Loop Corrections to Heavy-to-Light Form Factors and Evanescent Operators in SCET

Richard J. Hill; Thomas Becher

Loop Corrections to Heavy-to-Light Form Factors and Evanescent Operators in SCET

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arxiv hep-ph/0408344 v1 pith:SMYQMQJO submitted 2004-08-31 hep-ph

Thomas Becher , Richard J. Hill This is my paper · ORCID

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keywords operatorscorrectionsformeffectiveevanescentfactorsheavy-to-lightscet

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One-loop matching corrections are calculated for Soft-Collinear Effective Theory (SCET) operators relevant to the analysis of heavy-to-light meson form factors at large recoil. The numerical impact of radiative corrections on form factor predictions is assessed. Evanescent operators in the effective theory are studied and it is shown that even in problems of the Sudakov type, these operators can be renormalized to have vanishing matrix elements.

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