Particle-yield modification in jet-like azimuthal di-hadron correlations in Pb-Pb collisions at $\sqrt(s_NN)$ = 2.76 TeV

Abstract : The yield of charged particles associated with high-pT trigger particles (8 < pT < 15 GeV/c) is measured with the ALICE detector in Pb-Pb collisions at sqrt(s_NN) = 2.76 TeV relative to proton-proton collisions at the same energy. The conditional per-trigger yields are extracted from the narrow jet-like correlation peaks in azimuthal di-hadron correlations. In the 5% most central collisions, we observe that the yield of associated charged particles with transverse momenta pT > 3 GeV/c on the away-side drops to about 60% of that observed in pp collisions, while on the near-side a moderate enhancement of 20-30% is found.
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Journal articles
Physical Review Letters, American Physical Society, 2012, 108, pp.092301. <10.1103/PhysRevLett.108.092301>


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Contributor : Florès Sylvie <>
Submitted on : Tuesday, October 4, 2011 - 2:00:58 PM
Last modification on : Tuesday, October 4, 2011 - 2:00:58 PM

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K. Aamodt, L. Aphecetche, N. Arbor, A. Baldisseri, A. Baldit, et al.. Particle-yield modification in jet-like azimuthal di-hadron correlations in Pb-Pb collisions at $\sqrt(s_NN)$ = 2.76 TeV. Physical Review Letters, American Physical Society, 2012, 108, pp.092301. <10.1103/PhysRevLett.108.092301>. <in2p3-00628910>

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