Observation of Two-Source Interference in the Photoproduction Reaction AuAu-->AuAu rho
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 ρ[superscript 0]. The ρ[superscript 0] production occurs in two well-separated (median impact paramet...
| Main Authors: | , , , , , , , , , , , |
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| Format: | Article |
| Language: | en_US |
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American Physical Society
2010
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| Online Access: | http://hdl.handle.net/1721.1/51784 https://orcid.org/0000-0002-5515-4563 https://orcid.org/0000-0001-5839-707X https://orcid.org/0000-0002-0031-1963 https://orcid.org/0000-0002-9107-6312 |
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| author | Surrow, Bernd Sakuma, Tai Leight, William Axel Kocoloski, Adam Philip Jones, Christopher LaDon Corliss, Ross Cameron Betancourt, Michael Joseph Balewski, Jan T. Surrow, Bernd Walker, Matthew H Redwine, Robert P Milner, Richard G Hoffman, Alan Michael |
| author2 | Massachusetts Institute of Technology. Department of Physics |
| author_facet | Massachusetts Institute of Technology. Department of Physics Surrow, Bernd Sakuma, Tai Leight, William Axel Kocoloski, Adam Philip Jones, Christopher LaDon Corliss, Ross Cameron Betancourt, Michael Joseph Balewski, Jan T. Surrow, Bernd Walker, Matthew H Redwine, Robert P Milner, Richard G Hoffman, Alan Michael |
| author_sort | Surrow, Bernd |
| collection | MIT |
| description | 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 ρ[superscript 0]. The ρ[superscript 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 ρ[superscript 0] production. Since the ρ[superscript 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. |
| first_indexed | 2024-09-23T14:44:06Z |
| format | Article |
| id | mit-1721.1/51784 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T14:44:06Z |
| publishDate | 2010 |
| publisher | American Physical Society |
| record_format | dspace |
| spelling | mit-1721.1/517842023-02-26T08:30:21Z Observation of Two-Source Interference in the Photoproduction Reaction AuAu-->AuAu rho Surrow, Bernd Sakuma, Tai Leight, William Axel Kocoloski, Adam Philip Jones, Christopher LaDon Corliss, Ross Cameron Betancourt, Michael Joseph Balewski, Jan T. Surrow, Bernd Walker, Matthew H Redwine, Robert P Milner, Richard G Hoffman, Alan Michael Massachusetts Institute of Technology. Department of Physics Massachusetts Institute of Technology. Laboratory for Nuclear Science Surrow, Bernd Walker, M. Surrow, Bernd Sakuma, Tai Redwine, Robert P. Milner, Richard G. Leight, William Axel Kocoloski, Adam Philip Jones, Christopher LaDon Hoffman, A. M. Corliss, Ross Cameron Betancourt, Michael Joseph Balewski, Jan T. Surrow, Bernd 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 ρ[superscript 0]. The ρ[superscript 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 ρ[superscript 0] production. Since the ρ[superscript 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. U.S. Department of Energy, Office of Science Swiss National Science Foundation Korea Science and Engineering Foundation Polish State Committee for Scientific Research DAE, DST, and CSIR of the Government of India FOM of The Netherlands IRP and GA of the Czech Republic NNSFC, CAS, MoST, and MoE of China Russian Ministry of Science and Technology FAPESP of Brazil STFC and EPSRC of the United Kingdom CNRS/IN2P3, RA, RPL, and EMN of France DFG Excellence Cluster EXC153 of Germany Sloan Foundation U.S. National Science Foundation 2010-02-21T15:44:20Z 2010-02-21T15:44:20Z 2009-03 2008-12 Article http://purl.org/eprint/type/JournalArticle 0031-9007 http://hdl.handle.net/1721.1/51784 STAR Collaboration et al. “Observation of Two-Source Interference in the Photoproduction Reaction AuAu-->AuAu rho.” Physical Review Letters 102.11 (2009): 112301. © 2009 The American Physical Society. https://orcid.org/0000-0002-5515-4563 https://orcid.org/0000-0001-5839-707X https://orcid.org/0000-0002-0031-1963 https://orcid.org/0000-0002-9107-6312 en_US http://dx.doi.org/10.1103/PhysRevLett.102.112301 Physical Review Letters Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. application/pdf American Physical Society APS |
| spellingShingle | Surrow, Bernd Sakuma, Tai Leight, William Axel Kocoloski, Adam Philip Jones, Christopher LaDon Corliss, Ross Cameron Betancourt, Michael Joseph Balewski, Jan T. Surrow, Bernd Walker, Matthew H Redwine, Robert P Milner, Richard G Hoffman, Alan Michael Observation of Two-Source Interference in the Photoproduction Reaction AuAu-->AuAu rho |
| title | Observation of Two-Source Interference in the Photoproduction Reaction AuAu-->AuAu rho |
| title_full | Observation of Two-Source Interference in the Photoproduction Reaction AuAu-->AuAu rho |
| title_fullStr | Observation of Two-Source Interference in the Photoproduction Reaction AuAu-->AuAu rho |
| title_full_unstemmed | Observation of Two-Source Interference in the Photoproduction Reaction AuAu-->AuAu rho |
| title_short | Observation of Two-Source Interference in the Photoproduction Reaction AuAu-->AuAu rho |
| title_sort | observation of two source interference in the photoproduction reaction auau auau rho |
| url | http://hdl.handle.net/1721.1/51784 https://orcid.org/0000-0002-5515-4563 https://orcid.org/0000-0001-5839-707X https://orcid.org/0000-0002-0031-1963 https://orcid.org/0000-0002-9107-6312 |
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