Speaker
Dr
Benoît Blossier
(CNRS)
Description
Using Heavy Meson Chiral Perturbation Theory is very popular to extrapolate
to the chiral limit phenomenologically relevant quantities of heavy flavour
physics that are computed on the lattice at unphysically large pion masses.
We show that the effect of the first orbital excitation may be not
negligible in chiral loops because the corresponding pionic coupling is
large. We have extracted that coupling by measuring single meson to multihadrons
correlation function at lattice points where the scalar B meson lies near the B pi threshold. That computation is required to obtain in the chiral limit the scalar B meson decay constant in static limit of Heavy Quark Effective Theory.
Author
Dr
Benoît Blossier
(CNRS)
