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Transverse Momentum Distribution and Nuclear Modification Factor of Charged Particles in p-Pb Collisions at sqrt{s_NN} = 5.02 TeV

Abstract : The transverse momentum (p_T) distribution of primary charged particles is measured in non single-diffractive p-Pb collisions at sqrt{s_NN} = 5.02 TeV with the ALICE detector at the LHC. The p_T spectra measured near central rapidity in the range 0.5 < p_T < 20 GeV/c exhibit a weak pseudorapidity dependence. The nuclear modification factor R_pPb is consistent with unity for p_T above 2 GeV/c. This measurement indicates that the strong suppression of hadron production at high p_T observed in Pb-Pb collisions at the LHC is not due to an initial-state effect. The measurement is compared to theoretical calculations.
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http://hal.in2p3.fr/in2p3-00742704
Contributor : Sylvie Flores <>
Submitted on : Wednesday, October 17, 2012 - 8:22:28 AM
Last modification on : Monday, July 20, 2020 - 9:18:26 AM

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B. Abelev, Laurent Aphecetche, A. Baldisseri, A.A.E. Bergognon, H. Borel, et al.. Transverse Momentum Distribution and Nuclear Modification Factor of Charged Particles in p-Pb Collisions at sqrt{s_NN} = 5.02 TeV. Physical Review Letters, American Physical Society, 2013, 110, pp.082302. ⟨10.1103/PhysRevLett.110.082302⟩. ⟨in2p3-00742704⟩

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