Model-Independent Study of Structure in 𝐵+→𝐷+⁢𝐷−⁢𝐾+ Decays

LHCb collaboration, S. Playfer

Research output: Contribution to journal › Article › peer-review

Abstract / Description of output

The only anticipated resonant contributions to 𝐵+→𝐷+⁢𝐷−⁢𝐾+ decays are charmonium states in the 𝐷+⁢𝐷− channel. A model-independent analysis, using LHCb proton-proton collision data taken at center-of-mass energies of √𝑠=7, 8, and 13 TeV, corresponding to a total integrated luminosity of 9  fb−1, is carried out to test this hypothesis. The description of the data assuming that resonances only manifest in decays to the 𝐷+⁢𝐷− pair is shown to be incomplete. This constitutes evidence for a new contribution to the decay, potentially one or more new charm-strange resonances in the 𝐷−⁢𝐾+ channel with masses around 2.9  GeV/⁢𝑐2.
Original languageEnglish
Article number242001
Pages (from-to)1-10
Number of pages10
JournalPhysical Review Letters
Issue number24
Publication statusPublished - 7 Dec 2020


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