19th International Conference on Hadron Spectroscopy and Structure in memoriam Simon Eidelman

26-31 July 2021
Mexico City
Mexico/General timezone
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Contribution Parallel

Mexico City -
Baryon Spectroscopy

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

Speakers

• Mr. Simone ROMITI

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.