Measurement of fs/fu Variation with Proton-Proton Collision Energy and B-Meson Kinematics
The ratio of the B[superscript 0 over subscript s] and B[superscript +] fragmentation fractions f[subscript s] and f[subscript u] is studied with B[superscript 0 over subscript s]→J/ψϕ and B[superscript +]→J/ψK[superscript +] decays using data collected by the LHCb experiment in proton-proton collis...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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American Physical Society
2020
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| Online Access: | https://hdl.handle.net/1721.1/125904 |
| _version_ | 1826192895263113216 |
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| author | LHCb Collaboration Boettcher, T. Craik, D. C. Weisser, Constantin Williams, M. |
| author2 | Massachusetts Institute of Technology. Department of Physics |
| author_facet | Massachusetts Institute of Technology. Department of Physics LHCb Collaboration Boettcher, T. Craik, D. C. Weisser, Constantin Williams, M. |
| author_sort | LHCb Collaboration |
| collection | MIT |
| description | The ratio of the B[superscript 0 over subscript s] and B[superscript +] fragmentation fractions f[subscript s] and f[subscript u] is studied with B[superscript 0 over subscript s]→J/ψϕ and B[superscript +]→J/ψK[superscript +] decays using data collected by the LHCb experiment in proton-proton collisions at 7, 8, and 13 TeV center-of-mass energies. The analysis is performed in bins of B-meson momentum, longitudinal momentum, transverse momentum, pseudorapidity, and rapidity. The fragmentation-fraction ratio f[subscript s]/f[subscript u] is observed to depend on the B-meson transverse momentum with a significance of 6.0σ. This dependency is driven by the 13 TeV sample (8.7σ), while the results for the other collision energies are not significant when considered separately. Furthermore, the results show a 4.8σ evidence for an increase of f[subscript s]/f[subscript u] as a function of collision energy. |
| first_indexed | 2024-09-23T09:30:29Z |
| format | Article |
| id | mit-1721.1/125904 |
| institution | Massachusetts Institute of Technology |
| language | English |
| last_indexed | 2024-09-23T09:30:29Z |
| publishDate | 2020 |
| publisher | American Physical Society |
| record_format | dspace |
| spelling | mit-1721.1/1259042024-06-25T18:38:41Z Measurement of fs/fu Variation with Proton-Proton Collision Energy and B-Meson Kinematics Measurement of f[subscript s]/f[subscript u] Variation with Proton-Proton Collision Energy and B-Meson Kinematics LHCb Collaboration Boettcher, T. Craik, D. C. Weisser, Constantin Williams, M. Massachusetts Institute of Technology. Department of Physics The ratio of the B[superscript 0 over subscript s] and B[superscript +] fragmentation fractions f[subscript s] and f[subscript u] is studied with B[superscript 0 over subscript s]→J/ψϕ and B[superscript +]→J/ψK[superscript +] decays using data collected by the LHCb experiment in proton-proton collisions at 7, 8, and 13 TeV center-of-mass energies. The analysis is performed in bins of B-meson momentum, longitudinal momentum, transverse momentum, pseudorapidity, and rapidity. The fragmentation-fraction ratio f[subscript s]/f[subscript u] is observed to depend on the B-meson transverse momentum with a significance of 6.0σ. This dependency is driven by the 13 TeV sample (8.7σ), while the results for the other collision energies are not significant when considered separately. Furthermore, the results show a 4.8σ evidence for an increase of f[subscript s]/f[subscript u] as a function of collision energy. 2020-06-19T20:56:50Z 2020-06-19T20:56:50Z 2020-03 2019-10 2020-03-26T18:47:32Z Article http://purl.org/eprint/type/JournalArticle 1079-7114 0031-9007 https://hdl.handle.net/1721.1/125904 LHCb Collaboration (Aaij, R., et al.), "Measurement of fs/fu Variation with Proton-Proton Collision Energy and B-Meson Kinematics." Physical Review Letters 124 (Mar. 2020): no. 122002 doi 10.1103/PhysRevLett.124.122002 ©2020 Author(s) en 10.1103/PhysRevLett.124.122002 Physical Review Letters Creative Commons Attribution 3.0 unported license http://creativecommons.org/licenses/by/3.0 CERN application/pdf American Physical Society American Physical Society |
| spellingShingle | LHCb Collaboration Boettcher, T. Craik, D. C. Weisser, Constantin Williams, M. Measurement of fs/fu Variation with Proton-Proton Collision Energy and B-Meson Kinematics |
| title | Measurement of fs/fu Variation with Proton-Proton Collision Energy and B-Meson Kinematics |
| title_full | Measurement of fs/fu Variation with Proton-Proton Collision Energy and B-Meson Kinematics |
| title_fullStr | Measurement of fs/fu Variation with Proton-Proton Collision Energy and B-Meson Kinematics |
| title_full_unstemmed | Measurement of fs/fu Variation with Proton-Proton Collision Energy and B-Meson Kinematics |
| title_short | Measurement of fs/fu Variation with Proton-Proton Collision Energy and B-Meson Kinematics |
| title_sort | measurement of fs fu variation with proton proton collision energy and b meson kinematics |
| url | https://hdl.handle.net/1721.1/125904 |
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