作者
Betty Abelev, Jaroslav Adam, Dagmar Adamova, Andrew Marshall Adare, MM Aggarwal, Gianluca Aglieri Rinella, Michelangelo Agnello, Andras Gabor Agocs, Andrea Agostinelli, Zubayer Ahammed, N Ahmad, A Ahmad Masoodi, SU Ahn, SA Ahn, M Ajaz, A Akindinov, D Aleksandrov, B Alessandro, A Alici, A Alkin, E Almaráz Aviña, J Alme, T Alt, V Altini, S Altinpinar, I Altsybeev, C Andrei, A Andronic, V Anguelov, J Anielski, C Anson, T Antičić, F Antinori, P Antonioli, L Aphecetche, H Appelshaeuser, N Arbor, S Arcelli, A Arend, N Armesto, R Arnaldi, T Aronsson, IC Arsene, M Arslandok, A Asryan, A Augustinus, R Averbeck, TC Awes, J Aeystoe, MD Azmi, M Bach, A Badala, YW Baek, R Bailhache, R Bala, A Baldisseri, F Baltasar Dos Santos Pedrosa, J Ban, RC Baral, R Barbera, F Barile, GG Barnaföldi, LS Barnby, V Barret, J Bartke, M Basile, N Bastid, S Basu, B Bathen, G Batigne, B Batyunya, C Baumann, IG Bearden, H Beck, NK Behera, I Belikov, F Bellini, R Bellwied, E Belmont-Moreno, G Bencedi, S Beole, I Berceanu, A Bercuci, Y Berdnikov, D Berenyi, AAE Bergognon, D Berzano, L Betev, A Bhasin, AK Bhati, J Bhom, L Bianchi, N Bianchi, J Bielčík, J Bielčíková, A Bilandzic, S Bjelogrlic, F Blanco, F Blanco, D Blau, C Blume, M Boccioli, S Böttger, A Bogdanov, H Bøggild, M Bogolyubsky, L Boldizsar, M Bombara, J Book, H Borel, A Borissov, F Bossu, M Botje, E Botta, E Braidot, P Braun-Munzinger, M Bregant, T Breitner, TA Broker, TA Browning, M Broz, R Brun, E Bruna, GE Bruno, D Budnikov, H Buesching, S Bufalino, P Buncic, O Busch, Z Buthelezi, D Caballero Orduna, D Caffarri, X Cai, H Caines, E Calvo Villar, P Camerini, V Canoa Roman, G Cara Romeo, F Carena, W Carena, N Carlin Filho, F Carminati, A Casanova Díaz, J Castillo Castellanos, JF Castillo Hernandez, EAR Casula, V Catanescu, C Cavicchioli, C Ceballos Sanchez, J Cepila
发表日期
2013/10
期刊
Physical Review C—Nuclear Physics
卷号
88
期号
4
页码范围
044909
出版商
American Physical Society
简介
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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