Evolution of the differential transverse momentum correlation function with centrality in Au plus Au collisions at root s(NN)=200 GeV Academic Article uri icon

abstract

  • We present first measurements of the evolution of the differential transverse momentum correlation function, C, with collision centrality in Au. +. Au interactions at sNN=200 GeV. This observable exhibits a strong dependence on collision centrality that is qualitatively similar to that of number correlations previously reported. We use the observed longitudinal broadening of the near-side peak of C with increasing centrality to estimate the ratio of the shear viscosity to entropy density, /s, of the matter formed in central Au. +. Au interactions. We obtain an upper limit estimate of /s that suggests that the produced medium has a small viscosity per unit entropy. 2011 Elsevier B.V.

published proceedings

  • PHYSICS LETTERS B

altmetric score

  • 0.25

author list (cited authors)

  • Agakishiev, G., Aggarwal, M. M., Ahammed, Z., Alakhverdyants, A. V., Alekseev, I., Alford, J., ... Zoulkarneeva, Y.

citation count

  • 31

complete list of authors

  • Agakishiev, G||Aggarwal, MM||Ahammed, Z||Alakhverdyants, AV||Alekseev, I||Alford, J||Anderson, BD||Anson, CD||Arkhipkin, D||Averichev, GS||Balewski, J||Beavis, DR||Behera, NK||Bellwied, R||Betancourt, MJ||Betts, RR||Bhasin, A||Bhati, AK||Bichsel, H||Bielcik, J||Bielcikova, J||Biritz, B||Bland, LC||Bordyuzhin, IG||Borowski, W||Bouchet, J||Braidot, E||Brandin, AV||Bridgeman, A||Brovko, SG||Bruna, E||Bueltmann, S||Bunzarov, I||Burton, TP||Cai, XZ||Caines, H||Sanchez, M Calderon de la Barca||Cebra, D||Cendejas, R||Cervantes, MC||Chajecki, Z||Chaloupka, P||Chattopadhyay, S||Chen, HF||Chen, JH||Chen, JY||Chen, L||Cheng, J||Cherney, M||Chikanian, A||Choi, KE||Christie, W||Chung, P||Codrington, MJM||Corliss, R||Cramer, JG||Crawford, HJ||Leyva, A Davila||De Silva, LC||Debbe, RR||Dedovich, TG||Derevschikov, AA||Derradi de Souza, R||Didenko, L||Djawotho, P||Dogra, SM||Dong, X||Drachenberg, JL||Draper, JE||Dunlop, JC||Efimov, LG||Elnimr, M||Engelage, J||Eppley, G||Estienne, M||Eun, L||Evdokimovk, O||Fatemi, R||Fedorisin,

publication date

  • October 2011