Speaker
Mr
Patrick Gelhausen
(University of Siegen)
Description
QCD Light-cone sum rules (LCSR) proved to be a reliable QCD based tool for the determination of form factors of heavy-to-light transitions like $B(D) \to \pi$. We revisit the LCSR for $B^*B\pi$ and $D^*D\pi$ strong couplings accessible via the same correlation function, employing the double dispersion
relations. These sum rules are considerably improved by additional radiative corrections , updates of
higher twist contributions and input parameters. We also probed various versions of double dispersion relations. The LCSRs
were extended to strong couplings of heavy-light mesons containing a strange quark.
Primary author
Mr
Patrick Gelhausen
(University of Siegen)
