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arXiv · hep-ph/0408161

Graphical amplitudes from SCET

Christian W. Bauer·Dan Pirjol
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Abstract

We discuss the relationship between the graphical amplitudes T, C, P, ... used to parameterize nonleptonic B decay amplitudes, and matrix elements of operators in the soft-collinear effective theory (SCET) at leading order in Λ/m_b. Using the SU(3) flavor symmetry of the weak Hamiltonian we derive all-order constraints on the electroweak penguin contributions to the Wilson coefficients of SCET operators.

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Christian W. Bauer, Dan Pirjol. 2005-01-12. Graphical amplitudes from SCET. https://doi.org/10.1016/j.physletb.2004.10.047

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