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

Simone Romiti

doi:10.31349/SuplRevMexFis.3.0308030

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

High Energy Physics - Lattice 2022-07-12 v1

Authors: Simone Romiti

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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.

Keywords

lattice qcd qed isospin breaking nucleon mass delta resonance quark mass difference

Cite

@article{arxiv.2203.04636,
  title  = {Leading Isospin Breaking effects in nucleon and $\Delta$ masses},
  author = {Simone Romiti},
  journal= {arXiv preprint arXiv:2203.04636},
  year   = {2022}
}

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