9-12 February 2021
Virtual Meeting
America/Toronto timezone

Sub-GeV Dark Vector Bosons and their Impacts on Cosmology

10 Feb 2021, 11:45
Virtual Meeting

Virtual Meeting

Physics Beyond the Standard Model


Mr John Coffey (University of Victoria)


The purpose of this presentation is to recognize the effects of electromagnetic energy injection into the early Universe from decaying sub-GeV dark vectors. Decay widths and energy spectra for the most prominent channels in the sub-GeV region are calculated for various dark vector models. The models include the kinetic mixing of the dark photon with the Standard Model photon, $U(1)_{A'}$ , a dark vector boson which couples to the baryon minus the lepton current, $U(1)_{B-L}$, and the last three are dark vector bosons which couple one lepton's current minus a different lepton's current, $U(1)_{L_i - L_j}$ where $i , j = e, \mu, \tau $. Measurements from Big Bang Nucleosynthesis and the Cosmic Microwave Background are used to constrain the lifetime, mass and coupling constant of the dark vectors.

email address jwcoffey193@gmail.com
Please select: Experiment or Theory Theory

Primary author

Mr John Coffey (University of Victoria)

Presentation Materials

Your browser is out of date!

Update your browser to view this website correctly. Update my browser now