Measurements of charge-dependent azimuthal correlations with the ALICE detector at the LHC are reported for Pb-Pb collisions at sqrt sNN = 2.76 TeV. Two- and three-particle charge-dependent azimuthal correlations in the pseudorapidity range eta < 0.8 are presented as a function of the collision centrality, particle separation in pseudorapidity, and transverse momentum. A clear signal compatible with a chargedependent separation relative to the reaction plane is observed, which shows little or no collision energy dependence when compared to measurements at RHIC energies. This provides a new insight for understanding the nature of the charge-dependent azimuthal correlations observed at RHIC and LHC energies.
Charge separation relative to the reaction plane in Pb-Pb collisions at √sNN=2.76 TeV
BEOLE', Stefania;BIANCHI, LIVIO;BOSSU', FRANCESCO;BUFALINO, STEFANIA;CORRALES MORALES, YASSER;FERRETTI, Alessandro;GAGLIARDI, Martino;GALLIO, Mauro;INNOCENTI, GIAN MICHELE;LEONCINO, MARCO;MARCHISONE, MASSIMILIANO;MASERA, Massimo;MILANO, LEONARDO;RUSSO, RICCARDO;VERCELLIN, Ermanno;
2013-01-01
Abstract
Measurements of charge-dependent azimuthal correlations with the ALICE detector at the LHC are reported for Pb-Pb collisions at sqrt sNN = 2.76 TeV. Two- and three-particle charge-dependent azimuthal correlations in the pseudorapidity range eta < 0.8 are presented as a function of the collision centrality, particle separation in pseudorapidity, and transverse momentum. A clear signal compatible with a chargedependent separation relative to the reaction plane is observed, which shows little or no collision energy dependence when compared to measurements at RHIC energies. This provides a new insight for understanding the nature of the charge-dependent azimuthal correlations observed at RHIC and LHC energies.File | Dimensione | Formato | |
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PhysRevLett.110.012301.pdf
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