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Updated: Nov 25, 2025

Setting Limits on Supersymmetry Using Simplified Models
Published on: November 15, 2013
Constraints on the K_{S}^{0}→μ^{+}μ^{-} Branching Fraction
R Aaij1, C Abellán Beteta2, T Ackernley3
1Nikhef National Institute for Subatomic Physics, Amsterdam, Netherlands.
Abstract:
A search for the decay K_{S}^{0}→μ^{+}μ^{-} is performed using proton-proton collision data, corresponding to an integrated luminosity of 5.6 fb^{-1} and collected with the LHCb experiment during 2016, 2017, and 2018 at a center-of-mass energy of 13 TeV. The observed signal yield is consistent with zero, yielding an upper limit of B(K_{S}^{0}→μ^{+}μ^{-})<2.2×10^{-10} at 90% C.L.. The limit reduces to B(K_{S}^{0}→μ^{+}μ^{-})<2.1×10^{-10} at 90% C.L. once combined with the result from data taken in 2011 and 2012.
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