Diphoton excess from hidden U(1) gauge symmetry with large kinetic mixing

Diphoton excess from hidden U(1) gauge symmetry with large kinetic mixing

Blog Article

We show that the 750 GeV diphoton excess can looney tunes knot on head be explained by introducing vector-like quarks and hidden fermions charged under a hidden U(1) gauge symmetry, which has a relatively large coupling constant as well as a significant kinetic mixing with U(1)Y.With the large kinetic mixing, the standard model gauge couplings unify around 1017 GeV, suggesting the grand unified theory without too rapid proton decay.Our scenario predicts events with a photon and missing transverse momentum, and its cross uri ease paw gel for cats section is related to that for the diphoton excess through the kinetic mixing.We also discuss other possible collider signatures and cosmology, including various ways to evade constraints on exotic stable charged particles.

In some cases where the 750 GeV diphoton excess is due to diaxion decays, our scenario also predicts triphoton and tetraphoton signals.