Measurement of the gamma gamma[superscript *]-->eta[subscript c] transition form factor
We study the reaction e+e- -->e+e-eta c, eta c-->KSK±pi∓ and obtain eta c mass and width values 2982.2±0.4±1.6 MeV/c2 and 31.7±1.2±0.8 MeV, respectively. We find Γ(eta c-->γγ)B(eta c-->KK[over-bar]pi)=0.374±0.009±0.031 keV, and measure the γγ*-->eta c transition form factor in the...
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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/1721.1/58924 https://orcid.org/0000-0002-8667-5660 |
| _version_ | 1811084710551486464 |
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| author | Dujmic, Denis Sciolla, Gabriella Yamamoto, R. K. Zhao, M. Fisher, Peter H Cowan, Ray F |
| author2 | Massachusetts Institute of Technology. Department of Physics |
| author_facet | Massachusetts Institute of Technology. Department of Physics Dujmic, Denis Sciolla, Gabriella Yamamoto, R. K. Zhao, M. Fisher, Peter H Cowan, Ray F |
| author_sort | Dujmic, Denis |
| collection | MIT |
| description | We study the reaction e+e- -->e+e-eta c, eta c-->KSK±pi∓ and obtain eta c mass and width values 2982.2±0.4±1.6 MeV/c2 and 31.7±1.2±0.8 MeV, respectively. We find Γ(eta c-->γγ)B(eta c-->KK[over-bar]pi)=0.374±0.009±0.031 keV, and measure the γγ*-->eta c transition form factor in the momentum transfer range from 2 to 50 GeV[superscript 2]. The analysis is based on 469 fb[superscript -1] of integrated luminosity collected at PEP-II with the BABAR detector at e+e- center-of-mass energies near 10.6 GeV. |
| first_indexed | 2024-09-23T12:56:23Z |
| format | Article |
| id | mit-1721.1/58924 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T12:56:23Z |
| publishDate | 2010 |
| publisher | American Physical Society |
| record_format | dspace |
| spelling | mit-1721.1/589242023-02-26T08:11:27Z Measurement of the gamma gamma[superscript *]-->eta[subscript c] transition form factor Measurement of the γγ*→ηc transition form factor Dujmic, Denis Sciolla, Gabriella Yamamoto, R. K. Zhao, M. Fisher, Peter H Cowan, Ray F Massachusetts Institute of Technology. Department of Physics Massachusetts Institute of Technology. Laboratory for Nuclear Science Fisher, Peter H. Fisher, Peter H. Cowan, Ray Franklin Dujmic, Denis Sciolla, Gabriella Yamamoto, R. K. Zhao, M. We study the reaction e+e- -->e+e-eta c, eta c-->KSK±pi∓ and obtain eta c mass and width values 2982.2±0.4±1.6 MeV/c2 and 31.7±1.2±0.8 MeV, respectively. We find Γ(eta c-->γγ)B(eta c-->KK[over-bar]pi)=0.374±0.009±0.031 keV, and measure the γγ*-->eta c transition form factor in the momentum transfer range from 2 to 50 GeV[superscript 2]. The analysis is based on 469 fb[superscript -1] of integrated luminosity collected at PEP-II with the BABAR detector at e+e- center-of-mass energies near 10.6 GeV. United States. Dept. of Energy National Science Foundation (U.S.) Natural Sciences and Engineering Research Council of Canada Commissariat à l'Energie Atomique (France) Institut National de Physique Nucleaire et Physique des Particules/CNRS Bundesministerium für Bildung und Forschung, Germany Deutsche Forschungsgemeinschaft Istituto Nazionale di Fisica Nucleare of Italy FOM of the Netherlands Norges forskningsråd Ministry of Education and Science of the Russian Federation Ministerio de Ciencia e Innovación, Spain Science and Technology Facilities Council, United Kingdom Marie Curie Individual Fellowships Alfred P. Sloan Foundation 2010-10-06T20:42:14Z 2010-10-06T20:42:14Z 2010-03 Article http://purl.org/eprint/type/JournalArticle 1550-7998 1550-2368 http://hdl.handle.net/1721.1/58924 Lees, J. P. et al. “Measurement of the gamma gamma *--> eta [subscript c] transition form factor.” Physical Review D 81.5 (2010): 052010. © 2010 The American Physical Society. https://orcid.org/0000-0002-8667-5660 en_US http://dx.doi.org/10.1103/PhysRevD.81.052010 Physical Review D 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 | Dujmic, Denis Sciolla, Gabriella Yamamoto, R. K. Zhao, M. Fisher, Peter H Cowan, Ray F Measurement of the gamma gamma[superscript *]-->eta[subscript c] transition form factor |
| title | Measurement of the gamma gamma[superscript *]-->eta[subscript c] transition form factor |
| title_full | Measurement of the gamma gamma[superscript *]-->eta[subscript c] transition form factor |
| title_fullStr | Measurement of the gamma gamma[superscript *]-->eta[subscript c] transition form factor |
| title_full_unstemmed | Measurement of the gamma gamma[superscript *]-->eta[subscript c] transition form factor |
| title_short | Measurement of the gamma gamma[superscript *]-->eta[subscript c] transition form factor |
| title_sort | measurement of the gamma gamma superscript eta subscript c transition form factor |
| url | http://hdl.handle.net/1721.1/58924 https://orcid.org/0000-0002-8667-5660 |
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