Nonuniversality of Transverse Momentum Dependent Parton Distributions at Small x

被引：31

作者：

Xiao, Bo-Wen ^{[1
]}

Yuan, Feng ^{[1
,2
]}

机构：

[1] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Nucl Sci, Berkeley, CA 94720 USA

[2] Brookhaven Natl Lab, RIKEN BNL Res Ctr, Upton, NY 11973 USA

来源：

PHYSICAL REVIEW LETTERS | 2010年 / 105卷 / 06期

关键词：

FINAL-STATE INTERACTIONS; DEEP-INELASTIC SCATTERING; SINGLE-SPIN ASYMMETRIES; DRELL-YAN PROCESSES; HARD PROCESSES; COLLISIONS; GAUGE; SATURATION; DIS;

D O I：

10.1103/PhysRevLett.105.062001

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We study the universality issue of the transverse momentum dependent parton distributions at small x, by comparing the initial and final state interaction effects in di-jet-correlations in pA collisions with those in deep inelastic lepton-nucleus scattering. We demonstrate the nonuniversality by performing an explicit calculation in a particular model where the multiple gauge boson exchange contributions are summed up to all orders. We comment on the implications of our results on the theoretical interpretation of dihadron correlation in dA collisions in terms of the saturation phenomena in deep inelastic lepton-nucleus scattering.

引用

页数：4

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