Speaker
Antonino D'Anna
(IFT UAM-CSIC)
Description
We discuss the extraction of form factors for heavy-light
pseudo-scalar to light pseudo-scalar decay form factors from finite time
correlation functions. Particular emphasis is placed on controlling the
contamination from excited-states using also the information from chiral
perturbation theory to isolate the ground-state contribution. The analysis is
performed on CLS ensembles with $N_f = 2+1$ flavours of
$\mbox{O}(a)$-improved Wilson fermions (presently) at the
$\mathrm{SU}(3)$-symmetric point with relativistic heavy-quark masses in the
charm region and above. Our form factors will be used in a computation of
the $B \to \pi$ form factors combining the continuum-limit relativistic
results with static-limit calculations.
Authors
Dr
Alessandro Conigli
Dr
Antoine Gérardin
Antonino D'Anna
(IFT UAM-CSIC)
Dr
Carlos Pena
(IFT UAM-CSIC)
Dr
Gregorio Herdoíza
(IFT UAM-CSIC)
Dr
Huber Simma
Jochen Heitger
(Institut fuer Theoretische Physik, Westfaelische Wilhelms-Universitaet Muenster)
Dr
Nikolai Husung
(CERN)
Dr
Patrick Fritzsch
Simon Kuberski
(CERN)