ar X iv : h ep - p h / 05 01 26 9 v 1 2 8 Ja n 20 05 B 0 → φφ Decay in Perturbative QCD Approach
نویسنده
چکیده
The rare decay B0 → φφ 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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ar X iv : h ep - p h / 05 01 26 9 v 2 1 4 M ay 2 00 5 B 0 → φφ Decay in Perturbative QCD Approach
The rare decay B0 → φφ 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 factori...
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متن کامل/ 05 01 26 9 v 1 28 J an 2 00 5 B 0 → φφ Decay in Perturbative QCD Approach
The rare decay B0 → φφ 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 factori...
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