Comparison of different hadron production models for the study of π±, K±, protons and antiprotons production in proton–carbon interactions at 90 GeV/c

Abstract

In this research paper, comprehensive results on the double differential yield of [Formula: see text] and [Formula: see text] mesons, protons and antiprotons as a function of laboratory momentum in several polar angle ranges from 0–420 mrad for pions, 0–360 mrad for kaons, proton and antiproton are reported. EPOS 1.99, EPOS-LHC and QGSJETII-04 models are used to perform simulations. The predictions of these models at 90 GeV/c are plotted for comparison, which shows that QGSJETII-04 model gives overall higher yield for [Formula: see text] mesons in the polar angle interval of 0–40 mrad but for the [Formula: see text] the yield is higher only up to 20 mrad. For [Formula: see text] mesons after 40 mrad, EPOS-LHC predicts higher yield as compared to EPOS 1.99 and QGSJETII-04 while EPOS-LHC and EPOS 1.99 give similar behavior in these two intervals. However, for [Formula: see text] mesons EPOS-LHC and EPOS 1.99 give similar behavior in these two intervals. For of [Formula: see text] mesons, QGSJETII-04 model gives higher predictions in all cases from 0–300 mrad, while EPOS 1.99 and EPOS-LHC show similar distributions. In case of protons, all models give similar distribution but this is not true for antiproton. All models are in good agreement for p [Formula: see text] 20 GeV/c. EPOS 1.99 produce lower yield compared to the other two models from 60–360 mrad polar angle interval.