Centrality determination of Pb-Pb collisions at root s(NN)=2.76 TeV with ALICE

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

doi:10.1103/PhysRevC.88.044909

Centrality determination of Pb-Pb collisions at root s(NN)=2.76 TeV with ALICE

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

Experimental Particle Physics

282 Citations (Scopus)

Abstract

This publication describes the methods used to measure the centrality of inelastic Pb-Pb collisions at a center-of-mass energy of 2.76 TeV per colliding nucleon pair with ALICE. The centrality is a key parameter in the study of the properties of QCD matter at extreme temperature and energy density, because it is directly related to the initial overlap region of the colliding nuclei. Geometrical properties of the collision, such as the number of participating nucleons and the number of binary nucleon-nucleon collisions, are deduced from a Glauber model with a sharp impact parameter selection and shown to be consistent with those extracted from the data. The centrality determination provides a tool to compare ALICE measurements with those of other experiments and with theoretical calculations.

Original language	English
Article number	044909
Journal	Physical Review C. Nuclear Physics
Volume	88
Issue number	4
ISSN	0556-2813
DOIs	https://doi.org/10.1103/PhysRevC.88.044909
Publication status	Published - 15 Oct 2013

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Abelev, B., Adam, J., Adamova, D., Adrae, A. M., Aggarwal, M. M., Bearden, I., Bøggild, H., Christensen, C. H., Bilandzic, A., Gulbrandsen, K. H., Gaardhøje, J. J., Dalsgaard, H. H., Hansen, A. C., Nielsen, B. S., Nygaard, C., & Søgaard, C. (2013). Centrality determination of Pb-Pb collisions at root s(NN)=2.76 TeV with ALICE. Physical Review C. Nuclear Physics, 88(4), [044909]. https://doi.org/10.1103/PhysRevC.88.044909

Abelev, B, Adam, J, Adamova, D, Adrae, AM, Aggarwal, MM, Bearden, I , Bøggild, H , Christensen, CH, Bilandzic, A, Gulbrandsen, KH , Gaardhøje, JJ, Dalsgaard, HH, Hansen, AC, Nielsen, BS, Nygaard, C & Søgaard, C 2013, 'Centrality determination of Pb-Pb collisions at root s(NN)=2.76 TeV with ALICE', Physical Review C. Nuclear Physics, vol. 88, no. 4, 044909. https://doi.org/10.1103/PhysRevC.88.044909

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title = "Centrality determination of Pb-Pb collisions at root s(NN)=2.76 TeV with ALICE",

abstract = "This publication describes the methods used to measure the centrality of inelastic Pb-Pb collisions at a center-of-mass energy of 2.76 TeV per colliding nucleon pair with ALICE. The centrality is a key parameter in the study of the properties of QCD matter at extreme temperature and energy density, because it is directly related to the initial overlap region of the colliding nuclei. Geometrical properties of the collision, such as the number of participating nucleons and the number of binary nucleon-nucleon collisions, are deduced from a Glauber model with a sharp impact parameter selection and shown to be consistent with those extracted from the data. The centrality determination provides a tool to compare ALICE measurements with those of other experiments and with theoretical calculations.",

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AU - Abelev, B.

AU - Adam, J.

AU - Adamova, D.

AU - Adrae, A.M.

AU - Aggarwal, M.M.

AU - Bearden, Ian

AU - Bøggild, Hans

AU - Christensen, Christian Holm

AU - Bilandzic, Ante

AU - Gulbrandsen, Kristjan Herlache

AU - Gaardhøje, Jens Jørgen

AU - Dalsgaard, Hans Hjersing

AU - Hansen, Alexander Colliander

AU - Nielsen, Børge Svane

AU - Nygaard, Casper

AU - Søgaard, Carsten

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N2 - This publication describes the methods used to measure the centrality of inelastic Pb-Pb collisions at a center-of-mass energy of 2.76 TeV per colliding nucleon pair with ALICE. The centrality is a key parameter in the study of the properties of QCD matter at extreme temperature and energy density, because it is directly related to the initial overlap region of the colliding nuclei. Geometrical properties of the collision, such as the number of participating nucleons and the number of binary nucleon-nucleon collisions, are deduced from a Glauber model with a sharp impact parameter selection and shown to be consistent with those extracted from the data. The centrality determination provides a tool to compare ALICE measurements with those of other experiments and with theoretical calculations.

AB - This publication describes the methods used to measure the centrality of inelastic Pb-Pb collisions at a center-of-mass energy of 2.76 TeV per colliding nucleon pair with ALICE. The centrality is a key parameter in the study of the properties of QCD matter at extreme temperature and energy density, because it is directly related to the initial overlap region of the colliding nuclei. Geometrical properties of the collision, such as the number of participating nucleons and the number of binary nucleon-nucleon collisions, are deduced from a Glauber model with a sharp impact parameter selection and shown to be consistent with those extracted from the data. The centrality determination provides a tool to compare ALICE measurements with those of other experiments and with theoretical calculations.

U2 - 10.1103/PhysRevC.88.044909

DO - 10.1103/PhysRevC.88.044909

M3 - Journal article

SN - 2469-9985

VL - 88

JO - Physical Review C

JF - Physical Review C

IS - 4

M1 - 044909

ER -

Centrality determination of Pb-Pb collisions at root s(NN)=2.76 TeV with ALICE

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