Charmed-strange meson spectrum: Old and new problems
Abstract
The LHCb Collaboration has recently reported the observation for the first time of a spin-3 resonance in the heavy quark sector. They have shown that the D¯0K- structure seen in the Bs0→D¯0K-π+ reaction and with invariant mass 2.86 GeV is an admixture of a spin-1 and a spin-3 resonance. Motivated by the good agreement between our theoretical predictions some time ago and the properties extracted from the experiment of the Ds1 *(2860 ) and Ds3 *(2860 ) states, we perform an extension of the study of the strong decay properties of the DsJ *(2860 ) and present the same analysis for the Ds1 *(2700 ) and Ds J(3040 ) mesons. This provides a unified and simultaneous description of the three higher excited charmed-strange resonances observed until now. For completeness, we present theoretical results for masses and strong decays of the low-lying charmed-strange mesons and those experimental missing states which belong to the spin multiplets of the discovered Ds1 *(2700 ), DsJ *(2860 ) and Ds J(3040 ) resonances. The theoretical framework used is a constituent quark model which successfully describes hadron phenomenology from light to heavy quark sectors.
- Publication:
-
Physical Review D
- Pub Date:
- May 2015
- DOI:
- 10.1103/PhysRevD.91.094020
- arXiv:
- arXiv:1502.03827
- Bibcode:
- 2015PhRvD..91i4020S
- Keywords:
-
- 12.39.-x;
- 14.40.Lb;
- Phenomenological quark models;
- Charmed mesons;
- High Energy Physics - Phenomenology;
- High Energy Physics - Experiment;
- Nuclear Theory
- E-Print:
- 10 pages, 1 figure. arXiv admin note: text overlap with arXiv:1205.2215