corrections to decay at zero recoil

Analytic formulae are presented for the two-loop perturbative QCD corrections to decay at the zero recoil point, which are required for the extraction of from measurements of exclusive decays. The results are in agreement with those in [8, 9]. Some comments on the numerical evaluation of the diagram...

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Bibliographic Details
Published in:The European physical journal. C, Particles and fields Particles and fields, 1998-09, Vol.5 (3), p.517-524
Main Authors: Franzkowski, J, Tausk, J B
Format: Article
Language:English
Subjects:
Decay
Recoil
Online Access:Get full text
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Summary:Analytic formulae are presented for the two-loop perturbative QCD corrections to decay at the zero recoil point, which are required for the extraction of from measurements of exclusive decays. The results are in agreement with those in [8, 9]. Some comments on the numerical evaluation of the diagrams involved are made.
ISSN:1434-6044
1434-6052
DOI:10.1007/s100529800858