Inclusive cross sections of proton-proton and proton-antiproton scattering

Abstract

We have predicted the difference in inclusive cross sections on pseudorapidity in pp and pp interactions at √ s = 900 GeV. Their ratio R = dσ pp /dη /(dσ pp /dη) > 1 in the whole pseudorapidity range. On the basis of AGK theorem we show that the ratio of inclusive cross sections of pp and pp at √ s = 900 GeV in the region of low transverse momenta p ⊥ up to 2 GeVExperimental measurements by the ATLAS Coll. give value R 1.2 for interval |η| < 2.5. The difference in inclusive cross sections results from presence of additional subprocess in pp -hadrons production from decay of three quark strings, which is absent in pp scattering.