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

2010/10/25 by V. A. Abramovsky, Abramovsky, V. A., N. V. Radchenko +1
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #hep-ph

paper · pdf · doi:10.48550/arxiv.1010.5258

Talk presented at the ISMD 2010, Antwerp (Belgium). Some typos are corrected

arxiv created 2010/11/30 · arxiv updated 2010/12/01

Abstract

We have predicted the difference in inclusive cross sections on pseudorapidity in \rm dσ^pp/\rm dη and \rm dσ^pp/\rm dη interactions at √(s)=900~GeV. Their ratio R=(\rm dσ^pp/\rm dη)/(\rm dσ^pp/\rm 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~GeV ((1)/(2πp_⊥)\frac\rm d²σ^pp\rm dη\rm dp_⊥)/((1)/(2πp_⊥)\frac\rm d²σ^pp\rm dη\rm dp_⊥).=R. Experimental 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.

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