Pseudorapidity density of charged particles in p-Pb collisions at sqrt(sNN) = 5.02 TeV

B. Abelev; L. Aphecetche; A. Baldisseri; G. Batigne; I. Belikov; A.A.E. Bergognon; H. Borel; M. Bregant; J. Castillo Castellanos; J.L. Charvet; c. Cheshkov; B. Cheynis; H. Delagrange; O. Driga; L. Ducroux; M. Estienne; M. Germain; C. Geuna; J.-Y. Grossiord; M. Guilbaud; C. Kuhn; A. Lardeux; G. Martınez Garcıa; A. Mas; L. Massacrier; P. Pillot; C. Roy; X. Sanchez Castro; S. Senyukov; A. Shabetai; D. Stocco; R. Tieulent; A. Uras; Y. Zoccarato; N. Arbor; G. Conesa Balbastre; J. Faivre; C. Furget; R. Guernane; S. Kox; J.S. Real; C. Silvestre; 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

HAL : in2p3-00744553, version 1

arXiv : 1210.3615

DOI : 10.1103/PhysRevLett.110.032301

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Physical Review Letters 110 (2013) 032301

Pseudorapidity density of charged particles in p-Pb collisions at sqrt(sNN) = 5.02 TeV

B. Abelev, L. Aphecetche¹, A. Baldisseri², G. Batigne¹, I. Belikov³, A.A.E. Bergognon¹, H. Borel², M. Bregant¹, J. Castillo Castellanos², J.L. Charvet², c. Cheshkov⁴, B. Cheynis⁴, H. Delagrange¹, O. Driga¹, L. Ducroux⁴, M. Estienne¹, M. Germain¹, C. Geuna², J.-Y. Grossiord⁴, M. Guilbaud⁴, C. Kuhn³, A. Lardeux¹, G. Martınez Garcıa¹, A. Mas¹, L. Massacrier¹, P. Pillot¹, C. Roy³, X. Sanchez Castro³, S. Senyukov³, A. Shabetai¹, D. Stocco¹, R. Tieulent⁴, A. Uras⁴, Y. Zoccarato⁴, N. Arbor⁵, G. Conesa Balbastre⁵, J. Faivre⁵, C. Furget⁵, R. Guernane⁵, S. Kox⁵, J.S. Real⁵, C. Silvestre⁵, 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

ALICE Collaboration(s)

(2013)

The charged-particle pseudorapidity density measured over 4 units of pseudorapidity in non-single-diffractive (NSD) p-Pb collisions at a centre-of-mass energy per nucleon pair sqrt(sNN) = 5.02 TeV is presented. The average value at midrapidity is measured to be 16.81 \pm 0.71 (syst.), which corresponds to 2.14 \pm 0.17 (syst.) per participating nucleon. This is 16% lower than in NSD pp collisions interpolated to the same collision energy, and 84% higher than in d-Au collisions at sqrt(sNN) = 0.2 TeV. The measured pseudorapidity density in p-Pb collisions is compared to model predictions, and provides new constraints on the description of particle production in high-energy nuclear collisions.

1 :	SUBATECH - Laboratoire SUBATECH Nantes

2 :	IRFU - Institut de Recherches sur les lois Fondamentales de l'Univers (ex DAPNIA)

3 :	DRS-IPHC - Département Recherches Subatomiques

4 :	IPNL - Institut de Physique Nucléaire de Lyon

5 :	LPSC - Laboratoire de Physique Subatomique et de Cosmologie

6 :	LPC-CLERMONT - Laboratoire de Physique Corpusculaire de Clermont-Ferrand

Thème(s)

Physique/Physique Nucléaire Expérimentale

Lien vers le texte intégral :

http://fr.arXiv.org/abs/1210.3615


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