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Article
Report number arXiv:2406.03156 ; LHCb-PAPER-2023-047 ; CERN-EP-2024-096
Title Observation of New Charmonium or Charmoniumlike States in B+D*±DK+ Decays
Related titleObservation of new charmonium(-like) states in B+D±DK+ decays
Author(s) LHCb Collaboration  Visualizza tutti i 1095 autori
Corporate Author(s) LHCb Collaboration
Publication 2024-09-27
Imprint 05 Jun 2024
Number of pages 14
Note All figures and tables, along with any supplementary material and additional information, are available at https://cern.ch/lhcbproject/Publications/p/LHCb-PAPER-2023-047.html (LHCb public pages)
In: Phys. Rev. Lett. 133 (2024) 131902
DOI 10.1103/PhysRevLett.133.131902 (publication)
Subject category Particle Physics - Experiment
Accelerator/Facility, Experiment CERN LHC ; LHCb
Free keywords flavor physics ; B physics ; quarkonium ; spectroscopy
Abstract A study of resonant structures in B+D+DK+ and B+DD+K+ decays is performed, using proton-proton collision data at centre-of-mass energies of s=7,8, and 13TeV recorded by the LHCb experiment, corresponding to an integrated luminosity of 9 fb1. A simultaneous amplitude fit is performed to the two channels with contributions from resonances decaying to DD+ and D+D states linked by C-parity. This procedure allows the C-parities of resonances in the D±D mass spectra to be determined. Four charmonium(-like) states are observed decaying into D±D: ηc(3945), hc(4000), χc1(4010) and hc(4300), with quantum numbers JPC equal to 0+, 1+, 1++ and 1+, respectively. At least three of these states have not been observed previously. In addition, the existence of the Tˉcˉs0(2870)0 and Tˉcˉs1(2900)0 resonances in the DK+ mass spectrum, already observed in the B+D+DK+ decay, is confirmed in a different production channel.
Copyright/License Preprint: © 2024 CERN (License: CC-BY-4.0)
Publication: © 2024 CERN (License: CC BY 4.0), sponsored by SCOAP³



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 Record creato 2024-06-05, modificato l'ultima volta il 2024-10-18


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