6533b85efe1ef96bd12bf4a0
RESEARCH PRODUCT
Isovector Axial Form Factor of the Nucleon from Lattice QCD
Dalibor DjukanovicGeorg M. Von HippelJonna KoponenHarvey B. MeyerKonstantin OttnadTobias SchulzHartmut Wittigsubject
High Energy Physics - PhenomenologyHigh Energy Physics - LatticeHigh Energy Physics - Phenomenology (hep-ph)530 PhysicsHigh Energy Physics - Lattice (hep-lat)FOS: Physical sciencesddc:530530 Physik530description
The isovector axial form factor of the nucleon plays a key role in interpreting data from long-baseline neutrino oscillation experiments. We present a lattice QCD calculation of this form factor, introducing a new method to directly extract its z-expansion from lattice correlators. Our final parameterization 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.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2022-10-14 |