Observation of the doubly Cabibbo-suppressed decay Ξ c+ → pϕ
The doubly Cabibbo-suppressed decay Ξ c+ → pϕ with ϕ → K+K− is observed for the first time, with a statistical significance of more than fifteen standard deviations. The data sample used in this analysis corresponds to an integrated luminosity of 2 fb−1 recorded with the LHCb detector in pp collisio...
| Main Authors: | , , , , |
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| Other Authors: | |
| Format: | Article |
| Language: | English |
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Springer Berlin Heidelberg
2020
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| Online Access: | https://hdl.handle.net/1721.1/127637 |
| _version_ | 1811091638731145216 |
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| author | Boettcher, Thomas Julian Craik, Daniel C Weisser, Constantin Williams, M. LHCb Collaboration |
| author2 | Massachusetts Institute of Technology. Department of Physics |
| author_facet | Massachusetts Institute of Technology. Department of Physics Boettcher, Thomas Julian Craik, Daniel C Weisser, Constantin Williams, M. LHCb Collaboration |
| author_sort | Boettcher, Thomas Julian |
| collection | MIT |
| description | The doubly Cabibbo-suppressed decay Ξ c+ → pϕ with ϕ → K+K− is observed for the first time, with a statistical significance of more than fifteen standard deviations. The data sample used in this analysis corresponds to an integrated luminosity of 2 fb−1 recorded with the LHCb detector in pp collisions at a centre-of-mass energy of 8 TeV. The ratio of branching fractions between the decay Ξ c+ → pϕ and the singly Cabibbo-suppressed decay Ξ c+→ pK−π+ is measured to be ℬΞc+ → p ϕℬΞc+ → pK−π+ = 19.8 ± 0.7 ± 0.9 ± 0.2 × 10 −3, where the first uncertainty is statistical, the second systematic and the third due to the knowledge of the ϕ → K+K− branching fraction. |
| first_indexed | 2024-09-23T15:05:34Z |
| format | Article |
| id | mit-1721.1/127637 |
| institution | Massachusetts Institute of Technology |
| language | English |
| last_indexed | 2024-09-23T15:05:34Z |
| publishDate | 2020 |
| publisher | Springer Berlin Heidelberg |
| record_format | dspace |
| spelling | mit-1721.1/1276372022-10-02T00:33:04Z Observation of the doubly Cabibbo-suppressed decay Ξ c+ → pϕ Boettcher, Thomas Julian Craik, Daniel C Weisser, Constantin Williams, M. LHCb Collaboration Massachusetts Institute of Technology. Department of Physics Massachusetts Institute of Technology. Department of Nuclear Science and Engineering The doubly Cabibbo-suppressed decay Ξ c+ → pϕ with ϕ → K+K− is observed for the first time, with a statistical significance of more than fifteen standard deviations. The data sample used in this analysis corresponds to an integrated luminosity of 2 fb−1 recorded with the LHCb detector in pp collisions at a centre-of-mass energy of 8 TeV. The ratio of branching fractions between the decay Ξ c+ → pϕ and the singly Cabibbo-suppressed decay Ξ c+→ pK−π+ is measured to be ℬΞc+ → p ϕℬΞc+ → pK−π+ = 19.8 ± 0.7 ± 0.9 ± 0.2 × 10 −3, where the first uncertainty is statistical, the second systematic and the third due to the knowledge of the ϕ → K+K− branching fraction. 2020-09-16T17:08:17Z 2020-09-16T17:08:17Z 2019-04 2019-03 2020-06-26T12:58:21Z Article http://purl.org/eprint/type/JournalArticle 1029-8479 https://hdl.handle.net/1721.1/127637 LHCb Collaboration (Aaij, R. et al.). "Observation of the doubly Cabibbo-suppressed decay Ξ c+ → pϕ." Journal of High Energy Physics 2019, 4 (April 2019): 84 en https://doi.org/10.1007/JHEP04(2019)084 Journal of High Energy Physics Creative Commons Attribution https://creativecommons.org/licenses/by/4.0/ The Author(s) application/pdf Springer Berlin Heidelberg Springer Berlin Heidelberg |
| spellingShingle | Boettcher, Thomas Julian Craik, Daniel C Weisser, Constantin Williams, M. LHCb Collaboration Observation of the doubly Cabibbo-suppressed decay Ξ c+ → pϕ |
| title | Observation of the doubly Cabibbo-suppressed decay Ξ c+ → pϕ |
| title_full | Observation of the doubly Cabibbo-suppressed decay Ξ c+ → pϕ |
| title_fullStr | Observation of the doubly Cabibbo-suppressed decay Ξ c+ → pϕ |
| title_full_unstemmed | Observation of the doubly Cabibbo-suppressed decay Ξ c+ → pϕ |
| title_short | Observation of the doubly Cabibbo-suppressed decay Ξ c+ → pϕ |
| title_sort | observation of the doubly cabibbo suppressed decay ξ c pϕ |
| url | https://hdl.handle.net/1721.1/127637 |
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