Isovector axial form factor of the nucleon from lattice QCD

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2022

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CC-BY-4.0
Description of rights: CC-BY-4.0
Item type: Item , ZeitschriftenaufsatzAccess status: Open Access ,

Abstract

The isovector axial form factor of the nucleon plays a key role in interpreting data from long-baseline neutrino oscillation experiments. We perform a lattice-QCD based calculation of this form factor, introducing a new method to directly extract its z expansion from lattice correlators. Our final parametrization of the form factor, which extends up to spacelike virtualities of 0.7 GeV 2 with fully quantified uncertainties, agrees with previous lattice calculations but is significantly less steep than neutrino-deuterium scattering data suggests.

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http://doi.org/10.25358/openscience-8892

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https://openscience.ub.uni-mainz.de/handle/20.500.12030/8908

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Physical review D, 106, American Institute of Physics, Melville, NY, 2022, https://doi.org/10.1103/physrevd.106.074503

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DFG-491381577-H

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