Transverse Momentum Distribution and Nuclear Modification Factor of Charged Particles in p-Pb Collisions at sqrt{s_NN} = 5.02 TeV - IN2P3 - Institut national de physique nucléaire et de physique des particules Access content directly
Journal Articles Physical Review Letters Year : 2013

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

B. Abelev
  • Function : Author
Laurent Aphecetche
B. Cheynis
Magali Estienne
Marie Germain
Maxime Guilbaud
Philippe Pillot
C. Roy
Alexandre Shabetai
Diego Stocco

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.

Dates and versions

in2p3-00742704 , version 1 (17-10-2012)

Identifiers

Cite

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, 2013, 110, pp.082302. ⟨10.1103/PhysRevLett.110.082302⟩. ⟨in2p3-00742704⟩
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