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29 March 2024
 
  » pubmed » pmid11289973

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Directed flow of lambda hyperons in (2-6 )A GeV Au+Au collisions
P Chung ; N N Ajitan ; 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 Stone ; T J Symons ; T Wienold ; R Witt ; J Whitfield ; L Wood ; W N Zhang ; ;
Date 19 Mar 2001
Journal Phys Rev Lett, 86 (12), 2533-6
AbstractDirected flow measurements for Lambda hyperons are presented and compared to those for protons produced in the same Au+Au collisions (2A, 4A, and 6A GeV; b<5-6 fm). The measurements indicate that Lambda hyperons flow consistently in the same direction but with smaller magnitudes. A strong positive flow [for Lambdas] 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 (approximately 2/3) from the quark counting rule at 2A GeV but is found to decrease with increasing beam energy.
Source PubMed, pmid11289973
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