Hiding in Plain Sight, the electroweak $\eta_W$
High Energy Physics - Phenomenology
2025-09-22 v1 High Energy Physics - Theory
Nuclear Theory
Abstract
The presence of a topological susceptibility in the electroweak sector of the Standard Model implies the existence of a pseudoscalar state in the spectrum, . We show that, within the Standard Model, no new particle is required to form this state. We identify the state with the CP-odd linear combination of the ground states of hydrogen and antihydrogen atoms.
Keywords
Cite
@article{arxiv.2509.15912,
title = {Hiding in Plain Sight, the electroweak $\eta_W$},
author = {Giacomo Cacciapaglia and Francesco Sannino and Jessica Turner},
journal= {arXiv preprint arXiv:2509.15912},
year = {2025}
}
Comments
4 pages, LaTeX