Jet drift and collective flow in heavy-ion collisions

被引：11

作者：

Antiporda, Logan ^{[1
]}

Bahder, Joseph ^{[1
]}

Rahman, Hasan ^{[1
]}

Sievert, Matthew D. ^{[1
]}

机构：

[1] New Mexico State Univ, Dept Phys, Las Cruces, NM 88003 USA

来源：

PHYSICAL REVIEW D | 2022年 / 105卷 / 05期

关键词：

ENERGY-LOSS; BREMSSTRAHLUNG;

D O I：

10.1103/PhysRevD.105.054025

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We study the tomographic applications of a new phenomenon we dub "jet drift"-the deflection of highenergy particles and jets toward the direction of a flowing medium-to the quark-gluon plasma produced in heavy-ion collisions. While the physics of jet drift is quite general, for specificity we consider the case of photon-jet production at midrapidity. Beginning with the simplest possible model, a large slab of uniformly flowing plasma, we systematically introduce the geometrical elements of a heavy-ion collision in a simple optical Glauber model. We find that the moving medium causes the jet to drift in the direction of the flow, bending its trajectory and leaving detailed signatures of the flow pattern in the distribution of gamma + jet acoplanarities. In the elliptical geometries produced in noncentral collisions, this drift effect leads to a strong geometry coupling which persists despite the addition of event-by-event fluctuations in the jet production point, impact parameter, and acoplanarity. We propose a new observable to measure the jet drift effect through the correlation of gamma + jet acoplanarities with the elliptic flow of soft particles. Preliminary estimates suggest this correlation may be studied at sPHENIX and the LHC.

引用

页数：22

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