2023/08/30 by Schuster, Philip, Toro, Natalia
#FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #High Energy Physics - Theory (hep-th)
paper · doi:10.48550/arxiv.2308.16218
We present rules for computing scattering amplitudes of charged scalar matter and photons, where the photon has non-zero spin Casimir ρ, and is therefore a continuous spin particle (CSP). The amplitudes reduce to familiar scalar QED when ρ→ 0. As a concrete example, we compute the pair annihilation and Compton scattering amplitudes in this theory and comment on their physical properties, including unitarity and scaling behavior at small and large ρ.