Updated search for Bc+ decays to two charm mesons

A data set corresponding to an integrated luminosity of 9 fb(-1) of proton-proton collisions collected by the LHCb experiment has been analysed to search for D-(s)(()*())+ ((D) over bar)(*)0 decays. The decays are fully or partially reconstructed, where one or two (8) missing neutral pions or photons from the decay of an excited charm meson are allowed. Upper limits for the branching fractions, normalised to B+ decays to final states with similar topologies, are obtained for sixteen B-c(+) decay modes. For the decay B-c(+) -> D-s(+)(D) over bar (0), an excess with a significance of 3.4 standard deviations is found.

Automated summary

An analysis of data from the LHCb experiment has been conducted to search for D-(s)(()*())+ ((D) over bar)(*)0 decays, revealing an excess with a significance of 3.4 standard deviations for the decay B-c(+) -> D-s(+)(D) over bar (0) among sixteen B-c(+) decay modes.