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

doi:10.1103/PhysRevC.81.044901

CORC > 近代物理研究所 > 中国科学院近代物理研究所 > 近代物理研究所知识存储（2010之前）

	Observation of pi(+)pi(-)pi(+)pi(-) photoproduction in ultraperipheral heavy-ion collisions at root s(NN)=200 GeV at the STAR detector
	Djawotho, P.19; Abelev, B. I.; Aggarwal, M. M.7; Ahammed, Z.23; Alakhverdyants, A. V.44; Anderson, B. D.45; Arkhipkin, D.32; Averichev, G. S.44; Balewski, J.49; Barnby, L. S.31
刊名	PHYSICAL REVIEW C
	2010-04-01
卷号	81 期号:4 页码:9
ISSN号	0556-2813
DOI	10.1103/PhysRevC.81.044901
英文摘要	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 agreement with the photoproduction data for the rho(0)(1700). We do not observe a corresponding peak in the pi(+)pi(-) final state and measure an upper limit for the ratio of the branching fractions of the rho(0)(1700) to pi(+)pi(-) and pi(+)pi(-)pi(+)pi(-) of 2.5% at 90% confidence level. The ratio of rho(0)(1700) and rho(0)(770) coherent production cross sections is measured to be 13.4 +/- 0.8(stat.) +/- 4.4(syst.)%.
资助项目	US DOE Office of Science ; US NSF ; Sloan Foundation ; DFG ; CNRS[CNRS/IN2P3] ; STFC ; EPSRC of the United Kingdom ; FAPESP CNPq of Brazil ; Ministry of Education and Science of the Russian Federation ; NNSFC ; CAS ; MoST ; MoE of China ; Czech Republic ; FOM and NWO of the Netherlands ; DAE ; CSIR of India ; Polish Ministry of Science and Higher Education ; Korean Research Foundation ; Ministry of Science, Education, and Sports of the Republic of Croatia ; Russian Ministry of Science and Technology and RosAtom of Russia
WOS关键词	HELICITY-COUPLING AMPLITUDES ; TIME PROJECTION CHAMBER ; GAMMA-GAMMA ; PHOTON ; PHYSICS ; MASS ; QUARKONIA
WOS研究方向	Physics
语种	英语
出版者	AMER PHYSICAL SOC
WOS记录号	WOS:000277209500056
资助机构	US DOE Office of Science ; US NSF ; Sloan Foundation ; DFG ; CNRS ; STFC ; EPSRC of the United Kingdom ; FAPESP CNPq of Brazil ; Ministry of Education and Science of the Russian Federation ; NNSFC ; CAS ; MoST ; MoE of China ; Czech Republic ; FOM and NWO of the Netherlands ; DAE ; CSIR of India ; Polish Ministry of Science and Higher Education ; Korean Research Foundation ; Ministry of Science, Education, and Sports of the Republic of Croatia ; Russian Ministry of Science and Technology and RosAtom of Russia
公开日期	2011-04-20
内容类型	期刊论文
源URL	[http://ir.imp.cas.cn/handle/113462/7897]
专题	近代物理研究所_近代物理研究所知识存储（2010之前）
通讯作者	Abelev, B. I.
作者单位	1.Univ Calif Davis, Davis, CA 95616 USA 2.USN Acad, Annapolis, MD 21402 USA 3.NIKHEF, Amsterdam, Netherlands 4.Univ Utrecht, Amsterdam, Netherlands 5.Ohio State Univ, Columbus, OH 43210 USA 6.Old Dominion Univ, Norfolk, VA 23529 USA 7.Panjab Univ, Chandigarh 160014, India 8.Penn State Univ, University Pk, PA 16802 USA 9.Inst High Energy Phys, Protvino, Russia 10.Purdue Univ, W Lafayette, IN 47907 USA
推荐引用方式 GB/T 7714	Djawotho, P.,Abelev, B. I.,Aggarwal, M. M.,et al. Observation of pi(+)pi(-)pi(+)pi(-) photoproduction in ultraperipheral heavy-ion collisions at root s(NN)=200 GeV at the STAR detector[J]. PHYSICAL REVIEW C,2010,81(4):9.
APA	Djawotho, P..,Abelev, B. I..,Aggarwal, M. M..,Ahammed, Z..,Alakhverdyants, A. V..,...&Zoulkarneeva, Y..(2010).Observation of pi(+)pi(-)pi(+)pi(-) photoproduction in ultraperipheral heavy-ion collisions at root s(NN)=200 GeV at the STAR detector.PHYSICAL REVIEW C,81(4),9.
MLA	Djawotho, P.,et al."Observation of pi(+)pi(-)pi(+)pi(-) photoproduction in ultraperipheral heavy-ion collisions at root s(NN)=200 GeV at the STAR detector".PHYSICAL REVIEW C 81.4(2010):9.