Matching conditions for b -> s gamma and b -> s gluon in extensions of theStandard Model

Authors
Bobeth, C Misiak, M Urban, J
Citation
C. Bobeth et al., Matching conditions for b -> s gamma and b -> s gluon in extensions of theStandard Model, NUCL PHYS B, 567(1-2), 2000, pp. 153-185
Citations number
35
Categorie Soggetti
Physics
Journal title
NUCLEAR PHYSICS B
ISSN journal
05503213 → ACNP
Volume
567
Issue
1-2
Year of publication
2000
Pages
153 - 185
Database
ISI
SICI code
0550-3213(20000214)567:1-2<153:MCFB-S>2.0.ZU;2-Y
Abstract
We evaluate matching conditions for the Wilson coefficients of operators me diating the b --> s gamma and b --> s gluon transitions in a large class of extensions of the Standard Model. The calculation is performed at the lead ing order in flavour-changing couplings and includes two-loop QCD correctio ns. These corrections can be numerically important when approximate cancell ations occur among the new physics contributions and/or the SM one. (C) 200 0 Elsevier Science B.V. All rights reserved.