[Tufts-Nu] Fwd: [NUSTEC-NEWS] New manuscript: The Nucleon Axial Form Factor from Averaging Lattice QCD Results

Subject: [Tufts-Nu] Fwd: [NUSTEC-NEWS] New manuscript: The Nucleon Axial Form Factor from Averaging Lattice QCD Results

From: Jeremy Wolcott <jeremy wolcott tufts edu>

Date: Thu, 8 Jan 2026 16:57:18 -0500

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This would be an interesting paper to discuss at a future Friday meeting, given previous conversations!

-------- Forwarded Message --------

Subject:	[External] [NUSTEC-NEWS] New manuscript: The Nucleon Axial Form Factor from Averaging Lattice QCD Results
Date:	Wed, 7 Jan 2026 11:01:59 -0600
From:	Benjamin Bogart <bbogart umich edu>
To:	NUSTEC-NEWS listserv fnal gov, nustec_cewg listserv fnal gov, nustec_ctgwg listserv fnal gov

[EXTERNAL] – This message is from an external sender

Dear NuSTEC!

We would like to bring your attention to a new manuscript on the "The Nucleon Axial Form Factor from Averaging Lattice QCD Results" (arXiv:2601.02676)

Abstract
Flagship neutrino oscillation experiments depend on precise and accurate theoretical knowledge of neutrino-nucleon cross sections across a variety of energies and interaction mechanisms. Key ingredients to the amplitudes that make up these cross sections are parameterized form factors. The axial form factor describing a weak interaction with a nucleon is part of one of the primary neutrino-nucleon interaction mechanisms, quasielastic scattering, yet this form factor is uncertain and its precision is limited by the availability of data for a neutrino scattering with nucleons or small nuclear targets. Lattice Quantum Chromodynamics (LQCD) now offers another approach for obtaining mathematically rigorous constraints of the axial form factor from theoretical calculations with complete systematic error budgets. In this work, strategies for averaging LQCD results are explored, including both a random sampling of form factor values across momentum transfers as well as an averaging strategy based on analytic calculations of form factor derivatives. Fits to z expansion parameterizations are reported and compared against neutrino-hydrogen and neutrino-deuterium scattering data.

https://arxiv.org/abs/2601.02676v1

Cheers!

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