Experimental evidences of difference in $pp$ and $p\bar{p}$ interactions at high energies

TL;DR

This paper presents experimental evidence that hadron production differs between proton-proton and proton-antiproton collisions at high energies, highlighting additional processes in $par{p}$ interactions that grow with energy and affect cross sections.

Contribution

It provides the first experimental evidence of a process unique to $par{p}$ interactions and quantifies its impact on inclusive cross sections at high energies.

Findings

Hadrons production differs in $par{p}$ and $pp$ interactions.

A process involving three quark strings in $par{p}$ grows with energy as $( ext{ln}\sqrt{s})^2$.

Inclusive cross sections for $par{p}$ exceed those for $pp$ at high energies.

Abstract

Hadrons production is different in $p\bar{p}$ and $pp$ interactions at high energies. There is process of hadrons production from three quark strings in $p\bar{p}$ which is absent in $pp$. This process grows as $(\ln\sqrt{s})^2$ and becomes significant when energy of collision increases. Inclusive cross sections of $p\bar{p}$ interaction exceed inclusive cross sections of $pp$. Theoretical estimation of the ratio of $p\bar{p}$ to $pp$ at energy $\sqrt{s}=900$ GeV gives $R=1.12\pm0.03$. The UA1 data on $p\bar{p}$ transverse momentum distribution are about 1.2 -- 1.3 times higher than the CMS, ATLAS and ALICE data on $pp$ at energy $\sqrt{s}=900$ GeV.