Observation of Two-Source Interference in the Photoproduction Reaction AuAu -> AuAu rho(0)

doi:10.1103/PhysRevLett.102.112301

	Observation of Two-Source Interference in the Photoproduction Reaction AuAu -> AuAu rho(0)
	Abelev, B. I.9; Aggarwal, M. M.32; Ahammed, Z.48; Anderson, B. D.19; Arkhipkin, D.13; Averichev, G. S.12; Bai, Y.28,29; Balewski, J.23; Barannikova, O.9; Barnby, L. S.2
刊名	PHYSICAL REVIEW LETTERS
	2009-03-20
卷号	102 页码:7
ISSN号	0031-9007
DOI	10.1103/PhysRevLett.102.112301
英文摘要	In ultraperipheral relativistic heavy-ion collisions, a photon from the electromagnetic field of one nucleus can fluctuate to a quark-antiquark pair and scatter from the other nucleus, emerging as a rho(0). The rho(0) production occurs in two well-separated (median impact parameters of 20 and 40 F for the cases considered here) nuclei, so the system forms a two-source interferometer. At low transverse momenta, the two amplitudes interfere destructively, suppressing rho(0) production. Since the rho(0) decays before the production amplitudes from the two sources can overlap, the two-pion system can only be described with an entangled nonlocal wave function, and is thus an example of the Einstein-Podolsky-Rosen paradox. We observe this suppression in 200 GeV per nucleon-pair gold-gold collisions. The interference is 87%+/- 5%(stat.)+/- 8%(syst.) of the expected level. This translates into a limit on decoherence due to wave function collapse or other factors of 23% at the 90% confidence level.
资助项目	U. S. DOE Office of Science ; U. S. NSF ; Sloan Foundation ; DFG Excellence Cluster EXC153 of Germany ; CNRS/IN2P3 ; RA ; RPL ; EMN of France ; STFC ; EPSRC ; FAPESP of Brazil ; Russian Ministry of Science and Technology ; NNSFC ; CAS ; MoST ; MoE of China ; IRP ; GA of the Czech Republic ; FOM of The Netherlands ; DAE ; DST ; CSIR of the Government of India ; Swiss NSF ; Polish State Committee for Scientific Research ; Korea Science and Engineering Foundation
WOS关键词	HEAVY-ION COLLISIONS ; TIME PROJECTION CHAMBER ; COLLIDERS ; PHYSICS ; PHOTON
WOS研究方向	Physics
语种	英语
出版者	AMER PHYSICAL SOC
WOS记录号	WOS:000264380200020
资助机构	U. S. DOE Office of Science ; U. S. NSF ; Sloan Foundation ; DFG Excellence Cluster EXC153 of Germany ; CNRS/IN2P3 ; RA ; RPL ; EMN of France ; STFC ; EPSRC ; FAPESP of Brazil ; Russian Ministry of Science and Technology ; NNSFC ; CAS ; MoST ; MoE of China ; IRP ; GA of the Czech Republic ; FOM of The Netherlands ; DAE ; DST ; CSIR of the Government of India ; Swiss NSF ; Polish State Committee for Scientific Research ; Korea Science and Engineering Foundation
内容类型	期刊论文
源URL	[http://119.78.100.186/handle/113462/31466]
专题	中国科学院近代物理研究所
通讯作者	Abelev, B. I.
作者单位	1.Argonne Natl Lab, Argonne, IL 60439 USA 2.Univ Birmingham, Birmingham, W Midlands, England 3.Brookhaven Natl Lab, Upton, NY 11973 USA 4.Univ Calif Berkeley, Berkeley, CA 94720 USA 5.Univ Calif Davis, Davis, CA 95616 USA 6.Univ Calif Los Angeles, Los Angeles, CA 90095 USA 7.Univ Estadual Campinas, Sao Paulo, Brazil 8.Carnegie Mellon Univ, Pittsburgh, PA 15213 USA 9.Univ Illinois, Chicago, IL 60607 USA 10.Creighton Univ, Omaha, NE 68178 USA
推荐引用方式 GB/T 7714	Abelev, B. I.,Aggarwal, M. M.,Ahammed, Z.,et al. Observation of Two-Source Interference in the Photoproduction Reaction AuAu -> AuAu rho(0)[J]. PHYSICAL REVIEW LETTERS,2009,102:7.
APA	Abelev, B. I..,Aggarwal, M. M..,Ahammed, Z..,Anderson, B. D..,Arkhipkin, D..,...&Zuo, J. X..(2009).Observation of Two-Source Interference in the Photoproduction Reaction AuAu -> AuAu rho(0).PHYSICAL REVIEW LETTERS,102,7.
MLA	Abelev, B. I.,et al."Observation of Two-Source Interference in the Photoproduction Reaction AuAu -> AuAu rho(0)".PHYSICAL REVIEW LETTERS 102(2009):7.