Momentum distributions of light mass fragments in Si-nucleus collisions at 14.6 GeV/nucleon

Moorthy S Muthuswamy ,R Lacasse,N Xu,D Makowiecki,Y Zhang,N Herrmann,J Dee,G David,S Mccorkle,O Dietzsch,J Sandweiss,K Jayananda,D Lissauer,J Barrette,J R Hall ,Z Zhang ,W J Llope ,C L Woody ,E M Takagui ,Thomas Michael Cormier ,B S Kumar ,J Stachel ,T Ludlam ,D Kraus ,S K Mark ,R Hogue ,J Simon‐Gillo ,R Bellwied ,R Majka ,F S Rotondo ,D Wolfe ,M Fatyga ,D U J Sonnadara ,W Cleland ,P Braun‐Munzinger ,T K Hemmick ,B Hong ,K Wolf ,C Winter ,E O’brien ,V Polychronakos ,D Fox ,L Waters ,N C Da Silva ,C Pruneau ,T G Throwe ,H Takai ,S V Greene ,J T Mitchell ,Eliana Aparecida De Rezende Duek ,C Zou

doi:10.1016/0375-9474(92)90590-g

Abstract

Transverse momentum distributions of light mass beam rapidity fragments 1H, 3He, and 4He in reactions of 28 Si + Al, Cu and Pb are presented. The widths of the distributions are found to increase with increasing projectile-target overlap. This dependence is not consistent with the observed distributions being associated with the Fermi momentum of the nucleons in the projectile nucleus.

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