A Photon Regeneration Experiment for Axionlike Particle Search using X-rays

TL;DR

This paper reports a novel x-ray photon regeneration experiment to search for axionlike particles, setting new limits on their coupling constants and expanding terrestrial experimental capabilities in this domain.

Contribution

It introduces a new experimental setup using high-energy x-rays and superconducting magnets to search for axionlike particles, broadening the energy range of terrestrial searches.

Findings

No regenerated photons detected, consistent with zero.

New limits established on axionlike particle-two photon coupling.

Expanded energy window for axionlike particle searches.

Abstract

In this letter we describe our novel photon regeneration experiment for the axionlike particle search using a x-ray beam with a photon energy of 50.2 keV and 90.7 keV, two superconducting magnets of 3 T, and a Ge detector with a high quantum efficiency. A counting rate of regenerated photons compatible with zero has been measured. The corresponding limits on the pseudoscalar axionlike particle-two photon coupling constant is obtained as a function of the particle mass. Our setup widens the energy window of purely terrestrial experiments devoted to the axionlike particle search by coupling to two photons. It also opens a new domain of experimental investigation of photon propagation in magnetic fields.