Strong and radiative decays of the $D_{s0}^{\ast }(2317)$ and $D_{s1}(2460)$

Abstract

Since their discovery in 2003, the open charm states $D_{s0}^{\ast }(2317)$ and $D_{s1}(2460)$ provide a challenge to the conventional quark model. In recent years, theoretical evidence has been accumulated for both states in favor of a predominantly $DK$ and $D^{\ast }K$ molecular nature, respectively. However, a direct experimental proof of this hypothesis still needs to be found. Since radiative decays are generally believed to be sensitive to the inner structure of the decaying particles, we study in this work the radiative and strong decays of both the $D_{s0}^{\ast }(2317)$ and $D_{s1}(2460)$, as well as of their counterparts in the bottom sector. While the strong decays are indeed strongly enhanced for molecular states, the radiative decays are of similar order of magnitude in different pictures. Thus, the experimental observable that allows one to conclusively quantify the molecular components of the $D_{s0}^{\ast }(2317)$ and $D_{s1}(2460)$ is the hadronic width, and not the radiative one, in contradistinction to common belief. We also find that radiative decays of the sibling states in the bottom sector are significantly more frequent than the hadronic ones. Based on this, we identify their most promising discovery channels.

References in corpus (21)

• 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
• $D_s$ mesons with $DK$ and $D^{\ast }K$ scattering near threshold
• Axial Resonances in the Open and Hidden Charm Sectors
• 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)
• Implications of heavy quark spin symmetry on heavy meson hadronic molecules
• Possible S-wave Bound-States of Two Pseudoscalar Mesons
• Two-photon decays of hadronic molecules
• Light meson mass dependence of the positive parity heavy-strange mesons
• Molecular structure of the Bs0*(5725) and Bs1(5778) bottom-strange mesons
• Radiative decays of the $D_{s0}(2317)$, $D_{s1}(2460)$ and the related strong coupling constants
• Structure of the $(0^{+},1^{+})$ mesons $B_{s0}$ and $B_{s1}$, and the strong coupling constants $g_{B_{s0}BK}$ and $g_{B_{s1}{B}^{\ast }K}$
• Radiative decay of the dynamically generated open and hidden charm scalar meson resonances D_{s0}^*(2317) and X(3700)
• Near Mass Degeneracy in the Scalar Meson Sector: Implications for $B_{(s)0}^{\ast }$ and $B_{(s)1}^{\prime }$ Mesons
• Mass splittings within heavy baryon isospin multiplets in chiral perturbation theory
• Reanalysis of the (0^+,1^+) states B_{s0} and B_{s1} with QCD sum rules
• Radiative decays of the $(0^{+},1^{+})$ strange-bottom mesons

Cited by in corpus (22)

• Chiral perturbation theory for heavy hadrons and chiral effective field theory for heavy hadronic molecules
• Towards a theory of hadron resonances
• What can radiative decays of the X(3872) teach us about its nature?
• Novel coupled channel framework connecting quark model and lattice QCD: an investigation on near-threshold $D_s$ states
• A Review on Partial-wave Dynamics with Chiral Effective Field Theory and Dispersion Relation
• Update on strong and radiative decays of the $D_{s0}^{\ast }(2317)$ and $D_{s1}(2460)$ and their bottom cousins
• Coupled-channel dynamics with chiral long-range forces in the open-charm sector of QCD
• $D_{s0}^{\ast \pm }(2317)$ and $KD$ scattering from $B_s^0$ decay
• Isospin-conserving hadronic decay of the $D_{s1}(2460)$ into $D_s{\pi }^{+}{\pi }^{-}$
• Production of $P-$wave charmed and charmed-strange mesons in pion and kaon induced reactions
• Do near-threshold molecular states mix with neighbouring $\bar{Q}Q$ states?
• Electric transitions of the charmed-strange mesons in a relativistic quark model
• Search for a doubly-charged $DDK$ bound state in ${\rm Y}(1S,2S)$ inclusive decays and via direct production in $e^{+}{e}^{-}$ collisions at $\sqrt{s}$ = 10.520, 10.580, and 10.867 GeV
• Measurement of the Born Cross Sections for $e^{+}{e}^{-}\to D_s^{+}{D}_{s1}(2460{)}^{-}+c.c.$ and $e^{+}{e}^{-}\to D_s^{\ast +}{D}_{s1}(2460{)}^{-}+c.c.$
• Masses and radiative decay widths of the $D_{s0}^{\ast }(2317)$ and $D_{s1}^{\prime }(2460)$ and their bottom analogs
• Reanalysis of lattice QCD spectra leading to the $D_{s0}^{\ast }(2317)$ and $D_{s1}^{\ast }(2460)$
• Status and perspectives for $\bar{P}ANDA$ at FAIR
• 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
• Perspectives of Open Charm Physics at $\bar{P}ANDA$