Measurement of the B$^0_\mathrm{S}$$\to$$\mu^+\mu^-$ decay properties and search for the B$^0$$\to$$\mu^+\mu^-$ decay in proton-proton collisions at $\sqrt{s}$ = 13 TeV

The collaboration
CMS-BPH-21-006, 2022.

Abstract (data abstract)
CMS-BPH-21-006: We report a measurement of the Bs to mu+mu- branching fraction and its effective lifetime, as well as results of a search for the B0 to mu+mu- decay in proton-proton collisions at 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 Bs to mu+mu- decay and the effective Bs lifetime are the most precise measurements to date. No evidence for the B0 to mu+mu- decay has been found. All results are found to be consistent with the standard model predictions.

• #### Results

10.17182/hepdata.135675.v1/t1

The measured branching fraction and effective lifetime for Bs to mu+mu- decay; the branching fraction and upper limits for B0...

• #### Figure 2-a

Data from Figure 2a

10.17182/hepdata.135675.v1/t2

The distribution of the B+ meson pT after the sPlot background subtraction in data and simulation for B+ to J/psi...

• #### Figure 2-b

Data from Figure 2b

10.17182/hepdata.135675.v1/t3

The distribution of the Bs meson pT after the sPlot background subtraction in data and simulation for Bs to mu+mu-...

• #### Figure 4-c

Data from Figure 4c

10.17182/hepdata.135675.v1/t4

The profile likelihood scan as a function of Bs to mu+mu- and B0 to mu+mu- decay branching fractions in 2D.

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