• Corpus ID: 119074499

Strong isospin violation and chiral logarithms in the baryon spectrum

@article{Brantley2016StrongIV,
title={Strong isospin violation and chiral logarithms in the baryon spectrum},
author={D. A. Brantley and B{\'a}lint Jo{\'o} and Ekaterina V. Mastropas and Emanuele Mereghetti and Henry Monge-Camacho and Brian Tiburzi and Andr{\'e} Walker-Loud},
journal={arXiv: High Energy Physics - Lattice},
year={2016}
}
• Published 22 December 2016
• Physics
• arXiv: High Energy Physics - Lattice
We present a precise lattice QCD calculation of the contribution to the neutron-proton mass splitting arising from strong isospin breaking, $m_n-m_p|_{QCD}=2.32\pm0.17$ MeV. We also determine $m_{\Xi^-} - m_{\Xi^0}|_{QCD} = 5.44\pm0.31$ MeV. The calculation is performed at three values of the pion mass, with several values of the quark mass splitting and multiple lattice volumes, but only a single lattice spacing and an estimate of discretization errors. The calculations are performed on the…
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Author(s): Berkowitz, Evan; Brantley, David; Bouchard, Chris; Chang, Chia Cheng; Clark, MA; Garron, Nicholas; Joo, Balint; Kurth, Thorsten; Monahan, Chris; Monge-Camacho, Henry; Nicholson, Amy;
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