L μ − L τ solution to the IceCube ultrahigh-energy neutrino deficit in light of NA64
Year: 2024
Type: article
Abstract: In this work we analyze the scenario where a MeV scale L μ − L τ gauge boson can explain the deficit in the diffuse ultrahigh-energy (UHE) astrophysical neutrino spectrum observed in IceCube, as well as the discrepancy between experimental and e + e − scattering data-driven Standard Model calculations of the muon anomalous magnetic moment. We map the parameter space of the model where the elastic resonant s-channel scattering of UHE neutrinos with the cosmic neutrino background, mediated by the new Z ′ , can improve the description of the observed cascade and track spectra over the no-scattering hypothesis. Comparing to recent NA64- μ results, we find that some part of the parameter space remains unexplored, but at a data volume of 10 11 muons on target NA64- μ will completely probe this region. Published by the American Physical Society 2024
Language: English
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: hybrid
Funders: National Science and Technology Council, University of California Institute for Mexico and the United States, National Center for Theoretical Sciences, Consejo Nacional de Ciencia y Tecnología, Universidad Nacional Autónoma de México, National Science and Technology Council, Dirección General de Asuntos del Personal Académico, Universidad Nacional Autónoma de México
Awards: G1998282193, G4099652307, G5162545561
OpenAlex ID: W4404741923