Systematic errors in partially-quenched QCD plus QED lattice simulations

2012/01/13 by Antonin Portelli, Stephan Dürr, Portelli, Antonin +19 · 1 citation
Physics and Astronomy · Engineering · #Quantum Chromodynamics and Particle Interactions #Particle physics theoretical and experimental studies #Superconducting Materials and Applications

paper · doi:10.48550/arxiv.1201.2787

Abstract

At the precision reached in current lattice QCD calculations, electromagnetic effects are becoming numerically relevant. Here, electromagnetic effects are included by superimposing U(1) degrees of freedom on N_f = 2+1 QCD configurations from the Budapest-Marseille-Wuppertal Collaboration. We present preliminary results for the electromagnetic corrections to light pseudoscalars mesons masses and discuss some of the associated systematic errors.

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• Reducing Hadronic Uncertainty in Low-Energy Neutral-Current Processes

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