Hybrid renormalization of penguins and five-dimension heavy light operators - INSPIRE

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Hybrid renormalization of penguins and five-dimension heavy light operators

Andrey G. Grozin
(
- Novosibirsk, IYF
)
,
Matthias Neubert
(
- CERN
)

Dec, 1996

19 pages

Published in:

Nucl.Phys.B 495 (1997) 81-98

e-Print:

hep-ph/9701262 [hep-ph]

DOI:

10.1016/S0550-3213(97)00200-9

Report number:

CERN-TH-96-238,
BUDKER-INP-1997-1,
BUDKER-INP-97-1

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Abstract:

We discuss the renormalization of local, scalar and pseudoscalar dimension-5 operators containing a heavy and a light quark field at scales below the heavy-quark mass, using the formalism of the heavy-quark effective theory (HQET). We calculate the anomalous dimensions of these operators and their mixing to one-loop order. We also perform the one-loop matching of gluon and photon penguin operators onto operators of the HQET. We discuss applications of our results to the mixing of gluon and photon penguin operators at low renormalization scales, and to the calculation of

1/m_Q~2

corrections to meson decays constants.

Note:

18 pages, 4 figures included

12.39.Hg
12.38.Bx
12.38.Cy
13.20.He
Heavy-quark effective theory
Penguin operators
Renormalization of local operators
Summation of perturbation theory
HQET model
operator: renormalization

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