Searches for 25 rare and forbidden decays of D + and Ds+ mesons

The LHCb collaboration

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A search is performed for rare and forbidden charm decays of the form D(s)+→h±ℓ+ℓ(′)∓, where h± is a pion or kaon and ℓ(′)± is an electron or muon. The measurements are performed using proton-proton collision data, corresponding to an integrated luminosity of 1.6 fb−1, collected by the LHCb experiment in 2016. No evidence is observed for the 25 decay modes that are investigated and 90 % confidence level limits on the branching fractions are set between 1.4 × 10−8 and 6.4 × 10−6. In most cases, these results represent an improvement on existing limits by one to two orders of magnitude. [Figure not available: see fulltext.]

Idioma originalAnglès
Número d’article44
RevistaJournal of High Energy Physics
Estat de la publicacióPublicada - de juny 2021


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