Strong decays of the newly observed $D(2550)$, $D(2600)$, $D(2750)$, and $D(2760)$

Abstract

The strong decay properties of the newly observed $D(2550)$, $D(2600)$, $D(2750)$ and $D(2760)$ are studied in a constituent quark model. It is predicted that the $D(2760)$ and $D(2750)$ seem to be two overlapping resonances. The $D(2760)$ could be identified as the $1^3{D}_3$ with $J^P=3^{-}$, while the $D(2750)$ is most likely to be the high-mass mixed state $|1{D_2}^{\prime }{>}_H$ ($J^P=2^{-}$) via the $1^1{D}_2$-$1^3{D}_2$ mixing. The $D(2600)$ favors the low-mass mixed state $|(SD{)}_1{>}_L$ $(J^P=1^{-})$ via the $1^3{D}_1$-$2^3{S}_1$ mixing. The $D(2550)$ as the $2^1{S}_0$ assignment bears controversies for its too broad width given in experiments.

8 pages, 5 figures; The review of the model is added. Some discussion of the $D(2750)$ is included

References in corpus (9)

• Observation of new resonances decaying to $D\pi$ and $D^{\ast }\pi$ in inclusive $e^{+}{e}^{-}$ collisions near $\sqrt{s}=$10.58 GeV
• Charmed baryon strong decays in a chiral quark model
• Strong decays of heavy-light mesons in a chiral quark model
• Canonical Interpretation of the D_{sJ}(2860) and D_{sJ}(2690)
• $D_{sJ}(2860)$ resonance and the $s_{\ell }^P={\frac{5}{2}}^{-}$ $c\bar{s}$ ($c\bar{q}$) doublet
• D_{sJ}(2860) as the first radial excitation of the D_{s0}^*(2317)
• Newly observed D(2550), D(2610), and D(2760) as 2S and 1D charmed mesons
• Identifying $D_{sJ}(2700)$ through its decay modes
• Interpretation of $D_{sJ}(2632{)}^{+}$, $D_{s1}(2700{)}^{\pm }$, $D_{sJ}^{\star }(2860{)}^{+}$ and $D_{sJ}(3040{)}^{+}$

Cited by in corpus (20)

• Strong and radiative decays of the low-lying $S$- and $P$-wave singly heavy baryons
• The newly observed open-charm states in quark model
• Excited bottom and bottom-strange mesons in the quark model
• Strong and radiative decays of the doubly charmed baryons
• Strong decays of higher excited heavy-light mesons in a chiral quark model
• Possible 2S and 1D charmed and charmed-strange mesons
• Understanding the charmed states recently observed by the LHCb and BaBar Collaborations in the quark model
• Analysis of strong decays of the charmed mesons D(2550), D(2600), D(2750) and D(2760)
• Mass spectra and strong decays of charmed and charmed-strange mesons
• Possible interpretation of the newly observed ${\Omega }_b$ states
• 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
• Angular momentum coefficients for meson strong decay and unquenched quark models
• Radiative decays of the charmed mesons in a modified relativistic quark model
• Toward establishing the low-lying $P$-wave excited ${\Sigma }_c$ baryon states
• Hadronic production of $D(2550)$, $D^{\ast }(2600)$, $D(2750)$, $D_1^{\ast }(2760)$ and $D_3^{\ast }(2760)$
• Dynamical mixing between $2^3{S}_1$ and $1^3{D}_1$ charmed mesons
• The charmed mesons in the region above 3.0 GeV
• Hadronic decays of the highly excited $2D$ $D_s$ resonances
• The newly observed state $D_{s0}(2590{)}^{+}$