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Physical Review Letters 110 (2013) 152301
Net-Charge Fluctuations in Pb-Pb collisions at \sqrt(s)_NN = 2.76 TeV
B. Abelev, N. Arbor1, G. Conesa Balbastre1, J. Faivre, C. Furget1, R. Guernane1, S. Kox1, J.S. Real1, C. Silvestre1, R. Vernet2, I. Belikov3, B. Hippolyte3, C. Kuhn3, C. Roy3, X. Sanchez Castro3, S. Senyukov3, L. Aphecetche4, Guillaume Batigne4, E. Bergognon4, M. Bregant4, H. Delagrange4, O. Driga4, B. Erazmus4, M. Estienne4, M. Germain4, A. Lardeux4, F. Lefèvre4, L. Luquin4, G. Martınez Garcıa4, A. Mas4, L. Massacrier4, A. Matyja4, P. Pillot4, Y. Schutz4, A. Shabetai4, D. Stocco4, c. Cheshkov5, B. Cheynis5, L. Ducroux5, J.-Y. Grossiord5, M. Guilbaud5, R. Tieulent5, A. Uras5, Y. Zoccarato5, Y. .W. Baek6, A. Baldit6, 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
For the ALICE collaboration(s)
(2013)

We report the first measurement of the net-charge fluctuations in Pb-Pb collisions at \surd s_NN 2.76 TeV, measured with the ALICE detector at the CERN Large Hadron Collider. The dynamical fluctuations per unit entropy are observed to decrease when going from peripheral to central collisions. An additional reduction in the amount of fluctuations is seen in comparison to the results from lower energies. We examine the dependence of fluctuations on the pseudo-rapidity interval, which may account for the dilution of fluctuations during the evolution of the system. We find that the ALICE data points are between the theoretically predicted values for a hadron gas and a Quark-Gluon Plasma.
1:  LPSC - Laboratoire de Physique Subatomique et de Cosmologie
2:  CC IN2P3 - Centre de Calcul de l'inst. national de phy. nucléaire et de phy. des particules
3:  DRS-IPHC - Département Recherches Subatomiques
4:  SUBATECH - Laboratoire SUBATECH Nantes
5:  IPNL - Institut de Physique Nucléaire de Lyon
6:  LPC - Laboratoire de Physique Corpusculaire [Clermont-Ferrand]
Physics/High Energy Physics - Experiment

Physics/High Energy Physics - Phenomenology

Physics/Nuclear Experiment

Physics/Nuclear Theory
Fulltext link: 
http://fr.arXiv.org/abs/1207.6068