Two-loop evolution equation for the B -meson distribution amplitude

URN to cite this document:: urn:nbn:de:bvb:355-epub-454976
DOI to cite this document:: 10.5283/epub.45497

Braun, V. M. ; Ji, Yao

; Manashov, A. N.

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Date of publication of this fulltext: 06 Apr 2021 12:53

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Abstract

We derive the two-loop evolution equation of the B-meson light-cone distribution amplitude which is the last missing element for the next-to-next-to-leading logarithmic resummation of QCD corrections to B decays in QCD factorization. We argue that the evolution kernel to all orders in perturbation theory can be written as a logarithm of the generator of special conformal transformations times the ...