Opening a meV mass window for Axion-like particles with a microwave-laser-mixed stimulated resonant photon collider

TL;DR

This paper proposes a novel microwave-laser-mixed photon collider to detect axion-like particles in the meV mass range, achieving high sensitivity to ALP-photon coupling and advancing dark matter research.

Contribution

It introduces a new three-beam stimulated resonant photon collider concept combining microwave and laser beams for ALP detection in the meV mass window.

Findings

Sensitivity can reach ALP-photon coupling of ~10^{-13} GeV^{-1}

Detects ALPs independently of cosmological models

Uses high-intensity lasers and microwave technology

Abstract

We propose a microwave-laser-mixed three-beam stimulated resonant photon collider, which enables access to axion-like particles in the meV mass range. Collisions between a focused pulse laser beam and a focused microwave pulse beam directly produce axion-like particles (ALPs) and another focused pulse laser beam stimulates their decay. The expected sensitivity in the meV mass range has been evaluated. The result shows that the sensitivity can reach the ALP-photon coupling down to $O(10^{-13})$ GeV${}^{-1}$ with $10^6$ shots if 10 -100 TW class high-intensity lasers are properly combined with a conventional 100 MW class S-band klystron. This proposal paves the way for identifying the nature of ALPs as candidates for dark matter, independent of any cosmological and astrophysical models.