Nonleptonic $B\to D^{(\ast )}{D}_{sJ}^{(\ast )}$ decays and the nature of the orbitally excited charmed-strange mesons

Abstract

The Belle Collaboration has recently reported a study of the decays $B\to D_{s1}(2536{)}^{+}{\bar{D}}^{(\ast )}$ and has given also estimates of relevant ratios between branching fractions of decays $B\to D^{(\ast )}{D}_{sJ}^{(\ast )}$ providing important information to check the structure of the $D_{s0}^{\ast }(2317)$, $D_{s1}(2460)$ and $D_{s1}(2536)$ mesons. The disagreement between experimental data and Heavy Quark Symmetry has been used as an indication that $D_{s0}^{\ast }(2317)$ and $D_{s1}(2460)$ mesons could have a more complex structure than the canonical $c\bar{s}$ one. We analyze these ratios within the framework of a constituent quark model, which allows us to incorporate the effects given by finite $c$-quark mass corrections. Our findings are that while the $D_{s1}(2460)$ meson could have a sizable non-$q\bar{q}$ component, the $D_{s0}^{\ast }(2317)$ and $D_{s1}(2536)$ mesons seem to be well described by a pure $q\bar{q}$ structure.

arXiv comment13 pages, 1 figure

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Cited by in corpus (13)

• A review of the open charm and open bottom systems
• Chiral perturbation theory for heavy hadrons and chiral effective field theory for heavy hadronic molecules
• Bottomonium spectrum revisited
• Masses and decay constants of the $D_{s0}^{\ast }(2317)$ and $D_{s1}(2460)$ from $N_f=2$ lattice QCD close to the physical point
• Constituent quark model description of charmonium phenomenology
• Molecular components in P-wave charmed-strange mesons
• Contribution of constituent quark model $c\bar{s}$ states to the dynamics of the $D_{s0}^{\ast }(2317)$ and $D_{s1}(2460)$ resonances
• Charmed-strange Meson Spectrum: Old and New Problems
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• B decays into radially excited charmed mesons
• Productions of $D_{s0}^{\ast }(2317)$ and $D_{s1}(2460)$ in $B_{(s)}$ and ${\Lambda }_b({\Xi }_b)$ decays
• Parton distribution functions of ground state mesons composed of $c$ or $b$ quarks
• Probing $D_{s0}^{\ast }(2317)$ in the decays of $B$ to two charmed mesons