Loop corrections to heavy-to-light form factors and evanescent operators in SCET

被引：0
作者：
Becher, T
Hill, RJ
机构：
[1] Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA
[2] Stanford Univ, Stanford Linear Accelerator Ctr, Stanford, CA 94309 USA
来源：
JOURNAL OF HIGH ENERGY PHYSICS | 2004年 / 10期
关键词：
weak decays; B-physics; QCD; NLO computations;
D O I：
暂无
中图分类号：
O412 [相对论、场论]; O572.2 [粒子物理学];
学科分类号：
摘要：
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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页数：29
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