Observation of New Charmonium or Charmoniumlike States in B+ →D∗±D∓K+ Decays
(2024) In Physical Review Letters 133(13).- Abstract
- A study of resonant structures in B+→D∗+D-K+ and B+→D∗-D+K+ decays is performed, using proton-proton collision data at center-of-mass energies of s=7, 8, and 13 TeV recorded by the LHCb experiment, corresponding to an integrated luminosity of 9 fb-1. A simultaneous amplitude fit is performed to the two channels with contributions from resonances decaying to D∗-D+ 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 or charmoniumlike 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... (More)
- A study of resonant structures in B+→D∗+D-K+ and B+→D∗-D+K+ decays is performed, using proton-proton collision data at center-of-mass energies of s=7, 8, and 13 TeV recorded by the LHCb experiment, corresponding to an integrated luminosity of 9 fb-1. A simultaneous amplitude fit is performed to the two channels with contributions from resonances decaying to D∗-D+ 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 or charmoniumlike 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 Tc¯s¯0∗(2870)0 and Tc¯s¯1∗(2900)0 resonances in the D-K+ mass spectrum, already observed in the B+→D+D-K+ decay, is confirmed in a different production channel. © 2024 CERN. (Less)
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https://lup.lub.lu.se/record/daae5b66-e8a0-4945-bca6-1d73aab7c6d6
- author
- Aaij, R. ; Ruiz-Vidal, Joan LU and Zunica, G.
- author collaboration
- organization
- publishing date
- 2024
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- Center-of-mass energies, Centre-of-mass energies, Charmonium, Integrated luminosity, Mass spectra, Production channels, Proton proton collisions, Quantum numbers, Resonant structures, Two channel, article, controlled study, drug therapy, special situation for pharmacovigilance
- in
- Physical Review Letters
- volume
- 133
- issue
- 13
- article number
- 131902
- publisher
- American Physical Society
- external identifiers
-
- scopus:85206123325
- ISSN
- 1079-7114
- DOI
- 10.1103/PhysRevLett.133.131902
- language
- English
- LU publication?
- yes
- id
- daae5b66-e8a0-4945-bca6-1d73aab7c6d6
- date added to LUP
- 2025-10-14 15:19:16
- date last changed
- 2025-10-14 15:20:18
@article{daae5b66-e8a0-4945-bca6-1d73aab7c6d6, abstract = {{A study of resonant structures in B+→D∗+D-K+ and B+→D∗-D+K+ decays is performed, using proton-proton collision data at center-of-mass energies of s=7, 8, and 13 TeV recorded by the LHCb experiment, corresponding to an integrated luminosity of 9 fb-1. A simultaneous amplitude fit is performed to the two channels with contributions from resonances decaying to D∗-D+ 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 or charmoniumlike 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 Tc¯s¯0∗(2870)0 and Tc¯s¯1∗(2900)0 resonances in the D-K+ mass spectrum, already observed in the B+→D+D-K+ decay, is confirmed in a different production channel. © 2024 CERN.}}, author = {{Aaij, R. and Ruiz-Vidal, Joan and Zunica, G.}}, issn = {{1079-7114}}, keywords = {{Center-of-mass energies; Centre-of-mass energies; Charmonium; Integrated luminosity; Mass spectra; Production channels; Proton proton collisions; Quantum numbers; Resonant structures; Two channel; article; controlled study; drug therapy; special situation for pharmacovigilance}}, language = {{eng}}, number = {{13}}, publisher = {{American Physical Society}}, series = {{Physical Review Letters}}, title = {{Observation of New Charmonium or Charmoniumlike States in B+ →D∗±D∓K+ Decays}}, url = {{http://dx.doi.org/10.1103/PhysRevLett.133.131902}}, doi = {{10.1103/PhysRevLett.133.131902}}, volume = {{133}}, year = {{2024}}, }