Net-Charge Fluctuations in Pb-Pb Collisions at root s(NN)=2.76 TeV

B. Abelev; J. Adam; D. Adamova; A.M. Adare; M.M. Aggarwal; Ian Bearden; Hans Bøggild; Ante Bilandzic; Christian Holm Christensen; Hans Hjersing Dalsgaard; Jens Jørgen Gaardhøje; Kristjan Herlache Gulbrandsen; Alexander Colliander Hansen; Børge Svane Nielsen; Casper Nygaard; Carsten Søgaard

doi:10.1103/PhysRevLett.110.152301

Net-Charge Fluctuations in Pb-Pb Collisions at root s(NN)=2.76 TeV

B. Abelev, J. Adam, D. Adamova, A.M. Adare, M.M. Aggarwal, Ian Bearden, Hans Bøggild, Ante Bilandzic, Christian Holm Christensen, Hans Hjersing Dalsgaard, Jens Jørgen Gaardhøje, Kristjan Herlache Gulbrandsen, Alexander Colliander Hansen, Børge Svane Nielsen, Casper Nygaard, Carsten Søgaard

Experimental Particle Physics

68 Citations (Scopus)

Abstract

We report the first measurement of the net-charge fluctuations in Pb-Pb collisions at √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 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.

Original language	English
Article number	152301
Journal	Physical Review Letters
Volume	110
Issue number	15
ISSN	0031-9007
DOIs	https://doi.org/10.1103/PhysRevLett.110.152301
Publication status	Published - 10 Apr 2013

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Abelev, B., Adam, J., Adamova, D., Adare, A. M., Aggarwal, M. M., Bearden, I., Bøggild, H., Bilandzic, A., Christensen, C. H., Dalsgaard, H. H., Gaardhøje, J. J., Gulbrandsen, K. H., Hansen, A. C., Nielsen, B. S., Nygaard, C., & Søgaard, C. (2013). Net-Charge Fluctuations in Pb-Pb Collisions at root s(NN)=2.76 TeV. Physical Review Letters, 110(15), [152301]. https://doi.org/10.1103/PhysRevLett.110.152301

Abelev, B, Adam, J, Adamova, D, Adare, AM, Aggarwal, MM, Bearden, I , Bøggild, H, Bilandzic, A, Christensen, CH, Dalsgaard, HH, Gaardhøje, JJ , Gulbrandsen, KH, Hansen, AC, Nielsen, BS, Nygaard, C & Søgaard, C 2013, 'Net-Charge Fluctuations in Pb-Pb Collisions at root s(NN)=2.76 TeV', Physical Review Letters, vol. 110, no. 15, 152301. https://doi.org/10.1103/PhysRevLett.110.152301

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title = "Net-Charge Fluctuations in Pb-Pb Collisions at root s(NN)=2.76 TeV",

abstract = "We report the first measurement of the net-charge fluctuations in Pb-Pb collisions at √sNN=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 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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AU - Abelev, B.

AU - Adam, J.

AU - Adamova, D.

AU - Adare, A.M.

AU - Aggarwal, M.M.

AU - Bearden, Ian

AU - Bøggild, Hans

AU - Bilandzic, Ante

AU - Christensen, Christian Holm

AU - Dalsgaard, Hans Hjersing

AU - Gaardhøje, Jens Jørgen

AU - Gulbrandsen, Kristjan Herlache

AU - Hansen, Alexander Colliander

AU - Nielsen, Børge Svane

AU - Nygaard, Casper

AU - Søgaard, Carsten

PY - 2013/4/10

Y1 - 2013/4/10

N2 - We report the first measurement of the net-charge fluctuations in Pb-Pb collisions at √sNN=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 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.

AB - We report the first measurement of the net-charge fluctuations in Pb-Pb collisions at √sNN=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 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.

U2 - 10.1103/PhysRevLett.110.152301

DO - 10.1103/PhysRevLett.110.152301

M3 - Journal article

C2 - 25167254

SN - 0031-9007

VL - 110

JO - Physical Review Letters

JF - Physical Review Letters

IS - 15

M1 - 152301

ER -

Net-Charge Fluctuations in Pb-Pb Collisions at root s(NN)=2.76 TeV

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