Speaker
Prof.
Kalman Szabo
(Forschungszentrum Juelich)
Description
We compute the neutron-proton mass splitting and show that it is greater than zero by five standard deviations. Furthermore, splittings in the Sigma, Xi, D and Xi_cc isospin multiplets are determined providing also predictions. We perform lattice Quantum-Chromodynamics plus Quantum-Electrodynamics computations with four, non-degenerate Wilson fermion flavors. Four lattice spacings and pion masses down to 195 MeV are used.
Author
Prof.
Kalman Szabo
(Forschungszentrum Juelich)
