KS0 production in p+p interactions measured by NA61/SHINE.

The NA61/SHINE collaboration measured the production of K S 0 in p + p interactions at two beam momenta: 80 and 158 GeV/c. The π + + π − decay of K S 0 (branching ratio of 69.2%) was measured via the invariant mass method. The rapidity and transverse momentum distributions of K S 0 are presented and compared to transport model predictions. The measured mean multiplicities of K S 0 mesons equal to 〈 K S 0 〉 = 0. 1 2 0 ± 0. 0 0 1 (stat.) ± 0. 0 0 5 (sys.) (80 GeV/c) and 〈 K S 0 〉 = 0. 1 6 2 ± 0. 0 0 1 (stat.) ± 0. 0 1 1 (sys.) (158 GeV/c) are compared with the available data in the energy range s N N = 3 –32 GeV. [ABSTRACT FROM AUTHOR]