Title of article
Perturbative QCD correction to the light-cone sum rule for the B∗Bπ and D∗Dπ couplings
Author/Authors
A. Khodjamirian، نويسنده , , R. Rückl، نويسنده , , S. Weinzierl، نويسنده , , O. Yakovlev، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 1999
Pages
8
From page
245
To page
252
Abstract
The B∗Bπ and D∗Dπ couplings have previously been derived from a QCD light-cone sum rule in leading order. Here, we describe the calculation of the O(αs) correction to the twist 2 term of this sum rule. The result is used for a first next-to-leading order analysis. We obtain gB∗Bπ=22±7 and gD∗Dπ=10.5±3, where the error indicates the remaining theoretical uncertainty.
Keywords
QCD sum rules , Perturbative calculations , Bottom meson
Journal title
PHYSICS LETTERS B
Serial Year
1999
Journal title
PHYSICS LETTERS B
Record number
911507
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