Compact Muon Solenoid
LHC, CERN
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| CMS-PAS-BPH-21-006 | ||
| Measurement of ${\mathrm B^0_s}\to\mu^+\mu^-$ decay properties and search for the ${\mathrm B}^0\to\mu\mu$ decay in proton-proton collisions at $\sqrt{s}=$ 13 TeV | ||
| CMS Collaboration | ||
| July 2022 | ||
| Abstract: We report a measurement of the ${\mathrm B^0_s}\to\mu^+\mu^-$ branching fraction and its effective lifetime, as well as results of a search for the ${\mathrm B}^0\to\mu^+\mu^-$ decay in proton-proton collisions at $\sqrt{s}=$ 13 TeV at the LHC. The analysis is based on data collected with the CMS detector in 2016-2018 corresponding to an integrated luminosity of 140 fb$^{-1}$. The measured branching fraction of the ${\mathrm B^0_s}\to\mu^+\mu^-$ decay and the effective ${\mathrm B^0_s}$ lifetime are the most precise measurements to date. No evidence for the ${\mathrm B}^0\to\mu^+\mu^-$ decay has been found. All results are found to be consistent with the standard model predictions. | ||
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Links:
CDS record (PDF) ;
Physics Briefing ;
CADI line (restricted) ;
These preliminary results are superseded in this paper, PLB 842 (2023) 137955. The superseded preliminary plots can be found here. |
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Compact Muon Solenoid LHC, CERN |
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