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1. Production of deuterium, tritium, and $^3$He in central Pb+Pb collisions at 20A, 30A, 40A, 80A, and 158A GeV at the CERN SPS

Author

NA49 Collaboration, Anticic, T., Baatar, B., Bartke, J., Beck, H., Betev, L., Białkowska, H., Blume, C., Boimska, B., Book, J., Botje, M., Bunčić, P., Christakoglou, P., Chung, P., Chvala, O., Cramer, J. G., Eckardt, V., Fodor, Z., Foka, P., Friese, V., Gaździcki, M., Grebieszkow, K., Höhne, C., Kadija, K., Karev, A., Kolesnikov, V. I., Kowalski, M., Kresan, D., Laszlo, A., Lacey, R., van Leeuwen, M., Maćkowiak-Pawłowska, M., Makariev, M., Malakhov, A. I., Melkumov, G. L., Mitrovski, M., Mrówczyński, St., Pálla, G., Panagiotou, A. D., Prindle, D., Pühlhofer, F., Renfordt, R., Roland, C., Roland, G., Rustamov, A., Rybczyński, M., Rybicki, A., Sandoval, A., Schmitz, N., Schuster, T., Seyboth, P., Siklér, F., Skrzypczak, E., Slodkowski, M., Stefanek, G., Stock, R., Ströbele, H., Susa, T., Szuba, M., Varga, D., Vassiliou, M., Veres, G. I., Vesztergombi, G., Vranić, D., Włodarczyk, Z., and Wojtaszek-Szwarc, A.

Subjects
Nuclear Experiment
Abstract

Production of $d$, $t$, and $^3$He nuclei in central Pb+Pb interactions was studied at five collision energies ($\sqrt{s_{NN}}=$ 6.3, 7.6, 8.8, 12.3, and 17.3 GeV) with the NA49 detector at the CERN SPS. Transverse momentum spectra, rapidity distributions, and particle ratios were measured. Yields are compared to predictions of statistical models. Phase-space distributions of light nuclei are discussed and compared to those of protons in the context of a coalescence approach. The coalescence parameters $B_2$ and $B_3$, as well as coalescence radii for $d$ and $^3$He were determined as a function of transverse mass at all energies., Comment: 22 pages, 29 figures, 8 tables, for submission to Phys. Rev. C

Published
2016
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2. Measurement of event-by-event transverse momentum and multiplicity fluctuations using strongly intensive measures $\Delta[P_T, N]$ and $\Sigma[P_T, N]$ in nucleus-nucleus collisions at the CERN Super Proton Synchrotron

Author

NA49 Collaboration, Anticic, T., Baatar, B., Bartke, J., Beck, H., Betev, L., Bialkowska, H., Blume, C., Boimska, B., Book, J., Botje, M., Buncic, P., Christakoglou, P., Chung, P., Chvala, O., Cramer, J., Eckardt, V., Fodor, Z., Foka, P., Friese, V., Gazdzicki, M., Grebieszkow, K., Hohne, C., Kadija, K., Karev, A., Kolesnikov, V., Kowalski, M., Kresan, D., Laszlo, A., Lacey, R., van Leeuwen, M., Mackowiak-Pawlowska, M., Makariev, M., Malakhov, A., Melkumov, G., Mitrovski, M., Mrowczynski, S., Palla, G., Panagiotou, A., Pluta, J., Prindle, D., Puhlhofer, F., Renfordt, R., Roland, C., Roland, G., Rybczynski, M., Rybicki, A., Sandoval, A., Rustamov, A., Schmitz, N., Schuster, T., Seyboth, P., Sikler, F., Skrzypczak, E., Slodkowski, M., Stefanek, G., Stock, R., Strobele, H., Susa, T., Szuba, M., Varga, D., Vassiliou, M., Veres, G., Vesztergombi, G., Vranic, D., Wlodarczyk, Z., and Wojtaszek-Szwarc, A.

Subjects
Nuclear Experiment
Abstract

Results from the NA49 experiment at the CERN SPS are presented on event-by-event transverse momentum and multiplicity fluctuations of charged particles, produced at forward rapidities in central Pb+Pb interactions at beam momenta 20$A$, 30$A$, 40$A$, 80$A$, and 158$A$ GeV/c, as well as in systems of different size ($p+p$, C+C, Si+Si, and Pb+Pb) at 158$A$ GeV/c. This publication extends the previous NA49 measurements of the strongly intensive measure $\Phi_{p_T}$ by a study of the recently proposed strongly intensive measures of fluctuations $\Delta[P_T, N]$ and $\Sigma[P_T, N]$. In the explored kinematic region transverse momentum and multiplicity fluctuations show no significant energy dependence in the SPS energy range. However, a remarkable system size dependence is observed for both $\Delta[P_T, N]$ and $\Sigma[P_T, N]$, with the largest values measured in peripheral Pb+Pb interactions. The results are compared with NA61/SHINE measurements in $p+p$ collisions, as well as with predictions of the UrQMD and EPOS models., Comment: 12 pages, 14 figures, to be submitted to PRC

Published
2015
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4. NA61/SHINE facility at the CERN SPS: beams and detector system

Author

Abgrall, N., Andreeva, O., Aduszkiewicz, A., Ali, Y., Anticic, T., Antoniou, N., Baatar, B., Bay, F., Blondel, A., Blumer, J., Bogomilov, M., Bogusz, M., Bravar, A., Brzychczyk, J., Bunyatov, S. A., Christakoglou, P., Czopowicz, T., Davis, N., Debieux, S., Dembinski, H., Diakonos, F., DiLuise, S., Dominik, W., Drozhzhova, T., Dumarchez, J., Dynowski, K., Engel, R., Efthymiopoulos, I., Ereditato, A., Fabich, A., Feofilov, G. A., Fodor, Z., Fulop, A., Gazdzicki, M., Golubeva, M., Grebieszkow, K., Grzeszczuk, A., Guber, F., Haesler, A., Hasegawa, T., Hierholzer, M., Idczak, R., Igolkin, S., Ivashkin, A., Jokovic, D., Kadija, K., Kapoyannis, A., Kaptur, E., Kielczewska, D., Kirejczyk, M., Kisiel, J., Kiss, T., Kleinfelder, S., Kobayashi, T., Kolesnikov, V. I., Kolev, D., Kondratiev, V. P., Korzenev, A., Koversarski, P., Kowalski, S., Krasnoperov, A., Kurepin, A., Larsen, D., Laszlo, A., Lyubushkin, V. V., Mackowiak-Pawlowska, M., Majka, Z., Maksiak, B., Malakhov, A. I., Maletic, D., Manglunki, D., Manic, D., Marchionni, A., Marcinek, A., Marin, V., Marton, K., Mathes, H. -J., Matulewicz, T., Matveev, V., Melkumov, G. L., Messina, M., Mrowczynski, St., Murphy, S., Nakadaira, T., Nirkko, M., Nishikawa, K., Palczewski, T., Palla, G., Panagiotou, A. D., Paul, T., Peryt, W., Petukhov, O., Pistillo, C., Planeta, R., Pluta, J., Popov, B. A., Posiadala, M., Pulawski, S., Puzovic, J., Rauch, W., Ravonel, M., Redij, A., Renfordt, R., Richter-Was, E., Robert, A., Rohrich, D., Rondio, E., Rossi, B., Roth, M., Rubbia, A., Rustamov, A., Rybczynski, M., Sadovsky, A., Sakashita, K., Savic, M., Schmidt, K., Sekiguchi, T., Seyboth, P., Sgalaberna, D., Shibata, M., Sipos, R., Skrzypczak, E., Slodkowski, M., Sosin, Z., Staszel, P., Stefanek, G., Stepaniak, J., Stroebele, H., Susa, T., Szuba, M., Tada, M., Tereshchenko, V., Tolyhi, T., Tsenov, R., Turko, L., Ulrich, R., Unger, M., Vassiliou, M., Veberic, D., Vechernin, V. V., Vesztergombi, G., Vinogradov, L., Wilczek, A., Wlodarczyk, Z., Wojtaszek-Szwarz, A., Wyszynski, O., Zambelli, L., and Zipper, W.

Subjects
Physics - Instrumentation and Detectors, Nuclear Experiment, 81V36
Abstract

NA61/SHINE (SPS Heavy Ion and Neutrino Experiment) is a multi-purpose experimental facility to study hadron production in hadron-proton, hadron-nucleus and nucleus-nucleus collisions at the CERN Super Proton Synchrotron. It recorded the first physics data with hadron beams in 2009 and with ion beams (secondary 7Be beams) in 2011. NA61/SHINE has greatly profited from the long development of the CERN proton and ion sources and the accelerator chain as well as the H2 beamline of the CERN North Area. The latter has recently been modified to also serve as a fragment separator as needed to produce the Be beams for NA61/SHINE. Numerous components of the NA61/SHINE set-up were inherited from its predecessors, in particular, the last one, the NA49 experiment. Important new detectors and upgrades of the legacy equipment were introduced by the NA61/SHINE Collaboration. This paper describes the state of the NA61/SHINE facility - the beams and the detector system - before the CERN Long Shutdown I, which started in March 2013.

Published
2014
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6. Phase-space dependence of particle-ratio fluctuations in Pb+Pb collisions from 20A to 158A GeV beam energy

Author

Anticic, T., Baatar, B., Barna, D., Bartke, J., Beck, H., Betev, L., Białkowska, H., Blume, C., Boimska, B., Book, J., Botje, M., Bunčić, P., Christakoglou, P., Chung, P., Chvala, O., Cramer, J., Eckardt, V., Fodor, Z., Foka, P., Friese, V., Gaździcki, M., Grebieszkow, K., Höhne, C., Kadija, K., Karev, A., Kolesnikov, V., Kowalski, M., Kresan, D., Laszlo, A., Lacey, R., van Leeuwen, M., Maćkowiak-Pawłowska, M., Makariev, M., Malakhov, A., Melkumov, G., Mitrovski, M., Mrówczyński, S., Pálla, G., Panagiotou, A., Peryt, W., Pluta, J., Prindle, D., Pühlhofer, F., Renfordt, R., Roland, C., Roland, G., Rybczyński, M., Rybicki, A., Sandoval, A., Rustamov, A., Schmitz, N., Schuster, T., Seyboth, P., Siklér, F., Skrzypczak, E., Słodkowski, M., Stefanek, G., Stock, R., Ströbele, H., Susa, T., Szuba, M., Varga, D., Vassiliou, M., Veres, G., Vesztergombi, G., Vranić, D., Włodarczyk, Z., and Wojtaszek-Szwarc, A.

Subjects
Nuclear Experiment, High Energy Physics - Experiment
Abstract

A novel approach, the identity method, was used for particle identification and the study of fluctuations of particle yield ratios in Pb+Pb collisions at the CERN Super Proton Synchrotron (SPS). This procedure allows to unfold the moments of the unknown multiplicity distributions of protons (p), kaons (K), pions ($\pi$) and electrons (e). Using these moments the excitation function of the fluctuation measure $\nu_{\text{\text{dyn}}}$[A,B] was measured, with A and B denoting different particle types. The obtained energy dependence of $\nu_{\text{dyn}}$ agrees with previously published NA49 results on the related measure $\sigma_{\text{dyn}}$. Moreover, $\nu_{\text{dyn}}$ was found to depend on the phase space coverage for [K,p] and [K,$\pi$] pairs. This feature most likely explains the reported differences between measurements of NA49 and those of STAR in central Au+Au collisions.

Published
2013
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7. Measurement of negatively charged pion spectra in inelastic p+p interactions at $p_{lab}$ = 20, 31, 40, 80 and 158 GeV/c

Author

Collaboration, NA61/SHINE, Abgrall, N., Aduszkiewicz, A., Ali, Y., Anticic, T., Antoniou, N., Baatar, B., Bay, F., Blondel, A., Blumer, J., Bogomilov, M., Bravar, A., Brzychczyk, J., Bunyatov, S. A., Busygina, O., Christakoglou, P., Czopowicz, T., Davis, N., Debieux, S., Dembinski, H., Diakonos, F., Di Luise, S., Dominik, W., Drozhzhova, T., Dumarchez, J., Dynowski, K., Engel, R., Ereditato, A., Feofilov, G. A., Fodor, Z., Fulop, A., Gaździcki, M., Golubeva, M., Grebieszkow, K., Grzeszczuk, A., Guber, F., Haesler, A., Hasegawa, T., Hierholzer, M., Idczak, R., Igolkin, S., Ivashkin, A., Joković, D., Kadija, K., Kapoyannis, A., Kaptur, E., Kiełczewska, D., Kirejczyk, M., Kisiel, J., Kiss, T., Kleinfelder, S., Kobayashi, T., Kolesnikov, V. I., Kolev, D., Kondratiev, V. P., Korzenev, A., Kovesarki, P., Kowalski, S., Krasnoperov, A., Kurepin, A., Larsen, D., László, A., Lyubushkin, V. V., Maćkowiak-Pawłowska, M., Majka, Z., Maksiak, B., Malakhov, A. I., Manić, D., Marcinek, A., Marin, V., Marton, K., Mathes, H. -J., Matulewicz, T., Matveev, V., Melkumov, G. L., Mrówczyński, St., Murphy, S., Nakadaira, T., Nirkko, M., Nishikawa, K., Palczewski, T., Palla, G., Panagiotou, A. D., Paul, T., Pistillo, C., Peryt, W., Petukhov, O., Płaneta, R., Pluta, J., Popov, B. A., Posiadała, M., Puławski, S., Puzović, J., Rauch, W., Ravonel, M., Redij, A., Renfordt, R., Robert, A., Röhrich, D., Rondio, E., Roth, M., Rubbia, A., Rustamov, A., Rybczynski, M., Sadovsky, A., Sakashita, K., Savić, M., Schmidt, K., Sekiguchi, T., Seyboth, P., Sgalaberna, D., Shibata, M., Sipos, R., Skrzypczak, E., Słodkowski, M., Staszel, P., Stefanek, G., Stepaniak, J., Ströbele, H., Šuša, T., Szuba, M., Tada, M., Tereshchenko, V., Tolyhi, T., Tsenov, R., Turko, L., Ulrich, R., Unger, M., Vassiliou, M., Veberič, D., Vechernin, V. V., Vesztergombi, G., Vinogradov, L., Wilczek, A., Włodarczyk, Z., Wojtaszek-Szwarc, A., Wyszyński, O., Zambelli, L., and Zipper, W.

Subjects
High Energy Physics - Experiment, Nuclear Experiment
Abstract

We present experimental results on inclusive spectra and mean multiplicities of negatively charged pions produced in inelastic p+p interactions at incident projectile momenta of 20, 31, 40, 80 and 158 GeV/c ($\sqrt{s} = $ 6.3, 7.7, 8.8, 12.3 and 17.3 GeV, respectively). The measurements were performed using the large acceptance NA61/SHINE hadron spectrometer at the CERN Super Proton Synchrotron. Two-dimensional spectra are determined in terms of rapidity and transverse momentum. Their properties such as the width of rapidity distributions and the inverse slope parameter of transverse mass spectra are extracted and their collision energy dependences are presented. The results on inelastic p+p interactions are compared with the corresponding data on central Pb+Pb collisions measured by the NA49 experiment at the CERN SPS. The results presented in this paper are part of the NA61/SHINE ion program devoted to the study of the properties of the onset of deconfinement and search for the critical point of strongly interacting matter. They are required for interpretation of results on nucleus-nucleus and proton-nucleus collisions., Comment: Numerical results available at: https://edms.cern.ch/document/1314605 Updates in v3: Updated version, as accepted for publication

Published
2013
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8. Measurements of Production Properties of K0S mesons and Lambda hyperons in Proton-Carbon Interactions at 31 GeV/c

Author

Abgrall, N., Aduszkiewicz, A., Ali, Y., Anticic, T., Antoniou, N., Argyriades, J., Baatar, B., Blondel, A., Blumer, J., Bogomilov, M., Bravar, A., Brooks, W., Brzychczyk, J., Bunyatov, S. A., Busygina, O., Christakoglou, P., Czopowicz, T., Davis, N., Debieux, S., Dembinski, H., Diakonos, F., Di Luise, S., Dominik, W., Drozhzhova, T., Dumarchez, J., Dynowski, K., Engel, R., Ereditato, A., Esposito, L., Feofilov, G. A., Fodor, Z., Fulop, A., Gaździcki, M., Golubeva, M., Grebieszkow, K., Grzeszczuk, A., Guber, F., Hakobyan, H., Haesler, A., Hasegawa, T., Hierholzer, M., Idczak, R., Igolkin, S., Ivanov, Y., Ivashkin, A., Jokovic, D., Kadija, K., Kapoyannis, A., Katrynska, N., Kaptur, E., Kielczewska, D., Kikola, D., Kirejczyk, M., Kisiel, J., Kiss, T., Kleinfelder, S., Kobayashi, T., Kolesnikov, V. I., Kolev, D., Kondratiev, V. P., Korzenev, A., Kowalski, S., Krasnoperov, A., Kuleshov, S., Kurepin, A., Larsen, D., Laszlo, A., Lyubushkin, V. V., Mackowiak-Pawlowska, M., Majka, Z., Maksiak, B., Malakhov, A. I., Maletic, D., Manic, D., Marchionni, A., Marcinek, A., Marin, V., Marton, K., Mathes, H. -J., Matulewicz, T., Matveev, V., Melkumov, G. L., Mrówczyński, St., Murphy, S., Nakadaira, T., Nirkko, M., Nishikawa, K., Palczewski, T., Palla, G., Panagiotou, A. D., Paul, T., Peryt, W., Pistillo, C., Redij, A., Petukhov, O., Planeta, R., Pluta, J., Popov, B. A., Posiadała, M., Puławski, S., Puzovic, J., Rauch, W., Ravonel, M., Renfordt, R., Robert, A., Röhrich, D., Rondio, E., Roth, M., Rubbia, A., Rustamov, A., Rybczynski, M., Sadovsky, A., Sakashita, K., Savic, M., Schmidt, K., Sekiguchi, T., Seyboth, P., Shibata, M., Sipos, R., Skrzypczak, E., Slodkowski, M., Staszel, P., Stefanek, G., Stepaniak, J., Susa, T., Szuba, M., Tada, M., Tereshchenko, V., Tolyhi, T., Tsenov, R., Turko, L., Ulrich, R., Unger, M., Vassiliou, M., Veberic, D., Vechernin, V. V., Vesztergombi, G., Vinogradov, L., Wilczek, A., Wlodarczyk, Z., Wojtaszek, A., Wyszyński, O., Zambelli, L., and Zipper, W.

Subjects
Physics - Accelerator Physics, Nuclear Experiment
Abstract

Spectra of K0S mesons and Lambda hyperons were measured in p+C interactions at 31 GeV/c with the large acceptance NA61/SHINE spectrometer at the CERN SPS. The data were collected with an isotropic graphite target with a thickness of 4% of a nuclear interaction length. Interaction cross sections, charged pion spectra, and charged kaon spectra were previously measured using the same data set. Results on K0S and Lambda production in p+C interactions serve as reference for the understanding of the enhancement of strangeness production in nucleus-nucleus collisions. Moreover, they provide important input for the improvement of neutrino flux predictions for the T2K long baseline neutrino oscillation experiment in Japan. Inclusive production cross sections for K0S and Lambda are presented as a function of laboratory momentum in intervals of the laboratory polar angle covering the range from 0 up to 240 mrad. The results are compared with predictions of several hadron production models. The K0S mean multiplicity in production processes and the inclusive cross section for K0S production were measured and amount to 0.127 +- 0.005 (stat) +- 0.022 (sys) and 29.0 +- 1.6 (stat) +- 5.0 (sys) mb, respectively.

Published
2013
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9. Critical fluctuations of the proton density in A+A collisions at $158A$ GeV

Author

Anticic, T., Baatar, B., Barna, D., Bartke, J., Beck, J., Betev, L., Białkowska, H., Blume, C., Bogusz, M., Boimska, B., Book, J., Botje, M., Bunčić, P., Cetner, T., Christakoglou, P., Chung, P., Chvala, O., Cramer, J., Eckardt, V., Fodor, Z., Foka, P., Friese, V., Gaździcki, M., Grebieszkow, K., Höhne, C., Kadija, K., Karev, A., Kolesnikov, V. I., Kowalski, M., Kresan, D., Laszlo, A., Lacey, R., van Leeuwen, M., Maćkowiak-Pawłowska, M., Makariev, M., Malakhov, A. I., Mateev, M., Melkumov, G. L., Mitrovski, M., Mrówczyński, St., Pálla, G., Panagiotou, A. D., Peryt, W., Pluta, J., Prindle, D., Pühlhofer, F., Renfordt, R., Roland, C., Roland, G., Rustamov, A., Rybczyński, M., Rybicki, A., Sandoval, A., Schmitz, N., Schuster, T., Seyboth, P., Siklér, F., Skrzypczak, E., Slodkowski, M., Stefanek, G., Stock, R., Ströbele, H., Susa, T., Szuba, M., Varga, D., Vassiliou, M., Veres, G. I., Vesztergombi, G., Vranić, D., Włodarczyk, Z., Wojtaszek-Szwarć, A., Antoniou, N. G., Davis, N., and Diakonos, F. K.

Subjects
Nuclear Experiment, High Energy Physics - Experiment, High Energy Physics - Phenomenology
Abstract

We look for fluctuations expected for the QCD critical point using an intermittency analysis in the transverse momentum phase space of protons produced around midrapidity in the 12.5\% most central C+C, Si+Si and Pb+Pb collisions at the maximum SPS energy of 158$A$~GeV. We find evidence of power-law fluctuations for the Si+Si data. The fitted power-law exponent $\phi_{2} = 0.96^{+0.38}_{-0.25}\text{ (stat.)}$ $\pm 0.16\text{ (syst.)}$ is consistent with the va\-lue expected for critical fluctuations. Power-law fluctuations had previously also been observed in low-mass $\pi^+ \pi^-$ pairs in the same Si+Si collisions., Comment: 16 pages, 7 figures

Published
2012

10. Pion emission from the T2K replica target: method, results and application

Author

Abgrall, N., Aduszkiewicz, A., Anticic, T., Antoniou, N., Argyriades, J., Baatar, B., Blondel, A., Blumer, J., Bogomilov, M., Bravar, A., Brooks, W., Brzychczyk, J., Bubak, A., Bunyatov, S. A., Busygina, O., Christakoglou, P., Chung, P., Czopowicz, T., Davis, N., Debieux, S., Di Luise, S., Dominik, W., Dumarchez, J., Dynowski, K., Engel, R., Ereditato, A., Esposito, L. S., Feofilov, G. A., Fodor, Z., Ferrero, A., Fulop, A., Gazdzicki, M., Golubeva, M., Grabez, B., Grebieszkow, K., Grzeszczuk, A., Guber, F., Haesler, A., Hakobyan, H., Hasegawa, T., Idczak, R., Igolkin, S., Ivanov, Y., Ivashkin, A., Kadija, K., Kapoyannis, A., Katrynska, N., Kielczewska, D., Kikola, D., Kirejczyk, M., Kisiel, J., Kiss, T., Kleinfelder, S., Kobayashi, T., Kochebina, O., Kolesnikov, V. I., Kolev, D., Kondratiev, V. P., Korzenev, A., Kowalski, S., Krasnoperov, A., Kuleshov, S., Kurepin, A., Lacey, R., Larsen, D., Laszlo, A., Lyubushkin, V. V., Mackowiak-Pawlowska, M., Majka, Z., Maksiak, B., Malakhov, A. I., Maletic, D., Marchionni, A., Marcinek, A., Maris, I., Marin, V., Marton, K., Matulewicz, T., Matveev, V., Melkumov, G. L., Messina, M., Mrowczynski, St., Murphy, S., Nakadaira, T., Nishikawa, K., Palczewski, T., Palla, G., Panagiotou, A. D., Paul, T., Peryt, W., Petukhov, O., Planeta, R., Pluta, J., Popov, B. A., Posiadala, M., Pulawski, S., Puzovic, J., Rauch, W., Ravonel, M., Renfordt, R., Robert, A., Rohrich, D., Rondio, E., Rossi, B., Roth, M., Rubbia, A., Rustamov, A., Rybczynski, M., Sadovsky, A., Sakashita, K., Savic, M., Sekiguchi, T., Seyboth, P., Shibata, M., Sipos, R., Skrzypczak, E., Slodkowski, M., Staszel, P., Stefanek, G., Stepaniak, J., Strabel, C., Strobele, H., Susa, T., Szuba, M., Tada, M., Taranenko, A., Tereshchenko, V., Tolyhi, T., Tsenov, R., Turko, L., Ulrich, R., Unger, M., Vassiliou, M., Veberic, D., Vechernin, V. V., Vesztergombi, G., Wilczek, A., Wlodarczyk, Z., Wojtaszek-Szwarc, A., Wyszynski, O., Zambelli, L., Zipper, W., Galymov, V., Hartz, M., Ichikawa, A. K., Kubo, H., Marino, A. D., Matsuoka, K., Murakami, A., Nakaya, T., Suzuki, K., Yuan, T., and Zimmerman, E. D.

Subjects
High Energy Physics - Experiment, Nuclear Experiment
Abstract

The T2K long-baseline neutrino oscillation experiment in Japan needs precise predictions of the initial neutrino flux. The highest precision can be reached based on detailed measurements of hadron emission from the same target as used by T2K exposed to a proton beam of the same kinetic energy of 30 GeV. The corresponding data were recorded in 2007-2010 by the NA61/SHINE experiment at the CERN SPS using a replica of the T2K graphite target. In this paper details of the experiment, data taking, data analysis method and results from the 2007 pilot run are presented. Furthermore, the application of the NA61/SHINE measurements to the predictions of the T2K initial neutrino flux is described and discussed., Comment: updated version as published by NIM A

Published
2012
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11. System-size and centrality dependence of charged kaon and pion production in nucleus-nucleus collisions at 40A GeV and158A GeV beam energy

Author

NA49 Collaboration, Anticic, T., Baatar, B., Barna, D., Bartke, J., Beck, H., Betev, L., Bialkowska, H., Blume, C., Bogusz, M., Boimska, B., Book, J., Botje, M., Buncic, P., Cetner, T., Christakoglou, P., Chung, P., Chvala, O., Cramer, J. G., Dinkelaker, P., Eckardt, V., Fodor, Z., Foka, P., Friese, V., Gazdzicki, M., Grebieszkow, K., Höhne, C., Kadija, K., Karev, A., Kliemant, M., Kolesnikov, V. I., Kollegger, T., Kowalski, M., Kresan, D., Laszlo, A., Lacey, R., van Leeuwen, M., Lungwitz, B., Mackowiak, M., Makariev, M., Malakhov, A. I., Mateev, M., Melkumov, G. L., Mitrovski, M., Mrowczynski, St., Nicolic, V., Palla, G., Panagiotou, A. D., Peryt, W., Pluta, J., Prindle, D., Pühlhofer, F., Renfordt, R., Roland, C., Roland, G., Rybczynski, M., Rybicki, 1 A., Sandoval, A., Schmitz, N., Schuster, T., Seyboth, P., Sikler, F., Skrzypczak, E., Slodkowski, M., Stefanek, G., Stock, R., Ströbele, H., Susa, T., Szuba, M., Utvic, M., Varga, D., Vassiliou, M., Veres, G. I., Vesztergombi, G., Vranic, D., Wlodarczyk, Z., and Wojtaszek-Szwarc, A.

Subjects
Nuclear Experiment
Abstract

Measurements of charged pion and kaon production are presented in centrality selected Pb+Pb collisions at 40A GeV and 158A GeV beam energy as well as in semi-central C+C and Si+Si interactions at 40A GeV. Transverse mass spectra, rapidity spectra and total yields are determined as a function of centrality. The system-size and centrality dependence of relative strangeness production in nucleus-nucleus collisions at 40A GeV and 158A GeV beam energy are derived from the data presented here and published data for C+C and Si+Si collisions at 158A GeV beam energy. At both energies a steep increase with centrality is observed for small systems followed by a weak rise or even saturation for higher centralities. This behavior is compared to calculations using transport models (UrQMD and HSD), a percolation model and the core-corona approach., Comment: 32 pages, 14 figures, 4 tables, typo table II corrected

Published
2012
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12. Measurement of Production Properties of Positively Charged Kaons in Proton-Carbon Interactions at 31 GeV/c

Author

Collaboration, The NA61/SHINE, Abgrall, N., Aduszkiewicz, A., Anticic, T., Antoniou, N., Argyriades, J., Baatar, B., Blondel, A., Blumer, J., Bogusz, M., Boldizsar, L., Bravar, A., Brooks, W., Brzychczyk, J., Bubak, A., Bunyatov, S. A., Busygina, O., Cetner, T., Choi, K. -U., Christakoglou, P., Chung, P., Czopowicz, T., Davis, N., Diakonos, F., Di Luise, S., Dominik, W., Dumarchez, J., Engel, R., Ereditato, A., Esposito, L. S., Feofilov, G. A., Fodor, Z., Ferrero, A., Fulop, A., Garrido, X., Gazdzicki, M., Golubeva, M., Grebieszkow, K., Grzeszczuk, A., Guber, F., Haesler, A., Hakobyan, H., Hasegawa, T., Idczak, R., Ivanov, Y., Ivashkin, A., Kadija, K., Kapoyannis, A., Katrynska, N., Kielczewska, D., Kikola, D., Kim, J. -H., Kirejczyk, M., Kisiel, J., Kobayashi, T., Kochebina, O., Kolesnikov, V. I., Kolev, D., Kondratiev, V. P., Korzenev, A., Kowalski, S., Krasnoperov, A., Kuleshov, S., Kurepin, A., Lacey, R., Lagoda, J., Laszlo, A., Lyubushkin, V. V., Mackowiak-Pawlowska, M., Majka, Z., Malakhov, A. I., Marchionni, A., Marcinek, A., Maris, I., Marin, V., Matulewicz, T., Matveev, V., Melkumov, G. L., Meregaglia, A., Messina, M., Mrowczynski, St., Murphy, S., Nakadaira, T., Nishikawa, K., Palczewski, T., Palla, G., Panagiotou, A. D., Paul, T., Peryt, W., Petukhov, O., Planeta, R., Pluta, J., Popov, B. A., Posiadala, M., Pulawski, S., Rauch, W., Ravonel, M., Renfordt, R., Robert, A., Rohrich, D., Rondio, E., Rossi, B., Roth, M., Rubbia, A., Rybczynski, M., Sadovsky, A., Sakashita, K., Sekiguchi, T., Seyboth, P., Shibata, M., Skrzypczak, E., Slodkowski, M., Staszel, P., Stefanek, G., Stepaniak, J., Strabel, C., Strobele, H., Susa, T., Szaflik, P., Szuba, M., Tada, M., Taranenko, A., Tereshchenko, V., Tsenov, R., Turko, L., Ulrich, R., Unger, M., Vassiliou, M., Veberic, D., Vechernin, V. V., Vesztergombi, G., Wilczek, A., Wlodarczyk, Z., Wojtaszek-Szwarc, A., Yi, J. -G., Yoo, I. -K., Zambelli, L., and Zipper, W.

Subjects
High Energy Physics - Experiment
Abstract

Spectra of positively charged kaons in p+C interactions at 31 GeV/c were measured with the NA61/SHINE spectrometer at the CERN SPS. The analysis is based on the full set of data collected in 2007 with a graphite target with a thickness of 4% of a nuclear interaction length. Interaction cross sections and charged pion spectra were already measured using the same set of data. These new measurements in combination with the published ones are required to improve predictions of the neutrino flux for the T2K long baseline neutrino oscillation experiment in Japan. In particular, the knowledge of kaon production is crucial for precisely predicting the intrinsic electron neutrino component and the high energy tail of the T2K beam. The results are presented as a function of laboratory momentum in 2 intervals of the laboratory polar angle covering the range from 20 up to 240 mrad. The kaon spectra are compared with predictions of several hadron production models. Using the published pion results and the new kaon data, the K+/\pi+ ratios are computed., Comment: 10 pages, 11 figures

Published
2011
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13. Proton -- Lambda Correlations in Central Pb+Pb Collisions at sqrt(s_{NN}) = 17.3 GeV

Author

Anticic, T., Baatar, B., Barna, D., Bartke, J., Beck, H., Betev, L., Bialkowska, H., Blume, C., Bogusz, M., Boimska, B., Book, J., Botje, M., Buncic, P., Cetner, T., Christakoglou, P., Chung, P., Chvala, O., Cramer, J., Eckardt, V., Fodor, Z., Foka, P., Friese, V., Gazdzicki, M., Grebieszkow, K., Hohne, C., Kadija, K., Karev, A., Kolesnikov, V., Kowalski, M., Kresan, D., Laszlo, A., Lacey, R., van Leeuwen, M., Mackowiak, M. K., Makariev, M., Malakhov, A., Mateev, M., Melkumov, G., Mitrovski, M., Mrowczynski, St., Nicolic, V., Palla, G., Panagiotou, A., Peryt, W., Pluta, J., Prindle, D., Puhlhofer, F., Renfordt, R., Roland, C., Roland, G., Rybczynski, M., Rybicki, A., Sandoval, A., Schmitz, N., Schuster, T., Seyboth, P., Sikler, F., Skrzypczak, E., Slodkowski, M., Stefanek, G., Stock, R., Strobele, H., Susa, T., Szuba, M., Utvic, M., Varga, D., Vassiliou, M., Veres, G., Vesztergombi, G., Vranic, D., Wlodarczyk, Z., and Wojtaszek-Szwarc, A.

Subjects
Nuclear Experiment, High Energy Physics - Phenomenology
Abstract

The momentum correlation between protons and lambda particles emitted from central Pb+Pb collisions at sqrt(s_{NN}) = 17.3 GeV was studied by the NA49 experiment at the CERN SPS. A clear enhancement is observed for small relative momenta (q_{inv} < 0.2 GeV). By fitting a theoretical model, which uses the strong interaction between the proton and the lambda in a given pair, to the measured data a value for the effective source size is deduced. Assuming a static Gaussian source distribution we derive an effective radius parameter of R_G = 3.02 \pm 0.20$(stat.)^{+0.44}_{-0.16}(syst.) fm., Comment: 14 pages, 9 figures, submitted to Phys. Rev. C

Published
2011
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14. Measurements of Cross Sections and Charged Pion Spectra in Proton-Carbon Interactions at 31 GeV/c

Author

Abgrall, N., Aduszkiewicz, A., Andrieu, B., Anticic, T., Antoniou, N., Argyriades, J., Asryan, A. G., Baatar, B., Blondel, A., Blumer, J., Bogusz, M., Boldizsar, L., Bravar, A., Brooks, W., Brzychczyk, J., Bubak, A., Bunyatov, S. A., Busygina, O., Cetner, T., Choi, K. -U., Christakoglou, P., Chung, P., Czopowicz, T., Davis, N., Diakonos, F., Di Luise, S., Dominik, W., Dumarchez, J., Engel, R., Ereditato, A., Esposito, L. S., Feofilov, G. A., Fodor, Z., Ferrero, A., Fulop, A., Garrido, X., Gazdzicki, M., Golubeva, M., Grebieszkow, K., Grzeszczuk, A., Guber, F., Hakobyan, H., Hasegawa, T., Igolkin, S., Ivanov, A. S., Ivanov, Y., Ivashkin, A., Kadija, K., Kapoyannis, A., Katrynska, N., Kielczewska, D., Kikola, D., Kim, J. -H., Kirejczyk, M., Kisiel, J., Kobayashi, T., Kochebina, O., Kolesnikov, V. I., Kolev, D., Kondratiev, V. P., Korzenev, A., Kowalski, S., Kuleshov, S., Kurepin, A., Lacey, R., Lagoda, J., Laszlo, A., Lyubushkin, V. V., Mackowiak, M., Majka, Z., Malakhov, A. I., Marchionni, A., Marcinek, A., Maris, I., Marin, V., Matulewicz, T., Matveev, V., Melkumov, G. L., Meregaglia, A., Messina, M., Mrowczynski, St., Murphy, S., Nakadaira, T., Naumenko, P. A., Nishikawa, K., Palczewski, T., Palla, G., Panagiotou, A. D., Peryt, W., Petukhov, O., Planeta, R., Pluta, J., Popov, B. A., Posiadala, M., Pulawski, S., Rauch, W., Ravonel, M., Renfordt, R., Robert, A., Rohrich, D., Rondio, E., Rossi, B., Roth, M., Rubbia, A., Rybczynski, M., Sadovsky, A., Sakashita, K., Sekiguchi, T., Seyboth, P., Shibata, M., Sissakian, A. N., Skrzypczak, E., Slodkowski, M., Sorin, A. S., Staszel, P., Stefanek, G., Stepaniak, J., Strabel, C., Strobele, H., Susa, T., Szaflik, P., Szuba, M., Tada, M., Taranenko, A., Tsenov, R., Ulrich, R., Unger, M., Vassiliou, M., Vechernin, V. V., Vesztergombi, G., Wilczek, A., Wlodarczyk, Z., Wojtaszek, A., Yi, J. -G., Yoo, I. -K., and Zipper, W.

Subjects
High Energy Physics - Experiment
Abstract

Interaction cross sections and charged pion spectra in p+C interactions at 31 GeV/c were measured with the large acceptance NA61/SHINE spectrometer at the CERN SPS. These data are required to improve predictions of the neutrino flux for the T2K long baseline neutrino oscillation experiment in Japan. A set of data collected during the first NA61/SHINE run in 2007 with an isotropic graphite target with a thickness of 4% of a nuclear interaction length was used for the analysis. The measured p+C inelastic and production cross sections are 257.2 +- 1.9 +- 8.9 mb and 229.3 +- 1.9 +- 9.0 mb, respectively. Inclusive production cross sections for negatively and positively charged pions are presented as a function of laboratory momentum in 10 intervals of the laboratory polar angle covering the range from 0 up to 420 mrad. The spectra are compared with predictions of several hadron production models., Comment: updated version; as published by Phys. Rev. C

Published
2011
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15. Energy dependence of kaon-to-proton ratio fluctuations in central Pb+Pb collisions from $\sqrt{s_{NN}}$ = 6.3 to 17.3 GeV

Author

Anticic, T., Baatar, B., Barna, D., Bartke, J., Beck, H., Betev, L., Białkowska, H., Blume, C., Bogusz, M., Boimska, B., Book, J., Botje, M., Bunčić, P., Cetner, T., Christakoglou, P., Chung, P., Chvala, O., Cramer, J. G., Eckardt, V., Fodor, Z., Foka, P., Friese, V., Gaździcki, M., Grebieszkow, K., Höhne, C., Kadija, K., Karev, A., Kolesnikov, V. I., Kollegger, T., Kowalski, M., Kresan, D., Laszlo, A., Lacey, R., van Leeuwen, M., Mackowiak, M., Makariev, M., Malakhov, A. I., Mateev, M., Melkumov, G. L., Mitrovski, M., Mrówczyński, St., Nicolic, V., Pálla, G., Panagiotou, A. D., Peryt, W., Pluta, J., Prindle, D., Pühlhofer, F., Renfordt, R., Roland, C., Roland, G., Rybczyński, M., Rybicki, A., Sandoval, A., Schmitz, N., Schuster, T., Seyboth, P., Siklér, F., Skrzypczak, E., Slodkowski, M., Stefanek, G., Stock, R., Ströbele, H., Susa, T., Szuba, M., Utvić, M., Varga, D., Vassiliou, M., Veres, G. I., Vesztergombi, G., Vranić, D., Włodarczyk, Z., and Wojtaszek-Szwarc, A.

Subjects
Nuclear Experiment
Abstract

Kaons and protons carry large parts of two conserved quantities, strangeness and baryon number. It is argued that their correlation and thus also fluctuations are sensitive to conditions prevailing at the anticipated parton-hadron phase boundary. Fluctuations of the $(\mathrm{K}^+ + \mathrm{K}^-)/(\mathrm{p}+\bar{\mathrm{p}})$ and $\mathrm{K}^+/\mathrm{p}$ ratios have been measured for the first time by NA49 in central Pb+Pb collisions at 5 SPS energies between $\sqrt{s_{NN}}$= 6.3 GeV and 17.3 GeV. Both ratios exhibit a change of sign in $\sigma_{\mathrm{dyn}}$, a measure of non-statistical fluctuations, around $\sqrt{s_{NN}}$ = 8 GeV. Below this energy, $\sigma_{\mathrm{dyn}}$ is positive, indicating higher fluctuation compared to a mixed event background sample, while for higher energies, $\sigma_{\mathrm{dyn}}$ is negative, indicating correlated emission of kaons and protons. The results are compared to UrQMD calculations which which give a good description at the higher SPS energies, but fail to reproduce the transition to positive values., Comment: 5 pages, 4 figures

Published
2011
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16. Rotated multifractal network generator

Author

Palla, G., Pollner, P., and Vicsek, T.

Subjects
Physics - Data Analysis, Statistics and Probability, Mathematical Physics, Physics - Physics and Society, Statistics - Methodology
Abstract

The recently introduced multifractal network generator (MFNG), has been shown to provide a simple and flexible tool for creating random graphs with very diverse features. The MFNG is based on multifractal measures embedded in 2d, leading also to isolated nodes, whose number is relatively low for realistic cases, but may become dominant in the limiting case of infinitely large network sizes. Here we discuss the relation between this effect and the information dimension for the 1d projection of the link probability measure (LPM), and argue that the node isolation can be avoided by a simple transformation of the LPM based on rotation., Comment: Accepted for publication in JSTAT

Published
2011
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17. Centrality dependence of proton and antiproton spectra in Pb+Pb collisions at 40A GeV and 158A GeV measured at the CERN SPS

Author

Anticic, T., Baatar, B., Barna, D., Bartke, J., Beck, H., Betev, L., Bialkowska, H., Blume, C., Bogusz, M., Boimska, B., Book, J., Botje, M., Buncic, P., Cetner, T., Christakoglou, P., Chung, P., Chvala, O., Cramer, J. G., Eckardt, V., Fodor, Z., Foka, P., Friese, V., Gazdzicki, M., Grebieszkow, K., Höhne, C., Kadija, K., Karev, A., Kolesnikov, V. I., Kowalski, M., Kresan, D., Laszlo, A., Lacey, R., van Leeuwen, M., Mackowiak, M., Makariev, M., Malakhov, A. I., Mateev, M., Melkumov, G. L., Mitrovski, M., Mrowczynski, S., Nicolic, V., Pálla, G., Panagiotou, A. D., Peryt, W., Pluta, J., Prindle, D., Pühlhofer, F., Renfordt, R., Roland, C., Roland, G., Rybczyński, M., Rybicki, A., Sandoval, A., Schmitz, N., Schuster, T., Seyboth, P., Sikler, F., Skrzypczak, E., Slodkowski, M., Stefanek, G., Stock, R., Strobele, H., Susa, T., Szuba, M., Utvic, M., Varga, D., Veres, M. Vassiliou G. I., Vesztergombi, G., Vranic, D., Włodarczyk, Z., and Wojtaszek-Szwarc, A.

Subjects
Nuclear Experiment
Abstract

The yields of (anti-)protons were measured by the NA49 Collaboration in centrality selected Pb+Pb collisions at 40A GeV and 158A GeV. Particle identification was obtained in the laboratory momentum range from 5 to 63 GeV/c by the measurement of the energy loss dE/dx in the TPC detector gas. The corresponding rapidity coverage extends 1.6 units from mid-rapidity into the forward hemisphere. Transverse mass spectra, the rapidity dependences of the average transverse mass, and rapidity density distributions were studied as a function of collision centrality. The values of the average transverse mass as well as the midrapidity yields of protons when normalized to the number of wounded nucleons show only modest centrality dependences. In contrast, the shape of the rapidity distribution changes significantly with collision centrality, especially at 40A GeV. The experimental results are compared to calculations of the HSD and UrQMD transport models., Comment: 25 pages, 12 figures, submitted to PRC

Published
2010
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18. Multifractal Network Generator

Author

Palla, G., Lovasz, L., and Vicsek, T.

Subjects
Physics - Data Analysis, Statistics and Probability, Mathematical Physics, Physics - Physics and Society, Statistics - Methodology
Abstract

We introduce a new approach to constructing networks with realistic features. Our method, in spite of its conceptual simplicity (it has only two parameters) is capable of generating a wide variety of network types with prescribed statistical properties, e.g., with degree- or clustering coefficient distributions of various, very different forms. In turn, these graphs can be used to test hypotheses, or, as models of actual data. The method is based on a mapping between suitably chosen singular measures defined on the unit square and sparse infinite networks. Such a mapping has the great potential of allowing for graph theoretical results for a variety of network topologies. The main idea of our approach is to go to the infinite limit of the singular measure and the size of the corresponding graph simultaneously. A very unique feature of this construction is that the complexity of the generated network is increasing with the size. We present analytic expressions derived from the parameters of the -- to be iterated-- initial generating measure for such major characteristics of graphs as their degree, clustering coefficient and assortativity coefficient distributions. The optimal parameters of the generating measure are determined from a simple simulated annealing process. Thus, the present work provides a tool for researchers from a variety of fields (such as biology, computer science, biology, or complex systems) enabling them to create a versatile model of their network data., Comment: Preprint. Final version appeared in PNAS.

Published
2010
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19. What makes a phase transition? Analysis of the random satisfiability problem

Author

Zweig, K. A., Palla, G., and Vicsek, T.

Subjects
Physics - Data Analysis, Statistics and Probability, Computer Science - Computational Complexity, Physics - Computational Physics
Abstract

In the last 30 years it was found that many combinatorial systems undergo phase transitions. One of the most important examples of these can be found among the random k-satisfiability problems (often referred to as k-SAT), asking whether there exists an assignment of Boolean values satisfying a Boolean formula composed of clauses with k random variables each. The random 3-SAT problem is reported to show various phase transitions at different critical values of the ratio of the number of clauses to the number of variables. The most famous of these occurs when the probability of finding a satisfiable instance suddenly drops from 1 to 0. This transition is associated with a rise in the hardness of the problem, but until now the correlation between any of the proposed phase transitions and the hardness is not totally clear. In this paper we will first show numerically that the number of solutions universally follows a lognormal distribution, thereby explaining the puzzling question of why the number of solutions is still exponential at the critical point. Moreover we provide evidence that the hardness of the closely related problem of counting the total number of solutions does not show any phase transition-like behavior. This raises the question of whether the probability of finding a satisfiable instance is really an order parameter of a phase transition or whether it is more likely to just show a simple sharp threshold phenomenon. More generally, this paper aims at starting a discussion where a simple sharp threshold phenomenon turns into a genuine phase transition.

Published
2010
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20. NA61/SHINE facility at the CERN SPS: beams and detector system

Author

Abgrall, N, Andreeva, O, Aduszkiewicz, A, Ali, Y, Anticic, T, Antoniou, N, Baatar, B, Bay, F, Blondel, A, Blumer, J, Bogomilov, M, Bogusz, M, Bravar, A, Brzychczyk, J, Bunyatov, SA, Christakoglou, P, Cirkovic, M, Czopowicz, T, Davis, N, Debieux, S, Dembinski, H, Diakonos, F, Di Luise, S, Dominik, W, Drozhzhova, T, Dumarchez, J, Dynowski, K, Engel, R, Efthymiopoulos, I, Ereditato, A, Fabich, A, Feofilov, GA, Fodor, Z, Fulop, A, Gaździcki, M, Golubeva, M, Grebieszkow, K, Grzeszczuk, A, Guber, F, Haesler, A, Hasegawa, T, Hierholzer, M, Idczak, R, Igolkin, S, Ivashkin, A, Jokovic, D, Kadija, K, Kapoyannis, A, Kaptur, E, Kielczewska, D, Kirejczyk, M, Kisiel, J, Kiss, T, Kleinfelder, S, Kobayashi, T, Kolesnikov, VI, Kolev, D, Kondratiev, VP, Korzenev, A, Koversarski, P, Kowalski, S, Krasnoperov, A, Kurepin, A, Larsen, D, Laszlo, A, Lyubushkin, VV, Maćkowiak-Pawłowska, M, Majka, Z, Maksiak, B, Malakhov, AI, Maletic, D, Manglunki, D, Manic, D, Marchionni, A, Marcinek, A, Marin, V, Marton, K, Mathes, H-J, Matulewicz, T, Matveev, V, Melkumov, GL, Messina, M, Mrówczyński, St, Murphy, S, Nakadaira, T, Nirkko, M, Nishikawa, K, Palczewski, T, Palla, G, Panagiotou, AD, Paul, T, Peryt, W, Petukhov, O, Pistillo, C, Płaneta, R, Pluta, J, Popov, BA, Posiadala, M, Puławski, S, and Puzovic, J

Subjects
Particle identification methods, Time projection chambers, Instrumentation for radioactive beams (fragmentation devices, fragment and isotope, separators incl. ISOL, isobar separators, ion and atom traps, weak-beam diagnostics, radioactive-beam ion sources), Trigger detectors, physics.ins-det, nucl-ex, 81V36, Physical Sciences, Engineering, Nuclear & Particles Physics
Abstract

NA61/SHINE (SPS Heavy Ion and Neutrino Experiment) is a multi-purpose experimental facility to study hadron production in hadron-proton, hadron-nucleus and nucleus-nucleus collisions at the CERN Super Proton Synchrotron. It recorded the first physics data with hadron beams in 2009 and with ion beams (secondary 7Be beams) in 2011. NA61/SHINE has greatly profited from the long development of the CERN proton and ion sources and the accelerator chain as well as the H2 beamline of the CERN North Area. The latter has recently been modified to also serve as a fragment separator as needed to produce the Be beams for NA61/SHINE. Numerous components of the NA61/SHINE set-up were inherited from its predecessors, in particular, the last one, the NA49 experiment. Important new detectors and upgrades of the legacy equipment were introduced by the NA61/SHINE Collaboration. This paper describes the state of the NA61/SHINE facility - the beams and the detector system - before the CERN Long Shutdown I, which started in March 2013. © CERN 2014 for the benefit of the NA61/SHINE collaboration..

Published
2014

21. Measurement of negatively charged pion spectra in inelastic p plus p interactions at p(lab)=20, 31, 40, 80 and 158 GeV/c

Author

Abgrall, N, Aduszkiewicz, A, Ali, Y, Anticic, T, Antoniou, N, Baatar, B, Bay, F, Blondel, A, Blumer, J, Bogomilov, M, Bravar, A, Brzychczyk, J, Bunyatov, SA, Busygina, O, Christakoglou, P, Czopowicz, T, Davis, N, Debieux, S, Dembinski, H, Diakonos, F, Di Luise, S, Dominik, W, Drozhzhova, T, Dumarchez, J, Dynowski, K, Engel, R, Ereditato, A, Feofilov, GA, Fodor, Z, Fulop, A, Gazdzicki, M, Golubeva, M, Grebieszkow, K, Grzeszczuk, A, Guber, F, Haesler, A, Hasegawa, T, Hierholzer, M, Idczak, R, Igolkin, S, Ivashkin, A, Jokovic, D, Kadija, K, Kapoyannis, A, Kaptur, E, Kielczewska, D, Kirejczyk, M, Kisiel, J, Kiss, T, Kleinfelder, S, Kobayashi, T, Kolesnikov, VI, Kolev, D, Kondratiev, VP, Korzenev, A, Kovesarki, P, Kowalski, S, Krasnoperov, A, Kurepin, A, Larsen, D, Laszlo, A, Lyubushkin, VV, Mackowiak-Pawlowska, M, Majka, Z, Maksiak, B, Malakhov, AI, Manic, D, Marcinek, A, Marin, V, Marton, K, Mathes, H-J, Matulewicz, T, Matveev, V, Melkumov, GL, Mrowczynski, St, Murphy, S, Nakadaira, T, Nirkko, M, Nishikawa, K, Palczewski, T, Palla, G, Panagiotou, AD, Paul, T, Pistillo, C, Peryt, W, Petukhov, O, Planeta, R, Pluta, J, Popov, BA, Posiadala, M, Pulawski, S, Puzovic, J, Rauch, W, Ravonel, M, Redij, A, Renfordt, R, Robert, A, Roehrich, D, Rondio, E, and Roth, M

Subjects
hep-ex, nucl-ex, Nuclear & Particles Physics, Quantum Physics, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Atomic, Molecular, Nuclear, Particle and Plasma Physics
Abstract

We present experimental results on inclusive spectra and mean multiplicitiesof negatively charged pions produced in inelastic p+p interactions at incidentprojectile momenta of 20, 31, 40, 80 and 158 GeV/c ($\sqrt{s} = $ 6.3, 7.7,8.8, 12.3 and 17.3 GeV, respectively). The measurements were performed usingthe large acceptance NA61/SHINE hadron spectrometer at the CERN Super ProtonSynchrotron. Two-dimensional spectra are determined in terms of rapidity and transversemomentum. Their properties such as the width of rapidity distributions and theinverse slope parameter of transverse mass spectra are extracted and theircollision energy dependences are presented. The results on inelastic p+pinteractions are compared with the corresponding data on central Pb+Pbcollisions measured by the NA49 experiment at the CERN SPS. The results presented in this paper are part of the NA61/SHINE ion programdevoted to the study of the properties of the onset of deconfinement and searchfor the critical point of strongly interacting matter. They are required forinterpretation of results on nucleus-nucleus and proton-nucleus collisions.

Published
2014

22. Measurement of negatively charged pion spectra in inelastic p+p interactions at plab= 20, 31, 40, 80 and 158 GeV/c

Author

Abgrall, N, Aduszkiewicz, A, Ali, Y, Anticic, T, Antoniou, N, Baatar, B, Bay, F, Blondel, A, Blumer, J, Bogomilov, M, Bravar, A, Brzychczyk, J, Bunyatov, SA, Busygina, O, Christakoglou, P, Czopowicz, T, Davis, N, Debieux, S, Dembinski, H, Diakonos, F, Luise, S Di, Dominik, W, Drozhzhova, T, Dumarchez, J, Dynowski, K, Engel, R, Ereditato, A, Feofilov, GA, Fodor, Z, Fulop, A, Gaździcki, M, Golubeva, M, Grebieszkow, K, Grzeszczuk, A, Guber, F, Haesler, A, Hasegawa, T, Hierholzer, M, Idczak, R, Igolkin, S, Ivashkin, A, Joković, D, Kadija, K, Kapoyannis, A, Kaptur, E, Kiełczewska, D, Kirejczyk, M, Kisiel, J, Kiss, T, Kleinfelder, S, Kobayashi, T, Kolesnikov, VI, Kolev, D, Kondratiev, VP, Korzenev, A, Kovesarki, P, Kowalski, S, Krasnoperov, A, Kurepin, A, Larsen, D, László, A, Lyubushkin, VV, Maćkowiak-Pawłowska, M, Majka, Z, Maksiak, B, Malakhov, AI, Manić, D, Marcinek, A, Marin, V, Marton, K, Mathes, H-J, Matulewicz, T, Matveev, V, Melkumov, GL, Mrówczyński, St, Murphy, S, Nakadaira, T, Nirkko, M, Nishikawa, K, Palczewski, T, Palla, G, Panagiotou, AD, Paul, T, Pistillo, C, Peryt, W, Petukhov, O, Płaneta, R, Pluta, J, Popov, BA, Posiadała, M, Puławski, S, Puzović, J, Rauch, W, Ravonel, M, Redij, A, Renfordt, R, Robert, A, Röhrich, D, Rondio, E, and Roth, M

Subjects
hep-ex, nucl-ex, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics, Nuclear & Particles Physics
Abstract

We present experimental results on inclusive spectra and mean multiplicitiesof negatively charged pions produced in inelastic p+p interactions at incidentprojectile momenta of 20, 31, 40, 80 and 158 GeV/c ($\sqrt{s} = $ 6.3, 7.7,8.8, 12.3 and 17.3 GeV, respectively). The measurements were performed usingthe large acceptance NA61/SHINE hadron spectrometer at the CERN Super ProtonSynchrotron. Two-dimensional spectra are determined in terms of rapidity and transversemomentum. Their properties such as the width of rapidity distributions and theinverse slope parameter of transverse mass spectra are extracted and theircollision energy dependences are presented. The results on inelastic p+pinteractions are compared with the corresponding data on central Pb+Pbcollisions measured by the NA49 experiment at the CERN SPS. The results presented in this paper are part of the NA61/SHINE ion programdevoted to the study of the properties of the onset of deconfinement and searchfor the critical point of strongly interacting matter. They are required forinterpretation of results on nucleus-nucleus and proton-nucleus collisions.

Published
2014

23. Measurements of production properties of K S 0 mesons and Λ hyperons in proton-carbon interactions at 31 GeV/ c

Author

Abgrall, N, Aduszkiewicz, A, Ali, Y, Anticic, T, Antoniou, N, Argyriades, J, Baatar, B, Blondel, A, Blumer, J, Bogomilov, M, Bravar, A, Brooks, W, Brzychczyk, J, Bunyatov, SA, Busygina, O, Christakoglou, P, Czopowicz, T, Davis, N, Debieux, S, Dembinski, H, Diakonos, F, Di Luise, S, Dominik, W, Drozhzhova, T, Dumarchez, J, Dynowski, K, Engel, R, Ereditato, A, Esposito, L, Feofilov, GA, Fodor, Z, Fulop, A, Gaådzicki, M, Golubeva, M, Grebieszkow, K, Grzeszczuk, A, Guber, F, Hakobyan, H, Haesler, A, Hasegawa, T, Hierholzer, M, Idczak, R, Igolkin, S, Ivanov, Y, Ivashkin, A, Jokovic, D, Kadija, K, Kapoyannis, A, Kaptur, E, Kielczewska, D, Kikola, D, Kirejczyk, M, Kisiel, J, Kiss, T, Kleinfelder, S, Kobayashi, T, Kolesnikov, VI, Kolev, D, Kondratiev, VP, Korzenev, A, Kovesarki, P, Kowalski, S, Krasnoperov, A, Kuleshov, S, Kurepin, A, Larsen, D, Laszlo, A, Lyubushkin, VV, Mackowiak-Pawlowska, M, Majka, Z, Maksiak, B, Malakhov, AI, Maletic, D, Manic, D, Marchionni, A, Marcinek, A, Marin, V, Marton, K, Mathes, HJ, Matulewicz, T, Matveev, V, Melkumov, GL, Mrówczyński, S, Murphy, S, Nakadaira, T, Nirkko, M, Nishikawa, K, Palczewski, T, Palla, G, Panagiotou, AD, Paul, T, Peryt, W, Pistillo, C, Redij, A, Petukhov, O, Planeta, R, Pluta, J, Popov, BA, Posiadała, M, and Puławski, S

Subjects
physics.acc-ph, nucl-ex, Nuclear & Particles Physics, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Atomic, Molecular, Nuclear, Particle and Plasma Physics
Abstract

Spectra of KS0 mesons and Λ hyperons were measured in p + C interactions at 31 GeV/c with the large acceptance NA61/SHINE spectrometer at the CERN SPS. The data were collected with an isotropic graphite target with a thickness of 4% of a nuclear interaction length. Interaction cross sections, charged pion spectra, and charged kaon spectra were previously measured using the same data set. Results on KS0 and Λ production in p + C interactions serve as a reference for the understanding of the enhancement of strangeness production in nucleus-nucleus collisions. Moreover, they provide important input for the improvement of neutrino flux predictions for the T2K long baseline neutrino oscillation experiment in Japan. Inclusive production cross sections for KS0 and Λ are presented as a function of laboratory momentum in intervals of the laboratory polar angle covering the range from 0 up to 240 mrad. The results are compared with predictions of several hadron production models. The KS0 mean multiplicity in production processes 〈nKS0〉 and the inclusive cross section for KS0 production σKS0 were measured and amount to 0.127 ± 0.005 (stat) ± 0.022 (sys) and 29.0 ± 1.6 (stat) ± 5.0 (sys) mb, respectively. © 2014 American Physical Society.

Published
2014

24. Measurements of production properties of KS0 mesons and Λ hyperons in proton-carbon interactions at 31 GeV/c

Author

Abgrall, N, Aduszkiewicz, A, Ali, Y, Anticic, T, Antoniou, N, Argyriades, J, Baatar, B, Blondel, A, Blumer, J, Bogomilov, M, Bravar, A, Brooks, W, Brzychczyk, J, Bunyatov, SA, Busygina, O, Christakoglou, P, Czopowicz, T, Davis, N, Debieux, S, Dembinski, H, Diakonos, F, Di Luise, S, Dominik, W, Drozhzhova, T, Dumarchez, J, Dynowski, K, Engel, R, Ereditato, A, Esposito, L, Feofilov, GA, Fodor, Z, Fulop, A, Gaździcki, M, Golubeva, M, Grebieszkow, K, Grzeszczuk, A, Guber, F, Hakobyan, H, Haesler, A, Hasegawa, T, Hierholzer, M, Idczak, R, Igolkin, S, Ivanov, Y, Ivashkin, A, Jokovic, D, Kadija, K, Kapoyannis, A, Kaptur, E, Kielczewska, D, Kikola, D, Kirejczyk, M, Kisiel, J, Kiss, T, Kleinfelder, S, Kobayashi, T, Kolesnikov, VI, Kolev, D, Kondratiev, VP, Korzenev, A, Kovesarki, P, Kowalski, S, Krasnoperov, A, Kuleshov, S, Kurepin, A, Larsen, D, Laszlo, A, Lyubushkin, VV, Mackowiak-Pawlowska, M, Majka, Z, Maksiak, B, Malakhov, AI, Maletic, D, Manic, D, Marchionni, A, Marcinek, A, Marin, V, Marton, K, Mathes, H-J, Matulewicz, T, Matveev, V, Melkumov, GL, Mrówczyński, St, Murphy, S, Nakadaira, T, Nirkko, M, Nishikawa, K, Palczewski, T, Palla, G, Panagiotou, AD, Paul, T, Peryt, W, Pistillo, C, Redij, A, Petukhov, O, Planeta, R, Pluta, J, Popov, BA, Posiadała, M, and Puławski, S

Subjects
physics.acc-ph, nucl-ex, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Nuclear & Particles Physics
Abstract

Spectra of KS0 mesons and Λ hyperons were measured in p + C interactions at 31 GeV/c with the large acceptance NA61/SHINE spectrometer at the CERN SPS. The data were collected with an isotropic graphite target with a thickness of 4% of a nuclear interaction length. Interaction cross sections, charged pion spectra, and charged kaon spectra were previously measured using the same data set. Results on KS0 and Λ production in p + C interactions serve as a reference for the understanding of the enhancement of strangeness production in nucleus-nucleus collisions. Moreover, they provide important input for the improvement of neutrino flux predictions for the T2K long baseline neutrino oscillation experiment in Japan. Inclusive production cross sections for KS0 and Λ are presented as a function of laboratory momentum in intervals of the laboratory polar angle covering the range from 0 up to 240 mrad. The results are compared with predictions of several hadron production models. The KS0 mean multiplicity in production processes 〈nKS0〉 and the inclusive cross section for KS0 production σKS0 were measured and amount to 0.127 ± 0.005 (stat) ± 0.022 (sys) and 29.0 ± 1.6 (stat) ± 5.0 (sys) mb, respectively. © 2014 American Physical Society.

Published
2014

25. Energy dependence of phi meson production in central Pb+Pb collisions at sqrt(s_nn) = 6 to 17 GeV

Author

Alt, C., Anticic, T., Baatar, B., Barna, D., Bartke, J., Betev, L., Bialkowska, H., Blume, C., Boimska, B., Botje, M., Bracinik, J., Bramm, R., Buncic, P., Cerny, V., Christakoglou, P., Chung, P., Chvala, O., Cramer, J. G., Csato, P., Dinkelaker, P., Eckardt, V., Flierl, D., Fodor, Z., Foka, P., Friese, V., Gal, J., Gazdzicki, M., Genchev, V., Georgopoulos, G., Galadysz, E., Grebieszkow, K., Hegyi, S., Hoehne, C., Kadija, K., Karev, A., Kikola, D., Kliemant, M., Kniege, S., Kolesnikov, V. I., Kollegger, T., Kornas, E., Korus, R., Kowalski, M., Kraus, I., Kreps, M., Kresan, D., Laszlo, A., Lacey, R., van Leeuwen, M., Levai, P., Litov, L., Lungwitz, B., Makariev, M., Malakhov, A. I., Mateev, M., Melkumov, G. L., Mischke, A., Mitrovski, M., Molnar, J., Mrowczynski, St., Nicolic, V., Palla, G., Panagiotou, A. D., Panayotov, D., Petridis, A., Peryt, W., Pikna, M., Pluta, J., Prindle, D., Puehlhofer, F., Renfordt, R., Roland, C., Roland, G., Rybczynski, M., Rybicki, A., Sandoval, A., Schmitz, N., Schuster, T., Seyboth, P., Sikler, F., Sitar, B., Skrzypczak, E., Slodkowski, M., Stefanek, G., Stock, R., Strabel, C., Stroebele, H., Susa, T., Szentpetery, I., Sziklai, J., Szuba, M., Szymanski, P., Trubnikov, V., Varga, D., Vassiliou, M., Veres, G. I., Vesztergombi, G., Vranic, D., Wetzler, A., Walodarczyk, Z., Yoo, I. K., and Zimanyi, J.

Subjects
Nuclear Experiment
Abstract

Phi meson production is studied by the NA49 Collaboration in central Pb+Pb collisions at 20A, 30A, 40A, 80A and 158A GeV beam energy. The data are compared with measurements at lower and higher energies and to microscopic and thermal models. The energy dependence of yields and spectral distributions is compatible with the assumption that partonic degrees of freedom set in at low SPS energies., Comment: 18 pages, 12 figures, 6 tables

Published
2008
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26. Event-by-event transverse momentum fluctuations in nuclear collisions at CERN SPS

Author

Grebieszkow, K., Alt, C., Anticic, T., Baatar, B., Barna, D., Bartke, J., Betev, L., Białkowska, H., Blume, C., Boimska, B., Botje, M., Bracinik, J., Bramm, R., Bunčić, P., Cerny, V., Christakoglou, P., Chung, P., Chvala, O., Cramer, J. G., Csató, P., Dinkelaker, P., Eckardt, V., Flierl, D., Fodor, Z., Foka, P., Friese, V., Gál, J., Gaździcki, M., Genchev, V., Georgopoulos, G., Gładysz, E., Hegyi, S., Höhne, C., Kadija, K., Karev, A., Kikola, D., Kliemant, M., Kniege, S., Kolesnikov, V. I., Kornas, E., Korus, R., Kowalski, M., Kraus, I., Kreps, M., Laszlo, A., Lacey, R., van Leeuwen, M., Lévai, P., Litov, L., Lungwitz, B., Makariev, M., Malakhov, A. I., Mateev, M., Melkumov, G. L., Mischke, A., Mitrovski, M., Molnár, J., Mrówczyński, St., Nicolic, V., Pálla, G., Panagiotou, A. D., Panayotov, D., Petridis, A., Peryt, W., Pikna, M., Pluta, J., Prindle, D., Pühlhofer, F., Renfordt, R., Roland, C., Roland, G., Rybczyński, M., Rybicki, A., Sandoval, A., Schmitz, N., Schuster, T., Seyboth, P., Siklér, F., Sitar, B., Skrzypczak, E., Slodkowski, M., Stefanek, G., Stock, R., Strabel, C., Ströbele, H., Susa, T., Szentpétery, I., Sziklai, J., Szuba, M., Szymanski, P., Trubnikov, V., Varga, D., Vassiliou, M., Veres, G. I., Vesztergombi, G., Vranić, D., Wetzler, A., Włodarczyk, Z., Wojtaszek, A., Yoo, I. K., and Zimányi, J.

Subjects
Nuclear Experiment
Abstract

The latest NA49 results on event-by-event transverse momentum fluctuations are presented for central Pb+Pb interactions over the whole SPS energy range (20A - 158A GeV). Two different methods are applied: evaluating the $\Phi_{p_{T}}$ fluctuation measure and studying two-particle transverse momentum correlations. The obtained results are compared to predictions of the UrQMD model. The results on the energy dependence are compared to the NA49 data on the system size dependence. The NA61 (SHINE, NA49-future) strategy of searching of the QCD critical end-point is also discussed., Comment: proceedings article from CPOD07 (figure 7 - updated, reference 2 - modified)

Published
2007

27. Quantum and semiclassical study of magnetic anti-dots

Author

Kocsis, B., Palla, G., and Cserti, J.

Subjects
Condensed Matter - Mesoscale and Nanoscale Physics
Abstract

We study the energy level structure of two-dimensional charged particles in inhomogeneous magnetic fields. In particular, for magnetic anti-dots the magnetic field is zero inside the dot and constant outside. Such a device can be fabricated with present-day technology. We present detailed semiclassical studies of such magnetic anti-dot systems and provide a comparison with exact quantum calculations. In the semiclassical approach we apply the Berry-Tabor formula for the density of states and the Borh-Sommerfeld quantization rules. In both cases we found good agreement with the exact spectrum in the weak magnetic field limit. The energy spectrum for a given missing flux quantum is classified in six possible classes of orbits and summarized in a so-called phase diagram. We also investigate the current flow patterns of different quantum states and show the clear correspondence with classical trajectories., Comment: 14 pages, 13 figures

Published
2004
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28. Equilibrium statistical mechanics of network structures

Author

Farkas, I., Derenyi, I., Palla, G., and Vicsek, T.

Subjects
Condensed Matter - Statistical Mechanics
Abstract

In this article we give an in depth overview of the recent advances in the field of equilibrium networks. After outlining this topic, we provide a novel way of defining equilibrium graph (network) ensembles. We illustrate this concept on the classical random graph model and then survey a large variety of recently studied network models. Next, we analyze the structural properties of the graphs in these ensembles in terms of both local and global characteristics, such as degrees, degree-degree correlations, component sizes, and spectral properties. We conclude with topological phase transitions and show examples for both continuous and discontinuous transitions., Comment: 25 pages, 10 figures. Lecture Notes in Physics: "Networks: structure, dynamics, and function", ed by E. Ben-Naim, H. Frauenfelder, and Z. Toroczkai Springer, in press (2004)

Published
2004
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29. Ring--Shaped Andreev Billiards in Quantizing Magnetic Fields

Author

Cserti, J., Polinák, P., Palla, G., Zülicke, U., and Lambert, C. J.

Subjects
Condensed Matter - Mesoscale and Nanoscale Physics, Condensed Matter - Disordered Systems and Neural Networks, Condensed Matter - Superconductivity
Abstract

We present a detailed semiclassical study of a clean disk--shaped insulator--normal-metal--superconductor hybrid system in a magnetic field. It is based on an exact secular equation that we derived within the microscopic Bogoliubov--de Gennes (BdG) formalism. Results obtained from a classification of electron and hole orbits are in excellent agreement with those from an exact numerical diagonalization of the BdG equation. Our analysis opens up new possibilities for determining thermodynamic properties of mesoscopic hybrid systems., Comment: 5 pages, 8 figures

Published
2003
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30. Diffraction in the semiclassical description of mesoscopic devices

Author

Vattay, G., Cserti, J., Palla, G., and Szálka, G.

Subjects
Condensed Matter - Mesoscale and Nanoscale Physics, Nonlinear Sciences - Chaotic Dynamics
Abstract

In pseudo integrable systems diffractive scattering caused by wedges and impurities can be described within the framework of Geometric Theory of Diffraction (GDT) in a way similar to the one used in the Periodic Orbit Theory of Diffraction (POTD). We derive formulas expressing the reflection and transition matrix elements for one and many diffractive points and apply it for impurity and wedge diffraction. Diffraction can cause backscattering in situations, where usual semiclassical backscattering is absent causing an erodation of ideal conductance steps. The length of diffractive periodic orbits and diffractive loops can be detected in the power spectrum of the reflection matrix elements. The tail of the power spectrum shows $\sim 1/l^{1/2}$ decay due to impurity scattering and $\sim 1/l^{3/2}$ decay due to wedge scattering. We think this is a universal sign of the presence of diffractive scattering in pseudo integrable waveguides., Comment: 18 pages, Latex , eps

Published
1997
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31. GRaNIE and GRaNPA: inference and evaluation of enhancer-mediated gene regulatory networks

Author

Kamal, A., Arnold, C., Claringbould, A., Moussa, R., Servaas, N.H., Kholmatov, M., Daga, N., Nogina, D., Mueller-Dott, S., Reyes-Palomares, A., Palla, G., Sigalova, O., Bunina, D., Pabst, C., and Zaugg, J.B.

Subjects
Cardiovascular and Metabolic Diseases
Abstract

Enhancers play a vital role in gene regulation and are critical in mediating the impact of noncoding genetic variants associated with complex traits. Enhancer activity is a cell-type-specific process regulated by transcription factors (TFs), epigenetic mechanisms and genetic variants. Despite the strong mechanistic link between TFs and enhancers, we currently lack a framework for jointly analysing them in cell-type-specific gene regulatory networks (GRN). Equally important, we lack an unbiased way of assessing the biological significance of inferred GRNs since no complete ground truth exists. To address these gaps, we present GRaNIE (Gene Regulatory Network Inference including Enhancers) and GRaNPA (Gene Regulatory Network Performance Analysis). GRaNIE (https://git.embl.de/grp-zaugg/GR aNIE) builds enhancer-mediated GRNs based on covariation of chromatin accessibility and RNA-seq across samples (e.g. individuals), while GRaNPA (https://git.embl.de/grp-zaugg/GRaNPA) assesses the performance of GRNs for predicting cell-type-specific differential expression. We demonstrate their power by investigating gene regulatory mechanisms underlying the response of macrophages to infection, cancer and common genetic traits including autoimmune diseases. Finally, our methods identify the TF PURA as a putative regulator of pro-inflammatory macrophage polarisation.

Published
2023

34. Production of phi-mesons in p+p, p+Pb and central Pb+Pb collisions at Ebeam = 158 A GeV

Author

Afanasiev, S.V., Anticic, T., Bachler, J., Barna, D., Barnby, L.S., Bartke, J., Barton, R.A., Betev, L., Bialkowska, H., Billmeier, A., Blume, C., Blyth, C.O., Boimska, B., Bracinik, J., Brady, F.P., Brun, R., Buncic, P., Carr, L., Cebra, D., Cooper, G.E., Cramer, J.G., Csato, P., Eckardt, V., Eckhardt, F., Ferenc, D., Fischer, H.G., Fodor, Z., Foka, P., Freund, P., Friese, V., Ftacnik, J., Gal, J., Ganz, R., Gazdzicki, M., Gladysz, E., Grebieszkow, J., Harris, J.W., Hegyi, S., Hlinka, V., Hohne, C., Igo, G., Ivanov, M., Jacobs, P., Janik, R., Jones, P.G., Kadija, K., Kolesnikov, V.I., Kowalski, M., Lasiuk, B., Levai, P., Malakhov, A.I., Margetis, S., Markert, C., Mayes, B.W., Melkumov, G.L., Mischke, A., Molnar, J., Nelson, J.M., Odyniec, G., Oldenburg, M.D., Palla, G., Panagiotou, A.D., Petridis, A., Pikna, M., Pinsky, L., Poskanzer, A.M., Prindle, D.J., Puhlhofer, F., Reid, J.G., Renfordt, R., Retyk, W., Ritter, H.G., Rohrich, D., Roland, C., Roland, G., Rybicki, A., Sammer, T., Sandoval, A., Sann, H., Semenov, A.Yu., Schafer, E., Schmitz, N., Seyboth, P., Sikler, F., Sitar, B., Skrzypczak, E., Snellings, R., Squier, G.T.A., Stock, R., Strmen, P., Strobele, H., Susa, T., Szarka, I., Szentpetery, I., Sziklai, J., Toy, M., Trainor, T.A., Trentalange, S., Ullrich, T., and Varga, D.

Published
2000

35. Centrality Dependence of Directed and Elliptic Flow at the SPS

Author

Poskanzer, Arthur M., Voloshin, Sergei A., NA49 Collaboration, Bachler, J., Barna, D., Barnby, L.S., Bartke, J., Barton, R.A., Betev, L., Bialkowska, H., Billmeier, A., Blume, C., Blyth, C.O., Boimska, B., Bracinik, J., Brady, F.P., Brockmann, R., Brun, R., Buncic, P., Carr, L., Cebra, D., Cooper, G.E., Cramer, J.G., Csato, P., Eckardt, V., Eckhardt, F., Ferenc, D., Fischer, H.G., Fodor, Z., Foka, P., Freund, P., Friese, V., Ftacnik, J., Gal, J., Ganz, R., Gazdzicki, M., Gladysz, E., Grebieszkow, J., Harris, J.W., Hegyi, S., Hlinka, V., Hohne, C., Igo, G., Ivanov, M., Jacobs, P., Janik, R., Jones, P.G., Kadija, K., Kolesnikov, V.I., Kowalski, M., Lasiuk, B., Levai, P., Malakhov, A.I., Margetis, S., Markert, C., Mayes, B.W., Melkumov, G.L., Molnar, J., Nelson, J.M., Odyniec, G., Oldenburg, M.D., Palla, G., Panagiotou, A.D., Petridis, A., Pikna, M., Pinsky, L., Poskanzer, A.M., Prindle, D.J., Puhlhofer, F., Reid, J.G., Renfordt, R., Retyk, W., Ritter, H.G., Rohrich, D., Roland, C., Roland, G., Rybicki, A., Sammer, T., Sandoval, A., Sann, H., Semenov, A.Yu., Schafer, E., Schmitz, N., Seyboth, P., Sikler, F., Sitar, B., Skrzypczak, E., Snellings, R., Squier, G.T.A., Stock, R., Strmen, P., Stroebele, H., Susa, T., Szarka, I., Szentpetery, I., Sziklai, J., Toy, M., Trainor, T.A., Trentalange, S., and Ullrich, T.

Subjects
relativistic SPS NA49 flow centrality
Abstract

New data with a minimum bias trigger for 158 GeV/nucleon Pb + Pb have been analyzed. Directed and elliptic flow as a function of rapidity of the particles and centrality of the collision are presented. The centrality dependence of the ratio of elliptic flow to the initial space elliptic anisotropy is compared to models.

Published
1999

36. Hadronic expansion dynamics in central Pb+Pb collisions at 158 GeV per nucleon

Author

Appelshäuser, H, Bächler, J, Bailey, SJ, Barnby, LS, Bartke, J, Barton, RA, Białkowska, H, Billmeier, A, Blyth, CO, Bock, R, Bormann, C, Brady, FP, Brockmann, R, Brun, R, Bunčić, P, Caines, HL, Cebra, D, Cooper, GE, Cramer, JG, Csato, P, Dunn, J, Eckardt, V, Eckhardt, F, Ferguson, MI, Ferenc, D, Fischer, HG, Flierl, D, Fodor, Z, Foka, P, Freund, P, Friese, V, Fuchs, M, Gabler, F, Gal, J, Gaździcki, M, Gladysz, E, Grebieszkow, J, Günther, J, Harris, JW, Hegyi, S, Henkel, T, Hill, LA, Huang, I, Hümmler, H, Igo, G, Irmscher, D, Jacobs, P, Jones, PG, Kadija, K, Kolesnikov, VI, Kowalski, M, Lasiuk, B, Lévai, P, Malakhov, AI, Margetis, S, Markert, C, Melkumov, GL, Mock, A, Molnár, J, Nelson, JM, Oldenburg, M, Odyniec, G, Palla, G, Panagiotou, AD, Petridis, A, Piper, A, Porter, RJ, Poskanzer, AM, Poziombka, S, Prindle, DJ, Pühlhofer, F, Rauch, W, Reid, JG, Renfordt, R, Retyk, W, Ritter, HG, Röhrich, D, Roland, C, Roland, G, Rudolph, H, Rybicki, A, Sandoval, A, Sann, H, Semenov, AY, Schäfer, E, Schmischke, D, Schmitz, N, Schönfelder, S, Seyboth, P, Seyerlein, J, Sikler, F, Skrzypczak, E, Squier, GTA, Stock, R, Ströbele, H, Struck, C, Szentpetery, I, Sziklai, J, Toy, M, and Trainor, TA

Subjects
Nuclear & Particles Physics, Quantum Physics, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Atomic, Molecular, Nuclear, Particle and Plasma Physics
Abstract

Two-particle correlation functions of negative hadrons over wide phase space, and transverse mass spectra of negative hadrons and deuterons near mid-rapidity have been measured in central Pb+Pb collisions at 158 GeV per nucleon by the NA49 experiment at the CERN SPS. A novel Coulomb correction procedure for the negative two-particle correlations is employed making use of the measured oppositely charged particle correlation. Within an expanding source scenario these results are used to extract the dynamic characteristics of the hadronic source, resolving the ambiguities between the temperature and transverse expansion velocity of the source, that are unavoidable when single and two particle spectra are analysed separately. The source shape, the total duration of the source expansion, the duration of particle emission, the freeze-out temperature and the longitudinal and transverse expansion velocities are deduced.

Published
1998

37. Perimenopause, body fat, metabolism and menopausal symptoms in relation to serum markers of adiposity, inflammation and digestive metabolism

Author

Palla, G., Ramírez-Morán, C., Montt-Guevara, M. M., Salazar-Pousada, D., Shortrede, J., Simoncini, T., Grijalva-Grijalva, I., Pérez-López, F. R., and Chedraui, P.

Abstract

Background: Perimenopausal women gain weight that may alter inflammatory status, endocrine equilibrium, and the intensity of vasomotor symptoms. Objective: To measure serum levels of markers related to adiposity, inflammation/angiogenesis and digestive metabolism and correlate them with body mass index (BMI), waist-to-hip ratio (WHR), metabolic parameters and menopausal symptoms (assessed with the 10-item Cervantes Scale [CS-10]). Methods: Serum of perimenopausal women (n = 24), STRAW stages-2 and -1, was analyzed using the Bio-Plex 200 System technology to assess 30 proposed analytes. The MetS was defined by the American Heart Association criteria and women were divided as: normal BMI (NBMI), excessive BMI (EBMI), and EBMI with MetS (EBMI–MetS). Results: Weight, BMI, abdominal circumference, WHR, systolic blood pressure, glucose and triglyceride levels were significantly higher and high-density lipoprotein cholesterol (HDL-C) was lower in EBMI-MetS women compared to NBMI ones. Insulin, C-peptide, resistin, adipsin, GIP, leptin, IL-6, FGF21 and PAI-1 levels were significantly higher and ghrelin and IGFBP-1 lower in EBMI–MetS women as compared to NBMI ones. Spearman’s correlation of pooled data showed a significant positive correlation between abdominal perimeter and WHR and C-peptide, insulin, adipsin, resistin, leptin, PAI-1 and FGF21 and a negative correlation with IGFBP-1 levels. Total CS-10 scores and hot flush intensity did not differ between studied groups, yet positively correlated with anthropometric values but not with studied analytes. Conclusion: Perimenopausal women with EBMI and the MetS showed an altered metabolic profile, but no differences in menopausal symptoms which also did not correlate with changes in studied biomarkers.

Published
2024
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38. First Results from NA49 on Pb+Pb Collisions at 158 GeV/Nucleon

Author

Margetis, S., Alber, T., Appelshauser, H., Bachler, J., Bartke, J., Bialkowska, H., Bieser, F., Bloomer, M.A., Blyth, C.O., Bock, R., Bormann, C., Brady, F.P., Brockmann, R., Buncic, P., Caines, H.L., Cebra, D., Chan, P., Cooper, G., Cramer, J.G., Cramer, P.B., Csato, P., Derado, I., Dunn, J., Eckardt, V., Eckhardt, F., Euler, S., Ferguson, M.I., Fischer, H.G., Fodor, Z., Foka, P., Freund, P., Fuchs, M., Gal, J., Gazdzicki, M., Gladysz, E., Grebieszkow, J., Gunther, J., Harris, J.W., Heck, W., Hegyi, S., Hill, L.A., Huang, I., Howe, M.A., Igo, G., Irmscher, D., Jacobs, P., Jones, P.G., Kadija, K., Kecskemeti, J., Kosiec, J., Kowalski, M., Kuhmichel, A., Lasiuk, B., Mitchell, J.W., Mock, A., Nelson, J.M., Odyniec, G.J., Palinkas, J., Palla, G., Panagiotou, A.D., Petridis, A., Piper, A., Poskanzer, A.M., Prindle, D.J., Puhlhofer, F., Rauch, W., Renfordt, R., Retyk, W., Ritter, Hans G., Rohrich, D., Rudolph, H., Runge, K., Sandoval, A., Sann, H., Schaefer, E., Schmitz, N., Schonfelder, S., Seyboth, P., Seyerlein, J., Sikler, F., Skrzypczak, E., Stefansky, P., Stock, R., Stroebele, H., Szentpetery, I., Sziklai, J., Toy, M., Trainor, T.A., Trentalange, S., Vassiliou, M., Vesztergombi, G., Vranic, D., Wenig, S., Whitten, C., Wienold, T., Wood, L., Zimanyi, J., Zhu, X.-Z., and Zybert, R.

Published
1995

39. Transverse Energy Production in {sup 208}Pb+Pb Collisions at 158 GeV per Nucleon

Author

Margetis, S., Alber, T., Appelshauser, H., Bachler, J., Bartke, J., Bialkowska, H., Bieser, F., Bloomer, M.A., Blyth, C.O., Bock, R., Bormann, C., Brady, F.P., Brockmann, R., Buncic, P., Caines, H.L., Cebra, D., Chan, P., Cooper, G.E., Cramer, J.G., Cramer, P.B., Csato, P., Derado, I., Dunn, J., Eckardt, V., Eckhardt, F., Euler, S., Ferguson, M.I., Fischer, H.G., Fodor, Z., Foka, P., Freund, P., Fuchs, M., Gal, J., Gasdzicki, M., Gladysz, E., Grebieszkow, J., Gunther, J., Harris, J.W., Heck, W., Hegyi, S., Hill, L.A., Huang, I., Howe, M.A., Igo, G., Irmscher, D., Jacobs, P., Jones, P.G., Kadija, K., Kecskemeti, J., Kowalski, M., Kuhmichel, A., Lsdiuk, B., Mitchell, J.W., Mock, A., Nelson, J.M., Odyniec, G.J., Palinkas, J., Palla, G., Panagiotou, A.D., Petridis, A., Piper, A., Poskanzer, A.M., Prindle, D.J., Puhlhofer, F., Rauch, W., Renfordt, R., Retyk, W., Ritter, Hans G., Rohrich, D., Rudolph, H., Runge, K., Sandoval, A., Sann, H., Schafer, E., Schmitz, N., Schonfelder, S., Seyboth, P., Seyerlein, J., Sikler, F., Skrzypczak, E., Stock, R., Stroebele, H., Szentpetery, I., Sziklai, J., Toy, M., Trainor, T.A., Trentalange, S., Vassiliou, M., Vesztergombi, G., Vranic, D., Wenig, S., Whitten, C., Wienold, T., Wood, L., Zimanyi, J., Zhu, X.-Z., and Zybert, R.

Published
1994

40. Recent Results from the NA49 Experiment

Author

Blume, C., Botje, M., van Leeuwen, M., Christakoglou, P., Georgopoulos, G., Panagiotou, A. D., Vassiliou, M., Petridis, A., Pikna, M., Cerny, V., Bracinik, J., Kreps, M., Sitar, B., Barna, D., Csato, P., Fodor, Z., Gal, J., Hegyi, S., Levai, P., Molnar, J., Palla, G., Siklér, F., Varga, D., Szentpetery, I., Veres, G. I., Zimanyi, J., Vesztergombi, G., Sziklai, J., Roland, C., Roland, G., Bartke, J., Gladysz, E., Kornas, E., Kowalski, M., Rybicki, A., Kraus, I., Foka, P., Friese, V., Markert, C., Mischke, A., Sandoval, A., Sann, H., Vranic, D., Baatar, B., Malakhov, A. I., Kolesnikov, V. I., Melkumov, G. L., Kollegger, T., Meurer, C., Betev, L., Billmeier, A., Bramm, R., Dinkelaker, P., Flierl, D., Gazdzicki, M., Mitrovski, M., Stock, R., Ströbele, H., Zaranek, J., Wetzler, A., Renfordt, R., Buncic, P., Brun, R., Fischer, H. G., Wenig, S., Mayes, B. W., Pinsky, L., Korus, R., Mrowczynski, St., Rybczynski, M., Stefanek, G., Wlodarczyk, Z., Behler, M., Höhne, C., Pühlhofer, F., Eckardt, V., Filip, P., Freund, P., Karev, A., Schmitz, N., Seyboth, P., Chvala, O., Yoo, I. K., Cramer, J. G., Reid, J. G., Trainor, T. A., Darmenov, N., Dimitrov, A., Litov, L., Makariev, M., Mateev, M., Panayotov, D., Bialkowska, H., Boimska, B., Perl, K., Retyk, W., Skrzypczak, E., Susa, T., Anticic, T., Kadija, K., Greiner, Walter, editor, Itkis, Mikhail G., editor, Reinhardt, Joachim, editor, and Güçlü, Mehmet Cem, editor

Published
2004
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43. Measurement of negatively charged pion spectra in inelastic p+p interactions at p lab = 20, 31, 40, 80 and 158 GeV/c: NA61/SHINE Collaboration

Author

Abgrall, N., Aduszkiewicz, A., Ali, Y., Anticic, T., Antoniou, N., Baatar, B., Bay, F., Blondel, A., Blumer, J., Bogomilov, M., Bravar, A., Brzychczyk, J., Bunyatov, S. A., Busygina, O., Christakoglou, P., Czopowicz, T., Davis, N., Debieux, S., Dembinski, H., Diakonos, F., Luise, S. Di, Dominik, W., Drozhzhova, T., Dumarchez, J., Dynowski, K., Engel, R., Ereditato, A., Feofilov, G. A., Fodor, Z., Fulop, A., Gaździcki, M., Golubeva, M., Grebieszkow, K., Grzeszczuk, A., Guber, F., Haesler, A., Hasegawa, T., Hierholzer, M., Idczak, R., Igolkin, S., Ivashkin, A., Joković, D., Kadija, K., Kapoyannis, A., Kaptur, E., Kiełczewska, D., Kirejczyk, M., Kisiel, J., Kiss, T., Kleinfelder, S., Kobayashi, T., Kolesnikov, V. I., Kolev, D., Kondratiev, V. P., Korzenev, A., Kovesarki, P., Kowalski, S., Krasnoperov, A., Kurepin, A., Larsen, D., László, A., Lyubushkin, V. V., Maćkowiak-Pawłowska, M., Majka, Z., Maksiak, B., Malakhov, A. I., Manić, D., Marcinek, A., Marin, V., Marton, K., Mathes, H.-J., Matulewicz, T., Matveev, V., Melkumov, G. L., Mrówczyński, St., Murphy, S., Nakadaira, T., Nirkko, M., Nishikawa, K., Palczewski, T., Palla, G., Panagiotou, A. D., Paul, T., Pistillo, C., Peryt, W., Petukhov, O., Płaneta, R., Pluta, J., Popov, B. A., Posiadała, M., Puławski, S., Puzović, J., Rauch, W., Ravonel, M., Redij, A., Renfordt, R., Robert, A., Röhrich, D., Rondio, E., Roth, M., Rubbia, A., Rustamov, A., Rybczyński, M., Sadovsky, A., Sakashita, K., Savić, M., Schmidt, K., Sekiguchi, T., Seyboth, P., Sgalaberna, D., Shibata, M., Sipos, R., Skrzypczak, E., Słodkowski, M., Staszel, P., Stefanek, G., Stepaniak, J., Ströbele, H., Šuša, T., Szuba, M., Tada, M., Tereshchenko, V., Tolyhi, T., Tsenov, R., Turko, L., Ulrich, R., Unger, M., Vassiliou, M., Veberič, D., Vechernin, V. V., Vesztergombi, G., Vinogradov, L., Wilczek, A., Włodarczyk, Z., Wojtaszek-Szwarc, A., Wyszyński, O., Zambelli, L., and Zipper, W.

Published
2014
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46. Search for deconfinement in NA49 at the CERN SPS

Author

Seyboth, Peter, Afanasiev, S. V., Anticic, T., Barna, D., Bartke, J., Barton, R. A., Betev, L., Bialkowska, H., Billmeier, A., Blume, C., Blyth, C. O., Boimska, B., Botje, M., Bracinik, J., Bramm, R., Brun, R., Bunci, P., Cerny, V., Chvala, O., Cramer, J. G., Csato, P., Dinkelaker, P., Eckardt, V., Filip, P., Fischer, H. G., Fodor, Z., Foka, P., Freund, P., Friese, V., Gal, J., Gaździcki, M., Georgopoulos, G., Gladysz, E., Hegyi, S., Hohne, C., Jones, P. G., Kadija, K., Karev, A., Kolesnikov, V. I., Kollegger, T., Kowalski, M., Kraus, I., Kreps, M., van Leeuwen, M., Levai, P., Malakhov, A. I., Markert, C., WMayes, B., Melkumov, G. L., Mischke, A., Molnar, J., Nelson, J. M., Palla, G., Panagiotou, A. D., Perl, K., Petridis, A., Pikna, M., Pinsky, L., Puhlhofer, F., Reid, J. G., Renfordt, R., Retyk, W., Roland, C., Roland, G., Rybicki, A., Sandoval, A., Sann, H., Schmitz, N., Seyboth, Peter, Sikler, F., Sitar, B., Skrzypczak, E., Squier, G. T. A., Stock, R., Strobele, H., Susa, T., Szentpetery, I., Sziklai, J., Trainor, T. A., Varga, D., Vassiliou, M., Veres, G. I., Vesztergombi, G., Vranic, D., Wenig, S., Wetzler, A., KYoo, I., Zaranek, J., and Zimanyi, J.

Published
2003
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