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Scaling properties of hyperon production in Au+Au collisions at square root [sNN]=200 GeV |
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| Authors: | Adams J Aggarwal M M Ahammed Z Amonett J Anderson B D Anderson M Arkhipkin D Averichev G S Bai Y Balewski J Barannikova O Barnby L S Baudot J Bekele S Belaga V V Bellingeri-Laurikainen A Bellwied R Bezverkhny B I Bhardwaj S Bhasin A Bhati A K Bichsel H Bielcik J Bielcikova J Bland L C Blyth C O Blyth S-L Bonner B E Botje M Bouchet J Brandin A V Bravar A Bystersky M Cadman R V Cai X Z Caines H Calderón de la Barca Sánchez M Castillo J Catu O Cebra D Chajecki Z Chaloupka P Chattopadhyay S Chen H F Chen J H Chen Y Cheng J Cherney M Chikanian A Choi H A Christie W Coffin J P Cormier T M |
| Institution: | University of Birmingham, Birmingham, United Kingdom. |
| Abstract: | We present the scaling properties of Lambda, Xi, and Omega in midrapidity Au+Au collisions at the Brookhaven National Laboratory Relativistic Heavy Ion Collider at sqrts_{NN}]=200 GeV. The yield of multistrange baryons per participant nucleon increases from peripheral to central collisions more rapidly than that of Lambda, indicating an increase of the strange-quark density of the matter produced. The strange phase-space occupancy factor gamma_{s} approaches unity for the most central collisions. Moreover, the nuclear modification factors of p, Lambda, and Xi are consistent with each other for 2 |
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