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Observation of pi(+)pi(-)pi(+)pi(-) photoproduction in ultraperipheral heavy-ion collisions at root s(NN)=200 GeV at the STAR detector

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成果类型:
期刊论文
作者:
Abelev, B. I.*;Aggarwal, M. M.;Ahammed, Z.;Alakhverdyants, A. V.;Anderson, B. D.;...
通讯作者:
Abelev, B. I.
作者机构:
[Iordanova, A.; Hofman, D. J.; Suarez, M. C.; Abelev, B. I.; Evdokimov, O.; Hollis, R. S.; Kauder, K.; Garcia-Solis, E. J.; Betts, R. R.] Univ Illinois, Chicago, IL 60607 USA.
[Underwood, D. G.; Krueger, K.; Bridgeman, A.; Spinka, H. M.] Argonne Natl Lab, Argonne, IL 60439 USA.
[Jones, P. G.; Elhalhuli, E.; Burton, T. P.; Nelson, J. M.; Barnby, L. S.] Univ Birmingham, Birmingham, W Midlands, England.
[Pile, P.; Xu, Z.; Ogawa, A.; Ruan, L.; Tang, A. H.; Fine, V.; Fisyak, Y.; Beavis, D. R.; Sorensen, P.; Christie, W.; Lebedev, A.; Perevoztchikov, V.; Gordon, A.; Landgraf, J. M.; DePhillips, M.; Yip, K.; Didenko, L.; Guryn, W.; Van Buren, G.; Fachini, P.; Ullrich, T.; Lamont, M. A. C.; LeVine, M. J.; Ljubicic, T.; Hallman, T. J.; Videbaek, F.; Lauret, J.; Bland, L. C.; Chung, S. U.; Okada, H.; Longacre, R. S.; Webb, J. C.; Arkhipkin, D.; Debbe, R. R.; Dunlop, J. C.; Love, W. A.; Lee, J. H.] Brookhaven Natl Lab, Upton, NY 11973 USA.
[Perkins, C.; Engelage, J.; Judd, E. G.; Ng, M. J.; Crawford, H. J.] Univ Calif Berkeley, Berkeley, CA 94720 USA.
通讯机构:
[Abelev, B. I.] U
Univ Illinois, Chicago, IL 60607 USA.
语种:
英文
期刊:
PHYSICAL REVIEW C
ISSN:
2469-9985
年:
2010
卷:
81
期:
4
基金类别:
US DOE Office of ScienceUnited States Department of Energy (DOE); US NSFNational Science Foundation (NSF); Sloan FoundationAlfred P. Sloan Foundation; DFGGerman Research Foundation (DFG)European Commission; CNRSCentre National de la Recherche Scientifique (CNRS)European Commission [CNRS/IN2P3]; STFCUK Research & Innovation (UKRI)Science & Technology Facilities Council (STFC); EPSRC of the United KingdomUK Research & Innovation (UKRI)Engineering & Physical Sciences Research Council (EPSRC); FAPESP CNPq of Brazil; Ministry of Education and Science of the Russian FederationMinistry of Education and Science, Russian Federation; NNSFCNational Natural Science Foundation of China (NSFC); CASChinese Academy of Sciences; MoST; MoE of ChinaMinistry of Education, China; Czech RepublicCzech Republic Government; FOM and NWO of the NetherlandsFOM (The Netherlands); DAEDepartment of Atomic Energy (DAE); CSIR of IndiaCouncil of Scientific & Industrial Research (CSIR) - India; Polish Ministry of Science and Higher EducationMinistry of Science and Higher Education, Poland; Korean Research FoundationKorea Research Foundation; Ministry of Science, Education, and Sports of the Republic of CroatiaMinistry of Science, Education and Sports, Republic of Croatia; Russian Ministry of Science and Technology and RosAtom of Russia; Science and Technology Facilities CouncilUK Research & Innovation (UKRI)Science & Technology Facilities Council (STFC) [PP/F001061/1] Funding Source: researchfish
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本校为其他机构
院系归属:
物理科学与技术学院
摘要:
We present a measurement of pi(+)pi(-)pi(+)pi(-) photonuclear production in ultraperipheral Au-Au collisions at root s(NN) = 200 GeV from the STAR experiment. The pi(+)pi(-)pi(+)pi(-) final states are observed at low transverse momentum and are accompanied by mutual nuclear excitation of the beam particles. The strong enhancement of the production cross section at low transverse momentum is consistent with coherent photoproduction. The pi(+)pi(-)pi(+)pi(-) invariant mass spectrum of the coherent events exhibits a broad peak around 1540 +/- 40 MeV/c(2) with a width of 570 +/- 60 MeV/c(2), in ag...

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