Feynman scaling violation on baryon spectra in pp collisions at LHC and cosmic ray energies

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 baryon charge diffusion in rapidity space. Such a diffusion should decrease the baryon charge in the fragmentation region and translate into 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. Another numerically more significant reason for the Feynman scaling violation comes from the fact that the average number of cutted Pomerons increases with initial energy. We present the quantitative predictions of the Quark-Gluon String Model (QGSM) for the Feynman scaling violation at LHC energies and at even higher energies that can be important for cosmic ray physics.

21 pages, 11 figures, and 1 table. arXiv admin note: substantial text overlap with arXiv:1107.1615, arXiv:1007.3206

References in corpus (9)

• The Pierre Auger Observatory I: The Cosmic Ray Energy Spectrum and Related Measurements
• Midrapidity Production of Secondaries in pp Collisions at RHIC and LHC Energies in the Quark-Gluon String Model
• Production of Secondaries in High Energy d+Au Collisions
• Production of Strange Secondaries in High Energy Sigma(-)A Collisions
• Baryon charge transfer and production asymmetry between Lambda^0 and antiLambda^0 in hadron interactions
• Pomeron and Odderon Contributions at LHC Energies
• Possible Odderon Effects in Hadron-Nucleon Scattering
• Particle Production in the Central Region at LHC Energies
• Feynman scaling violation due to baryon number diffusion in rapidity space

Cited by in corpus (6)

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• Midrapidity hyperon production in pp and pA collisions from low to LHC energies
• Description of phi-meson production in hadronic and nuclear collisions at very high energies
• Production of phi-mesons on nuclear targets in the Quark-Gluon String model
• Evidence for a QCD accelerator in relativistic heavy-ion collisions
• Hadroproduction of neutral Kstar-mesons up to LHC energies