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Leading-order QCD corrections to b → s γ and b γ s g decays in three regularization schemes

par Ciuchini, Marco;Franco, Enrico;Reina, Laura ;Silvestrini, Luca
Référence Nuclear physics. B, 421, 1, page (41-64)
Publication Publié, 1994

Article révisé par les pairs

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Résumé :

We discuss in detail the calculation of the leading-order QCD corrections to the effective hamiltonian which governs b → s γ and b → s g transitions in three different regularization schemes (HV, NDR and DRED). We show that intermediate stages of the calculation do depend on the regularization, but the same scheme independent coefficients can be obtained in all the considered schemes. A detailed discussion of the results already present in the literature is also given.