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arXiv · 2203.04636

Leading Isospin Breaking effects in nucleon and $Δ$ masses

Simone Romiti
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Abstract

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

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Simone Romiti. 2022-03-09. Leading Isospin Breaking effects in nucleon and $Δ$ masses. https://doi.org/10.31349/suplrevmexfis.3.0308030

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