Scaling properties of hyperon production in Au+Au collisons at {radical}{ovr s} {sub NN} = 200 GeV.
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 {radical}s{sub 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}{sub 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 < p{sub T} < 5 GeV/c in agreement with a scenario of hadron formation from constituent quark degrees of freedom.
- Research Organization:
- Argonne National Lab. (ANL), Argonne, IL (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC); National Science Foundation (NSF)
- DOE Contract Number:
- DE-AC02-06CH11357
- OSTI ID:
- 965754
- Report Number(s):
- ANL-HEP-PR-09-59; PRLTAO; TRN: US0903695
- Journal Information:
- Phys. Rev. Lett., Vol. 98, Issue 2007; ISSN 0031-9007
- Country of Publication:
- United States
- Language:
- ENGLISH
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