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.

Centrality determination of Pb-Pb collisions at √sNN=2.76 TeV with ALICE / Abelev, B., Adam, J., Adamová, D., Adare, A.M., Aggarwal, M.M., Aglieri Rinella, G., Agnello, M., Agocs, A.G., Agostinelli, A., Ahammed, Z., Ahmad, N., Ahmad Masoodi, A., Ahn, S.U., Ahn, S.A., Ajaz, M., Akindinov, A., Aleksandrov, D., Alessandro, B., Alici, A., Alkin, A., et al.. - In: PHYSICAL REVIEW. C, NUCLEAR PHYSICS. - ISSN 0556-2813. - 88:4(2013). [10.1103/PhysRevC.88.044909]

Centrality determination of Pb-Pb collisions at √sNN=2.76 TeV with ALICE

BRUNO, Giuseppe Eugenio;
2013

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.
2013
http://journals.aps.org/prc/abstract/10.1103/PhysRevC.88.044909
Centrality determination of Pb-Pb collisions at √sNN=2.76 TeV with ALICE / Abelev, B., Adam, J., Adamová, D., Adare, A.M., Aggarwal, M.M., Aglieri Rinella, G., Agnello, M., Agocs, A.G., Agostinelli, A., Ahammed, Z., Ahmad, N., Ahmad Masoodi, A., Ahn, S.U., Ahn, S.A., Ajaz, M., Akindinov, A., Aleksandrov, D., Alessandro, B., Alici, A., Alkin, A., et al.. - In: PHYSICAL REVIEW. C, NUCLEAR PHYSICS. - ISSN 0556-2813. - 88:4(2013). [10.1103/PhysRevC.88.044909]
File in questo prodotto:
Non ci sono file associati a questo prodotto.

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11589/6811
Citazioni
  • Scopus 436
  • ???jsp.display-item.citation.isi??? 302
social impact