Constraints on Semileptonic Form - Factors Fromdispersive Sum Rules
نویسنده
چکیده
I briefly discuss the derivation of dispersive sum rules constraining semileptonic form-factors. I outline the use of these constraints in the context of charmless semileptonic decays and suggest how, in combination with other theoretical and experimental information, they may reduce the uncertainties in the extraction of V ub .
منابع مشابه
ar X iv : h ep - p h / 99 08 36 5 v 1 1 6 A ug 1 99 9 Budker Institute of Nuclear Physics
Sum rules for 1/m corrections to the form factors of semileptonic B decays Budker INP 92-80 NOVOSIBIRSK 1992 Sum rules for 1/m corrections to the form factors of semileptonic B decays ABSTRACT Semileptonic B decays are described by the Isgur-Wise form factor to the leading order in 1/m; four new functions appear in the first order [5]. Values of these functions are crucial for the applicability...
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