Volume 414 - 41st International Conference on High Energy physics (ICHEP2022) - Accelerators: Physics, Performance, and R&D for future facilities
A new method with minimized systematic error sources to detect axion dark matter in storage rings using an rf Wien filter
O. Kim
Full text: pdf
Pre-published on: November 16, 2022
Published on:
Abstract
Axion, a hypothetical pseudo-scalar particle, is a direct consequence of the Peccei-Quinn mechanism, which was proposed to solve the strong CP problem in 1977. It is also a plausible candidate for dark matter. The axion feebly interacts with the Standard Model (SM) particles, which makes it extremely challenging to detect a sign of its existence. Nevertheless, there have been many efforts to search for the axion-SM interaction, the prevailing method among which is a cavity haloscope seeking for the axion-photon interaction, more suited for axion-frequencies above 100 MHz. On the other hand, there is another branch of interaction, namely a coupling between the axion and the nuclear electric dipole moment (EDM), which induces an oscillating EDM at the axion Compton frequency. A storage ring EDM experiment provides a powerful method sensitive to a proton EDM as small as $10^{-29}$ $e\cdot$cm. We extend the storage ring EDM concept to measure an oscillating EDM with a comparable sensitivity by exploiting a new spin resonance scheme using an rf Wien filter. The new method does away with the severe spin resonance systematic error sources by a careful combination of frequencies used. We introduce this new method from a basic working principle to a projected sensitivity on the axion-EDM coupling constant.
DOI: https://doi.org/10.22323/1.414.0043
How to cite

Metadata are provided both in "article" format (very similar to INSPIRE) as this helps creating very compact bibliographies which can be beneficial to authors and readers, and in "proceeding" format which is more detailed and complete.

Open Access