Charged particle production at large transverse momentum in Pb-Pb collisions at √sNN=2.76 TeV measured with ALICE at the LHC

被引：12

作者：

Otwinowski, Jacek ^{[1
]}

机构：

[1] GSI Helmholtz Ctr Heavy Ion Res GmbH, D-64291 Darmstadt, Germany

来源：

JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS | 2011年 / 38卷 / 12期

关键词：

QUARK-GLUON PLASMA; COLLABORATION; PERSPECTIVE;

D O I：

10.1088/0954-3899/38/12/124112

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：

Transverse momentum (p(T)) spectra of charged particles are measured as a function of event centrality in Pb-Pb collisions at root s(NN) = 2.76 TeV with ALICE at the LHC. The spectra are compared to those measured in pp collisions at the same collision energy in terms of the nuclear modification factor R-AA. The high-p(T) charge particle production in central Pb-Pb collisions (0-5%) is strongly suppressed by a factor approximate to 6 at transverse momenta p(T) = 6-7 GeV/c as compared to expectation from independent superposition of nucleon-nucleon collisions. Above p(T) = 7 GeV/c there is a significant rise in the nuclear modification factor, which reaches R-AA approximate to 0.4 at p(T) = 50 GeV/c. The measured suppression of high-p(T) particles is stronger than that measured at the RHIC.

引用

页数：4

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