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.
Type de document :
Article dans une revue
Physical Review Letters, American Physical Society, 2012, 108, pp.092301. <10.1103/PhysRevLett.108.092301>


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Soumis le : mardi 4 octobre 2011 - 14:58:05
Dernière modification le : mercredi 27 juillet 2016 - 14:48:48

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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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