Amplitude analysis and branching fraction measurement of B[overbar] s[superscript 0]-->J/ψK[superscript +]K[superscript -]
An amplitude analysis of the final state structure in the B̅ s0→J/ψK+K- decay mode is performed using 1.0 fb-1 of data collected by the LHCb experiment in 7 TeV center-of-mass energy pp collisions produced by the LHC. A modified Dalitz plot analysis of the final state is performed using both the in...
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| Format: | Article |
| Language: | en_US |
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American Physical Society
2013
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| Online Access: | http://hdl.handle.net/1721.1/82130 https://orcid.org/0000-0001-8285-3346 |
| _version_ | 1826214238187683840 |
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| author | Williams, M. |
| author2 | Massachusetts Institute of Technology. Department of Physics |
| author_facet | Massachusetts Institute of Technology. Department of Physics Williams, M. |
| author_sort | Williams, M. |
| collection | MIT |
| description | An amplitude analysis of the final state structure in the B̅ s0→J/ψK+K- decay mode is performed using 1.0 fb-1 of data collected by the LHCb experiment in 7 TeV center-of-mass energy pp collisions produced by the LHC. A modified Dalitz plot analysis of the final state is performed using both the invariant mass spectra and the decay angular distributions. Resonant structures are observed in the K+K- mass spectrum as well as a significant nonresonant S-wave contribution over the entire K+K- mass range. The largest resonant component is the ϕ(1020), accompanied by f0(980), f2′(1525), and four additional resonances. The overall branching fraction is measured to be B(B̅ s0→J/ψK+K-)=(7.70±0.08±0.39±0.60)×10-4, where the first uncertainty is statistical, the second systematic, and the third due to the ratio of the number of B̅ s0 to B- mesons produced. The mass and width of the f2′(1525) are measured to be 1522.2±2.8-2.0+5.3 MeV and 84±6-5+10 MeV, respectively. The final state fractions of the other resonant states are also reported. |
| first_indexed | 2024-09-23T16:02:19Z |
| format | Article |
| id | mit-1721.1/82130 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T16:02:19Z |
| publishDate | 2013 |
| publisher | American Physical Society |
| record_format | dspace |
| spelling | mit-1721.1/821302022-09-29T17:46:58Z Amplitude analysis and branching fraction measurement of B[overbar] s[superscript 0]-->J/ψK[superscript +]K[superscript -] Amplitude analysis and branching fraction measurement of B̅ s0→J/ψK+K- Williams, M. Massachusetts Institute of Technology. Department of Physics Williams, M. An amplitude analysis of the final state structure in the B̅ s0→J/ψK+K- decay mode is performed using 1.0 fb-1 of data collected by the LHCb experiment in 7 TeV center-of-mass energy pp collisions produced by the LHC. A modified Dalitz plot analysis of the final state is performed using both the invariant mass spectra and the decay angular distributions. Resonant structures are observed in the K+K- mass spectrum as well as a significant nonresonant S-wave contribution over the entire K+K- mass range. The largest resonant component is the ϕ(1020), accompanied by f0(980), f2′(1525), and four additional resonances. The overall branching fraction is measured to be B(B̅ s0→J/ψK+K-)=(7.70±0.08±0.39±0.60)×10-4, where the first uncertainty is statistical, the second systematic, and the third due to the ratio of the number of B̅ s0 to B- mesons produced. The mass and width of the f2′(1525) are measured to be 1522.2±2.8-2.0+5.3 MeV and 84±6-5+10 MeV, respectively. The final state fractions of the other resonant states are also reported. National Science Foundation (U.S.) 2013-11-15T17:27:18Z 2013-11-15T17:27:18Z 2013-04 2013-02 Article http://purl.org/eprint/type/JournalArticle 1550-7998 1550-2368 http://hdl.handle.net/1721.1/82130 Aaij, R., C. Abellan Beteta, A. Adametz, B. Adeva, M. Adinolfi, C. Adrover, A. Affolder, et al. Amplitude Analysis and Branching Fraction Measurement of B[over ¯]_{s}^{0}→J/ψK^{+}K^{-}. Physical Review D 87, no. 7 (April 2013). https://orcid.org/0000-0001-8285-3346 en_US http://dx.doi.org/10.1103/PhysRevD.87.072004 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 | Williams, M. Amplitude analysis and branching fraction measurement of B[overbar] s[superscript 0]-->J/ψK[superscript +]K[superscript -] |
| title | Amplitude analysis and branching fraction measurement of B[overbar] s[superscript 0]-->J/ψK[superscript +]K[superscript -] |
| title_full | Amplitude analysis and branching fraction measurement of B[overbar] s[superscript 0]-->J/ψK[superscript +]K[superscript -] |
| title_fullStr | Amplitude analysis and branching fraction measurement of B[overbar] s[superscript 0]-->J/ψK[superscript +]K[superscript -] |
| title_full_unstemmed | Amplitude analysis and branching fraction measurement of B[overbar] s[superscript 0]-->J/ψK[superscript +]K[superscript -] |
| title_short | Amplitude analysis and branching fraction measurement of B[overbar] s[superscript 0]-->J/ψK[superscript +]K[superscript -] |
| title_sort | amplitude analysis and branching fraction measurement of b overbar s superscript 0 j ψk superscript k superscript |
| url | http://hdl.handle.net/1721.1/82130 https://orcid.org/0000-0001-8285-3346 |
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