Title of article
HQET chromomagnetic interaction at two loops
Author/Authors
A Czarnecki، نويسنده , , A.G. Grozin، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 1997
Pages
8
From page
142
To page
149
Abstract
We present the coefficient of the chromomagnetic interaction operator, the only unknown coefficient in the Heavy Quark Effective Theory (HQET) lagrangian up to the 1m level, with the two-loop accuracy by matching scattering amplitudes of an on-shell heavy quark in an external field in full QCD and HQET, and obtain the two-loop anomalous dimension of this operator in HQET.
Journal title
PHYSICS LETTERS B
Serial Year
1997
Journal title
PHYSICS LETTERS B
Record number
908492
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