Form factors of semileptonicDdecays from QCD sum rules

descriptionPublicationkeyboard_double_arrow_right Article 01 Dec 1991 Germany English Publisher:American Physical Society (APS)Journal:Physical Review D, volume 44, pages 3,567-3,581 (issn: 0556-2821,

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Authors: Ball, Patricia; Braun, Vladimir M.; Dosch, H. G.;

doi: 10.1103/physrevd.44.3567 , 10.5283/epub.14001

pmid: 10013818

Form factors of semileptonicDdecays from QCD sum rules

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Abstract

We give a detailed QCD sum-rule analysis of the semileptonic decays D+→K̅ 0e+νe and D+→K̅ 0*e+νe. We use the standard method based on expansion in Euclidean distance as well as a new set of sum rules on the light cone. We compare the results with current experimental data and results from quark models. Special attention is paid to the t dependence of the form factors. We find from our sum-rule analysis that for the vector form factors the usual pole model approximation works perfectly well, but is not adequate for the axial-vector form factors.

Country

Germany

Related Organizations

University of Regensburg
Germany
Heidelberg University
Germany

Keywords

ddc:530, 530 Physik

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