Evidence of b-Jet Quenching in PbPb Collisions at root S-NN=2.76 TeV
Contribuinte(s) |
Universidade Estadual Paulista (UNESP) |
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Data(s) |
18/03/2015
18/03/2015
22/09/2014
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Resumo |
Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) 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 (p(T)) range of 80-250 GeV/c, and within pseudorapidity vertical bar eta vertical bar < 2. The nuclear modification factor ( R-AA) 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 R-AA 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 p(T) range studied. |
Formato |
16 |
Identificador |
http://dx.doi.org/10.1103/PhysRevLett.113.132301 Physical Review Letters. College Pk: Amer Physical Soc, v. 113, n. 13, 16 p., 2014. 0031-9007 http://hdl.handle.net/11449/117059 10.1103/PhysRevLett.113.132301 WOS:000344051400002 WOS000344051400002.pdf |
Idioma(s) |
eng |
Publicador |
Amer Physical Soc |
Relação |
Physical Review Letters |
Direitos |
closedAccess |
Tipo |
info:eu-repo/semantics/article |