Strong and electromagnetic decays of the radially excited $D_s$ and $B_s$ mesons in light cone QCD sum rules

Abstract

Recently, LHCb Collaboration announced the discovery of radial excitations of $D_s$ and $B_s$ mesons. In present work, we calculate the most promising strong and electromagnetic decay widths of radially excited $D_s(2S)$ and $B_s(2S)$ mesons within the light cone QCD sum rules method.

References in corpus (22)

• New Results on B->pi, K, eta Decay Formfactors from Light-Cone Sum Rules
• Observation of a Narrow Meson Decaying to Ds+pi0 at a Mass of 2.32 GeV/c^2
• Observation of a Narrow Resonance of Mass 2.46 GeV/c^2 Decaying to D_s^*+ pi^0 and Confirmation of the D_sJ^* (2317) State
• Higher Twist Distribution Amplitudes of Vector Mesons in QCD: Formalism and Twist Three Distributions
• $D^{\ast }D\pi$ and $B^{\ast }B\pi$ couplings in QCD
• Higher-Twist Distribution Amplitudes of the K Meson in QCD
• Observed D_s(2317) and tentative D(2100-2300) as the charmed cousins of the light scalar nonet
• The Z(4430) and a New Paradigm for Spin Interactions in Tetraquarks
• Photon Distribution Amplitudes in QCD
• Properties of Excited Charm and Charm-Strange Mesons
• Comment on the new $D_s^{(\ast )+}{\pi }^0$ resonances
• Observation of Orbitally Excited B_s Mesons
• Determination of the magnetic susceptibility of the quark condensate using radiative heavy meson decays
• Observation and properties of the orbitally excited B_{s2}* Meson
• Study of orbitally excited $B$ mesons and evidence for a new $B\pi$ resonance
• First observation of the decay $B_{s2}^{\ast }(5840{)}^0\to B^{\ast +}{K}^{-}$ and studies of excited $B_s$ mesons
• Radiative $B^{\ast }B\gamma$ and $D^{\ast }D\gamma$ coupling constants in light cone QCD sum rules
• Radiative $B^{\ast }\to B\gamma$ and $D^{\ast }\to D\gamma$ decays in light cone QCD sum rules
• Observation of a new excited $D_s^{+}$ meson in $B^0\to D^{-}{D}^{+}{K}^{+}{\pi }^{-}$ decays
• Radial excitations of heavy-light mesons from QCD sum rules
• The $D^{\ast }D\pi$ and $B^{\ast }B\pi$ couplings from light-cone sum rules
• Studies of B${}_{s2}^{\ast }(5840{)}^0$ and B${}_{s1}(5830{)}^0$ mesons including the observation of the B${}_{s2}^{\ast }(5840{)}^0\to$ B${}^0$K${}_{\mathrm{S}}^0$ decay in proton-proton collisions at $\sqrt{s}=$ 8 TeV