/ hep-ex arXiv:1310.2417

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

Abgrall, N. (Geneva U.) ; Aduszkiewicz, A. (Warsaw U. of Tech.) ; Ali, Y. (Jagiellonian U.) ; Anticic, T. (Boskovic Inst., Zagreb) ; Antoniou, N. (Athens U.) ; Baatar, B. (Dubna, JINR) ; Bay, F. (Zurich, ETH) ; Blondel, A. (Geneva U.) ; Blumer, J. (Karlsruhe, Inst. Technol.) ; Bogomilov, M. (Sofiya U.) ; Bravar, A. (Geneva U.) ; Brzychczyk, J. (Jagiellonian U.) ; Bunyatov, S.A. (Dubna, JINR) ; Busygina, O. (Dubna, JINR) ; Christakoglou, P. (Athens U.) ; Czopowicz, T. (Warsaw U. of Tech.) ; Davis, N. (Athens U.) ; Debieux, S. (Geneva U.) ; Dembinski, H. (Karlsruhe, Inst. Technol.) ; Diakonos, F. (Athens U.) ; Di Luise, S. (Zurich, ETH) ; Dominik, W. (Warsaw U. of Tech.) ; Drozhzhova, T. (St. Petersburg State U.) ; Dumarchez, J. (Paris U., VI-VII) ; Dynowski, K. (Warsaw U. of Tech.) ; Engel, R. (Karlsruhe, Inst. Technol.) ; Ereditato, A. (Bern U.) ; Feofilov, G.A. (St. Petersburg State U.) ; Fodor, Z. (Budapest, RMKI) ; Fulop, A. (Budapest, RMKI) ; Gazdzicki, M. (Jan Kochanowski U.) ; Golubeva, M. (Dubna, JINR) ; Grebieszkow, K. (Warsaw U. of Tech.) ; Grzeszczuk, A. (Silesia U.) ; Guber, F. (Dubna, JINR) ; Haesler, A. (Geneva U.) ; Hasegawa, T. (KEK, Tsukuba) ; Hierholzer, M. (Bern U.) ; Idczak, R. (Wroclaw U.) ; Igolkin, S. (St. Petersburg State U.) ; Ivashkin, A. (Dubna, JINR) ; Jokovic, D. (Belgrade U.) ; Kadija, K. (Boskovic Inst., Zagreb) ; Kapoyannis, A. (Athens U.) ; Katrynska, N. (Wroclaw U.) ; Kaptur, E. (Silesia U.) ; Kirejczyk, M. (Warsaw U. of Tech.) ; Kisiel, J. (Silesia U.) ; Kiss, T. (Budapest, RMKI) ; Kleinfelder, S. (UC, Irvine) ; Kobayashi, T. (KEK, Tsukuba) ; Kolesnikov, V.I. (Dubna, JINR) ; Kolev, D. (Sofiya U.) ; Kondratiev, V.P. (St. Petersburg State U.) ; Korzenev, A. (Geneva U.) ; Kowalski, S. (Silesia U.) ; Krasnoperov, A. (Dubna, JINR) ; Kurepin, A. (Dubna, JINR) ; Larsen, D. (Silesia U.) ; Laszlo, A. (Budapest, RMKI) ; Lyubushkin, V.V. (Dubna, JINR) ; Majka, Z. (Jagiellonian U.) ; Maksiak, B. (Warsaw U. of Tech.) ; Malakhov, A.I. (Dubna, JINR) ; Manic, D. (Belgrade U.) ; Marcinek, A. (Jagiellonian U.) ; Marin, V. (Dubna, JINR) ; Marton, K. (Budapest, RMKI) ; Mathes, H.J. (Karlsruhe, Inst. Technol.) ; Matulewicz, T. (Warsaw U. of Tech.) ; Matveev, V. (Dubna, JINR) ; Melkumov, G.L. (Dubna, JINR) ; Mrowczynski, St. (Jan Kochanowski U.) ; Murphy, S. (Geneva U.) ; Nakadaira, T. (KEK, Tsukuba) ; Nirkko, M. (Bern U.) ; Nishikawa, K. (KEK, Tsukuba) ; Palczewski, T. (NCBJ, Swierk) ; Palla, G. (Budapest, RMKI) ; Panagiotou, A.D. (Athens U.) ; Paul, T. (Nova Gorica U.) ; Pistillo, C. (Bern U.) ; Peryt, W. (Warsaw U. of Tech.) ; Petukhov, O. (Dubna, JINR) ; Pluta, J. (Warsaw U. of Tech.) ; Popov, B.A. (Paris U., VI-VII) ; Puzovic, J. (Belgrade U.) ; Rauch, W. (Fachhochschule Frankfurt) ; Ravonel, M. (Geneva U.) ; Redij, A. (Bern U.) ; Renfordt, R. (Fachhochschule Frankfurt) ; Robert, A. (Paris U., VI-VII) ; Rohrich, D. (Bergen U.) ; Rondio, E. (NCBJ, Swierk) ; Roth, M. (Karlsruhe, Inst. Technol.) ; Rubbia, A. (Zurich, ETH) ; Rustamov, A. (Fachhochschule Frankfurt) ; Rybczynski, M. (Jan Kochanowski U.) ; Sadovsky, A. (Dubna, JINR) ; Sakashita, K. (KEK, Tsukuba) ; Savic, M. (Belgrade U.) ; Schmidt, K. (Silesia U.) ; Sekiguchi, T. (KEK, Tsukuba) ; Seyboth, P. (Jan Kochanowski U.) ; Sgalaberna, D. (Zurich, ETH) ; Shibata, M. (KEK, Tsukuba) ; Sipos, R. (Budapest, RMKI) ; Skrzypczak, E. (Warsaw U. of Tech.) ; Staszel, P. (Jagiellonian U.) ; Stefanek, G. (Jan Kochanowski U.) ; Stepaniak, J. (NCBJ, Swierk) ; Strobele, H. (Fachhochschule Frankfurt) ; Szuba, M. (Karlsruhe, Inst. Technol.) ; Tada, M. (KEK, Tsukuba) ; Tereshchenko, V. (Dubna, JINR) ; Tolyhi, T. (Budapest, RMKI) ; Tsenov, R. (Sofiya U.) ; Turko, L. (Wroclaw U.) ; Ulrich, R. (Karlsruhe, Inst. Technol.) ; Unger, M. (Karlsruhe, Inst. Technol.) ; Vassiliou, M. (Athens U.) ; Vechernin, V.V. (St. Petersburg State U.) ; Vesztergombi, G. (Budapest, RMKI) ; Vinogradov, L. (St. Petersburg State U.) ; Wilczek, A. (Silesia U.) ; Wojtaszek-Szwarc, A. (Jan Kochanowski U.) ; Wyszynski, O. (Jagiellonian U.) ; Zambelli, L. (Paris U., VI-VII) ; Zipper, W. (Silesia U.)

Abstract: Experimental results on inclusive spectra and mean multiplicities of negatively charged pions produced in inelastic p+p interactions at 20, 31, 40, 80 and 158 GeV/c ($\sqrt{s}$ = 6.3, 7.7, 8.8, 12.3 and 17.3 GeV, respectively) are presented. The measurements were performed using the large acceptance NA61/SHINE hadron spectrometer at the CERN Super Proton Synchrotron. These data 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. Two dimensional spectra in transverse momentum and rapidity corrected for experimental biases are given. Their properties such as the width of rapidity distributions and the inverse slope parameter of transverse mass spectra are extracted and their collision energy dependence is 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. Differences and similarities are identified.

Web-Page: http://inspirehep.net/record/1257740/files/pictures_event_visualisation.png; http://inspirehep.net/record/1257740/files/pictures_na61setup_DetectorPaper.png; http://inspirehep.net/record/1257740/files/plots_12E002_pp158_impact.png; http://inspirehep.net/record/1257740/files/plots_12E002_pp20_impact.png; http://inspirehep.net/record/1257740/files/plots_K0s.png; http://inspirehep.net/record/1257740/files/plots_T.png; http://inspirehep.net/record/1257740/files/plots_Ty_scaled.png; http://inspirehep.net/record/1257740/files/plots_beam_divergence.png; http://inspirehep.net/record/1257740/files/plots_bpd3.png; http://inspirehep.net/record/1257740/files/plots_hr_wide.png; http://inspirehep.net/record/1257740/files/plots_kink.png; http://inspirehep.net/record/1257740/files/plots_mean_mt.png; http://inspirehep.net/record/1257740/files/plots_mt.png; http://inspirehep.net/record/1257740/files/plots_mt_na49_divided.png; http://inspirehep.net/record/1257740/files/plots_multiplicity.png; http://inspirehep.net/record/1257740/files/plots_pp158_y_pt_syst_1.png; http://inspirehep.net/record/1257740/files/plots_pp158_y_pt_syst_13.png; http://inspirehep.net/record/1257740/files/plots_pp158_y_pt_syst_5.png; http://inspirehep.net/record/1257740/files/plots_pp20_y_pt_syst_1.png; http://inspirehep.net/record/1257740/files/plots_pp20_y_pt_syst_13.png; http://inspirehep.net/record/1257740/files/plots_pp20_y_pt_syst_5.png; http://inspirehep.net/record/1257740/files/plots_rapidity.png; http://inspirehep.net/record/1257740/files/plots_rapidity_na49_divided.png; http://inspirehep.net/record/1257740/files/plots_rapidity_width.png; http://inspirehep.net/record/1257740/files/plots_reconstruction_efficiency.png; http://inspirehep.net/record/1257740/files/plots_resolution.png; http://inspirehep.net/record/1257740/files/plots_vertex_z.png; http://inspirehep.net/record/1257740/files/plots_vertex_z_MC.png; http://inspirehep.net/record/1257740/files/plots_y158na49.png; http://inspirehep.net/record/1257740/files/plots_y31.png; http://inspirehep.net/record/1257740/files/plots_y_pt_158.png; http://inspirehep.net/record/1257740/files/plots_y_pt_20.png; http://inspirehep.net/record/1257740/files/plots_y_pt_31.png; http://inspirehep.net/record/1257740/files/plots_y_pt_40.png; http://inspirehep.net/record/1257740/files/plots_y_pt_80.png; http://inspirehep.net/record/1257740/files/arXiv:1310.2417.pdf

Note: *Temporary entry*; Numerical results available at: https://edms.cern.ch/document/1314605 Updates in v2: Added P. Kovesarki to the author list, up updated Fig. 1, added URL to Ref. 26

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