E-viri
Recenzirano
-
Abdallah, M S; Aboona, B E; Agakishiev, G; Aggarwal, I; Bairathi, V; Bellwied, R; Bhasin, A; Bielcik, J; Chan, B K; Chatterjee, A; Chen, D; Chen, X; Chevalier, M; Derevschikov, A A; Dhamija, A; Dong, X; Engelage, J; Fatemi, R; Fawzi, F M; Fedorisin, J; Gou, X; Harasty, M D; Harrison, H; Heppelmann, S; Huang, Y; Igo, G; Jacobs, W W; Jia, J; Kabana, S; Ke, H W; Keane, D; Kincses, D; Knospe, A G; Kochenda, L; Landgraf, J M; Li, C; Li, C; Li, W; Lin, T; Lin, Y; Liu, F; Liu, H; Liu, H; Liu, X; Longacre, R S; Ma, Y G; Markert, C; Mioduszewski, S; Mukherjee, A; Nagy, M; Nasim, Md; Nayak, K; Neff, D; Nemes, D B; Okorokov, V A; Pawlik, B; Perkins, C; Ponimatkin, G; Pruthi, N K; Ritter, H G; Rogachevskiy, O V; Salur, S; Sato, S; Schmidke, W B; Schweid, B R; Seyboth, P; Shanmuganathan, P V; Shao, T; Shen, D Y; Shou, Q Y; Spinka, H M; Stanislaus, T D S; Sun, X M; Sun, Y; Surrow, B; Tribedy, P; Truhlar, T; Upsal, I; Vanek, J; Vasiliev, A N; Wang, F; Wang, G; Wang, P; Wang, Y; Wieman, H; Witt, R; Wu, J; Wu, J; Wu, Y; Xi, B; Xu, H; Yan, G; Yang, C; Yang, Y; Ye, Z; Zhang, Y; Zhang, Y; Zhang, Y; Zhang, Z J; Zhang, Z
Physical review letters, 2022-May-20, Letnik: 128, Številka: 20Journal Article
We report cumulants of the proton multiplicity distribution from dedicated fixed-target Au+Au collisions at sqrts_{NN}=3.0 GeV, measured by the STAR experiment in the kinematic acceptance of rapidity (y) and transverse momentum (p_{T}) within -0.5<y<0 and 0.4<p_{T}<2.0 GeV/c. In the most central 0%-5% collisions, a proton cumulant ratio is measured to be C_{4}/C_{2}=-0.85±0.09 (stat)±0.82 (syst), which is 2σ below the Poisson baseline with respect to both the statistical and systematic uncertainties. The hadronic transport UrQMD model reproduces our C_{4}/C_{2} in the measured acceptance. Compared to higher energy results and the transport model calculations, the suppression in C_{4}/C_{2} is consistent with fluctuations driven by baryon number conservation and indicates an energy regime dominated by hadronic interactions. These data imply that the QCD critical region, if created in heavy-ion collisions, could only exist at energies higher than 3 GeV.
