2020/08/31 by LHCb collaboration, R. Aaij, C. Abellán Beteta +963 · 1 voice
Physics and Astronomy · #hep-ex
paper · pdf · doi:10.1103/physrevd.102.112003
published as Phys. Rev. D 102, 112003 (2020) · All figures and tables, along with any supplementary material and additional information, are available at https://cern.ch/lhcbproject/Publications/p/LHCb-PAPER-2020-025.html (LHCb public pages). v2 adds arXiv identifier for simultaneously-submitted LHCb-PAPER-2020-024. v3 matches published version
arxiv published 2020/08/31 · arxiv created 2020/12/17 · arxiv updated 2020/12/18
Results are reported from an amplitude analysis of the B+→ D+D-K+ decay. The analysis is carried out using LHCb proton-proton collision data taken at √(s)=7,8, and 13 TeV, corresponding to a total integrated luminosity of 9 fb-1. In order to obtain a good description of the data, it is found to be necessary to include new spin-0 and spin-1 resonances in the D-K+ channel with masses around 2.9 GeV/c2, and a new spin-0 charmonium resonance in proximity to the spin-2 χc2(3930) state. The masses and widths of these resonances are determined, as are the relative contributions of all components in the amplitude model, which additionally include the vector charmonia ψ(3770), ψ(4040), ψ(4160) and ψ(4415) states and a nonresonant component.