C G., Yang, H J., Yang, M., Yeh, S C., Zalite, A., Zalite, Yu., Zhang, Z P., Zhao, J., Zhu, G Y., Zhu, R Y., Zhuang, H L., Zichichi, A., Zilizi, G., Zimmermann, B., Zoeller, M., Laboratoire d'Annecy de Physique des Particules (LAPP), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS), Institut de Physique Nucléaire de Lyon (IPNL), Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), CMS, Institut de Physique des 2 Infinis de Lyon (IP2I Lyon), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS), and L3

Subjects
[PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], High Energy Physics::Experiment, Nuclear Experiment
Abstract

Inclusive D^{*+-} production in two-photon collisions is studied with the L3 detector at LEP, using 683 pb^{-1} of data collected at centre-of-mass energies from 183 to 208 GeV. Differential cross sections are determined as functions of the transverse momentum and pseudorapidity of the D^{*+-} mesons in the kinematic region 1 GeV P_T 12 GeV and |eta| 1.4. The cross sections sigma(e^+e^- ---> e^+e^-D^{*+-}X)$ in this kinematical region is measured and the sigma(e^+e^- ---> e^+e^- cc{bar}X) cross section is derived. The measurements are compared with next-to-leading order perturbative QCD calculations.

Published
2002

41. Transverse flow in heavy ion interactions at the CERN SPS

Author

Saturnini, P., Abreu, M C., Alessandro, B., Alexa, C., Arnaldi, R., Atayan, M., Baglin, C., Baldit, A., Bedjidian, M., Beole, S., Boldea, V., Bordalo, P., Bussiere, A., Capelli, Laurent, Casagrande, L., Castanier, C., Castor, J., Chambon, T., Chaurand, B., Chevrot, I., Cheynis, B., Chiavassa, E., Cicalo, C., Claudino, T., Comets, M-P., Constans, N., Constantinescu, S., De Falco, A., Dellacasa, G., De Marco, N., Devaux, A., Dita, S., Drapier, O., Ducroux, L., Espagnon, B., Fargeix, J., Force, P., Gallio, M., Gavrilov Yu, K., Gerschel, C., Giubellino, P., Golubeva, M-B., Gonin, M., Grigorian, A-A., Grossiord, J.-Y., Guber, F-F., Guichard, A., Gulkanyan, H., Hakobyan, R S., Haroutunian, R., Idzik, M., Jouan, D., Karavitcheva, T-L., Kluberg, L., Kurepin, A-B., Le Bornec, Y., Lourenco, C., Mac Cormick, M., Macciotta, P., Marzari-Chiesa, A., Masera, M., Masoni, A., Mehrabyan, S., Monteno, M., Musso, A., Petiau, P., Piccotti, A., Pizzi, J.-R., Prino, F., Puddu, G., Quintans, C., Ramello, L., Ramos, S., Rato-Mendes, P., Riccati, L., Romana, A., Ropotar, I., Scomparin, E., Serci, S., Shahoyan, R., Silva, S., Sitta, M., Soave, C., Sonderegger, P., Tarrago, X., Topilskaya, N-S., Usai, G-L., Vercellin, E., Villatte, L., Willis, N., Laboratoire de Physique Corpusculaire - Clermont-Ferrand (LPC), Université Blaise Pascal - Clermont-Ferrand 2 (UBP)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire d'Annecy de Physique des Particules (LAPP), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS), Institut de Physique Nucléaire de Lyon (IPNL), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire Leprince-Ringuet (LLR), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Institut de Physique Nucléaire d'Orsay (IPNO), 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), ALICE, Institut de Physique des 2 Infinis de Lyon (IP2I Lyon), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), NA50, Robert, Suzanne, Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), 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), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS), and Laboratoire d'Annecy de Physique des Particules (LAPP/Laboratoire d'Annecy-le-Vieux de Physique des Particules)

Subjects
[PHYS.HPHE] Physics [physics]/High Energy Physics - Phenomenology [hep-ph], [PHYS.HPHE]Physics [physics]/High Energy Physics - Phenomenology [hep-ph]
Abstract

NA50

Published
2000

42. Study of prompt dimuon and charm production with proton and heavy ion beams at the CERN SPS

Author

Baldit, A, Castor, J I, Devaux, A, Espagnon, B, Force, P, Manso, F, Saturnini, P, Borer, K, Hess, M, Chochula, P, Rosinsky, P, Zagiba, M, Cicalò, C, De Falco, A, Macciotta, M P, Masoni, A, Puddu, G, Serci, S, Siddi, E, Usai, G L, Casagrande, L, Gorini, B, Granata, V, Heijne, Erik H M, Lenkeit, B C, Lourenço, C, Palmieri, V G, Ropotar, I, Sonderegger, P, Barbosa, J S, Ramalhete, P, Seixas, J, Comets, M P, Jouan, D, Le Bornec, Y, MacCormick, M, Willis, N, Chaurand, B, Kluberg, L, Arnaldi, R, Cortese, P, De Marco, N, Musso, A, Scomparin, E, Cheynis, B, Ducroux, L, Gangler, E, Grossiord, J Y, Guichard, A, Danielyan, V, Grigorian, A A, Grigorian, S, Gulkanian, H R, Hakobyan, R S, Mehrabyan, S S, Shahoyan, R, and Vardanian, H

Subjects
Detectors and Experimental Techniques
Published
2000

43. Results on Charmonium States in Pb-Pb Interactions

Author

Baglin, C, Bussière, A, Capony, V, Baldit, A, Castor, J I, Chambon, T, Chevrot, I, Devaux, A, Espagnon, B, Fargeix, J, Force, P, Mourgues, S, Saturnini, P, Alexa, C, Boldea, V, Constantinescu, S, Dita, S, Cicalò, C, De Falco, A, Macciotta, P, Masoni, A, Puddu, G, Serci, S, Temnikov, P P, Usai, G L, Lourenço, C, Scomparin, E, Sonderegger, P, Abreu, M C, Bordalo, P, Casagrande, L, Cruz, J, Quintans, C, Ramos, S, Shahoyan, R, Silva, S, Vale, C J, Filippov, S N, Gavrilov, Yu K, Golubeva, M B, Guber, F F, Karavitcheva, T L, Kurepin, A B, Topilskaya, N S, Astruc, J, Comets, M P, Gerschel, C, Jouan, D, Le Bornec, Y, MacCormick, M, Tarrago, X, Willis, N, Chaurand, B, Fleuret, F, Gonin, M, Kluberg, L, Petiau, P, Romana, A, Racca, C, Alessandro, B, Arnaldi, R, Beolè, S, Chiavassa, E, De Marco, N, Dellacasa, G, Gallio, M, Giubellino, P, Idzik, M, Marzari-Chiesa, A, Masera, M, Musso, A, Piccotti, A, Prado da Silva, W L, Ramello, L, Rato-Mendes, P, Riccati, L, Sartori, S M, Soave, C, Vercellin, Ermanno, Bedjidian, Marc, Bellaiche, F G, Cheynis, B, Drapier, O, Grossiord, J Y, Guichard, A, Haroutunian, R, Ohlsson-Malek, F, Pizzi, J R, Ataian, M R, Grigorian, A A, Gulkanian, H R, Hakobyan, R S, and Mehrabyan, S S

Subjects
High Energy Physics::Phenomenology, Nuclear Theory, High Energy Physics::Experiment, Nuclear Experiment, Particle Physics - Experiment
Abstract

We present cross-sections for J/$\psi$, $\psi^{\prime}$ and Drell-Yan production in lead-lead interactions at 158 GeV/nucleon. The Pb-Pb data, when compared with previous results obtained with lighter target or projectiles, show a similar behaviour for Drell-Yan, but exhibit an anomalous J/$\psi$ suppression, which increases with centrality.

Published
1998

45. Addendum to proposal SPSLC-P-265: low mass dimuon physics in NA50 upgraded by adding a pixel vertex spectrometer

Author

Abreu, M C, Alexa, C, Arnaldi, R, Ataian, M R, Baglin, C, Baldisseri, Alberto, Baldit, A, Bedjidian, Marc, Bellaiche, F G, Beolè, S, Alessandro, B, Boldea, V, Bordalo, P, Borel, H, Bussière, A, Campbell, M, Cantatore, E, Casagrande, L, Castor, J I, Chambon, T, Chaurand, B, Chevrot, I, Chesi, Enrico Guido, Cheynis, B, Chiavassa, E, Cicalò, C, Comets, M P, Constantinescu, S, Cruz, J, Danielyan, V, De Falco, A, De Marco, N, Dellacasa, G, Devaux, A, Dita, S, Drapier, O, Ducroux, L, Espagnon, B, Fargeix, J, Filippov, S N, Force, P, Gallio, M, Gavrilov, Yu K, Gerschel, C, Giubellino, P, Golubeva, M B, Gonin, M, Gosset, J, Grigorian, A A, Grossiord, J Y, Guber, F F, Guichard, A, Gulkanian, H R, Hakobyan, R S, Haroutunian, R, Heijne, Erik H M, Idzik, M, Jouan, D, Karavitcheva, T L, Kluberg, L, Kurepin, A B, Le Bornec, Y, Lourenço, C, Macciotta, P, MacCormick, M, Marzari-Chiesa, A, Masera, M, Masoni, A, Mehrabyan, S S, Morsch, Andreas, Mourgues, S, Musso, A, Petiau, P, Piccotti, A, Pizzi, J R, Puddu, G, Quintans, C, Ramello, L, Ramos, S, Rato-Mendes, P, Riccati, L, Romana, A, Ropotar, I, Sartori, S M, Saturnini, P, Scomparin, E, Serci, S, Shahoyan, R, Silva, S, Sitta, M, Snoeys, W, Soave, C, Sonderegger, P, Staley, F, Tarrago, X, Temnikov, P P, Terrien, Y, Topilskaya, N S, Usai, G L, Vale, C J, Vardanian, H, Vercellin, Ermanno, and Willis, N

Subjects
Detectors and Experimental Techniques
Published
1997

50. Higher order Bose-Einstein correlations in $\pi^{+}p$ and $K^{+}p$ collisions at 250 GeV/c

Author

Agababian, N M, Ajinenko, I, Ataian, M R, Belous, K S, Charlet, M, Chliapnikov, P V, Czyzewski, J, De Wolf, E A, Dziunikowska, K, Endler, A M, Garutchava, Z C, Gulkanian, H R, Hakobyan, R S, Karamian, J K, Kisielewska, D, Kittel, E W, Mehrabyan, S S, Metreveli, Z V, Olkiewicz, K, Rizatdinova, F K, Shabalina, E K, Smirnova, L N, Tabidze, M D, Tikhonova, L A, Tkabladze, A V, Tomaradze, A G, Verbeure, F, and Zotkin, S A

Subjects
Particle Physics - Experiment
Published
1995

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