D semi-leptonic decay form factors with HISQ charm and light quarks

Details D semi-leptonic decay form factors with HISQ charm and light quarks D semi-leptonic decay form factors with HISQ charm and light quarks

2009-10-20

arxiv.org/abs/0910.3919v1

PoS LAT2009:247,2009

Physics

High Energy Physics

High Energy Physics - Lattice

7 pages, 3 figures, Talk given at Lattice 2009, July 26-31 2009, Peking University, Beijing, China

Scientific paper

We present a program to study D semi-leptonic decay form factors with HISQ charm and light quarks. In this exploratory work, we study $D_s$ to $\eta_s$, $l\nu_l$ semi-leptonic decay on MILC coarse ($20^3\times64$) gauge configurations with 2+1 dynamical flavors. We develop a new method to calculate $f_+(0)$ and $f_0(q^2)$ from scalar current matrix elements, $<\pi|\bar{s}c|D>$, which does not require any operator renormalization. We also determine $f_+(q^2)$ and $f_0(q^2)$ from vector currents with a fully non-perturbative renormalization method.

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