Energy dependence of identified hadron spectra and event-by-event fluctuations in p+p interactions from NA61/SHINE at the CERN SPS

Rybczyński, M. and Abgrall, N. and Aduszkiewicz, A. and Ali, Y. and Anticic, T. and Antoniou, N. and Argyriades, J. and Baatar, B. and Blondel, A. and Blumer, J. and Bogomilov, M. and Bravar, A. and Brooks, W. and Brzychczyk, J. and Bubak, A. and Bunyatov, S. A. and Busygina, O. and Christakoglou, P. and Czopowicz, T. and Davis, N. and Debieux, S. and Dembinski, H. and Diakonos, F. and Di Luise, S. and Dominik, W. and Drozhzhova, T. and Dumarchez, J. and Dynowski, K. and Engel, R. and Ereditato, A. and Fodor, Zoltán and Fülöp, Ágnes and Kiss, Tivadar and László, András and Márton, Krisztina and Pálla, Gabriella and Sipos, Roland and Tölyhi, Tamás and Vesztergombi, György (2013) Energy dependence of identified hadron spectra and event-by-event fluctuations in p+p interactions from NA61/SHINE at the CERN SPS. POS - PROCEEDINGS OF SCIENCE, Confin. ISSN 1824-8039

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Abstract

NA61/SHINE at the CERN SPS is a fixed-target experiment pursuing a rich physics program including measurements for heavy ion, neutrino and cosmic ray physics. The main goal of the ion program is to explore the most interesting T,muB region of the phase diagram of strongly interacting matter. We plan to study the properties of the onset of deconfinement and to search for the signatures of the critical point. The search is performed by varying collision energy (13A158A GeV/c) and system size (p+p, Be+Be, Ar+Ca, Xe+La). Thanks to its large acceptance and excellent particle identification capability NA61/SHINE is well suited for performing high-precision particle production measurements as well as for studying event-by-event fluctuations in p+p, p+nucleus and nucleus+nucleus collisions. Preliminary results on p+p interactions at 20, 31, 40, 80 and 158 GeV/c are presented. They include inclusive spectra of pi+, pi-, K- and protons as a function of transverse momentum/mass and rapidity as well as event-by-event fluctuations of transverse momentum, azimuthal angle and chemical composition. The new NA61 measurements are compared with the corresponding results of NA49 on central Pb+Pb collisions and with predictions of Monte Carlo models. Finally, the future plans of NA61/SHINE are summarised.

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