Year: 2025
Type: preprint
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, $η_W$. We show that, within the Standard Model, no new particle is required to form this state. We identify the $η_W$ state with the CP-odd linear combination of the ground states of hydrogen and antihydrogen atoms.
Source: arXiv (Cornell University)
Institution: Laboratoire de Physique Théorique et Hautes Energies
Language: English
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W4414486578
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