Pushing forward jet substructure measurements in heavy-ion collisions

被引：10

作者：

Pablos, Daniel ^{[1
]}

Soto-Ontoso, Alba ^{[2
,3
]}

机构：

[1] INFN, Sez Torino, Via Pietro Giuria 1, I-10125 Turin, Italy

[2] Univ Paris Saclay, CNRS, CEA, Inst Phys Theor, F-91191 Gif Sur Yvette, France

[3] CERN, Theoret Phys Dept, CH-1211 Geneva 23, Switzerland

来源：

PHYSICAL REVIEW D | 2023年 / 107卷 / 09期

基金：

欧洲研究理事会;

关键词：

PLUS PB COLLISIONS; PICTURE;

D O I：

10.1103/PhysRevD.107.094003

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Energetic jets that traverse the quark-gluon plasma created in heavy-ion collisions serve as excellent probes to study this new state of deconfined QCD matter. Presently, however, our ability to achieve a crisp theoretical interpretation of the crescent number of jet observables measured in experiments is hampered by the presence of selection biases. The aim of this work is to minimize those selection biases associated to the modification of the quark-versus gluon-initiated jet fraction in order to assess the presence of other medium-induced effects, namely, color decoherence, by exploring the rapidity dependence of jet substructure observables. So far, all jet substructure measurements at midrapidity have shown that heavy-ion jets are narrower than vacuum jets. We show both analytically and with Monte Carlo simulations that if the narrowing effect persists at forward rapidities, where the quark-initiated jet fraction is greatly increased, this could serve as an unambiguous experimental observation of color decoherence dynamics in heavy-ion collisions.

引用

页数：18

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