Abstract
Momentum spectra of charged pions over nearly full rapidity coverage from target to beam rapidity have been extracted from 0-5% most central Au +Au collisions in the beam energy range from 2A to 8A GeV by the E895 experiment. Using a thermal parametrization to fit the transverse mass spectra, rapidity density distributions are extracted. The observed spectra are compared with predictions from the RQMD version 2.3 cascade model and also to a thermal model including longitudinal flow. The total 4pi yields of the charged pions are used to infer an initial-state entropy produced in the collisions.
Published in:
Physical Review C 68,5 (2003) 054905;
Link to original published article:
http://dx.doi.org/10.1103/PhysRevC.68.054905
Keywords
heavy-ion collisions;; nucleus-nucleus collisions;; hadronic matter;; excitation-function;; particle-production;; au+au collisions;; s+s collisions;; energy;; spectra;; flow
Date of Version
January 2003
Recommended Citation
Klay, J. L.; Ajitanand, N. N.; Alexander, J. M.; Anderson, M. G.; Best, D.; Brady, F. P.; Case, T.; Caskey, W.; Cebra, D.; Chance, J. L.; Chung, P.; Cole, B.; Crowe, K.; Das, A. C.; Draper, J. E.; Gilkes, M. L.; Gushue, S.; Heffner, M.; Hirsch, A. S.; Hjort, E. L.; Huo, L.; Justice, M.; Kaplan, M.; Keane, D.; Kintner, J. C.; Krofcheck, D.; Lacey, R. A.; Lauret, J.; Law, C.; Lisa, M. A.; Liu, H.; Liu, Y. M.; McGrath, R.; Milosevich, Z.; Odyniec, G.; Olson, D. L.; Panitkin, S. Y.; Pinkenburg, C.; Porile, N. T.; Rai, G.; Ritter, H. G.; Romero, J. L.; Scharenberg, R.; Srivastava, B.; Stone, N. T. B.; Symons, T. J. M.; Wang, S.; Wells, R.; Whitfield, J.; Wienold, T.; Witt, R.; Wood, L.; and Zhang, W. N., "Charged pion production in 2A to 8A GeV central Au plus Au collisions" (2003). Department of Physics and Astronomy Faculty Publications. Paper 497.
https://docs.lib.purdue.edu/physics_articles/497