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29 March 2024
 
  » arxiv » nucl-ex/0101002

 Article overview


Directed Flow of $Lambda$-Hyperons in 2-6 AGeV Au+Au Collisions
P.Chung ; N.N.Ajitanand ; J.M.Alexander ; M.Anderson ; D.Best ; F.P.Brady ; T.Case ; W.Caskey ; D.Cebra ; J.L.Chance ; B.Cole ; K.Crowe ; A.Das ; J.E.Draper ; M.L.Gilkes ; S.Gushue ; M.Heffner ; A.S.Hirsch ; E.L.Hjort ; L.Huo ; M.Justice ; M.Kaplan ; D.Keane ; J.C.Kintner ; J.Klay ; D.Krofcheck ; R.A.Lacey ; J.Lauret ; M.A.Lisa ; H.Liu ; Y.M.Liu ; R.McGrath ; Z.Milosevich ; G.Odyniec ; D.L.Olson ; S.Y.Panitkin ; C.Pinkenburg ; N.T.Porile ; G.Rai ; H.G.Ritter ; J.L.Romero ; R.Scharenberg ; L.Schroeder ; B.Srivastava ; N.T.BStone ; T.J.M.Symons ; T.Wienold ; R.Witt J.Whitfield ; L.Wood ; W.N.Zhang ;
Date 6 Dec 2000
Journal Phys.Rev.Lett. 86 (2001) 2533-2536
Subject nucl-ex
AbstractDirected flow measurements for $Lambda$-hyperons are presented and compared to those for protons produced in the same Au+Au collisions (2, 4, and 6 AGeV; $b < 5 - 6$ fm). The measurements indicate that $Lambda$-hyperons flow consistently in the same direction and with smaller magnitudes than those of protons. Such a strong positive flow [for $Lambda$s] has been predicted in calculations which include the influence of the $Lambda$-nucleon potential. The experimental flow ratio $Lambda$/p is in qualitative agreement with expectations ($sim 2/3$) from the quark counting rule at 2 AGeV but is found to decrease with increasing beam energy.
Source arXiv, nucl-ex/0101002
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