Update on strong and radiative decays of the $D_{s0}^{\ast }(2317)$ and $D_{s1}(2460)$ and their bottom cousins

Abstract

The isospin breaking and radiative decay widths of the positive-parity charm-strange mesons, $D_{s0}^{\ast }$ and $D_{s1}$, and their predicted bottom-strange counterparts, $B_{s0}^{\ast }$ and $B_{s1}$, as hadronic molecules are revisited. This is necessary, since the $B_{s0}^{\ast }$ and $B_{s1}$ masses used in Eur. Phys. J. A 50 (2014) 149 were too small, in conflict with the heavy quark flavour symmetry. Furthermore, not all isospin breaking contributions were considered. We here present a method to restore heavy quark flavour symmetry, correcting the masses of $B_{s0}^{\ast }$ and $B_{s1}$, and include the complete isospin breaking contributions up to next-to-leading order. With this we provide updated hadronic decay widths for all of $D_{s0}^{\ast }$, $D_{s1}$, $B_{s0}^{\ast }$ and $B_{s1}$. Results for the partial widths of the radiative deays of $D_{s0}^{\ast }(2317)$ and $D_{s1}(2460)$ are also renewed in light of the much more precisely measured $D^{\ast +}$ width. We find that $B_s{\pi }^0$ and $B_s\gamma$ are the preferred channels for searching for $B_{s0}^{\ast }$ and $B_{s1}$, respectively.

5 pages, 2 figures

References in corpus (17)

• Dynamically Generated Open and Hidden Charm Meson Systems
• Dynamically generated 0^+ heavy mesons in a heavy chiral unitary approach
• Strong and radiative decays of the Ds0*(2317) meson in the DK-molecule picture
• Dynamically generated 1^+ heavy mesons
• Radiative and isospin-violating decays of Ds mesons in the hadrogenesis conjecture
• D* K molecular structure of the Ds1(2460) meson
• Subleading contributions to the width of the D_{s0}*(2317)
• Two-photon decays of hadronic molecules
• Light meson mass dependence of the positive parity heavy-strange mesons
• Strong and radiative decays of the $D_{s0}^{\ast }(2317)$ and $D_{s1}(2460)$
• Investigation of a0-f0 mixing
• $DK$ $I=0,$ $D\bar{K}$ $I=0,1$ scattering and the $D_{s0}^{\ast }(2317)$ from lattice QCD
• Molecular structure of the Bs0*(5725) and Bs1(5778) bottom-strange mesons
• Radiative decay of the dynamically generated open and hidden charm scalar meson resonances D_{s0}^*(2317) and X(3700)
• Predictions for the beauty meson spectrum
• Role of the rho meson in the description of pion electroproduction experiments at JLab
• Chiral corrections to the vector and axial couplings of quarks and baryons

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• Production of $D_{s0}^{\ast }(2317)$ and $D_{s1}(2460)$ in $B$ decays as $D^{(\ast )}K$ and $D_s^{(\ast )}\eta$ molecules
• On the ${\eta }_1(1855)$, ${\pi }_1(1400)$ and ${\pi }_1(1600)$ as dynamically generated states and their SU(3) partners
• Isospin-conserving hadronic decay of the $D_{s1}(2460)$ into $D_s{\pi }^{+}{\pi }^{-}$
• Do near-threshold molecular states mix with neighbouring $\bar{Q}Q$ states?
• Productions of $D_{s0}^{\ast }(2317)$ and $D_{s1}(2460)$ in $B_{(s)}$ and ${\Lambda }_b({\Xi }_b)$ decays
• Masses and radiative decay widths of the $D_{s0}^{\ast }(2317)$ and $D_{s1}^{\prime }(2460)$ and their bottom analogs
• Decay properties of $D_{s0}^{\ast }(2317{)}^{+}$ as a conventional $c\bar{s}$ meson
• The pseudoscalar meson and baryon octet interaction with strangeness $S=-2$ in the unitary coupled-channel approximation
• Observation of the radiative decay $D_s(2317{)}^{+}\to D_s^{\ast }\gamma$
• What can we learn from the radiative decays of the $D_{s1}(2460)$ meson?
• Exotic hadrons associated with $b$-quark
• Radiative decays of hadronic molecules: From confusion to inspiration