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HK: Fachverband Physik der Hadronen und Kerne

HK 57: Hadron Structure and Spectroscopy VII

HK 57.5: Talk

Wednesday, March 13, 2024, 18:45–19:00, HBR 62: EG 18

K_S⁰ production in p+p interactions measured by NA61/SHINE — •Marjan Cirkovic — Spasovdanska 6, 11032 Belgrade, Serbia

NA61/SHINE (SPS Heavy Ion and Neutrino Experiment) is a fixed-target experiment at the CERN Super Proton Synchrotron. One of its research projects is the systematic measurement of hadron production in proton+proton, proton+nucleus and nucleus+nucleus interactions. These studies are performed in particular to study the predicted signals of the onset of deconfinement and search for the critical point of strongly interacting matter. For this investigation, a two-dimensional scan in beam momentum (13A -150A GeV/c) and nuclear mass number of colliding nuclei was performed.

K_S⁰ are detected and measured by NA61/SHINE by means of their weak decays into π⁺ + π⁻ with a branching ratio of 69.2%. This contribution reviews recent NA61/SHINE measurements on the production of K_S⁰ in p+p interactions. The rapidity and transverse momentum distributions of K_S⁰ will be presented and compared to transport model predictions. The mean multiplicity of studied K_S⁰ mesons will be compared with the available data in the range √s_NN = 3 - 32 GeV.

Keywords: Neutral kaons; proton+proton interactions; Quark-Gluon Plasma