Novel subjet observables for jet quenching in heavy-ion collisions

被引：25

作者：

Apolinario, Liliana ^{[1
,2
]}

Milhano, Jose Guilherme ^{[1
,2
,3
]}

Ploskon, Mateusz ^{[4
]}

XiaomingZhang ^{[5
]}

机构：

[1] LIP, Av Prof Gama Pinto 2, P-1649003 Lisbon, Portugal

[2] IST Univ Lisbon, Av Rovisco Pais 1, P-1049001 Lisbon, Portugal

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

[4] Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA

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

来源：

EUROPEAN PHYSICAL JOURNAL C | 2018年 / 78卷 / 06期

关键词：

QUARK-GLUON PLASMA; PB-PB COLLISIONS; SUPPRESSION; FRAGMENTATION; PERSPECTIVE; MOMENTUM; SHAPES;

D O I：

10.1140/epjc/s10052-018-5999-2

中图分类号：

O412 [相对论、场论]; O572.2 [粒子物理学];

学科分类号：

摘要：

Using a novel observable that relies on the momentum difference of the two most energetic subjets within a jet Delta S-12 we study the internal structure of highenergy jets simulated by several Monte Carlo event generators that implement the partonic energy-loss in a dense partonic medium. Based on inclusive jet and dijet production we demonstrate that Delta S-12 is an effective tool to discriminate between different models of jet modifications over a broad kinematic range. The new quantity, while preserving the collinear and infrared safety of modern jet algorithms, it is experimentally attractive because of its inherent resilience against backgrounds of heavy-ion collisions.

引用

页数：11

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