Authors
B Abelev, Jaroslav Adam, Dagmar Adamova, Andrew Marshall Adare, Madan Mohan Aggarwal, G Aglieri Rinella, Michelangelo Agnello, Andras Gabor Agocs, Andrea Agostinelli, Zubayer Ahammed, N Ahmad, A Ahmad Masoodi, I Ahmed, SU Ahn, SA Ahn, I Aimo, S Aiola, M Ajaz, A Akindinov, D Aleksandrov, B Alessandro, D Alexandre, A Alici, A Alkin, J Alme, T Alt, V Altini, S Altinpinar, I Altsybeev, C Alves Garcia Prado, C Andrei, A Andronic, V Anguelov, J Anielski, T Antičić, F Antinori, P Antonioli, L Aphecetche, H Appelshäuser, S Arcelli, N Armesto, R Arnaldi, T Aronsson, IC Arsene, M Arslandok, A Augustinus, R Averbeck, TC Awes, MD Azmi, M Bach, A Badalà, YW Baek, R Bailhache, V Bairathi, R Bala, A Baldisseri, F Baltasar Dos Santos Pedrosa, J Bán, 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, PC Batzing, C Baumann, IG Bearden, H Beck, NK Behera, I Belikov, FRANCESCA Bellini, R Bellwied, E Belmont-Moreno, G Bencedi, S Beole, I Berceanu, A Bercuci, Y Berdnikov, D Berenyi, AAE Bergognon, RA Bertens, D Berzano, L Betev, A Bhasin, AK Bhati, J Bhom, L Bianchi, N Bianchi, C Bianchin, J Bielčík, J Bielčíková, A Bilandzic, S Bjelogrlic, F Blanco, D Blau, C Blume, F Bock, A Bogdanov, H Bøggild, M Bogolyubsky, L Boldizsár, M Bombara, J Book, H Borel, A Borissov, J Bornschein, M Botje, E Botta, S Böttger, 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 Caffarri, X Cai, H Caines, A Caliva, E Calvo Villar, P Camerini, V Canoa Roman, G Cara Romeo, F Carena, W Carena, F Carminati, A Casanova Díaz, J Castillo Castellanos, EAR Casula, V Catanescu, C Cavicchioli, C Ceballos Sanchez, J Cepila, P Cerello
Publication date
2014/1/20
Journal
Physics Letters B
Volume
728
Pages
216-227
Publisher
North-Holland
Description
The production of Ξ− and Ω− baryons and their anti-particles in Pb–Pb collisions at s NN= 2.76 TeV has been measured using the ALICE detector. The transverse momentum spectra at mid-rapidity (| y|< 0.5) for charged Ξ and Ω hyperons have been studied in the range 0.6< p T< 8.0 GeV/c and 1.2< p T< 7.0 GeV/c, respectively, and in several centrality intervals (from the most central 0–10% to the most peripheral 60–80% collisions). These spectra have been compared with the predictions of recent hydrodynamic models. In particular, the Kraków and EPOS models give a satisfactory description of the data, with the latter covering a wider p T range. Mid-rapidity yields, integrated over p T, have been determined. The hyperon-to-pion ratios are similar to those at RHIC: they rise smoothly with centrality up to< N part>∼ 150 and saturate thereafter. The enhancements (yields per participant nucleon relative to those in pp …
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