Leading Isospin Breaking effects in nucleon and $\Delta$ masses

Abstract

We present a lattice calculation of the leading corrections to the masses of nucleons and $\Delta$ resonances. These are obtained in QCD+QED at $1$st order in the Isospin Breaking parameters ${\alpha }_{EM}$, the electromagnetic coupling, and $\frac{{\hat{m}}_d-{\hat{m}}_u}{{\Lambda }_{QCD}}$, coming from the mass difference between $u$ and $d$ quarks.

References in corpus (4)

• Ab initio calculation of the neutron-proton mass difference
• Chiral Perturbation Theory and Baryon Properties
• Baryon spectrum with $N_f=2+1+1$ twisted mass fermions
• QED in finite volume and finite size scaling effect on electromagnetic properties of hadrons