Improved limit on the branching fraction of the rare decay <i>K</i><SUP>0</SUP><sub>S</sub> → μ<SUP>+</SUP>μ<SUP>-</SUP>



Aaij, R, Adeva, B, Adinolfi, M, Ajaltouni, Z, Akar, S, Albrecht, J, Alessio, F, Alexander, M, Ali, S, Alkhazov, G
et al (show 759 more authors) (2017) Improved limit on the branching fraction of the rare decay <i>K</i><SUP>0</SUP><sub>S</sub> → μ<SUP>+</SUP>μ<SUP>-</SUP>. EUROPEAN PHYSICAL JOURNAL C, 77 (10). 678-.

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Abstract

A search for the decay K S 0 → μ + μ - is performed, based on a data sample of proton-proton collisions corresponding to an integrated luminosity of 3 fb - 1 , collected by the LHCb experiment at centre-of-mass energies of 7 and 8 TeV . The observed yield is consistent with the background-only hypothesis, yielding a limit on the branching fraction of B ( K S 0 → μ + μ - ) < 0.8 ( 1.0 ) × 10 - 9 at 90 % ( 95 % ) confidence level. This result improves the previous upper limit on the branching fraction by an order of magnitude.

Item Type: Article
Additional Information: All figures and tables, along with any supplementary material and additional information, are available at https://lhcbproject.web.cern.ch/lhcbproject/Publications/LHCbProjectPublic/LHCb-PAPER-2017-009.html
Uncontrolled Keywords: LHCb Collaboration
Depositing User: Symplectic Admin
Date Deposited: 12 Jan 2018 12:27
Last Modified: 10 Feb 2024 14:08
DOI: 10.1140/epjc/s10052-017-5230-x
Related URLs:
URI: https://livrepository.liverpool.ac.uk/id/eprint/3015946