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

B. Abelev; L. Aphecetche; A. Baldisseri; A.A.E. Bergognon; H. Borel; M. Bregant; J.L. Charvet; C. Cheshkov; B. Cheynis; H. Delagrange; O. Driga; L. Ducroux; M. Estienne; M. Germain; C. Geuna; J.-Y. Grossiord; M. Guilbaud; B. Hippolyte; C. Kuhn; A. Lardeux; A. Mas; L. Massacrier; P. Pillot; C. Roy; S. Senyukov; A. Shabetai; D. Stocco; R. Tieulent; A. Uras; R. Vernet; Y. Zoccarato; Y.W. Baek; V. Barret; N. Bastid; P. Crochet; P. Dupieux; R. Ichou; X. Lopez; F. Manso; M. Marchisone; S. Porteboeuf-Houssais; P. Rosnet; B. Vulpescu; X. Zhang; N. Arbor; G. Conesa Balbastre; J. Faivre; C. Furget; R. Guernane; S. Kox; J.S. Real; C. Silvestre

doi:10.1103/PhysRevLett.110.082302

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

B. Abelev L. Aphecetche ¹ A. Baldisseri ² A.A.E. Bergognon ¹ H. Borel ² M. Bregant ¹ J.L. Charvet ² C. Cheshkov ³ B. Cheynis ³ H. Delagrange ¹ O. Driga ¹ L. Ducroux ³ M. Estienne ¹ M. Germain ¹ C. Geuna ² J.-Y. Grossiord ³ M. Guilbaud ³ B. Hippolyte ⁴ C. Kuhn ⁴ A. Lardeux ¹ A. Mas ¹ L. Massacrier ¹ P. Pillot ¹ C. Roy ⁴ S. Senyukov ⁴ A. Shabetai ¹ D. Stocco ¹ R. Tieulent ³ A. Uras ³ R. Vernet ⁵ Y. Zoccarato ³ Y.W. Baek ⁶ V. Barret ⁶ N. Bastid ⁶ P. Crochet ⁶ P. Dupieux ⁶ R. Ichou ⁶ X. Lopez ⁶ F. Manso ⁶ M. Marchisone ⁶ S. Porteboeuf-Houssais ⁶ P. Rosnet ⁶ B. Vulpescu ⁶ X. Zhang ⁶ N. Arbor ⁷ G. Conesa Balbastre ⁷ J. Faivre ⁷ C. Furget ⁷ R. Guernane ⁷ S. Kox ⁷ J.S. Real ⁷ C. Silvestre ⁷

1 SUBATECH - Laboratoire SUBATECH Nantes

2 IRFU - Institut de Recherches sur les lois Fondamentales de l'Univers

3 IPNL - Institut de Physique Nucléaire de Lyon

4 DRS-IPHC - Département Recherches Subatomiques

5 CC-IN2P3 - Centre de Calcul de l'IN2P3

6 LPC - Laboratoire de Physique Corpusculaire - Clermont-Ferrand

7 LPSC - Laboratoire de Physique Subatomique et de Cosmologie

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.

Type de document :

Article dans une revue

Physical Review Letters, American Physical Society, 2013, 110, pp.082302. 〈10.1103/PhysRevLett.110.082302〉

Domaine :

Physique [physics] / Physique des Hautes Energies - Expérience [hep-ex]

Physique [physics] / Physique Nucléaire Expérimentale [nucl-ex]

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http://hal.in2p3.fr/in2p3-00742704
Contributeur : Sylvie Flores <>
Soumis le : mercredi 17 octobre 2012 - 08:22:28
Dernière modification le : mardi 22 mai 2018 - 21:48:06

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

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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

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