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Theoretical Introduction to B Decays and the Soft-Collinear Effective Theory

Iain W. Stewart
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Abstract

In this talk I give an introduction to methods used to give a model independent description of QCD effects in B-decays. I discuss three useful expansions: mb/mW << 1 for the electroweak Hamiltonian, LambdaQCD/mb << 1 for Heavy Quark Effective theory, and LambdaQCD/Q << 1 for the Soft-Collinear Effective Theory where Q ~ mb is the large energy of light final state hadrons. I discuss predictions that can be made with each expansion.

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Iain W. Stewart. 2003-08-19. Theoretical Introduction to B Decays and the Soft-Collinear Effective Theory. https://arxiv.org/abs/hep-ph/0308185

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