Measurements of hadron production from p+C interactions at 31 GeV/c with NA61/SHINE detector at the CERN SPS

Preliminary results on KS0 production in p+C interactions at 31 GeV/c using data registered during the 2007 run are shown. In addition, an overview of charged pion and koan results is presented. These results are needed for the high precision determination of background contamination in the neutrino beam of the Tokai to Kamioka (T2K) experiment at J-PARC. Performance of the NA61/SHINE detector is discussed. Inclusive production cross sections for π−, π+, K+, and KS0 as a function of laboratory momentum and polar angle with statistical and systematic errors are shown. The K+ / π+, KS0/K+, and K0/π− ratios are also presented