Jul 26 – 30, 2021
US/Eastern timezone

Baryon masses from full QCD+QED_C simulations

Jul 29, 2021, 7:00 AM
Oral presentation Hadron Spectroscopy and Interactions Hadron Spectroscopy and Interactions


Madeleine Dale (INFN - National Institute for Nuclear Physics)


In this talk we present preliminary results for the masses of the proton, neutron and Omega- baryons obtained from $n_f$=1+2+1 QCD+QED lattice simulations performed using C$^*$ boundary conditions. Spin-1/2 and spin-3/2 baryon two-point correlators are extracted from full QCD+QED lattice simulations through an extension to the OpenQ$^*$D publicly available code. The correlators are computed by smearing, at different levels along the spatial directions, both the gauge configurations and the interpolating operators. Baryon masses are then extracted by applying the Generalised Eigenvalue Problem. These results are part of the ongoing effort of the RC* collaboration (discussed in the companion talk by Jens Lücke) and have been obtained on a single ensemble in which the renormalized electromagnetic coupling is $\alpha_{\text{em}}$~0.04, the physical volume is $L$~1.7fm and the masses of the four dynamical quarks have been tuned at the U-spin symmetric point $m_d=m_s$.

Primary authors

Agostino Patella (Humboldt-Universität zu Berlin) Alessandro Cotellucci (Humboldt University of Berlin) Isabel Campos Plasencia (Consejo Superior de Investigaciones Cientificas (CSIC) (ES)) Jens Luecke (HU Berlin) Lucius Bushnaq (TCD Dublin) Madeleine Dale (INFN - National Institute for Nuclear Physics) Marco Catillo (Ludwig Maximilian University of Munich) Marina Krstic Marinkovic (ETH Zurich) Prof. Nazario Tantalo (University of Rome "Tor Vergata") Patrick Fritzsch

Presentation materials