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Title

Constraints on the KS0 →μ+μ- Branching Fraction

AuthorsLHCb Collaboration; García Martín, L.M.; Henry, L.; Jashal, B.; Martínez-Vidal, Fernando CSIC ORCID; Oyanguren, Arantza CSIC ORCID; Remón Alepuz, Clara; Ruiz Vidal, Joan; Sánchez Mayordomo, Carlos CSIC
Issue DateDec-2020
PublisherAmerican Physical Society
CitationPhysical Review Letters 125: 231801 (2020)
AbstractA 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.
Publisher version (URL)http://dx.doi.org/10.1103/PhysRevLett.125.231801
URIhttp://hdl.handle.net/10261/233176
Identifiersdoi: 10.1103/PhysRevLett.125.231801
issn: 1079-7114
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