Nucleosynthesis constraints on the faint vector portal

Anthony Fradette, Maxim Pospelov, Josef Pradler, Adam Ritz

Research output: Contribution to journalConference articlepeer-review


New Abelian U(1)' gauge bosons Vμ can couple to the Standard Model through mixing of the associated field strength tensor Vμν with the one from hypercharge, FY μν. Here we consider early Universe sensitivity to this vector portal and show that the effective mixing parameter with the photon, κ, is being probed for vector masses in the GeV ballpark down to values 10-10 ≤ κ ≤ 10-14 where no terrestrial probes exist. The ensuing constraints are based on a detailed calculation of the vector relic abundance and an in-depth analysis of relevant nucleosynthesis processes.

Original languageEnglish (US)
Article number01024
JournalEPJ Web of Conferences
StatePublished - 2015
Externally publishedYes
EventInternational Conference Dark Matter, Hadron Physics and Fusion Physics, DHF 2014 - Messina, Italy
Duration: Sep 24 2014Sep 26 2014


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