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  4. Evidence of b-Jet Quenching in PbPb Collisions at $\sqrt{s_{NN}}=2.76$ TeV
 
research article

Evidence of b-Jet Quenching in PbPb Collisions at $\sqrt{s_{NN}}=2.76$ TeV

Chatrchyan, Serguei
•
Khachatryan, Vardan
•
Sirunyan, Albert M
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September 22, 2014
Physical Review Letters

The production of jets associated to bottom quarks is measured for the first time in PbPb collisions at a center-of-mass energy of 2.76 TeV per nucleon pair. Jet spectra are reported in the transverse momentum (pT) range of 80–250  GeV/c, and within pseudorapidity |η|<2. The nuclear modification factor (RAA) calculated from these spectra shows a strong suppression in the b-jet yield in PbPb collisions relative to the yield observed in pp collisions at the same energy. The suppression persists to the largest values of pT studied, and is centrality dependent. The RAA is about 0.4 in the most central events, similar to previous observations for inclusive jets. This implies that jet quenching does not have a strong dependence on parton mass and flavor in the jet pT range studied.

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Type
research article
DOI
10.1103/PhysRevLett.113.132301
ArXiv ID

1312.4198

Author(s)
Chatrchyan, Serguei
Khachatryan, Vardan
Sirunyan, Albert M
Tumasyan, Armen
Adam, Wolfgang
Bergauer, Thomas
Dragicevic, Marko
Erö, Janos
Fabjan, Christian
Friedl, Markus
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Date Issued

2014-09-22

Published in
Physical Review Letters
Volume

113

Issue

13

Article Number

132301

Subjects

jet: bottom

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jet: hadroproduction

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jet: quenching

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p p: scattering

•

jet: transverse momentum

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flavor: dependence

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heavy ion: scattering

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lead

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bottom: yield

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transverse momentum dependence

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impact parameter: dependence

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2760 GeV-cms/nucleon

Editorial or Peer reviewed

REVIEWED

Written at

OTHER

EPFL units
LPHE  
Available on Infoscience
February 17, 2020
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/165739
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