Speaker
Heechang Na
(The Ohio State University)
Description
We investigate D to Kl\nu semi-leptonic decays using HISQ light and charm quarks on the MILC coarse and fine lattices.
Using PCVC allows us to extract the form factors with no need for operator renormalization.
We employ random-wall sources and simultaneous multi-T fits, in order to reduce the statistical errors.
By caring out consistency checks, we successfully re-produce all meson spectrum and decay constants related to this process.
Chiral and continuum extrapolations are done using partially quenched ChiPT, and systematic errors are carefully estimated.
We present preliminary results for f_+(q^2=0), f_0(q^2), f_+(0)/f_{D_s} and |V_{cs}|.
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Primary author
Heechang Na
(The Ohio State University)
Co-authors
Christine Davies
(University of Glasgow)
Eduardo Follana
(Universidad de Zaragoza)
Junko Shigemitsu
(The Ohio State University)
Peter Lepage
(Cornell University)
