Collision-energy dependence of <i>p<sub>t</sub></i> correlations in Au plus Au collisions at energies available at the BNL Relativistic Heavy Ion Collider



Adam, J, Adamczyk, L, Adams, JR, Adkins, JK, Agakishiev, G, Aggarwal, MM, Ahammed, Z, Alekseev, I, Anderson, DM, Aoyama, R
et al (show 336 more authors) (2019) Collision-energy dependence of <i>p<sub>t</sub></i> correlations in Au plus Au collisions at energies available at the BNL Relativistic Heavy Ion Collider. PHYSICAL REVIEW C, 99 (4). 044918-. ISSN 2469-9985, 2469-9993

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Abstract

We present two-particle pt correlations as a function of event centrality for Au+Au collisions at sNN=7.7, 11.5, 14.5, 19.6, 27, 39, 62.4, and 200 GeV at the Relativistic Heavy Ion Collider using the STAR detector. These results are compared to previous measurements from CERES at the Super Proton Synchrotron and from ALICE at the Large Hadron Collider. The data are compared with UrQMD model calculations and with a model based on a Boltzmann-Langevin approach incorporating effects from thermalization. The relative dynamical correlations for Au+Au collisions at sNN=200 GeV show a power-law dependence on the number of participant nucleons and agree with the results for Pb+Pb collisions at sNN=2.76TeV from ALICE. As the collision energy is lowered from sNN=200 to 7.7 GeV, the centrality dependence of the relative dynamical correlations departs from the power-law behavior observed at the higher collision energies. In central collisions, the relative dynamical correlations increase with collision energy up to sNN=200 GeV in contrast to previous measurements that showed little dependence on the collision energy.

Item Type: Article
Uncontrolled Keywords: 5106 Nuclear and Plasma Physics, 5107 Particle and High Energy Physics, 51 Physical Sciences
Depositing User: Symplectic Admin
Date Deposited: 16 Jan 2020 09:02
Last Modified: 07 Dec 2024 07:11
DOI: 10.1103/PhysRevC.99.044918
Related URLs:
URI: https://livrepository.liverpool.ac.uk/id/eprint/3070715