Semileptonic D-decays and Lattice QCD
High Energy Physics - Lattice
2008-11-26 v4 High Energy Physics - Phenomenology
Abstract
We explore four different strategies to extract the D-meson semileptonic decay form factors from the Green functions computed in QCD numerically on the lattice. From our numerical tests we find that two such strategies, based on the use of double ratios of 3-point correlation functions, lead to an appreciable reduction of systematic uncertainties. This is an important step in reducing the overall uncertainty in the lattice QCD results for the D-decay form factors which are needed to determine the CKM entries |Vcd| and |Vcs| experimentally, that are nowadays known by imposing the unitarity of the CKM matrix.
Cite
@article{arxiv.0710.1741,
title = {Semileptonic D-decays and Lattice QCD},
author = {Damir Becirevic and Benjamin Haas and Federico Mescia},
journal= {arXiv preprint arXiv:0710.1741},
year = {2008}
}
Comments
7pages, proceedings write-up for Lattice 2007