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J/ψ Elliptic Flow in Pb-Pb collisions at √ sNN = 2.76 TeV

E Abbas Nelson Carlin Filho; Gabriel Oliveira Valeriano de Barros; Airton Deppman; Marcel Araujo Silva Figueredo; Cristiane Jahnke; Denise Aparecida Moreira de Godoy; Marcelo Gameiro Munhoz; Antonio Carlos Oliveira da Silva; Elienos Pereira de Oliveira Filho; Alexandre Alarcon do Passo Suaide; Alejandro Szanto de Toledo

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Título:
J/ψ Elliptic Flow in Pb-Pb collisions at √ sNN = 2.76 TeV
Autor: E Abbas
Nelson Carlin Filho; Gabriel Oliveira Valeriano de Barros; Airton Deppman; Marcel Araujo Silva Figueredo; Cristiane Jahnke; Denise Aparecida Moreira de Godoy; Marcelo Gameiro Munhoz; Antonio Carlos Oliveira da Silva; Elienos Pereira de Oliveira Filho; Alexandre Alarcon do Passo Suaide; Alejandro Szanto de Toledo
Assuntos: COLISÕES DE ÍONS PESADOS RELATIVÍSTICOS; CROMODINÂMICA QUÂNTICA
Notas: arXiv.1303.5880
Descrição: We report on the ﬁrst measurement of inclusive J/ψ elliptic ﬂow, v2, in heavy-ion collisions at the LHC. The measurement is performed with the ALICE detector in Pb-Pb collisions at √ sNN = 2.76 TeV in the rapidity range 2.5 < y < 4.0. The dependence of the J/ψ v2 on the collision centrality and on the J/ψ transverse momentum is studied in the range 0 ≤ pT < 10 GeV/c. For semi-central Pb-Pb collisions at √ sNN = 2.76 TeV, an indication of non-zero v2 is observed with a maximum value of v2 = 0.116 ± 0.046(stat.) ± 0.029(syst.) for J/ψ in the transverse momentum range 2 ≤ pT < 4 GeV/c. The elliptic ﬂow measurement complements the previously reported ALICE results on the inclusive J/ψ nuclear modiﬁcation factor and favors the scenario of a signiﬁcant fraction of J/ψ production from charm quarks in a deconﬁned partonic phase
Editor: São Paulo
Data de criação/publicação: 2013
Formato: 16 p.
Idioma: Inglês

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