We analyze the effects of a massive dark photon with mV > 1 MeV on the Cosmic Microwave Background (CMB). We calculate the freeze-in abundance and derive limits on the parameter space from energy injections in the CMB. We find that for dark vectors in the mass range 1 MeV < mV 300 MeV, the model is already ruled out for effective electromagnetic coupling as low as 10-34 - 10-37.
|Original language||English (US)|
|Number of pages||5|
|State||Published - 2015|
|Event||13th International Conference on Topics in Astroparticle and Underground Physics, TAUP 2013 - , United States|
Duration: Sep 8 2013 → Sep 13 2013
Bibliographical noteFunding Information:
This work was supported in part by NSERC, Canada, and research at the Perimeter Institute is supported in part by the Government of Canada through NSERC and by the Province of Ontario through MEDT. The work of AF is partially supported by the Province of Québec through FRQNT.
- Cosmic Microwave Background
- Dark photons
- Hidden sector