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

Collaboration, TALICE; (2012) Particle-yield modification in jet-like azimuthal di-hadron correlations in Pb-Pb collisions at sqrt(s_NN) = 2.76 TeV. Physical Review Letters , 108 (9) , Article 092301. 10.1103/PhysRevLett.108.092301. Green open access

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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: Article
Title: Particle-yield modification in jet-like azimuthal di-hadron correlations in Pb-Pb collisions at sqrt(s_NN) = 2.76 TeV
Open access status: An open access version is available from UCL Discovery
DOI: 10.1103/PhysRevLett.108.092301
Publisher version: http://dx.doi.org/10.1103/PhysRevLett.108.092301
Language: English
Additional information: © 2012 CERN, for the ALICE Collaboration revised version - accepted by PRL
UCL classification: UCL
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy
URI: https://discovery.ucl.ac.uk/id/eprint/1374583
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