Wuppertal 2015 – scientific programme

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T: Fachverband Teilchenphysik

T 33: Flavourphysik 1 (Theorie)

T 33.6: Talk

Monday, March 9, 2015, 18:00–18:15, K.12.20 (K2)

Estimates for the Parameters of the Heavy Quark Expansion — •Johannes Heinonen and Thomas Mannel — Universität Siegen

We give improved estimates for the non-perturbative parameters appearing in the heavy quark expansion for inclusive decays. While the parameters appearing in low orders of this expansion can be extracted from data, the number of parameters in higher orders proliferates strongly, making a determination of these parameters from data impossible. Thus, one has to rely on theoretical estimates which may be obtained from an insertion of intermediate states. We refine this method and attempt to estimate the uncertainties of this approach.