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Article
Report number arXiv:2009.00025 ; LHCb-PAPER-2020-024 ; CERN-EP-2020-158
Title A model-independent study of resonant structure in B+D+DK+ decays
Author(s) LHCb Collaboration  Mostra tots els 982 autors
Publication 2020-12-07
Imprint 2020-08-31
Number of pages 17
Note 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
In: Phys. Rev. Lett. 125 (2020) 242001
DOI 10.1103/PhysRevLett.125.242001
Subject category hep-ex ; Particle Physics - Experiment
Accelerator/Facility, Experiment CERN LHC ; LHCb
Abstract The only anticipated resonant contributions to B+D+DK+ 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 fb1, 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 DK+ channel with masses around 2.9 GeV/c2.
Copyright/License publication: © 2020-2024 CERN (License: CC-BY-4.0), sponsored by SCOAP³
preprint: © 2020-2024 CERN (License: CC-BY-4.0)



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