Indirect Detection of eV Dark Matter via Infrared Spectroscopy

Understand

Infrared spectroscopy has been developed significantly.

• In particular, infrared photons can be measured with high spectral and angular resolution in state-of-art spectrographs.
• They are sensitive to monochromatic photons due to the decay and annihilation of particles beyond the Standard Model, such as dark matter (DM), while insensitive to background photons that form a continuous spectrum.
• In this paper, we study the indirect detection of the DM decaying into infrared light using infrared spectrographs.