Strong decays of higher excited heavy-light mesons in a chiral quark model

Abstract

The strong decay properties of the higher excited heavy-light mesons from the first radially excited states up to the first $F$-wave states are studied in a constituent quark model. It is found many missing excitations have good potentials to be found in future experiments for their narrow widths, some of them dominantly decay into the first orbital excitations rather than into ground states. In future observations, one should focus on the decay processes not only into the ground states, but also into the low-lying $P$-wave excitations with $J^P=0^{+},1^{+}$. Furthermore, the nature of the newly observed states $D_J(3000)$, $D_J^{\ast }(3000)$ and B(5970) is discussed. It is predicted that $D_J(3000)$ seems to be a partner of $D_{sJ}(3040)$, which could be identified as the high-mass mixed state $|2P_1{>}_L$ ($J^P=1^{+}$) via the $2^1{P}_1$-$2^3{P}_1$ mixing. The $D_J^{\ast }(3000)$ resonance seems to favor the $1^3{F}_4$ state, however, the quantum numbers $J^P=0^{+}$ and $2^{+}$ can not be excluded complectly, more experimental observations are needed to determine its $J^P$ values. The B(5970) resonance is most likely to be the $1^3{D}_3$ with $J^P=3^{-}$.

21 pages, 15 figures

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• Charmed baryon strong decays in a chiral quark model
• $D_{sJ}(2860)$ and $D_{sJ}(2715)$
• Strong decays of heavy-light mesons in a chiral quark model
• Canonical Interpretation of the D_{sJ}(2860) and D_{sJ}(2690)
• Newly observed D_{sJ}(3040) and the radial excitations of P-wave charmed-strange mesons
• Newly observed D(2550), D(2610), and D(2760) as 2S and 1D charmed mesons
• More kaonic bound states and a comprehensive interpretation of the D_{sJ} states
• Strong decays of the newly observed $D(2550)$, $D(2600)$, $D(2750)$, and $D(2760)$
• Identifying $D_{sJ}(2700)$ through its decay modes
• Understanding the charmed states recently observed by the LHCb and BaBar Collaborations in the quark model
• Possible 2S and 1D charmed and charmed-strange mesons
• Analysis of strong decays of the charmed mesons D(2550), D(2600), D(2750) and D(2760)

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• $B$ and $B_s$ Meson Spectroscopy
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• Strong and radiative decays of the doubly charmed baryons
• Mass spectra and strong decays of charmed and charmed-strange mesons
• Towards establishing an abundant $B$ and $B_s$ spectrum up to the second orbital excitations
• Toward establishing the low-lying $P$-wave ${\Sigma }_b$ states
• Study on $Z_{cs}$ and excited $B_s^0$ states in the chiral quark model
• Observation of new excited $B_s^0$ states
• Spectroscopic Assignments of the Excited $B$-Mesons
• Study of B, Bs mesons using heavy quark effective theory
• Toward establishing the low-lying $P$-wave excited ${\Sigma }_c$ baryon states
• QCD string in excited heavy-light mesons and heavy-quark hybrids
• The charmed mesons in the region above 3.0 GeV
• Strong decays of excited $2^{+}$ charmed mesons