Azimuthal correlations of heavy quarks in Pb + Pb collisions at s√=2.76 TeV at the CERN Large Hadron Collider - IN2P3 - Institut national de physique nucléaire et de physique des particules Access content directly
Journal Articles Physical Review C Year : 2014

Azimuthal correlations of heavy quarks in Pb + Pb collisions at s√=2.76 TeV at the CERN Large Hadron Collider

Marlene Nahrgang
Joerg Aichelin
Klaus Werner

Abstract

In this paper we study the azimuthal correlations of heavy quarks in Pb+Pb collisions with $\sqrt{s}=2.76$ TeV at LHC. Due to the interaction with the medium heavy quarks and antiquarks are deflected from their original direction and the initial correlation of the pair is broadened. We investigate this effect for different transverse momentum classes. Low-momentum heavy-quark pairs lose their leading order back-to-back initial correlation, while a significant residual correlation survives at large momenta. Due to the larger acquired average deflection from their original directions the azimuthal correlations of heavy-quark pairs are broadened more efficiently in a purely collisional energy loss mechanism compared to including radiative corrections. This discriminatory feature survives when next-to-leading order production processes are included.

Dates and versions

in2p3-00835775 , version 1 (19-06-2013)

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Marlene Nahrgang, Joerg Aichelin, Pol-Bernard Gossiaux, Klaus Werner. Azimuthal correlations of heavy quarks in Pb + Pb collisions at s√=2.76 TeV at the CERN Large Hadron Collider. Physical Review C, 2014, 90, pp.024907. ⟨10.1103/PhysRevC.90.024907⟩. ⟨in2p3-00835775⟩
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