Baryon masses from full QCD+QEDC simulations

In these proceedings we present preliminary results for the masses of the proton, neutron and Ω− baryons obtained from QCD+QED lattice simulations performed with four dynamical quarks using C∗ boundary conditions. These results are part of the ongoing effort of the RC∗ collaboration discussed in the companion proceedings [1], and have been obtained on a single ensemble in which the renormalised electromagnetic coupling is αem ∼ 0.04, the physical volume is L ∼ 1.7 fm and the masses of the four dynamical quarks have been tuned at the U-spin symmetric point md = ms. We demonstrate on this unphysical ensemble that baryon masses can be calculated with satisfactory precision when including QED without the need for gauge-fixing and perturbation theory. This makes us confident in the effectiveness of the strategy presented here also in the case of simulations closer to the physical point.