Observation of D0 Meson Decays to π+π-μ+μ- and K+K-μ+μ- Final States

(LHCb Collaboration)

Research output: Contribution to journalArticle

15 Scopus citations

Abstract

The first observation of the D0→π+π-μ+μ- and D0→K+K-μ+μ- decays is reported using a sample of proton-proton collisions collected by LHCb at a center-of-mass energy of 8 TeV, and corresponding to 2 fb-1 of integrated luminosity. The corresponding branching fractions are measured using as normalization the decay D0→K-π+[μ+μ-]ρ0/ω, where the two muons are consistent with coming from the decay of a ρ0 or ω meson. The results are B(D0→π+π-μ+μ-)=(9.64±0.48±0.51±0.97)×10-7 and B(D0→K+K-μ+μ-)=(1.54±0.27±0.09±0.16)×10-7, where the uncertainties are statistical, systematic, and due to the limited knowledge of the normalization branching fraction. The dependence of the branching fraction on the dimuon mass is also investigated.

Original languageEnglish (US)
Article number181805
JournalPhysical Review Letters
Volume119
Issue number18
DOIs
StatePublished - Oct 31 2017

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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