Fat penguins and imaginary penguins in perturbative QCD

By Y. Keum, Hsiang-nan Li, A. Sanda. 2000

404 citations recorded by the source corpus.

Abstract We evaluate B → Kπ decay amplitudes in perturbative QCD picture. It is found that penguin contributions are dynamically enhanced by nearly 50% compared to those assumed in the factorization approximation. It is also shown that annihilation diagrams are not negligible, and give large strong phases. Our results for branching ratios of B → Kπ decays for a representative parameter set are consistent with data.

Subfields: Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/25f8d06aabbd5a9016a3ce19d917bb8fc9b55b4f

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In Nuclear and High Energy Physics

1. Andrzej Buras
2. T. Hurth
3. David M. Straub
4. T. Becher
5. P. Paradisi
6. M. Neubert
7. J. Virto
8. A. Pich

Citations in the corpus

• Physics at Super B Factory (2004, methodology): “However the groups use different heavy quark discretizations: Fermilab/MILC use Fermilab quarks and HPQCD use non-relativistic heavy quarks (NRQCD).”
• Flavor Physics in the Quark Sector (2009, methodology): “hanced” terms, which are proportional to the ratio r χ = m 2 P /(mbmq), where P is a pion or Kaon and mq an average of light quark masses; another class of certain annihilation topologies with large color factors (first pointed out in [48]) is discussed in Sec.”