Long-range and short-range dihadron angular correlations in central PbPb collisions at psNN = 2:76 TeV
Contribuinte(s) |
Universidade Estadual Paulista (UNESP) |
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Data(s) |
27/05/2014
27/05/2014
05/10/2011
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Resumo |
First measurements of dihadron correlations for charged particles are presented for central PbPb collisions at a nucleon-nucleon center-of-mass energy of 2.76TeV over a broad range in relative pseudorapidity (Δν) and the full range of relative azimuthal angle (Δø). The data were collected with the CMS detector, at the LHC. A broadening of the away-side (Δø y≈ π) azimuthal correlation is observed at all Δν, as compared to the measurements in pp collisions. Furthermore, long-range dihadron correlations in Δν are observed for particles with similar ø values. This phenomenon, also known as the \ridge, persists up to at least jΔνj = 4. For particles with transverse momenta (pT) of 2-4 GeV/c, the ridge is found to be most prominent when these particles are correlated with particles of pT = 2-6 GeV/c, and to be much reduced when paired with particles of pT = 10-12 GeV/c. Copyright CERN. |
Identificador |
http://dx.doi.org/10.1007/JHEP07(2011)076 Journal of High Energy Physics, v. 2011, n. 7, 2011. 1126-6708 1029-8479 http://hdl.handle.net/11449/72735 10.1007/JHEP07(2011)076 2-s2.0-80053362057 2-s2.0-80053362057.pdf |
Idioma(s) |
eng |
Relação |
Journal of High Energy Physics |
Direitos |
openAccess |
Palavras-Chave | #Hadron-Hadron Scattering Op |
Tipo |
info:eu-repo/semantics/article |