The radiative decays $B_c^{\ast \pm }\to B_c^{\pm }\gamma$ with QCD sum rules

Abstract

In this article, we calculate the $B_c^{\ast }\to B_c$ electromagnetic form-factor with the three-point QCD sum rules, then study the radiative decays $B_c^{\ast \pm }\to B_c^{\pm }\gamma$. Experimentally, we can study the radiative transitions using the decay cascades $B_c^{\ast \pm }\to B_c^{\pm }\gamma \to J/\psi {\ell }^{\pm }{\bar{\nu }}_{\ell }\gamma \to {\mu }^{+}{\mu }^{-}{\ell }^{\pm }{\bar{\nu }}_{\ell }\gamma$ in the future at the LHCb.

12 pages, 9 figures. arXiv admin note: text overlap with arXiv:1307.2422

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Cited by in corpus (14)

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• Spectroscopy of ${\mathbf{B}}_{\mathbf{c}}$ mesons and the possibility of finding exotic ${\mathbf{B}}_{\mathbf{c}}$-like structures
• Towards the discovery of novel $B_c$ states: radiative and hadronic transitions
• Magnetic Dipole Transitions of $B_c$ and $B_c^{\ast }$ mesons in the Relativistic Independent Quark Model
• The $B_c$ meson and its scalar cousin with the QCD sum rules
• $B_c$ meson spectroscopy motivated by general features of pNRQCD
• The Electromagnetic Decays of $B_c^{\pm }(2S)$
• Analysis of hadronic coupling constants $G_{B_c^{\ast }{B}_c{\rm Y}}$, $G_{B_c^{\ast }{B}_{c}J/\psi }$, $G_{B_c{B}_c{\rm Y}}$ and $G_{B_c{B}_{c}J/\psi }$ with QCD sum rules
• Analysis of the axialvector $B_c$-like tetraquark states with the QCD sum rules
• Systematic analysis of the form factors of $B_c\to {\eta }_c$, $J/\psi$ and corresponding weak decays
• Electromagnetic transitions of $(b\bar{c})$ bound system
• Searching $B_c^{\ast }$ via conservation laws
• Analysis of the electromagnetic form factors and the radiative decays of the vector heavy-light mesons
• The ${\rm Y}(nS)$ $\to$ $B_c^{\ast }\pi$, $B_c^{\ast }K$ decays with perturbative QCD approach