Speaker
Chia Cheng Chang
(University of Illinois)
Description
We present the status of our calculation of the D-meson mixing hadronic matrix elements for all five short-distance operators. We use the $N_{f}=2+1$ asqtad gauge field ensembles generated by the MILC collaboration involving four lattice spacings ranging from 0.12 to 0.045 fm and up/down to strange quark mass ratios as low as 0.05. For the charm quark we use the Sheikholeslami-Wohlert action with the Fermilab interpretation. The valence quarks include the full-QCD point and up to seven partially-quenched points. The matrix elements are extrapolated to the physical point using SU(3) heavy meson staggered chiral perturbation theory. We present preliminary chiral and continuum extrapolated results for all five local operators as well as a full error budget.
Primary author
Chia Cheng Chang
(University of Illinois)
Co-authors
Prof.
Aida El-Khadra
(University of Illinois)
Andreas Kronfeld
(Fermilab)
Chris Bouchard
(The Ohio State University)
Prof.
Claude Bernard
(Washington University St. Louis)
Dr
Elizabeth Freeland
(The School of the Art Institute of Chicago)
Dr
Elvira Gamiz
(Universidad de Granada)
Jack Laiho
(Syracuse University)
Ruth Van de Water
(BNL)
