Z 0-tagged quark jets at the large hadron collider

被引：6

作者：

Kunde, G. J. ^{[1
]}

van Hecke, H. ^{[1
]}

Hessler, K. ^{[1
]}

Mironov, C. ^{[1
]}

机构：

[1] Los Alamos Natl Lab, Div Phys, Los Alamos, NM 87506 USA

来源：

EUROPEAN PHYSICAL JOURNAL C | 2009年 / 61卷 / 04期

关键词：

HEAVY-ION COLLISIONS; ENERGY-LOSS; LHC; CMS;

D O I：

10.1140/epjc/s10052-009-0955-9

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：

The Large Hadron Collider will allow studies of hard probes in nucleus-nucleus collisions which were not accessible at the Relativistic Heavy Ion Collider-even the study of small cross-section Z (0)-tagged jets becomes possible. Going beyond the measurement of back-to-back correlations of two strongly interacting particles to measure plasma properties, we replace one side by an electromagnetic probe which propagates through the plasma undisturbed and therefore provides a measurement of the energy of the initial hard scattering. We show that at sufficiently high transverse momentum the Z (0)-tagged jets originate predominately from the fragmentation of quarks and anti-quarks while gluon jets are suppressed. We propose to use lepton-pair tagged jets to study medium-induced partonic energy loss and to measure in-medium parton fragmentation functions to determine the opacity of the quark gluon plasma.

引用

页码：785 / 788

页数：4

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