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Title: Scaling properties of hyperon production in Au+Au collisons at {radical}{ovr s} {sub NN} = 200 GeV.

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 {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.

Authors:
; ; ; ; ; ; ; ; ; ; ; ; ; ; ;
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC); National Science Foundation (NSF)
OSTI Identifier:
965754
Report Number(s):
ANL-HEP-PR-09-59
Journal ID: ISSN 0031-9007; PRLTAO; TRN: US0903695
DOE Contract Number:
DE-AC02-06CH11357
Resource Type:
Journal Article
Resource Relation:
Journal Name: Phys. Rev. Lett.; Journal Volume: 98; Journal Issue: 2007
Country of Publication:
United States
Language:
ENGLISH
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; 74 ATOMIC AND MOLECULAR PHYSICS; BARYONS; BNL; DEGREES OF FREEDOM; HADRONS; HEAVY IONS; HYPERONS; MODIFICATIONS; NUCLEONS; PHASE SPACE; PRODUCTION; QUARKS

Citation Formats

Cadman, R. V., Krueger, K., Spinka, H. M., McClain, C. J., Underwood, D. G., Adams, J., Aggarwal, M. M., Ahammed, Z., Amonett, J., Anderson, M., STAR Collaboration, High Energy Physics, Univ. of Birmingham, Panjab Univ., Variable Energy Cyclotron Centre, and Kent State Univ.. Scaling properties of hyperon production in Au+Au collisons at {radical}{ovr s} {sub NN} = 200 GeV.. United States: N. p., 2007. Web. doi:10.1103/PhysRevLett.98.062301.
Cadman, R. V., Krueger, K., Spinka, H. M., McClain, C. J., Underwood, D. G., Adams, J., Aggarwal, M. M., Ahammed, Z., Amonett, J., Anderson, M., STAR Collaboration, High Energy Physics, Univ. of Birmingham, Panjab Univ., Variable Energy Cyclotron Centre, & Kent State Univ.. Scaling properties of hyperon production in Au+Au collisons at {radical}{ovr s} {sub NN} = 200 GeV.. United States. doi:10.1103/PhysRevLett.98.062301.
Cadman, R. V., Krueger, K., Spinka, H. M., McClain, C. J., Underwood, D. G., Adams, J., Aggarwal, M. M., Ahammed, Z., Amonett, J., Anderson, M., STAR Collaboration, High Energy Physics, Univ. of Birmingham, Panjab Univ., Variable Energy Cyclotron Centre, and Kent State Univ.. Mon . "Scaling properties of hyperon production in Au+Au collisons at {radical}{ovr s} {sub NN} = 200 GeV.". United States. doi:10.1103/PhysRevLett.98.062301.
@article{osti_965754,
title = {Scaling properties of hyperon production in Au+Au collisons at {radical}{ovr s} {sub NN} = 200 GeV.},
author = {Cadman, R. V. and Krueger, K. and Spinka, H. M. and McClain, C. J. and Underwood, D. G. and Adams, J. and Aggarwal, M. M. and Ahammed, Z. and Amonett, J. and Anderson, M. and STAR Collaboration and High Energy Physics and Univ. of Birmingham and Panjab Univ. and Variable Energy Cyclotron Centre and Kent State Univ.},
abstractNote = {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.},
doi = {10.1103/PhysRevLett.98.062301},
journal = {Phys. Rev. Lett.},
number = 2007,
volume = 98,
place = {United States},
year = {Mon Jan 01 00:00:00 EST 2007},
month = {Mon Jan 01 00:00:00 EST 2007}
}