Search for the Photoexcitation of Exotic Mesons in the pi(+)pi(+)pi(-) System
A search for exotic mesons in the pi+pi+pi- system photoproduced by the charge exchange reaction γp→pi+pi+pi-(n) was carried out by the CLAS Collaboration at Jefferson Lab. A tagged-photon beam with energies in the 4.8 to 5.4 GeV range, produced through bremsstrahlung from a 5.744 GeV electron beam,...
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| Format: | Article |
| Language: | en_US |
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American Physical Society
2011
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| Online Access: | http://hdl.handle.net/1721.1/65363 |
| _version_ | 1811081216658505728 |
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| author | Skabelin, Alexander V. |
| author2 | Massachusetts Institute of Technology. Department of Physics |
| author_facet | Massachusetts Institute of Technology. Department of Physics Skabelin, Alexander V. |
| author_sort | Skabelin, Alexander V. |
| collection | MIT |
| description | A search for exotic mesons in the pi+pi+pi- system photoproduced by the charge exchange reaction γp→pi+pi+pi-(n) was carried out by the CLAS Collaboration at Jefferson Lab. A tagged-photon beam with energies in the 4.8 to 5.4 GeV range, produced through bremsstrahlung from a 5.744 GeV electron beam, was incident on a liquid-hydrogen target. A partial wave analysis was performed on a sample of 83 000 events, the highest such statistics to date in this reaction at these energies. The main objective of this study was to look for the photoproduction of an exotic JPC=1-+ resonant state in the 1 to 2 GeV mass range. Our partial wave analysis shows production of the a2(1320) and the pi2(1670) mesons, but no evidence for the a1(1260), nor the π1(1600) exotic state at the expected levels. An upper limit of 13.5 nb is determined for the exotic π1(1600) cross section, less than 2% of the a2(1320) production. |
| first_indexed | 2024-09-23T11:43:17Z |
| format | Article |
| id | mit-1721.1/65363 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T11:43:17Z |
| publishDate | 2011 |
| publisher | American Physical Society |
| record_format | dspace |
| spelling | mit-1721.1/653632022-10-01T05:31:07Z Search for the Photoexcitation of Exotic Mesons in the pi(+)pi(+)pi(-) System Search for the Photoexcitation of Exotic Mesons in the π+π+π- System Skabelin, Alexander V. Massachusetts Institute of Technology. Department of Physics Massachusetts Institute of Technology. Laboratory for Nuclear Science Skabelin, Alexander V. Skabelin, Alexander V. A search for exotic mesons in the pi+pi+pi- system photoproduced by the charge exchange reaction γp→pi+pi+pi-(n) was carried out by the CLAS Collaboration at Jefferson Lab. A tagged-photon beam with energies in the 4.8 to 5.4 GeV range, produced through bremsstrahlung from a 5.744 GeV electron beam, was incident on a liquid-hydrogen target. A partial wave analysis was performed on a sample of 83 000 events, the highest such statistics to date in this reaction at these energies. The main objective of this study was to look for the photoproduction of an exotic JPC=1-+ resonant state in the 1 to 2 GeV mass range. Our partial wave analysis shows production of the a2(1320) and the pi2(1670) mesons, but no evidence for the a1(1260), nor the π1(1600) exotic state at the expected levels. An upper limit of 13.5 nb is determined for the exotic π1(1600) cross section, less than 2% of the a2(1320) production. United States. Dept. of Energy (Contract No. DE-AC05-060R23177) National Science Foundation (U.S.) 2011-08-25T18:31:50Z 2011-08-25T18:31:50Z 2009-03 2008-06 Article http://purl.org/eprint/type/JournalArticle 0031-9007 http://hdl.handle.net/1721.1/65363 Nozar, M. et al. “Search for the Photoexcitation of Exotic Mesons in the Π+π+π- System.” Physical Review Letters 102.10 (2009) : 102002 © 2009 The American Physical Society. en_US http://dx.doi.org/10.1103/PhysRevLett.102.102002 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 | Skabelin, Alexander V. Search for the Photoexcitation of Exotic Mesons in the pi(+)pi(+)pi(-) System |
| title | Search for the Photoexcitation of Exotic Mesons in the pi(+)pi(+)pi(-) System |
| title_full | Search for the Photoexcitation of Exotic Mesons in the pi(+)pi(+)pi(-) System |
| title_fullStr | Search for the Photoexcitation of Exotic Mesons in the pi(+)pi(+)pi(-) System |
| title_full_unstemmed | Search for the Photoexcitation of Exotic Mesons in the pi(+)pi(+)pi(-) System |
| title_short | Search for the Photoexcitation of Exotic Mesons in the pi(+)pi(+)pi(-) System |
| title_sort | search for the photoexcitation of exotic mesons in the pi pi pi system |
| url | http://hdl.handle.net/1721.1/65363 |
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