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 gA 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.
| Original language | English |
|---|---|
| Journal | Proceedings of Science |
| Volume | Part F128557 |
| State | Published - 2016 |
| Event | 34th Annual International Symposium on Lattice Field Theory, LATTICE 2016 - Southampton, United Kingdom Duration: Jul 24 2016 → Jul 30 2016 |
Bibliographical note
Publisher Copyright:© Copyright owned by the author(s).
Funding
Computation for this work was done on the USQCD facilities at Fermilab and, for the MILC ensembles, at the Argonne Leadership Computing Facility, the National Center for Atmospheric Research, the National Center for Supercomputing Resources, the National Energy Resources Supercomputing Center, the National Institute for Computational Sciences, the Texas Advanced Computing Center, and under grants from the NSF and DOE. A.S.M. and A.S.K. thank the Kavli Institute for Theoretical Physics, which is supported by the National Science Foundation under Grant No. PHY11-25915, for its hospitality. This work was supported by the U.S. Department of Energy SCGSR program and Universities Research Association (A.S.M.); the German Excellence Initiative, the European Union Seventh Framework Programme, and the European Union's Marie Curie COFUND program (A.S.K.). The SCGSR program is administered by the Oak Ridge Institute for Science and Education for the DOE under contract No. DE-AC05-06OR23100. R.J.H. and A.S.M. also supported by DOE Grant No. DE-FG02-13ER41958. TRIUMF receives federal funding via a contribution agreement with the National Research Council of Canada. Research at Perimeter Institute is supported by the Government of Canada through the Department of Innovation, Science and Economic Development and by the Province of Ontario through the Ministry of Research and Innovation. R.L. thanks IntelR for its support of the Intel Parallel Computing Center at Indiana University. Fermilab is operated by Fermi Research Alliance, LLC, under Contract No. DE-AC02-07CH11359 with the United States Department of Energy.
| Funders | Funder number |
|---|---|
| Fermi Research Alliance, LLC | DE-AC02-07CH11359 |
| Excellence Initiative of the German federal and state government | |
| Intel Parallel Computing Center | |
| Ministry of Higher Education, Science, Research and Innovation | |
| National Center for Supercomputing Resources | |
| National Energy Resources Supercomputing Center | |
| National Institute for Computational Sciences | |
| Texas Advanced Computing Center | |
| U.S. Department of Energy SCGSR program and Universities Research Association | |
| United States Department of Energy | |
| National Science Foundation (NSF) | PHY11-25915 |
| Michigan State University-U.S. Department of Energy (MSU-DOE) Plant Research Laboratory | |
| National Center for Atmospheric Research | |
| Kavli Institute for Theoretical Physics, University of California, Santa Barbara | |
| Oak Ridge Institute for Science and Education | DE-FG02-13ER41958, DE-AC05-06OR23100 |
| University of Southern Indiana | |
| Innovation, Science and Economic Development Canada | |
| Canada Excellence Research Chairs, Government of Canada | |
| National Research Council Canada (NRCC) | |
| European Commission | |
| Seventh Framework Programme |
ASJC Scopus subject areas
- General