Radiative Baryonic $B$ Decays

Details Radiative Baryonic $B$ Decays Radiative Baryonic $B$ Decays

2004-05-28

arxiv.org/abs/hep-ph/0405283v3

Phys.Lett. B610 (2005) 67-73

Physics

High Energy Physics

High Energy Physics - Phenomenology

11 pages, 2 figures, Revtex4, new fitting is included

Scientific paper

10.1016/j.physletb.2005.01.099

We study the structure-dependent contributions to the radiative baryonic $B$ decays of $B \to {\bf B}{\bf \bar B'}\gamma$ in the standard model. We show that the decay branching ratios of $Br(B \to {\bf B}{\bf \bar B'}\gamma)$ are $O(10^{-7})$, which are larger than the estimated values of $O(10^{-9})$ induced from inner bremsstrahlung effects of the corresponding two-body modes. In particular, we find that $Br(B^- \to \Lambda \bar p \gamma)$ is around $1 \times 10^{-6}$, which is close to the pole model estimation but smaller than the experimental measurement from BELLE.

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