Measurement of isolated photon production in pp and PbPb collisions at root s(NN)=2.76 TeV
Contribuinte(s) |
Universidade Estadual Paulista (UNESP) |
---|---|
Data(s) |
30/09/2013
20/05/2014
30/09/2013
20/05/2014
04/04/2012
|
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) Isolated photon production is measured in proton-proton and lead-lead collisions at nucleon-nucleon centre-of-mass energies of 2.76 TeV in the pseudorapidity range vertical bar eta vertical bar < 1.44 and transverse energies E-T between 20 and 80 GeV with the CMS detector at the LHC. The measured ET spectra are found to be in good agreement with next-to-leading-order perturbative QCD predictions. The ratio of PbPb to pp isolated photon E-T-differential yields, scaled by the number of incoherent nucleon-nucleon collisions, is consistent with unity for all PbPb reaction centralities. (C) 2012 CERN. Published by Elsevier BM. All rights reserved. |
Formato |
256-277 |
Identificador |
http://dx.doi.org/10.1016/j.physletb.2012.02.077 Physics Letters B. Amsterdam: Elsevier B.V., v. 710, n. 2, p. 256-277, 2012. 0370-2693 http://hdl.handle.net/11449/24220 10.1016/j.physletb.2012.02.077 WOS:000302838100003 |
Idioma(s) |
eng |
Publicador |
Elsevier B.V. |
Relação |
Physics Letters B |
Direitos |
closedAccess |
Palavras-Chave | #CMS #Physics #Heavy-ions #Photons |
Tipo |
info:eu-repo/semantics/article |