Understanding the nature of $D_s(2317)$ and $D_s(2460)$ through nonleptonic B Decays

Abstract

We consider the nonleptonic B decays $B\to D^{(\ast )}{D}_s(2317)$ and $B\to D^{(\ast )}{D}_s(2460)$, involving the newly discovered $D_s(2317)$ and the $D_s(2460)$ states. We find that experiments indicate disagreement with model calculations of their properties and/or breakdown of the factorization assumption for these decays . We point out that decays involving $B_s$ mesons where the $D_s$ resonances can be produced via the weak decay of the $b$ quark can provide further information about the nature of these newly discovered states. We also propose a model to calculate the two body nonleptonic decays $B\to D^{(\ast )}{D}_s(2317)(D_s(2460))$, if the $D_s(2317)$ and $D_s(2460)$ are interpreted as $DK$ and $D^{\ast }K$ molecules.

14 pages LaTeX; additional reference, notational corrections and minor clarifications of text

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• Exclusive semileptonic B_s decays to excited D_s mesons: Search of D_{sJ}(2317) and D_{sJ}(2460)
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• Search of $D_{sJ}^{\ast }$ mesons in $B$ meson decays
• Quasi-two-body decays $B_{(s)}\to P{D}_0^{\ast }(2400)\to PD\pi$ in the perturbative QCD approach
• Nonleptonic Weak Decays of B to D_s and D mesons
• Decay constants of P-wave heavy-light mesons from unquenched lattice QCD
• Nonleptonic $B\to D^{(\ast )}{D}_{sJ}^{(\ast )}$ decays and the nature of the orbitally excited charmed-strange mesons
• Measurements of $B\to \bar{D}{D}_{s0}^{\ast +}(2317)$ decay rates and a search for isospin partners of the $D_{s0}^{\ast +}(2317)$
• Decay Constants of $D_{sJ}^{\ast }$(2317) and $D_{sJ}$(2460)
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• Nonleptonic ${\Lambda }_b$ decays to $D_s(2317)$, $D_s(2460)$ and other final states in Factorization
• Production of $P-$wave charmed and charmed-strange mesons in pion and kaon induced reactions
• Study of the decays B->D_s1(2536)+ anti-D(*)
• Colour rearrangements in B-meson decays
• Electric transitions of the charmed-strange mesons in a relativistic quark model
• Production of the $D_{s0}(2317)$ and $D_{s1}(2460)$ by kaon-induced reactions on a proton target
• Predictions of α-decay half-lives for neutron-deficient nuclei with the aid of artificial neural network
• The $B^{+(0)}\to {\bar{D}}^{0(-)}{D}_{s0}^{\ast }(2317{)}^{+}$ decays and the molecular structure of $D_{s0}^{\ast }(2317)$