2010/11/17 by André Walker-Loud, Andre Walker-Loud, Walker-Loud, Andre
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Lattice (hep-lat) #High Energy Physics - Phenomenology (hep-ph) #High-Energy Particle Collisions Research #Nuclear Theory (nucl-th) #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-lat #hep-ph #nucl-th
paper · pdf · doi:10.48550/arxiv.1011.4015
7 pages, talk given at the XXVIII International Symposium on Lattice Filed Theory, June 14-19,2010, Villasimius, Sardinia Italy
arxiv created 2010/11/17 · openalex publication_date 2010/11/17 · arxiv updated 2010/11/18 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We describe an independent method for determining the strong-isospin breaking mass parameter, 2delta = md - mu, which utilizes the baryon spectrum. We use a prudent partially quenched choice of splitting the valence quark masses symmetrically about the light sea quark mass. This choice has the consequence of mitigating the most severe partial quenching artifacts. We also discuss the most significant hurdle to this method which is determining the electromagnetic self-energy of the neutron-proton mass splitting, a challenge which lacks a satisfactory answer. Despite these issues, the phenomenologically interesting dependence of mn - mp on delta can be determined.