| | |
| | |
Stat |
Members: 3643 Articles: 2'487'895 Articles rated: 2609
28 March 2024 |
|
| | | |
|
Article overview
| |
|
Cosmological Bounds on sub-GeV Dark Vector Bosons from Electromagnetic Energy Injection | John Coffey
; Lindsay Forestell
; David E. Morrissey
; Graham White
; | Date: |
4 Mar 2020 | Abstract: | New dark vector bosons that couple very feebly to regular matter can be
created in the early universe and decay after the onset of big bang
nucleosynthesis (BBN) or the formation of the cosmic microwave background (CMB)
at recombination. The energy injected by such decays can alter the light
element abundances or modify the power and frequency spectra of the CMB. In
this work we study the constraints implied by these effects on a range of
sub-GeV dark vectors including the kinetically mixed dark photon, and the
$B-L$, $L_e-L_mu$, $L_e-L_ au$ , and $L_mu-L_ au$ dark U(1) bosons. We
focus on the effects of electromagnetic energy injection, and we update
previous investigations of dark photon and other dark vector decays by taking
into account non-universality in the photon cascade spectrum relevant for BBN
and the energy dependence of the ionization efficiency after recombination in
our treatment of modifications to the CMB. | Source: | arXiv, 2003.2273 | Services: | Forum | Review | PDF | Favorites |
|
|
No review found.
Did you like this article?
Note: answers to reviews or questions about the article must be posted in the forum section.
Authors are not allowed to review their own article. They can use the forum section.
browser claudebot
|
| |
|
|
|
| News, job offers and information for researchers and scientists:
| |