Branching Fraction Measurements of the Rare Bs0 →ϕμ+μ− and Bs0 → f2′ (1525)μ+μ− Decays
Name
PhysRevLett.127.151801.pdf
Description
Published version
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395.56 KB
Format
Adobe PDF
Checksum (MD5)
0d10be03c5910b7e3964af2ae6076373
Author(s)
Williams, Michael
Date Issued
2021
Journal
Physical Review Letters
Publisher
American Physical Society (APS)
Citation
Williams, Michael. 2021. "Branching Fraction Measurements of the Rare Bs0 →ϕμ+μ− and Bs0 → f2′ (1525)μ+μ− Decays." Physical Review Letters, 127 (15).
Version
Final published version
Abstract
The branching fraction of the rare $B^0_s\rightarrow\phi\mu^+\mu^-$ decay is
measured using data collected by the LHCb experiment at center-of-mass energies
of $7$, $8$ and $13\,\rm{TeV}$, corresponding to integrated luminosities of
$1$, $2$ and $6\,{\rm fb}^{-1}$, respectively. The branching fraction is
reported in intervals of $q^2$, the square of the dimuon invariant mass. In the
$q^2$ region between $1.1$ and $6.0\,{\rm Ge\kern -0.1em V}^2\!/c^4$, the
measurement is found to lie $3.6$ standard deviations below a Standard Model
prediction based on a combination of Light Cone Sum Rule and Lattice QCD
calculations. In addition, the first observation of the rare $B^0_s\rightarrow
f_2^\prime(1525)\mu^+\mu^-$ decay is reported with a statistical significance
of nine standard deviations and its branching fraction is determined.
MIT Department
Massachusetts Institute of Technology. Department of Physics
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Creative Commons Attribution 4.0 International License
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DOI of Published Version
https://doi.org/10.1103/PHYSREVLETT.127.151801
