Journal Article

PUBDB-2026-01004

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Photo- and hadrodisintegration constraints on massive relics decaying into neutrinos

Bianco, S. (Corresponding author)DESY* ; Depta, P. F.DESY* ; Frerick, J.Extern*DESY* ; Hambye, T. ; Hufnagel, M.DESY* ; Schmidt-Hoberg, K.

2025
IOP London

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Please use a persistent id in citations: doi:10.1088/1475-7516/2025/11/072  doi:10.3204/PUBDB-2026-01004

Report No.: DESY-25-056; ULB-TH/25-03; arXiv:2505.01492

Abstract: We perform a detailed study of the cosmological constraints on the decay of a relic particle ϕ into neutrinos, ϕ → νν̅, in particular those arising from the observed light-element abundances in the early Universe. Several processes are relevant, including final-state radiation associated with the decay, as well as subsequent interactions of the injected neutrinos with the thermal background neutrinos or between themselves. All processes generically contribute to the production of electromagnetic and often also hadronic material and may therefore induce late-time photodisintegration and hadrodisintegration reactions, i.e. the destruction of light elements that have previously been formed during BBN. Here, we examine this scenario with a Monte-Carlo inspired probabilistic approach rather than Boltzmann techniques, taking into account all of these different reactions as well as their interplay. We find the resulting constraints to be very significant, covering a broad range of previously unexplored masses and lifetimes of the relic source particle.

Keyword(s): big bang nucleosynthesis ; cosmological neutrinos ; physics of the early universe

Note: 67 pages, 19 figures

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Contributing Institute(s):

1. Theorie-Gruppe (T)

Research Program(s):

1. 611 - Fundamental Particles and Forces (POF4-611) (POF4-611)
2. DFG project G:(GEPRIS)390833306 - EXC 2121: Quantum Universe (390833306) (390833306)

Experiment(s):

1. No specific instrument

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Database coverage:
; ; ; Clarivate Analytics Master Journal List ; Current Contents - Physical, Chemical and Earth Sciences ; Essential Science Indicators ; IF >= 5 ; JCR ; National-Konsortium ; SCOPUS ; Science Citation Index Expanded ; Web of Science Core Collection

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Linked articles:

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Preprint Bianco, S. (Corresponding author)DESY* ; Depta, P. F.DESY* ; Frerick, J. ; Hambye, T. ; Hufnagel, M.DESY* ; Schmidt-Hoberg, K.DESY*
Photo- and Hadrodisintegration constraints on massive relics decaying into neutrinos
[10.3204/PUBDB-2025-01239]     Files  Fulltext by arXiv.org BibTeX | EndNote: XML, Text | RIS

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