ITA
ENG

Elliptic flow: Transition from out-of-plane to in-plane emission in Au plus Au collisions

Authors

Pinkenburg, C Ajitanand, NN Alexander, JM Anderson, M Best, D Brady, FP Case, T Caskey, W Cebra, D Chance, JL Chung, P Cole, B Crowe, K Das, AC Draper, JE Elmaani, A Gilkes, ML Gushue, S Heffner, M Hirsch, AS Hjort, EL Huo, L Justice, M Kaplan, M Keane, D Kintner, JC Klay, J Krofcheck, D Lacey, RA Lauret, J Law, C Lisa, MA Liu, H Liu, YM McGrath, R Milosevich, Z Odyniec, G Olson, DL Panitkin, SY Porile, NT Rai, G Ritter, HG Romero, JL Scharenberg, R Schroeder, L Srivastava, B Stone, NTB Symons, TJM Whitfield, J Wienold, T Witt, R Wood, L Zhang, WN

Citation

C. Pinkenburg et al., Elliptic flow: Transition from out-of-plane to in-plane emission in Au plus Au collisions, PHYS REV L, 83(7), 1999, pp. 1295-1298

Citations number

Categorie Soggetti

Physics

Journal title

PHYSICAL REVIEW LETTERS

ISSN journal

00319007 → ACNP

Volume

Issue

Year of publication

1999

Pages

1295 - 1298

Database

ISI

SICI code

0031-9007(19990816)83:7<1295:EFTFOT>2.0.ZU;2-9

Abstract

We have measured the proton elliptic flow excitation function for the Au Au system spanning the beam energy range (2-8)A GeV. The excitation functio n shows a transition from negative to positive elliptic flow at a beam ener gy, E-tr similar to 4A GeV. Detailed comparisons with calculations from a r elativistic Boltzmann equation are presented. The comparisons suggest a sof tening of the nuclear equation of state from a stiff form (K similar to 380 MeV) at low beam energies (E-beam less than or equal to 2A GeV) to a softe r form (K similar to 210 MeV) at higher energies (E-beam 4A GeV) where the calculated baryon density rho similar to 4 rho(0).