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

被引：8

作者：

Arakelyan, G. H. ^{[1
]}

Merino, C. ^{[2
,3
]}

Pajares, C. ^{[2
,3
]}

Shabelski, Yu M. ^{[4
,5
]}

机构：

[1] Yerevan Phys Inst, AI Alikhanyan Natl Sci Lab, Yerevan, Armenia

[2] Univ Santiago de Compostela, Dept Fis Particulas, Galiza, Spain

[3] Univ Santiago de Compostela, Inst Galego Fis Altas Enerxias, Galiza, Spain

[4] RAS, Petersburg Nucl Phys Inst, Gatchina, Russia

[5] NRC Kurchatov Inst, Moscow, Russia

来源：

PHYSICS OF ATOMIC NUCLEI | 2013年 / 76卷 / 03期

关键词：

QUARK-GLUON STRINGS; INCLUSIVE SPECTRA; SECONDARY PARTICLES; PRODUCTION ASYMMETRY; HADRON INTERACTIONS; SUPERHIGH ENERGIES; NUCLEAR TARGETS; NUMBER TRANSFER; MODEL; FRAGMENTS;

D O I：

10.1134/S1063778813020026

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

A significant asymmetry in baryon/antibaryon yields in the central region of high energy collisions is observed when the initial state has nonzero 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 cut Pomerons increases with initial energy. We present the quantitative predictions of the Quark-Gluon String Model for the Feynman scaling violation at LHC energies and at even higher energies that can be important for cosmic ray physics.

引用

页码：316 / 325

页数：10

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