Probing Charged Matter Through Higgs Diphoton Decay, Gamma Ray Lines, and EDMs

Understand

Numerous experiments currently underway offer the potential to indirectly probe new charged particles with masses at the weak scale.

• For example, the tentative excess in Higgs diphoton decay and the tentative gamma-ray line in Fermi-LAT data have recently attracted attention as possible one-loop signatures of new charged particles.
• We explore the interplay between such signals, dark matter direct detection through Higgs exchange, and measurements of the electron EDM, by studying the size of these effects in several models.
• We compute one-loop effects to explore the relationship among couplings probed by different experiments.