Jet quenching and γ-jet correlation in high-energy heavy-ion collisions

被引：2

作者：

Wang, Xin-Nian ^{[1
,2
,3
]}

Zhu, Yan ^{[4
,5
]}

机构：

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

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

[3] Lawrence Berkeley Natl Lab, Div Nucl Sci, Berkeley, CA 94740 USA

[4] Univ Santiago Compostela, Dept Fis Particulas, E-15706 Santiago De Compostela, Galicia, Spain

[5] Univ Santiago Compostela, IGFAE, E-15706 Santiago De Compostela, Galicia, Spain

来源：

NUCLEAR PHYSICS A | 2014年 / 932卷

基金：

欧洲研究理事会;

关键词：

Jet quenching; gamma-jet; Azimuthal angle correlation; Jet fragmentation function;

D O I：

10.1016/j.nuclphysa.2014.07.018

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：

Medium modification of gamma-tagged jets in high-energy heavy-ion collisions is investigated within a linearized Boltzmann transport model which includes both elastic parton scattering and induced gluon emission. In Pb + Pb collisions at root s = 2.76 TeV, a gamma-tagged jet is seen to lose 15% of its energy at 0-10% central collisions. Simulations also point to a sizable azimuthal angle broadening of gamma-tagged jets at the tail of a distribution which should be measurable when experimental errors are significantly reduced. An enhancement at large z(jet) = p(L)/E-jet in jet fragmentation function at the Large Hadron Collider (LHC) can be attributed to the dominance of leading particles in the reconstructed jet. A gamma-tagged jet fragmentation function is shown to be more sensitive to jet quenching, therefore a better probe of the jet transport parameter. (c) 2014 Elsevier B.V. All rights reserved.

引用

页码：447 / 452

页数：6

共 10 条

[1]

[Anonymous], 2012, PHYS LETT B, V718, P773, DOI [10.1016/j.physletb.2012.11.003, DOI 10.1016/J.PHYSLETB.2012.11.003]

[2]

ATLAS Collaboration, ATLASCONF2012121

[3] FastJet user manual [J].

Cacciari, Matteo ;

Salam, Gavin P. ;

Soyez, Gregory .

EUROPEAN PHYSICAL JOURNAL C, 2012, 72 (03) :1-54

[4]

CMS Collaboration, CMSPASHIN12013

[5] Hadronic dissipative effects on elliptic flow in ultrarelativistic heavy-ion collisions [J].

Hirano, Tetsufumi ;

Heinz, Ulrich ;

Kharzeev, Dmitri ;

Lacey, Roy ;

Nara, Yasushi .

PHYSICS LETTERS B, 2006, 636 (06) :299-304

[6] Mach Cone Induced by γ-Triggered Jets in High-Energy Heavy-Ion Collisions [J].

Li, Hanlin ;

Liu, Fuming ;

Ma, Guo-liang ;

Wang, Xin-Nian ;

Zhu, Yan .

PHYSICAL REVIEW LETTERS, 2011, 106 (01)

[7] Medium Modification of γ Jets in High-Energy Heavy-Ion Collisions [J].

Wang, Xin-Nian ;

Zhu, Yan .

PHYSICAL REVIEW LETTERS, 2013, 111 (06)

[8] GLUON SHADOWING AND JET QUENCHING IN A+A COLLISIONS AT SQUARE-ROOT-S=200A GEV [J].

WANG, XN ;

GYULASSY, M .

PHYSICAL REVIEW LETTERS, 1992, 68 (10) :1480-1483

[9] HIJING - A MONTE-CARLO MODEL FOR MULTIPLE JET PRODUCTION IN PP, PA, AND AA COLLISIONS [J].

WANG, XN ;

GYULASSY, M .

PHYSICAL REVIEW D, 1991, 44 (11) :3501-3516

[10] Multiple parton scattering in nuclei: parton energy loss [J].

Wang, XN ;

Guo, XF .

NUCLEAR PHYSICS A, 2001, 696 (3-4) :788-832

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