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arXiv · 1610.04593

Calculation of the Nucleon Axial Form Factor Using Staggered Lattice QCD

Aaron S. Meyer·Richard J. Hill·Andreas S. Kronfeld·Ruizi Li·James N. Simone
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Abstract

The nucleon axial form factor is a dominant contribution to errors in neutrino oscillation studies. Lattice QCD calculations can help control theory errors by providing first-principles information on nucleon form factors. In these proceedings, we present preliminary results on a blinded calculation of $g_A$ and the axial form factor using HISQ staggered baryons with 2+1+1 flavors of sea quarks. Calculations are done using physical light quark masses and are absolutely normalized. We discuss fitting form factor data with the model-independent $z$ expansion parametrization.

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Aaron S. Meyer, Richard J. Hill, Andreas S. Kronfeld, Ruizi Li, James N. Simone. 2016-10-14. Calculation of the Nucleon Axial Form Factor Using Staggered Lattice QCD. https://arxiv.org/abs/1610.04593

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