Precise measurement of the fs/fd ratio of fragmentation fractions and of Bs0 decay branching fractions
The ratio of the $B^0_s$ and $B^0$ fragmentation fractions, $f_s/f_d$, in proton-proton collisions at the LHC, is obtained as a function of $B$-meson transverse momentum and collision centre-of-mass energy from the combined analysis of different $B$-decay channels measured by the LHCb experiment....
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| Other Authors: | |
| Format: | Article |
| Language: | English |
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American Physical Society (APS)
2022
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| Online Access: | https://hdl.handle.net/1721.1/142445 |
| _version_ | 1826188004728766464 |
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| author | Williams, Michael |
| author2 | Massachusetts Institute of Technology. Department of Physics |
| author_facet | Massachusetts Institute of Technology. Department of Physics Williams, Michael |
| author_sort | Williams, Michael |
| collection | MIT |
| description | The ratio of the $B^0_s$ and $B^0$ fragmentation fractions, $f_s/f_d$, in
proton-proton collisions at the LHC, is obtained as a function of $B$-meson
transverse momentum and collision centre-of-mass energy from the combined
analysis of different $B$-decay channels measured by the LHCb experiment. The
results are described by a linear function of the meson transverse momentum, or
with a function inspired by Tsallis statistics. Precise measurements of the
branching fractions of the $B^0_s \to J/\psi \phi$ and $B^0_s \to D^-_s \pi^+$
decays are performed, reducing their uncertainty by about a factor of two with
respect to previous world averages. Numerous $B^0_s$ decay branching fractions,
measured at the LHCb experiment, are also updated using the new values of
$f_s/f_d$ and branching fractions of normalisation channels. These results
reduce a major source of systematic uncertainty in several searches for new
physics performed through measurements of $B^0_s$ branching fractions. |
| first_indexed | 2024-09-23T07:53:08Z |
| format | Article |
| id | mit-1721.1/142445 |
| institution | Massachusetts Institute of Technology |
| language | English |
| last_indexed | 2024-09-23T07:53:08Z |
| publishDate | 2022 |
| publisher | American Physical Society (APS) |
| record_format | dspace |
| spelling | mit-1721.1/1424452023-12-08T17:06:31Z Precise measurement of the fs/fd ratio of fragmentation fractions and of Bs0 decay branching fractions Williams, Michael Massachusetts Institute of Technology. Department of Physics The ratio of the $B^0_s$ and $B^0$ fragmentation fractions, $f_s/f_d$, in proton-proton collisions at the LHC, is obtained as a function of $B$-meson transverse momentum and collision centre-of-mass energy from the combined analysis of different $B$-decay channels measured by the LHCb experiment. The results are described by a linear function of the meson transverse momentum, or with a function inspired by Tsallis statistics. Precise measurements of the branching fractions of the $B^0_s \to J/\psi \phi$ and $B^0_s \to D^-_s \pi^+$ decays are performed, reducing their uncertainty by about a factor of two with respect to previous world averages. Numerous $B^0_s$ decay branching fractions, measured at the LHCb experiment, are also updated using the new values of $f_s/f_d$ and branching fractions of normalisation channels. These results reduce a major source of systematic uncertainty in several searches for new physics performed through measurements of $B^0_s$ branching fractions. 2022-05-10T14:57:41Z 2022-05-10T14:57:41Z 2021 2022-05-10T14:54:00Z Article http://purl.org/eprint/type/JournalArticle https://hdl.handle.net/1721.1/142445 Williams, Michael. 2021. "Precise measurement of the fs/fd ratio of fragmentation fractions and of Bs0 decay branching fractions." Physical Review D, 104 (3). en 10.1103/PHYSREVD.104.032005 Physical Review D Creative Commons Attribution 4.0 International License https://creativecommons.org/licenses/by/4.0 application/pdf American Physical Society (APS) APS |
| spellingShingle | Williams, Michael Precise measurement of the fs/fd ratio of fragmentation fractions and of Bs0 decay branching fractions |
| title | Precise measurement of the fs/fd ratio of fragmentation fractions and of Bs0 decay branching fractions |
| title_full | Precise measurement of the fs/fd ratio of fragmentation fractions and of Bs0 decay branching fractions |
| title_fullStr | Precise measurement of the fs/fd ratio of fragmentation fractions and of Bs0 decay branching fractions |
| title_full_unstemmed | Precise measurement of the fs/fd ratio of fragmentation fractions and of Bs0 decay branching fractions |
| title_short | Precise measurement of the fs/fd ratio of fragmentation fractions and of Bs0 decay branching fractions |
| title_sort | precise measurement of the fs fd ratio of fragmentation fractions and of bs0 decay branching fractions |
| url | https://hdl.handle.net/1721.1/142445 |
| work_keys_str_mv | AT williamsmichael precisemeasurementofthefsfdratiooffragmentationfractionsandofbs0decaybranchingfractions |