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QCD factorisation in radiative B decays

  • PS01 Heavy Flavour Physics
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The European Physical Journal C - Particles and Fields Aims and scope Submit manuscript

Abstract

We study how, in the heavy-quark limit and at one loop, the amplitude of the radiative decays Bγν,Bγγ,Bγ+ factorise, i.e., they can be written as a convolution of a (perturbative) hard-scattering amplitude and the (nonperturbative) light-cone distribution amplitude of the B-meson. Using the framework of the Soft-Collinear Effective Theory, large logarithms can be resummed and the amplitudes of the 3 decays are shown to differ from each other only through the dynamics above M B .

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Descotes-Genon, S. QCD factorisation in radiative B decays. Eur Phys J C 33 (Suppl 1), s244–s246 (2004). https://doi.org/10.1140/epjcd/s2003-03-122-5

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  • DOI: https://doi.org/10.1140/epjcd/s2003-03-122-5

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