Feynman scaling violation due to baryon number diffusion in rapidity space

TL;DR

This paper investigates how baryon number diffusion in rapidity space causes Feynman scaling violation in high-energy collisions, with predictions relevant for LHC and cosmic ray physics.

Contribution

It introduces a new mechanism linking baryon charge diffusion to Feynman scaling violation in the fragmentation region.

Findings

Predicts decreased baryon multiplicity in the fragmentation region at high energies.

Provides quantitative estimates of Feynman scaling violation at LHC energies.

Highlights implications for cosmic ray physics.

Abstract

A significant asymmetry in baryon/antibaryon yields in the central region of high energy collisions is observed when the initial state has non-zero baryon charge. This asymmetry is connected with the possibility of a baryon charge diffusion in rapidity space. Evidently, such a diffusion should decrease the baryon charge in the fragmentation region leading to the corresponding decrease of the multiplicity of leading baryons. As a result, a new mechanism for Feynman scaling violation in the fragmentation region is obtained. We present the quantitative predictions for the Feynman scaling violation at LHC energies and even at highier energies that can be important for cosmic ray physics.