https://doi.org/10.1140/epjc/s10052-021-09945-5
Regular Article - Theoretical Physics
Running axial mass of the nucleon as a phenomenological tool for calculating quasielastic neutrino–nucleus cross sections
1
Bogoliubov Laboratory of Theoretical Physics, Joint Institute for Nuclear Research, 141980, Dubna, Russia
2
Institute for Theoretical and Experimental Physics, 117218, Moscow, Russia
Received:
22
June
2021
Accepted:
13
December
2021
Published online:
28
December
2021
We suggest an empirical rule-of-thumb for calculating the cross sections of charged-current quasielastic (CCQE) and CCQE-like interactions of neutrinos and antineutrinos with nuclei. The approach is based on the standard relativistic Fermi-gas model and on the notion of neutrino energy dependent axial-vector mass of the nucleon, governed by a couple of adjustable parameters, one of which is the conventional charged-current axial-vector mass. The inelastic background contributions and final-state interactions are therewith simulated using GENIE 3 neutrino event generator. An extensive comparison of our calculations with earlier and current accelerator CCQE and CCQE-like data for different nuclear targets shows good or at least qualitative overall agreement over a wide energy range. We also discuss some problematical issues common to several competing contemporary models of the CCQE (anti)neutrino–nucleus scattering and to the current neutrino interaction generators.
© The Author(s) 2021
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