Study of the Reaction e[superscript +]e[superscript −] → ψ(2S)π[superscript +]π[superscript − via Initial-State Radiation at BaBar
We study the process e[superscript +]e[superscript −] → ψ(2S)π[superscript +]π[superscript −] with initial-state-radiation events produced at the PEP-II asymmetric-energy collider. The data were recorded with the BABAR detector at center-of-mass energies at and near the Υ(nS) (n = 2,3,4) resonances...
| Main Authors: | , , |
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| Format: | Article |
| Language: | en_US |
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American Physical Society
2014
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| Online Access: | http://hdl.handle.net/1721.1/91194 |
| _version_ | 1826188220984983552 |
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| author | Dujmic, Denis Sciolla, Gabriella Cowan, Ray F |
| author2 | Massachusetts Institute of Technology. Laboratory for Nuclear Science |
| author_facet | Massachusetts Institute of Technology. Laboratory for Nuclear Science Dujmic, Denis Sciolla, Gabriella Cowan, Ray F |
| author_sort | Dujmic, Denis |
| collection | MIT |
| description | We study the process e[superscript +]e[superscript −] → ψ(2S)π[superscript +]π[superscript −] with initial-state-radiation events produced at the PEP-II asymmetric-energy collider. The data were recorded with the BABAR detector at center-of-mass energies at and near the Υ(nS) (n = 2,3,4) resonances and correspond to an integrated luminosity of 520 fb[superscript −1]. We investigate the ψ(2S)π[superscript +]π[superscript −] mass distribution from 3.95 to 5.95 GeV/c[superscript 2], and measure the center-of-mass energy dependence of the associated e[superscript +]e[superscript −] → ψ(2S)π[superscript +]π[superscript −] cross section. The mass distribution exhibits evidence of two resonant structures. A fit to the ψ(2S)π[superscript +]π[superscript −] mass distribution corresponding to the decay mode ψ(2S) → J/ψπ[superscript +]π[superscript −] yields a mass value of 4340 ± 16 (stat) ± 9 (syst) MeV/c[superscript 2] and a width of 94 ± 32 (stat) ± 13 (syst) MeV for the first resonance, and for the second a mass value of 4669 ± 21 (stat) ± 3 (syst) MeV/c[superscript 2] and a width of 104 ± 48 (stat) ± 10 (syst) MeV. In addition, we show the π[superscript +]π[superscript −] mass distributions for these resonant regions. |
| first_indexed | 2024-09-23T07:56:04Z |
| format | Article |
| id | mit-1721.1/91194 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T07:56:04Z |
| publishDate | 2014 |
| publisher | American Physical Society |
| record_format | dspace |
| spelling | mit-1721.1/911942023-02-26T07:40:24Z Study of the Reaction e[superscript +]e[superscript −] → ψ(2S)π[superscript +]π[superscript − via Initial-State Radiation at BaBar Dujmic, Denis Sciolla, Gabriella Cowan, Ray F Massachusetts Institute of Technology. Laboratory for Nuclear Science Cowan, Ray Franklin Dujmic, Denis Sciolla, Gabriella We study the process e[superscript +]e[superscript −] → ψ(2S)π[superscript +]π[superscript −] with initial-state-radiation events produced at the PEP-II asymmetric-energy collider. The data were recorded with the BABAR detector at center-of-mass energies at and near the Υ(nS) (n = 2,3,4) resonances and correspond to an integrated luminosity of 520 fb[superscript −1]. We investigate the ψ(2S)π[superscript +]π[superscript −] mass distribution from 3.95 to 5.95 GeV/c[superscript 2], and measure the center-of-mass energy dependence of the associated e[superscript +]e[superscript −] → ψ(2S)π[superscript +]π[superscript −] cross section. The mass distribution exhibits evidence of two resonant structures. A fit to the ψ(2S)π[superscript +]π[superscript −] mass distribution corresponding to the decay mode ψ(2S) → J/ψπ[superscript +]π[superscript −] yields a mass value of 4340 ± 16 (stat) ± 9 (syst) MeV/c[superscript 2] and a width of 94 ± 32 (stat) ± 13 (syst) MeV for the first resonance, and for the second a mass value of 4669 ± 21 (stat) ± 3 (syst) MeV/c[superscript 2] and a width of 104 ± 48 (stat) ± 10 (syst) MeV. In addition, we show the π[superscript +]π[superscript −] mass distributions for these resonant regions. United States. Dept. of Energy National Science Foundation (U.S.) Alfred P. Sloan Foundation 2014-10-27T18:05:23Z 2014-10-27T18:05:23Z 2014-06 2012-11 Article http://purl.org/eprint/type/JournalArticle 1550-7998 1550-2368 http://hdl.handle.net/1721.1/91194 Lees, J. P., V. Poireau, V. Tisserand, J. Garra Tico, E. Grauges, A. Palano, G. Eigen, et al. “Study of the Reaction e[superscript +]e[superscript −] → ψ(2S)π[superscript +]π[superscript − via Initial-State Radiation at BaBar.” Phys. Rev. D 89, no. 11 (June 2014). © 2014 American Physical Society en_US http://dx.doi.org/10.1103/PhysRevD.89.111103 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 American Physical Society |
| spellingShingle | Dujmic, Denis Sciolla, Gabriella Cowan, Ray F Study of the Reaction e[superscript +]e[superscript −] → ψ(2S)π[superscript +]π[superscript − via Initial-State Radiation at BaBar |
| title | Study of the Reaction e[superscript +]e[superscript −] → ψ(2S)π[superscript +]π[superscript − via Initial-State Radiation at BaBar |
| title_full | Study of the Reaction e[superscript +]e[superscript −] → ψ(2S)π[superscript +]π[superscript − via Initial-State Radiation at BaBar |
| title_fullStr | Study of the Reaction e[superscript +]e[superscript −] → ψ(2S)π[superscript +]π[superscript − via Initial-State Radiation at BaBar |
| title_full_unstemmed | Study of the Reaction e[superscript +]e[superscript −] → ψ(2S)π[superscript +]π[superscript − via Initial-State Radiation at BaBar |
| title_short | Study of the Reaction e[superscript +]e[superscript −] → ψ(2S)π[superscript +]π[superscript − via Initial-State Radiation at BaBar |
| title_sort | study of the reaction e superscript e superscript ψ 2s π superscript π superscript via initial state radiation at babar |
| url | http://hdl.handle.net/1721.1/91194 |
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