Branching Fraction Measurements of the Rare <i>B<sub>s</sub></i><SUP>0</SUP> → φμ<SUP>+</SUP>μ<SUP>-</SUP> and <i>B<sub>s</sub></i><SUP>0</SUP>→ <i>f</i><sub>2</sub>′ (1525)μ<SUP>+</SUP>μ<SUP>-</SUP> Decays



Aaij, R, Beteta, C Abellan, Ackernley, T, Adeva, B, Adinolfi, M, Afsharnia, H, Aidala, CA, Aiola, S, Ajaltouni, Z, Akar, S
et al (show 960 more authors) (2021) Branching Fraction Measurements of the Rare <i>B<sub>s</sub></i><SUP>0</SUP> → φμ<SUP>+</SUP>μ<SUP>-</SUP> and <i>B<sub>s</sub></i><SUP>0</SUP>→ <i>f</i><sub>2</sub>′ (1525)μ<SUP>+</SUP>μ<SUP>-</SUP> Decays. PHYSICAL REVIEW LETTERS, 127 (15). 151801-.

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Abstract

The branching fraction of the rare B_{s}^{0}→ϕμ^{+}μ^{-} decay is measured using data collected by the LHCb experiment at center-of-mass energies of 7, 8, and 13 TeV, corresponding to integrated luminosities of 1, 2, and 6  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  GeV^{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_{s}^{0}→f_{2}^{'}(1525)μ^{+}μ^{-} decay is reported with a statistical significance of 9 standard deviations and its branching fraction is determined.

Item Type: Article
Additional Information: All figures and tables, along with any supplementary material and additional information, are available at https://cern.ch/lhcbproject/Publications/p/LHCb-PAPER-2021-014.html (LHCb public pages)
Uncontrolled Keywords: LHCb Collaboration
Divisions: Faculty of Science and Engineering > School of Physical Sciences
Depositing User: Symplectic Admin
Date Deposited: 12 Jan 2022 16:23
Last Modified: 14 Mar 2024 22:58
DOI: 10.1103/PhysRevLett.127.151801
Related URLs:
URI: https://livrepository.liverpool.ac.uk/id/eprint/3146228

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