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Annihilation Type Radiative Decays of B Meson in Perturbative QCD Approach

May, 2006
4 pages
Published in:
  • Phys.Rev.D 74 (2006) 097502
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Abstract:
With the perturbative QCD approach based on kTk_T factorization, we study the pure annihilation type radiative decays B0→ϕγB^0 \to \phi\gamma and B0→J/ψγB^0\to J/\psi \gamma. We find that the branching ratio of B0→ϕγB^0 \to \phi\gamma is (2.7−0.6−0.6+0.3+1.2)×10−11(2.7^{+0.3+1.2}_{-0.6-0.6})\times10^{-11}, which is too small to be measured in the current BB factories of BaBar and Belle. The branching ratio of B0→J/ψγB^0\to J/\psi \gamma is (4.5−0.5−0.6+0.6+0.7)×10−7({4.5^{+0.6+0.7}_{-0.5-0.6}})\times10^{-7}, which is just at the corner of being observable in the BB factories. A larger branching ratio BR(Bs0→J/ψγ)≃5×10−6BR(B_s^0 \to J/\psi \gamma) \simeq 5 \times 10^{-6} is also predicted. These decay modes will help us testing the standard model and searching for new physics signals.
  • 12.38.Bx
  • 13.25.Hw
  • B0: radiative decay
  • Phi(1020)
  • J/psi(3100)
  • B0: annihilation
  • quantum chromodynamics: perturbation theory
  • factorization
  • B0: branching ratio
  • B/s0: radiative decay
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