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dc.contributor.authorSTAR Collaborationen_US
dc.date.accessioned2014-06-27T13:31:04Z
dc.date.available2014-06-27T13:31:04Z
dc.date.issued2009en_US
dc.identifier.citationSTAR Collaboration (2009). Observation of two-source interference in the photoproduction reaction AuAu_��AuAu�0. Physical Review Letters, 102(11), 112301(7).en_US
dc.identifier.issn1079-7114en_US
dc.identifier.issn0031-9007en_US
dc.identifier.urihttp://hdl.handle.net/10504/55816
dc.description.abstractIn 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 ρ0. The ρ0 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 ρ0 production. Since the ρ0 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.en_US
dc.publisherAmerican Physical Societyen_US
dc.titleObservation of two-source interference in the photoproduction reaction AuAu_��AuAu�0en_US
dc.typeJournal Articleen_US
dc.rights.holderAmerican Physical Societyen_US
dc.description.volume102en_US
dc.title.workPhysical Review Lettersen_US
dc.description.pages112301(7)en_US
dc.date.year2009en_US
dc.description.issue11en_US
dc.program.unitCollege of Arts and Sciencesen_US
dc.program.unitPhysicsen_US
dc.url.link1http://dx.doi.org/10.1103/PhysRevLett.102.112301en_US
dc.contributor.cuauthorCherney, Michael G.en_US
dc.contributor.cuauthorGorbunov, Yuri N.en_US
dc.contributor.cuauthorMcShane, Thomas S.en_US
dc.contributor.cuauthorSeger, Janet E.en_US
dc.contributor.cuauthorWaggoner, William T.en_US


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