Structure of the $(0^{+},1^{+})$ mesons $B_{s0}$ and $B_{s1}$, and the strong coupling constants $g_{B_{s0}BK}$ and $g_{B_{s1}{B}^{\ast }K}$

Abstract

In this article, we take the point of view that the bottomed $(0^{+},1^{+})$ mesons $B_{s0}$ and $B_{s1}$ are the conventional $b\bar{s}$ meson, and calculate the strong coupling constants $g_{B_{s0}BK}$ and $g_{B_{s1}{B}^{\ast }K}$ with the light-cone QCD sum rules. The numerical values of strong coupling constants $g_{B_{s1}{B}^{\ast }K}$ and $g_{B_{s0}BK}$ are very large, and support the hadronic dressing mechanism. Just like the scalar mesons $f_0(980)$, $a_0(980)$, $D_{s0}$ and axial-vector meson $D_{s1}$, the $(0^{+},1^{+})$ bottomed mesons $B_{s0}$ and $B_{s1}$ may have small $b\bar{s}$ kernels of the typical $b\bar{s}$ meson size, the strong couplings to the hadronic channels (or the virtual mesons loops) may result in smaller masses than the conventional $b\bar{s}$ mesons in the potential quark models, and enrich the pure $b\bar{s}$ states with other components.

16 pages, 3 figures, third version, add two sum rules in the heavy quark limit

References in corpus (8)

• Dynamically generated 1^+ heavy mesons
• Structure of the axial-vector meson $D_{s1}(2460)$ and the strong coupling constant $g_{D_{s1}{D}^{\ast }K}$ with the light-cone QCD sum rules
• Two topics for a discussion on the $b\bar{s}$ and $b\bar{q}$ systems
• The chiral transitions in heavy-light mesons
• B meson spectroscopy
• Why there is no spin-orbit inversion in heavy-light mesons?
• Strong decays $B_{s0}\to B_s\pi$ and $B_{s1}\to B_s^{\ast }\pi$ with light-cone QCD sum rules
• Static and dynamic properties of hadronic systems with heavy quarks b and c

Cited by in corpus (3)

• Molecular structure of the Bs0*(5725) and Bs1(5778) bottom-strange mesons
• Strong decays $B_{s0}\to B_s\pi$ and $B_{s1}\to B_s^{\ast }\pi$ with light-cone QCD sum rules
• Radiative decays of the $(0^{+},1^{+})$ strange-bottom mesons