Measurements of π$^{+}$ , π$^{−}$ , p , $\bar{p}$ , K$^{+}$ and K$^{−}$ production in 120 GeV / c p + C interactions

This paper presents multiplicity measurements of charged hadrons produced in 120  GeV/c proton-carbon interactions. The measurements were made using data collected at the NA61/SHINE experiment during two different data-taking periods, with increased phase space coverage in the second configuration due to the addition of new subdetectors. Particle identification via dE/dx was employed to obtain double-differential production multiplicities of π+, π−, p, ¯p, K+, and K−. These measurements are presented as a function of laboratory momentum in intervals of laboratory polar angle covering the range from 0 to 450 mrad. They provide crucial inputs for current and future long-baseline neutrino experiments, where they are used to estimate the initial neutrino flux.