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Measurement of the suppression and elliptic anisotropy of heavy-flavor muons in lead-lead collisions at $\sqrt{s_{NN}}=2.76$ TeV with the ATLAS detector

Measurements of the nuclear modification factor ($R_{AA}$) and the elliptic flow $v_{2}$ of muons from heavy-quark decays in Pb+Pb collisions at $\sqrt{s_{NN}}=2.76$ TeV from the ATLAS experiment are presented. The measurements are done over the $p_{T}$ range of 4-14~GeV and over the centrality rang...

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Detalles Bibliográficos
Autor principal: Mohapatra, Soumya
Lenguaje:eng
Publicado: 2016
Materias:
Acceso en línea:http://cds.cern.ch/record/2156558
Descripción
Sumario:Measurements of the nuclear modification factor ($R_{AA}$) and the elliptic flow $v_{2}$ of muons from heavy-quark decays in Pb+Pb collisions at $\sqrt{s_{NN}}=2.76$ TeV from the ATLAS experiment are presented. The measurements are done over the $p_{T}$ range of 4-14~GeV and over the centrality range of (0-60)%. A significance elliptic flow is observed over the full $p_{T}$ range for all centralities. The $R_{AA}$ results are consistent with previous measurements but have much more statistical precision. More than a factor of two suppression of the muon yield is observed in most central collisions. These measurements give us an insight into the interaction of heavy quarks with the bulk medium produced in heavy-ion collisions.