Radial flow in Au+Au collisions at E=(0.25-1.15)A GeV.
/ Authors
Lisa, Albergo, Bieser, Brady, Caccia, Cebra, Chacón, Chance, Choi, Costa
and 34 more authors
Elliott, Gilkes, Hauger, Hirsch, Hjort, Insolia, Justice, Keane, Kintner, Matís, McMahan, McParland, Olson, Partlan, Porile, Potenza, Rai, Rasmussen, Ritter, Romanski, Romero, Russo, Scharenberg, Scott, Shao, Srivastava, Symons, Tincknell, Tuvé, Wang, Warren, Westfall, Wieman, Wolf
/ Abstract
A systematic study of energy spectra for light particles emitted at midrapidity from Au+Au collisions at {ital E}= (0.25--1.15){ital A} GeV reveals a significant nonthermal component consistent with a collective radial flow. This component is evaluated as a function of bombarding energy and event centrality. Comparisons to quantum molecular dynamics and Boltzmann-Uehling-Uhlenbeck models are made for different equations of state.
Journal: Physical review letters