Longitudinal Flow Of Protons From (2-8)A Gev Central Au Plus Au Collisions

J Klay,N N Ajitanand, J Alexander,Michael D Anderson,D Best,F P Brady,T Case,W Caskey, D Cebra, J L Chance,P Chung,B A Cole,K M Crowe,A Das,J E Draper,M L Gilkes,S Gushue,M Heffner, A Hirsch,E Hjort,L Huo, M Justice,Matt Kaplan,D Keane,J C Kintner,D Krofcheck, R Lacey,J Lauret,M A Lisa, Hanchen Liu,Y M Liu,R L Mcgrath,Z Milosevich, G Odyniec, D Olson, S Panitkin,C Pinkenburg,N Porile,G Rai,H G Ritter,J L Romero,R P Scharenberg,L S Schroeder, B Srivastava,N T B Stone,T J M Symons,Shanshan Wang, Richard L Wells,J Whitfield,T Wienold,R Witt,L Wood,W N Zhang

PHYSICAL REVIEW LETTERS（2002）

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摘要

Rapidity distributions of protons from central Au-197 + Au-197 collisions measured by the E895 Collaboration in the energy range from (2-8)A GeV at the Brookhaven AGS are presented. Longitudinal flow parameters derived using a thermal model including collective longitudinal expansion are extracted from these distributions. The results show an approximately linear increase in the longitudinal flow velocity, [betagamma](L), as a function of the logarithm of beam energy.

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elementary particles

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