https://doi.org/10.1051/epjconf/201817513027
D → Klv semileptonic decay using lattice QCD with HISQ at physical pion masses
1
Jefferson Lab, 12000 Jefferson Avenue, Newport News, Virginia 23606, USA
2
SUPA, School of Physics and Astronomy, University of Glasgow, Glasgow, G12 8QQ UK
3
INFN, Sezione di Roma Tor Vergata, Via della Ricerca Scientifica 1, 00133 Roma RM, Italy
4
Laboratory for Elementary-Particle Physics, Cornell University, Ithaca, New York, 14853, USA
** Speaker, e-mail: bipasha@jlab.org
Published online: 26 March 2018
he quark flavor sector of the Standard Model is a fertile ground to look for new physics effects through a unitarity test of the Cabbibo-Kobayashi-Maskawa (CKM) matrix. We present a lattice QCD calculation of the scalar and the vector form factors (over a large q2 region including q2 = 0) associated with the D→ Klv semi-leptonic decay. This calculation will then allow us to determine the central CKM matrix element, Vcs in the Standard Model, by comparing the lattice QCD results for the form factors and the experimental decay rate. This form factor calculation has been performed on the Nf = 2 + 1 + 1 MILC HISQ ensembles with the physical light quark masses.
© The Authors, published by EDP Sciences, 2018
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (http://creativecommons.org/licenses/by/4.0/).
