Abstract
Possible connection between visible and hidden Worlds of particle physics is provided by the vector portal interaction, that is kinetic mixing between ordinary (visible) and hidden photons. If sufficiently light, the hidden photon can be produced (and absorbed) by ordinary matter in a Compton-like processes, which naively are insensitive to the hidden photon mass. In this talk we study the evolution of the two vector boson system, which exhibits oscillations similar to the well-known neutrino oscillations. We show that, provided by the environment matter, this quantum phenomenon significantly suppresses the hidden photon production in particle collisions. The ordinary photon is effectively massive in the media. The suppression is important for hidden photon lighter than photon in the corresponding media (detector, beam dump material etc) and grows with decrease of the hidden photon mass making all the accelerator and reactor experiments absolutely insensitive to the models with light photons. The dedicated study is required for the case of the degenerate photon and hidden photon, when, on the contrary, the hidden photon production can be amplified with respect to the Compton process.
Highlights
Two statements about particle physics phenomenology are widely accepted at present
The reason for the second statement is that we have several phenomena beyond the SM: neutrino oscillations, baryon asymmetry of the Universe, dark matter, flatness and homogeneity of the present Universe
The present talk is partly based on some finished papers [2, 3] and work in progress [4], and aimed at stimulating collaborations of the relevant intensity frontier experiments (TEXONO, NEOS, DANSS, NA64, SHiP, DUNE, T2K, MicroBooNE, etc) to perform searches for the light hidden photons following the theoretical analysis presented below, which accounts for oscillations between photon and hidden photon very similar to neutrino oscillation phenomena
Summary
Two statements about particle physics phenomenology are widely accepted at present. First, the Standard Model of particle physics (SM) nicely explains almost all results of particle physics experiments. On the theoretical side there is one more very relevant statement: any new heavy particles contribute quantum corrections to the SM Higgs boson mass, mh, lifting it up to the energy scale of new physics. Miraculously in this sense, we found its mass at the electroweak scale, mh ∼ EEW. There are no general theoretical motivation for the new particles to be exactly at this scale It is general, for all the feebly coupled particles the best place to show up is the intensity frontier experiments. The present talk is partly based on some finished papers [2, 3] and work in progress [4], and aimed at stimulating collaborations of the relevant intensity frontier experiments (TEXONO, NEOS, DANSS, NA64, SHiP, DUNE, T2K, MicroBooNE, etc) to perform searches for the light hidden photons following the theoretical analysis presented below, which accounts for oscillations between photon and hidden photon very similar to neutrino oscillation phenomena
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
