Improved big bang nucleosynthesis constraints on heavy neutral leptons
Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › fagfællebedømt
Dokumenter
- PhysRevD.104.023517
Forlagets udgivne version, 914 KB, PDF-dokument
We constrain the lifetime of thermally produced heavy neutral leptons (HNLs) from big bang nucleosynthesis. We show that even a small fraction of mesons present in the primeval plasma leads to the overproduction of primordial helium-4. This constrains the lifetime of HNLs to be tau(N) < 0.02 s for masses above the mass of the pion (as compared to 0.1 s reported previously). In combination with accelerator searches, this allows us to put a new lower bound on the HNL masses and define the "bottom line" for HNL searches at the future Intensity Frontier experiments.
Originalsprog | Engelsk |
---|---|
Artikelnummer | 023517 |
Tidsskrift | Physical Review D |
Vol/bind | 104 |
Udgave nummer | 2 |
Antal sider | 13 |
ISSN | 2470-0010 |
DOI | |
Status | Udgivet - 16 jul. 2021 |
Antal downloads er baseret på statistik fra Google Scholar og www.ku.dk
Ingen data tilgængelig
ID: 276162860