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Strangeness Enhancement in Cu-Cu and Au-Au Collisions at root s(NN)=200 GeV

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成果类型:
期刊论文
作者:
Agakishiev, G.*;Aggarwal, M. M.;Ahammed, Z.;Alakhverdyants, A. V.;Alekseev, I.;...
通讯作者:
Agakishiev, G.
作者机构:
[Kechechyan, A.; Kizka, V.; Agakishiev, G.; Averichev, G. S.; Bunzarov, I.; Efimov, L. G.; Panebratsev, Y.; Alakhverdyants, A. V.; Shahaliev, E.; Rogachevskiy, O. V.; Fedorisin, J.; Zoulkarneeva, Y.; Tokarev, M.; Filip, P.; Lednicky, R.; Dedovich, T. G.; Vokal, S.] Joint Inst Nucl Res, Dubna 141980, Russia.
[Underwood, D. G.; Krueger, K.; Bridgeman, A.; Spinka, H. M.] Argonne Natl Lab, Argonne, IL 60439 USA.
[Jones, P. G.; Nelson, J. M.; Barnby, L. S.] Univ Birmingham, Birmingham, W Midlands, England.
[Ullrich, T.; Pile, P.; Lamont, M. A. C.; LeVine, M. J.; Ljubicic, T.; Xu, Z.; Ogawa, A.; Ruan, L.; Tang, A. H.; Videbaek, F.; Fine, V.; Fisyak, Y.; Beavis, D. R.; Lauret, J.; Bland, L. C.; Longacre, R. S.; Webb, J. C.; Sorensen, P.; Christie, W.; Arkhipkin, D.; Debbe, R. R.; Lebedev, A.; Burton, T. P.; Dunlop, J. C.; Gordon, A.; Landgraf, J. M.; Yip, K.; Didenko, L.; Guryn, W.; Mitrovski, M. K.; Van Buren, G.; Lee, J. H.] Brookhaven Natl Lab, Upton, NY 11973 USA.
[Mall, O. I.; Draper, J. E.; Cebra, D.; Brovko, S. G.; Sangaline, E.; Reed, R.; de la Barca Sanchez, M. Calderon; Romero, J. L.; Salur, S.; Haag, B.; Liu, H.] Univ Calif Davis, Davis, CA 95616 USA.
通讯机构:
[Agakishiev, G.] J
Joint Inst Nucl Res, Dubna 141980, Russia.
语种:
英文
期刊:
PHYSICAL REVIEW LETTERS
ISSN:
0031-9007
年:
2012
卷:
108
期:
7
页码:
072301
基金类别:
RHIC Operations Group; RCF at BNL; NERSC Center at LBNL; Open Science Grid consortium; Offices of NP; HEP within the U.S. DOE Office of ScienceUnited States Department of Energy (DOE); U.S. NSF, the Sloan Foundation; DFG cluster of excellence "Origin and Structure of the Universe" of Germany; CNRS/IN2P3Centre National de la Recherche Scientifique (CNRS); STFCUK Research & Innovation (UKRI)Science & Technology Facilities Council (STFC); EPSRC of the U.K.UK Research & Innovation (UKRI)Engineering & Physical Sciences Research Council (EPSRC); FAPESP CNPq of Brazil; Ministry of Ed. and Sci. of the Russian Federation; NNSFCNational Natural Science Foundation of China (NSFC); CASChinese Academy of Sciences; MoST; MoE of ChinaMinistry of Education, China; GA; MSMT of the Czech RepublicMinistry of Education, Youth & Sports - Czech Republic; FOMFOM (The Netherlands); NWO of the NetherlandsNetherlands Organization for Scientific Research (NWO); DAEDepartment of Atomic Energy (DAE); DSTDepartment of Science & Technology (India); CSIR of IndiaCouncil of Scientific & Industrial Research (CSIR) - India; Polish Ministry of Sci. and Higher Ed.; Korea Research FoundationKorea Research Foundation; Ministry of Sci., Ed. and Sports of the Rep. of Croatia; RosAtom of Russia; Science and Technology Facilities CouncilUK Research & Innovation (UKRI)Science & Technology Facilities Council (STFC) [ALICE, ST/J000140/1] Funding Source: researchfish
机构署名:
本校为其他机构
院系归属:
物理科学与技术学院
摘要:
We report new STAR measurements of midrapidity yields for the Λ, Λ¯, KS0, Ξ-, Ξ¯+, Ω-, Ω¯+ particles in Cu+Cu collisions at √sNN=200GeV, and midrapidity yields for the Λ, Λ¯, KS0 particles in Au+Au at √sNN= 200GeV. We show that, at a given number of participating nucleons, the production of strange hadrons is higher in Cu+Cu collisions than in Au+Au collisions at the same center-of-mass energy. We find that aspects of the enhancement factors for all particles can be described by a parametrization based on the fractio...

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