Constraints on the $K^0_{\mathrm{S}}\rightarrowμ^{+}μ^{-}$ branching fraction



collaboration, LHCb, Aaij, R, Beteta, C Abellán, Ackernley, T, Adeva, B, Adinolfi, M, Afsharnia, H, Aidala, CA, Aiola, S, Ajaltouni, Z
et al (show 898 more authors) (2020) Constraints on the $K^0_{\mathrm{S}}\rightarrowμ^{+}μ^{-}$ branching fraction. Phys. Rev. Lett., 125. 231801-.

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Abstract

A search for the decay $K^0_{\mathrm{S}}\rightarrow\mu^{+}\mu^{-}$ is performed using proton-proton collision data, corresponding to an integrated luminosity of $5.6\,\text{fb}^{-1}$ and collected with the LHCb experiment during 2016, 2017 and 2018 at a center-of-mass energy of $13\,\mathrm{TeV}$. The observed signal yield is consistent with zero, yielding an upper limit of ${\cal B}(K^0_{\mathrm{S}}\rightarrow\mu^{+}\mu^{-}) < 2.2 \times 10^{-10}$ at 90% CL. The limit reduces to ${\cal B}(K^0_{\mathrm{S}}\rightarrow\mu^{+}\mu^{-}) < 2.1 \times 10^{-10}$ at 90% CL once combined with the result from data taken in 2011 and 2012.

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-2019-038.html
Uncontrolled Keywords: hep-ex, hep-ex
Depositing User: Symplectic Admin
Date Deposited: 05 Aug 2024 09:40
Last Modified: 05 Aug 2024 09:40
DOI: 10.48550/arxiv.2001.10354
Open Access URL: https://journals.aps.org/prl/pdf/10.1103/PhysRevLe...
Related URLs:
URI: https://livrepository.liverpool.ac.uk/id/eprint/3183326