Observation of ηc(1S) and ηc(2S) decays to K+K-π+π-π0 in two-photon interactions
We study the processes γγ→K[subscript S][superscript 0]K[superscript ±]π[superscript ∓] and γγ→K[superscript +]K[superscript -]π[superscript +]π[superscript -]π[superscript 0] using a data sample of 519.2fb[superscript -1] recorded by the BABAR detector at the PEP-II asymmetric-energy e[superscript...
| Main Authors: | , , , |
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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/1721.1/66943 |
| _version_ | 1826212079229468672 |
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| author | Dujmic, Denis Sciolla, Gabriella Zhao, M. 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 Zhao, M. Cowan, Ray F |
| author_sort | Dujmic, Denis |
| collection | MIT |
| description | We study the processes γγ→K[subscript S][superscript 0]K[superscript ±]π[superscript ∓] and γγ→K[superscript +]K[superscript -]π[superscript +]π[superscript -]π[superscript 0] using a data sample of 519.2fb[superscript -1] recorded by the BABAR detector at the PEP-II asymmetric-energy e[superscript +]e[superscript -] collider at center-of-mass energies near the Υ(nS) (n=2, 3, 4) resonances. We observe the η[subscript c](1S), χ[subscript c0](1P) and η[subscript c](2S) resonances produced in two-photon interactions and decaying to K[subscript S][superscript 0]K[superscript ±]π[superscript ∓], with significances of 18.1, 5.4 and 5.3 standard deviations (including systematic errors), respectively, and report 4.0σ evidence of the χ[subscript c2](1P) decay to this final state. We measure the η[subscript c](2S) mass and width in K[subscript S][subscript 0]K[subscript ±]π[subscript ∓] decays, and obtain the values m(η[subscript c](2S))=3638.5±1.5±0.8 MeV/c[superscript 2] and Γ(η[subscript c](2S))=13.4±4.6±3.2 MeV, where the first uncertainty is statistical and the second is systematic. We measure the two-photon width times branching fraction for the reported resonance signals, and search for the χ[subscript c2](2P) resonance, but no significant signal is observed. |
| first_indexed | 2024-09-23T15:16:04Z |
| format | Article |
| id | mit-1721.1/66943 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T15:16:04Z |
| publishDate | 2011 |
| publisher | American Physical Society |
| record_format | dspace |
| spelling | mit-1721.1/669432023-02-26T05:27:48Z Observation of ηc(1S) and ηc(2S) decays to K+K-π+π-π0 in two-photon interactions Dujmic, Denis Sciolla, Gabriella Zhao, M. Cowan, Ray F Massachusetts Institute of Technology. Laboratory for Nuclear Science Cowan, Ray Franklin Cowan, Ray Franklin Dujmic, Denis Sciolla, Gabriella Zhao, M. We study the processes γγ→K[subscript S][superscript 0]K[superscript ±]π[superscript ∓] and γγ→K[superscript +]K[superscript -]π[superscript +]π[superscript -]π[superscript 0] using a data sample of 519.2fb[superscript -1] recorded by the BABAR detector at the PEP-II asymmetric-energy e[superscript +]e[superscript -] collider at center-of-mass energies near the Υ(nS) (n=2, 3, 4) resonances. We observe the η[subscript c](1S), χ[subscript c0](1P) and η[subscript c](2S) resonances produced in two-photon interactions and decaying to K[subscript S][superscript 0]K[superscript ±]π[superscript ∓], with significances of 18.1, 5.4 and 5.3 standard deviations (including systematic errors), respectively, and report 4.0σ evidence of the χ[subscript c2](1P) decay to this final state. We measure the η[subscript c](2S) mass and width in K[subscript S][subscript 0]K[subscript ±]π[subscript ∓] decays, and obtain the values m(η[subscript c](2S))=3638.5±1.5±0.8 MeV/c[superscript 2] and Γ(η[subscript c](2S))=13.4±4.6±3.2 MeV, where the first uncertainty is statistical and the second is systematic. We measure the two-photon width times branching fraction for the reported resonance signals, and search for the χ[subscript c2](2P) resonance, but no significant signal is observed. United States. Dept. of Energy National Science Foundation (U.S.) Natural Sciences and Engineering Research Council of Canada (NSERC) France. Commissariat à l'énergie atomique Institut national de physique nucléaire et de physique des particules Germany. Federal Ministry of Education and Research (BMBF) Deutsche Forschungsgemeinschaft (DFG) Istituto nazionale di fisica nucleare (INFN) Foundation for Fundamental Research on Matter (Netherlands) Research Council of Norway Ministry of Education and Science of the Russian Federation Spain. Ministerio de Ciencia e Innovación (MICINN) Science and Technology Facilities Council (Great Britain) 2011-11-04T19:20:51Z 2011-11-04T19:20:51Z 2011-07 2011-03 Article http://purl.org/eprint/type/JournalArticle 1550-7998 1550-2368 http://hdl.handle.net/1721.1/66943 del Amo Sanchez, P. et al. “Observation of η_{c}(1S) and η_{c}(2S) decays to K^{+}K^{-}π^{+}π^{-}π^{0} in two-photon interactions.” Physical Review D 84 (2011): n. pag. Web. 4 Nov. 2011. © 2011 American Physical Society en_US http://dx.doi.org/10.1103/PhysRevD.84.012004 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 Zhao, M. Cowan, Ray F Observation of ηc(1S) and ηc(2S) decays to K+K-π+π-π0 in two-photon interactions |
| title | Observation of ηc(1S) and ηc(2S) decays to K+K-π+π-π0 in two-photon interactions |
| title_full | Observation of ηc(1S) and ηc(2S) decays to K+K-π+π-π0 in two-photon interactions |
| title_fullStr | Observation of ηc(1S) and ηc(2S) decays to K+K-π+π-π0 in two-photon interactions |
| title_full_unstemmed | Observation of ηc(1S) and ηc(2S) decays to K+K-π+π-π0 in two-photon interactions |
| title_short | Observation of ηc(1S) and ηc(2S) decays to K+K-π+π-π0 in two-photon interactions |
| title_sort | observation of ηc 1s and ηc 2s decays to k k π π π0 in two photon interactions |
| url | http://hdl.handle.net/1721.1/66943 |
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