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Net-Charge Fluctuations in Pb-Pb Collisions at sNN=2.76TeV

B. Abelev et al. (ALICE Collaboration)
Phys. Rev. Lett. 110, 152301 – Published 10 April 2013

Abstract

We report the first measurement of the net-charge fluctuations in Pb-Pb collisions at sNN=2.76TeV, 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 pseudorapidity interval, which may account for the dilution of fluctuations during the evolution of the system. We find that the fluctuations at the LHC are smaller compared to the measurements at the BNL Relativistic Heavy Ion Collider, and as such, closer to what has been theoretically predicted for the formation of a quark-gluon plasma.

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  • Received 26 July 2012

DOI:https://doi.org/10.1103/PhysRevLett.110.152301

This article is available under the terms of the Creative Commons Attribution 3.0 License. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI.

© 2013 CERN, for the ALICE Collaboration

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Vol. 110, Iss. 15 — 12 April 2013

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