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Title: Calculation of the Nucleon Axial Form Factor Using Staggered Lattice QCD

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.
Authors:
 [1] ;  [2] ;  [1] ;  [3] ;  [1]
  1. Fermilab
  2. Perimeter Inst. Theor. Phys.
  3. Indiana U.
Publication Date:
OSTI Identifier:
1331118
Report Number(s):
FERMILAB-CONF-16-451-T; arXiv:1610.04593
1492107
DOE Contract Number:
AC02-07CH11359
Resource Type:
Conference
Research Org:
Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States)
Sponsoring Org:
USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS