Speaker
Description
This talk will present a number of high precision results on matrix
elements of quark bilinear operators between nucleon states using
lattice QCD. From these, we extract a number of exciting quantities,
at the intersection of nuclear and particle physics. We show that the
axial charge $g_A$, a fundamental parameter encapsulating the weak
interaction of nucleons, is calculated with a few percent
accuracy. Results for the scalar and tensor charges, $g_S$ and $g_T$,
which combined with precision neutron decay distribution probe novel
scalar and tensor interactions at the TeV scale. Vector form factors
are probed in electron scattering, while axial vector form factors are
used in the calculation of the cross-section of neutrinos on nuclear
targets. These energy dependent cross-sections are needed to determine
the neutrino flux, an important systematic in neutrino oscillation
experiments. Finally we will present results for flavor diagonal
charges that provide the contribution of the quark spin to the nucleon
spin, the quark EDM to the neutron EDM, and needed to determine the
cross-section of dark matter with nuclear targets.
