Three loop anomalous dimension of the heavy light quark current in HQET - INSPIRE

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Three loop anomalous dimension of the heavy light quark current in HQET

K.G. Chetyrkin
(
- Freiburg U. and
- Karlsruhe U., TTP
)
,
A.G. Grozin
(
- Karlsruhe U., TTP
)

Mar, 2003

16 pages

Published in:

Nucl.Phys.B 666 (2003) 289-302

e-Print:

hep-ph/0303113 [hep-ph]

DOI:

10.1016/S0550-3213(03)00490-5

Report number:

TTP03-10,
SFB-CPP-03-05,
THEP-03-05

View in:

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Abstract:

The anomalous dimension of the heavy-light quark current in HQET is calculated with three-loop accuracy, as well as the renormalized heavy-quark propagator. The NNL perturbative correction to f_B/f_D is obtained.

Note:

16 pages, 7 eps figures. Typos in the discussion of fB/fD corrected. Paper is also available at http://www-ttp.physik.uni-karlsruhe.de/Preprints/ Results and REDUCE programs are available at http://www-ttp.physik.uni-karlsruhe.de/Progdata/ttp03/ttp03-10/ Report-no: TTP03-10, SFB/CPP-03-05, THEP 03/05

12.39.Hg
12.38.Bx
Heavy quark effective theory
Radiative corrections
HQET model
quark: current
dimension: anomaly
B: decay constant
D: decay constant
decay constant: ratio

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