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Bulk properties of the system formed in Au+Au collisions at sNN =14.5 GeV at the BNL STAR detector

  • Author(s): Adam, J
  • Adamczyk, L
  • Adams, JR
  • Adkins, JK
  • Agakishiev, G
  • Aggarwal, MM
  • Ahammed, Z
  • Alekseev, I
  • Anderson, DM
  • Aparin, A
  • Aschenauer, EC
  • Ashraf, MU
  • Atetalla, FG
  • Attri, A
  • Averichev, GS
  • Bairathi, V
  • Barish, K
  • Behera, A
  • Bellwied, R
  • Bhasin, A
  • Bielcik, J
  • Bielcikova, J
  • Bland, LC
  • Bordyuzhin, IG
  • Brandenburg, JD
  • Brandin, AV
  • Butterworth, J
  • Caines, H
  • Calderón De La Barca Sánchez, M
  • Cebra, D
  • Chakaberia, I
  • Chaloupka, P
  • Chan, BK
  • Chang, FH
  • Chang, Z
  • Chankova-Bunzarova, N
  • Chatterjee, A
  • Chen, D
  • Chen, JH
  • Chen, X
  • Chen, Z
  • Cheng, J
  • Cherney, M
  • Chevalier, M
  • Choudhury, S
  • Christie, W
  • Crawford, HJ
  • Csanád, M
  • Daugherity, M
  • Dedovich, TG
  • Deppner, IM
  • Derevschikov, AA
  • Didenko, L
  • Dong, X
  • Drachenberg, JL
  • Dunlop, JC
  • Edmonds, T
  • Elsey, N
  • Engelage, J
  • Eppley, G
  • Esha, R
  • Esumi, S
  • Evdokimov, O
  • Ewigleben, J
  • Eyser, O
  • Fatemi, R
  • Fazio, S
  • Federic, P
  • Fedorisin, J
  • Feng, CJ
  • Feng, Y
  • Filip, P
  • Finch, E
  • Fisyak, Y
  • Francisco, A
  • Fulek, L
  • Gagliardi, CA
  • Galatyuk, T
  • Geurts, F
  • Gibson, A
  • Gopal, K
  • Grosnick, D
  • Guryn, W
  • Hamad, AI
  • Hamed, A
  • Harris, JW
  • He, S
  • He, W
  • He, X
  • Heppelmann, S
  • Heppelmann, S
  • Herrmann, N
  • Hoffman, E
  • Holub, L
  • Hong, Y
  • Horvat, S
  • Hu, Y
  • Huang, HZ
  • Huang, SL
  • Huang, T
  • et al.
Abstract

We report systematic measurements of bulk properties of the system created in Au+Au collisions at sNN=14.5 GeV recorded by the STAR detector at the Relativistic Heavy Ion Collider (RHIC). The transverse momentum spectra of π±, K±, and p(p) are studied at midrapidity (|y|<0.1) for nine centrality intervals. The centrality, transverse momentum (pT), and pseudorapidity (η) dependence of inclusive charged particle elliptic flow (v2), and rapidity-odd charged particles directed flow (v1) results near midrapidity are also presented. These measurements are compared with the published results from Au+Au collisions at other energies, and from Pb+Pb collisions at sNN=2.76 TeV. The results at sNN=14.5 GeV show similar behavior as established at other energies and fit well in the energy dependence trend. These results are important as the 14.5-GeV energy fills the gap in μB, which is of the order of 100 MeV, between sNN=11.5 and 19.6 GeV. Comparisons of the data with UrQMD and AMPT models show poor agreement in general.

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