Hiding in Plain Sight, the electroweak $η_W$
Giacomo Cacciapaglia, Francesco Sannino, Jessica Turner
公開日: 2025/9/19
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, $\eta_W$. We show that, within the Standard Model, no new particle is required to form this state. We identify the $\eta_W$ state with the CP-odd linear combination of the ground states of hydrogen and antihydrogen atoms.