Constraints on the K 0 S → μ + μ − Branching Fraction

LHCb Collaboration

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Abstract

A search for the decay KS0→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(KS0→μ+μ-)<2.2×10-10 at 90% C.L.. The limit reduces to B(KS0→μ+μ-)<2.1×10-10 at 90% C.L. once combined with the result from data taken in 2011 and 2012.

Original languageEnglish
Article number231801
Number of pages10
JournalPhysical Review Letters
Volume125
Issue number23
DOIs
Publication statusPublished - 2-Dec-2020

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