Exploring pseudo-Nambu–Goldstone bosons by stimulated photon colliders in the mass range 0.1 eV to 10 keV
Résumé
Searching for pseudo-Nambu–Goldstone bosons (pNGBs) in weak-coupling domains is crucial for understanding the dark components in the universe. We propose searching for pNGBs coupled to 2 photons in the mass range from 0.1 eV to 10 keV. This could provide opportunities to test string-theory-based pNGBs beyond the GUT scale $M \sim 10^{16}$ GeV included in the weak coupling proportional to $M^{-1}$. We provide formulae that are applicable to photon–photon scattering via a pNGB resonance exchange with a stimulation process in an asymmetric head-on photon–photon collider by mixing 3 laser pulses in laboratory experiments. We discuss the quantum electrodynamic effects on the pNGB exchange in the same mass–coupling domain as a background process from the standard model. We find that a large unexplored mass–coupling domain is accessible by combining existing laser facilities, including free-electron lasers.
Mots clés
Dark matter
Experiments using photon beams
Laser experiments
Cosmology of physics beyond the Standard Model
Laboratory experiments
new physics
Goldstone particle
scale: grand unified theory
weak coupling
laser
free electron laser
two-photon: coupling
background
quantum electrodynamics
photon photon: scattering
mixing
dark matter