Two-particle azimuthal harmonics in pA collisions

被引：12

作者：

Davy, Manyika Kabuswa ^{[1
,2
]}

Marquet, Cyrille ^{[3
]}

Shi, Yu ^{[1
,2
]}

Xiao, Bo-Wen ^{[1
,2
,3
]}

Zhang, Cheng ^{[1
,2
]}

机构：

[1] Cent China Normal Univ, MOE, Key Lab Quark & Lepton Phys, Wuhan 430079, Hubei, Peoples R China

[2] Cent China Normal Univ, Inst Particle Phys, Wuhan 430079, Hubei, Peoples R China

[3] Univ Paris Saclay, Ecole Polytech, CPHT, CNRS, F-91128 Palaiseau, France

来源：

NUCLEAR PHYSICS A | 2019年 / 983卷

关键词：

Quantum chromodynamics; High-energy heavy-ion collisions; Particle correlations in small systems; Initial state; COLOR GLASS CONDENSATE; LONG-RANGE; ANGULAR-CORRELATIONS; PB COLLISIONS; ENERGY; SIDE; ASYMMETRIES; QUARK; STATE; PLUS;

D O I：

10.1016/j.nuclphysa.2018.11.001

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：

We compute two-particle production in pA collisions and extract azimuthal harmonics, using the dilute-dense formalism in the Color Glass Condensate framework. The multiple scatterings of the partons inside the projectile proton on the dense gluons inside the target nucleus are expressed in terms of Wilson lines. They generate interesting correlations, which can be partly responsible for the signals of collectivity measured at RHIC and at the LHC. Most notably, while gluon Wilson loops yield vanishing odd harmonics, quark Wilson loops can generate sizable odd harmonics for two particle correlations. By taking both quark and gluon channels into account, we find that the overall second and third harmonics lie rather close to the recent PHENIX data at RHIC. (C) 2018 Elsevier B.V. All rights reserved.

引用

页码：293 / 309

页数：17

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