24 citations · 30 across the 4 of their papers we have counts for
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Partially Quenched Chiral Perturbation Theory and a Massless Up Quark: A Lattice Calculation of the Light-Quark-Mass Ratio
Daniel R. Nelson
The nontrivial topological structure of the QCD gauge vacuum generates a CP breaking term in the QCD Lagrangian. However, measurements of the neutron electric dipole moment have de…
Gasser-Leutwyler coefficients: A progress report
George T. Fleming, Daniel R. Nelson, Gregory W. Kilcup
Last year, we reported our first results on the determination of Gasser-Leutwyler coefficients using partially quenched lattice QCD with three flavors of dynamical staggered quarks…
Is strong CP invariance due to a massless up quark?
Daniel R. Nelson, George T. Fleming, Gregory W. Kilcup
A standing mystery in the Standard Model is the unnatural smallness of the strong CP violating phase. A massless up quark has long been proposed as one potential solution. A lattic…
Is the Up Quark Massless?
Daniel R. Nelson, George T. Fleming, Greg W. Kilcup
Several lattice calculations of a combination of the low energy constants of the chiral Lagrangian, 2α_8-α_5, are presented. This combination is critical for the preclusion of a ma…