Speaker
Dr
Akaki Rusetski
(HISKP, University of Bonn, Germany)
Description
We propose a framework for the extraction of the $B\to K^*$ decay form factors from lattice data, based on the non-relativistic effective field theory in a finite volume. A possible admixture of the $\eta K$ channel is studied, and the multi-channel Lellouch-Luescher formula is reproduced. Further, a procedure is
formulated for the extraction of the form-factors at the resonance pole. The definition of the photon virtuality at the resonance pole is discussed. The limit of an infinitely narrow resonance is investigated in detail in the multi-channel case.
Primary author
Dr
Akaki Rusetski
(HISKP, University of Bonn, Germany)
Co-authors
Mr
Andria Agadjanov
(HISKP, University of Bonn)
Prof.
Ulf-G. Meissner
(HISKP, University of Bonn and FZ Juelich)
Prof.
Veronique Bernard
(IPN, University Paris-Sud)
