Anomalous dimension of the heavy-light quark current in HQET up to four loops

2024/02/26 by Andrey Grozin

paper · doi:10.1007/jhep02(2024)198

Abstract

A bstract The anomalous dimension of the heavy-light quark current in HQET is calculated up to four loops. The N 3 LL perturbative correction to f B /f D is obtained.

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