Even SIMP miracles are possible
- Autor(en)
- Xiaoyong Chu, Marco Nikolic, Josef Pradler
- Abstrakt
Strongly interacting massive particles $\pi$ have been advocated as prominent dark matter candidates when they regulate their relic abundance through odd-numbered $3 \pi \to2\pi$ annihilation. We show that successful freeze-out may also be achieved through even-numbered interactions $X X \to \pi \pi $ once bound states $X$ among the particles of the low-energy spectrum exist. In addition, $X$-formation hosts the potential of also catalyzing odd-numbered $3 \pi \to2\pi$ annihilation processes, turning them into effective two-body processes $\pi X \to \pi\pi$. Bound states are often a natural consequence of strongly interacting theories. We calculate the dark matter freeze-out and comment on the cosmic viability and possible extensions. Candidate theories can encompass confining sectors without a mass gap, glueball dark matter, or $\phi^3$ and $\phi^4$ theories with strong Yukawa or self-interactions.
- Organisation(en)
- Teilchenphysik
- Externe Organisation(en)
- Österreichische Akademie der Wissenschaften (ÖAW)
- Publikationsdatum
- 01-2024
- ÖFOS 2012
- 103034 Teilchenphysik
- Schlagwörter
- Link zum Portal
- https://ucris.univie.ac.at/portal/de/publications/even-simp-miracles-are-possible(425261c7-d4c3-45a0-a840-90f15aa7ca30).html