$B^0 \to φφ$ Decay in Perturbative QCD Approach

Details $B^0 \to φφ$ Decay in Perturbative QCD Approach $B^0 \to φφ$ Decay in Perturbative QCD Approach

2005-01-28

arxiv.org/abs/hep-ph/0501269v2

Eur.Phys.J.C41:311-317,2005

Physics

High Energy Physics

High Energy Physics - Phenomenology

13 pages, 1 figures

Scientific paper

10.1140/epjc/s2005-02199-7

The rare decay $B^0 \to \phi\phi$ can occur only via penguin annihilation topology in the standard model. We calculate this channel in the perturbative QCD approach. The predicted branching ratio is very small at ($10^{-8}$). We also give the polarization fractions, which shows that the transverse polarization contribution is comparable to the longitudinal one, due to a big transverse contribution from factorizable diagrams. The small branching ratio in SM, makes it sensitive to any new physics contributions.

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