Inclusive production of low-momentum charged pions, kaons, and protons at x = 0 at the CERN intersecting storage rings

Abstract

The inclusive production of low-momentum charged pions, kaons, and protons has been measured at x = 0 over the ISR energy range 23 < √ s < 63 GeV. The average increase in the invariant differential cross section is 36 ± 2% for π +, 41 ± 2% for π −, 52 ± 8% for K +, 69 ± 8% for K −, 8 ± 5% for p, and 84 ± for p ̄ . Pions have been measured in the range 0.04 < p T < 0.4 GeV/ c, kaons over 0.1 < p T < 0.3 GeV/ c, and nucleons over 0.1 < p T < 0.5 GeV/ c.