The storage ring proton EDM experiment

TL;DR

This paper proposes a novel experiment to measure the proton's electric dipole moment using a storage ring, aiming to significantly improve sensitivity to fundamental CP-violation parameters and new physics scales.

Contribution

It introduces a new experimental method for detecting the proton EDM with enhanced sensitivity, potentially probing physics beyond the Standard Model.

Findings

Projected sensitivity reaches argetsens

Probing CP-violation in the Higgs sector

Significant improvement in $ heta_{QCD}$ constraints

Abstract

We describe a proposal to search for an intrinsic electric dipole moment (EDM) of the proton with a sensitivity of \targetsens, based on the vertical rotation of the polarization of a stored proton beam. The New Physics reach is of order $10^~3$TeV mass scale. Observation of the proton EDM provides the best probe of CP-violation in the Higgs sector, at a level of sensitivity that may be inaccessible to electron-EDM experiments. The improvement in the sensitivity to $\theta_{QCD}$, a parameter crucial in axion and axion dark matter physics, is about three orders of magnitude.