Search for Axion like particles using Laue-case conversion in a single crystal

Abstract

Axion Like Particles (ALPs) with a sub-keV range mass are searched by using the light-shining-through-a-wall technique. A novel system is developed in which injected X rays are converted and reconverted by the Laue-case conversion within a silicon single crystal with dual blades. The resonant ALPs mass of the conversion is scanned by varying the X-ray injection angle to the crystal. No significant signals are observed, and 90% C. L. upper limits on the ALP-two photon coupling constant are obtained as follows,(1) gaγγ<4.2×10−3GeV−1(ma<10eV),(2) gaγγ<5.0×10−3GeV−1(46eV<ma<1020eV). These are the most stringent laboratory-based constraints on ALPs heavier than 300 eV.