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

H. Na; C. T. H. Davies; E. Follana; P. Lepage; J. Shigemitsu

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

High Energy Physics - Lattice 2010-11-05 v1 High Energy Physics - Phenomenology

Authors: H. Na , C. T. H. Davies , E. Follana , P. Lepage , J. Shigemitsu

Abstract

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.

Keywords

d meson semi-leptonic decay form factor hisq action lattice qcd scalar current non-perturbative renormalization

Cite

@article{arxiv.0910.3919,
  title  = {D semi-leptonic decay form factors with HISQ charm and light quarks},
  author = {H. Na and C. T. H. Davies and E. Follana and P. Lepage and J. Shigemitsu},
  journal= {arXiv preprint arXiv:0910.3919},
  year   = {2010}
}

Comments

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

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

Abstract

Keywords

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