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Physical Review Letters 110 (2013) 082302
Transverse Momentum Distribution and Nuclear Modification Factor of Charged Particles in p-Pb Collisions at sqrt{s_NN} = 5.02 TeV
B. Abelev, L. Aphecetche1, A. Baldisseri2, A.A.E. Bergognon1, H. Borel2, M. Bregant1, J.L. Charvet2, c. Cheshkov3, B. Cheynis3, H. Delagrange1, O. Driga1, L. Ducroux3, M. Estienne1, M. Germain1, C. Geuna2, J.-Y. Grossiord3, M. Guilbaud3, B. Hippolyte4, C. Kuhn4, A. Lardeux1, A. Mas1, L. Massacrier1, P. Pillot1, C. Roy4, S. Senyukov4, A. Shabetai1, D. Stocco1, R. Tieulent3, A. Uras3, R. Vernet5, Y. Zoccarato3, Y.W. Baek6, V. Barret6, N. Bastid6, P. Crochet6, P. Dupieux6, R. Ichou6, X. Lopez6, F. Manso6, M. Marchisone6, S. Porteboeuf-Houssais6, P. Rosnet6, B. Vulpescu6, X. Zhang6, N. Arbor7, G. Conesa Balbastre7, J. Faivre7, C. Furget7, R. Guernane7, S. Kox7, J.S. Real7, C. Silvestre7
For the ALICE collaboration(s)
(2013)

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.
1:  SUBATECH - Laboratoire SUBATECH Nantes
2:  IRFU - Institut de Recherches sur les lois Fondamentales de l'Univers (ex DAPNIA)
3:  IPNL - Institut de Physique Nucléaire de Lyon
4:  DRS-IPHC - Département Recherches Subatomiques
5:  CC IN2P3 - Centre de Calcul de l'inst. national de phy. nucléaire et de phy. des particules
6:  LPC-CLERMONT - Laboratoire de Physique Corpusculaire de Clermont-Ferrand
7:  LPSC - Laboratoire de Physique Subatomique et de Cosmologie
Physics/High Energy Physics - Experiment

Physics/Nuclear Experiment
Fulltext link: 
http://fr.arXiv.org/abs/1210.4520