2020/09/30 by LHCb collaboration, R. Aaij, C. Abellán Beteta +963 · 1 citation
Physics and Astronomy · #hep-ex
paper · pdf · doi:10.1103/physrevlett.125.242001
published as Phys. Rev. Lett. 125, 242001 (2020) · All figures and tables, along with any supplementary material and additional information, are available at https://cern.ch/lhcbproject/Publications/p/LHCb-PAPER-2020-024.html (LHCb public pages). v2 adds arXiv identifier for simultaneously-submitted LHCb-PAPER-2020-025. v3 matches published version
arxiv created 2020/12/17 · arxiv updated 2020/12/18
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 centre-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.