Prof. Dmitri Melikhov "Two puzzles in the beauty sector of QCD"
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Europe/Rome
Aula 57
Aula 57
Description
Abstract: I will discuss two related problems in the beauty sector of QCD: the b-quark mass and its determinations and the extraction of decay constants of beauty mesons. In particular, two recent puzzles will be addressed:
1. A tension between mb(mb) as extracted from heavy-heavy
and heavy-light QCD correlation functions.
2. Unexpected results on fB* / fB which suggests that our
understanding of the heavy-quark expansion might be
insufficient.
