Analysis of Neutral B-Meson Decays into Two Muons
Branching fraction and effective lifetime measurements of the rare decay $B^0_s\to\mu^+\mu^-$ and searches for the decays $B^0\to\mu^+\mu^-$ and $B^0_s\to\mu^+\mu^-\gamma$ are reported using proton-proton collision data collected with the LHCb detector at centre-of-mass energies of $7$ TeV, $8$ T...
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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/1721.1/142441 |
| _version_ | 1826217325292945408 |
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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 | Branching fraction and effective lifetime measurements of the rare decay
$B^0_s\to\mu^+\mu^-$ and searches for the decays $B^0\to\mu^+\mu^-$ and
$B^0_s\to\mu^+\mu^-\gamma$ are reported using proton-proton collision data
collected with the LHCb detector at centre-of-mass energies of $7$ TeV, $8$ TeV
and $13$ TeV, corresponding to a luminosity of $9$ fb$^{-1}$. The branching
fraction
${\mathcal{B}}(B^0_s\to\mu^+\mu^-)=\left(3.09^{+0.46+0.15}_{-0.43-0.11}\right)\times
10^{-9}$ and the effective lifetime $\tau(B^0_s\to\mu^+\mu^-)=(2.07\pm 0.29\pm
0.03)$ are measured, where the first uncertainty is statistical and the second
systematic. No significant signal for $B^0\to\mu^+\mu^-$ and
$B^0_s\to\mu^+\mu^-\gamma$ decays is found and upper limits
$\mathcal{B}(B^0\to\mu^+\mu^-)<2.6\times 10^{-10}$ and
$\mathcal{B}(B^0_s\to\mu^+\mu^-\gamma)<2.0\times 10^{-9}$ at the 95% CL are
determined, where the latter is limited to the range $m_{\mu\mu} > 4.9$
GeV$/c^2$. The results are in agreement with the Standard Model expectations. |
| first_indexed | 2024-09-23T17:01:51Z |
| format | Article |
| id | mit-1721.1/142441 |
| institution | Massachusetts Institute of Technology |
| language | English |
| last_indexed | 2024-09-23T17:01:51Z |
| publishDate | 2022 |
| publisher | American Physical Society (APS) |
| record_format | dspace |
| spelling | mit-1721.1/1424412023-02-10T19:02:04Z Analysis of Neutral B-Meson Decays into Two Muons Williams, Michael Massachusetts Institute of Technology. Department of Physics Branching fraction and effective lifetime measurements of the rare decay $B^0_s\to\mu^+\mu^-$ and searches for the decays $B^0\to\mu^+\mu^-$ and $B^0_s\to\mu^+\mu^-\gamma$ are reported using proton-proton collision data collected with the LHCb detector at centre-of-mass energies of $7$ TeV, $8$ TeV and $13$ TeV, corresponding to a luminosity of $9$ fb$^{-1}$. The branching fraction ${\mathcal{B}}(B^0_s\to\mu^+\mu^-)=\left(3.09^{+0.46+0.15}_{-0.43-0.11}\right)\times 10^{-9}$ and the effective lifetime $\tau(B^0_s\to\mu^+\mu^-)=(2.07\pm 0.29\pm 0.03)$ are measured, where the first uncertainty is statistical and the second systematic. No significant signal for $B^0\to\mu^+\mu^-$ and $B^0_s\to\mu^+\mu^-\gamma$ decays is found and upper limits $\mathcal{B}(B^0\to\mu^+\mu^-)<2.6\times 10^{-10}$ and $\mathcal{B}(B^0_s\to\mu^+\mu^-\gamma)<2.0\times 10^{-9}$ at the 95% CL are determined, where the latter is limited to the range $m_{\mu\mu} > 4.9$ GeV$/c^2$. The results are in agreement with the Standard Model expectations. 2022-05-10T14:44:12Z 2022-05-10T14:44:12Z 2022-01-28 2022-05-10T14:41:20Z Article http://purl.org/eprint/type/JournalArticle https://hdl.handle.net/1721.1/142441 Williams, Michael. 2022. "Analysis of Neutral B-Meson Decays into Two Muons." Physical Review Letters, 128 (4). en 10.1103/physrevlett.128.041801 Physical Review Letters Creative Commons Attribution 4.0 International License https://creativecommons.org/licenses/by/4.0 application/pdf American Physical Society (APS) APS |
| spellingShingle | Williams, Michael Analysis of Neutral B-Meson Decays into Two Muons |
| title | Analysis of Neutral B-Meson Decays into Two Muons |
| title_full | Analysis of Neutral B-Meson Decays into Two Muons |
| title_fullStr | Analysis of Neutral B-Meson Decays into Two Muons |
| title_full_unstemmed | Analysis of Neutral B-Meson Decays into Two Muons |
| title_short | Analysis of Neutral B-Meson Decays into Two Muons |
| title_sort | analysis of neutral b meson decays into two muons |
| url | https://hdl.handle.net/1721.1/142441 |
| work_keys_str_mv | AT williamsmichael analysisofneutralbmesondecaysintotwomuons |