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Identified hadron compositions in p+p and Au+Au collisions at high transverse momenta at √s NN=200GeV

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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.; Spinka, H. M.] Argonne Natl Lab, Argonne, IL 60439 USA.
[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.; Fachini, P.; Lee, J. H.] Brookhaven Natl Lab, Upton, NY 11973 USA.
[Perkins, C.; Crawford, H. J.; Engelage, J.; Judd, E. G.] Univ Calif Berkeley, Berkeley, CA 94720 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:
072302
基金类别:
Offices of NP and HEP within the U.S. DOE Office of ScienceUnited States Department of Energy (DOE); U.S. NSFNational Science Foundation (NSF); Sloan FoundationAlfred P. Sloan Foundation; DFG cluster of excellence "Origin and Structure of the Universe" of Germany; STFC of the United KingdomUK Research & Innovation (UKRI)Science & Technology Facilities Council (STFC); CNRS/IN2P3Centre National de la Recherche Scientifique (CNRS); 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 of the Czech Republic; MSMT of the Czech RepublicMinistry of Education, Youth & Sports - Czech Republic; FOM of The NetherlandsFOM (The Netherlands); NWO of The NetherlandsNetherlands Organization for Scientific Research (NWO); DAEDepartment of Atomic Energy (DAE); DAE, DST; 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) [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 transverse momentum (p T≤15GeV/c) spectra of π ±, K ±, p, p̄, KS0, and ρ0 at midrapidity in p+p and Au+Au collisions at √s NN=200GeV. Perturbative QCD calculations are consistent with π ± spectra in p+p collisions but do not reproduce K and p(p̄) spectra. The observed decreasing antiparticle-to-particle ratios with increasing p T provide experimental evidence for varying quark and gluon jet contributions to high-p T hadron yields. The relative hadron abundances in Au+Au at p T 8GeV/c are measured to be similar to the p+p res...

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