The Rare Radiative Annihilation Decays ${\bar{B}}_{s,d}^0\to J/\psi \gamma$

Abstract

We investigate the physics potential of the annihilation decays ${\bar{B}}_{s,d}^0\to J/\psi$ $\gamma$ in the Standard Model and beyond. In naive factorization approach, the branching ratios are estimated to be $\mathcal{B}({\bar{B}}_s^0\to J/\psi \gamma )=1.40\times 10^{-6}$ and $\mathcal{B}({\bar{B}}_d^0\to J/\psi \gamma )=5.29\times 10^{-8}$. In the framework of QCD factorization, we compute the non-factorizable corrections and get $\mathcal{B}({\bar{B}}_s^0\to J/\psi \gamma )=2.11\times 10^{-7}$, $\mathcal{B}({\bar{B}}_d^0\to J/\psi \gamma )=7.65\times 10^{-9}$. Future measurements of these decays would be useful for testing the factorization frameworks. The smallness of these decays in the SM make them sensitive probes of New Physics. As an example, we will consider the possible admixture of (V+A) charge current to the standard (V-A) current. This admixture will give significant contributions to the decays.

13pages, 3figures

References in corpus (1)

• B->gamma e nu Transitions from QCD Sum Rules

Cited by in corpus (12)

• Polarizations in decays B_{u,d}\to VV and possible implications for R-parity violating SUSY
• Annihilation-Type Charmless Radiative Decays of B Meson in Non-universal Z^\prime Model
• The puzzles in $B\to \pi \pi$ and $\pi K$ decays: possible implications for R-parity violating supersymmetry
• Annihilation Type Radiative Decays of $B$ Meson in Perturbative QCD Approach
• Annihilation type rare radiative $B_{(s)}\to V\gamma$ decays
• Search for the decay B0 --> J/psi gamma
• Search for the rare decays $B^0\to J/\psi \gamma$ and $B_s^0\to J/\psi \gamma$
• Search for $B^0\to X(3872)\gamma$
• Novel nonperturbative approach for radiative ${\bar{B}}^0({\bar{B}}_s^0)\to J/\psi \gamma$ decays
• Understanding B -->J/Ψϕin the Standard Model
• Testing the chirality of b to u current with B^0 \to ρ^ - \ell^+ ν
• Recent Results on Charmonia- and Bottomonia-like Particles at Belle