Successful Freeze-Out of Strongly Interacting Dark Matter with Even-Numbered Interactions

Autor(en)
Xiaoyong Chu, Marco Nikolic, Josef Pradler
Abstrakt

Strongly interacting massive particles π have been advocated as prominent dark matter candidates when they regulate their relic abundance through odd-numbered 3π→2π annihilation. We show that successful freeze-out may also be achieved through even-numbered interactions XX→ππ 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 3π→2π annihilation processes, turning them into effective two-body processes πX→ππ. 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 φ3 and φ4 theories with strong Yukawa or self-interactions.

Organisation(en)
Fakultät für Physik, Teilchenphysik
Externe Organisation(en)
Österreichische Akademie der Wissenschaften (ÖAW), University of the Chinese Academy of Sciences
Journal
Physical Review Letters
Band
133
Anzahl der Seiten
7
ISSN
0031-9007
DOI
https://doi.org/10.1103/PhysRevLett.133.021003
Publikationsdatum
07-2024
Peer-reviewed
Ja
ÖFOS 2012
103036 Theoretische Physik
ASJC Scopus Sachgebiete
Physics and Astronomy(all)
Link zum Portal
https://ucrisportal.univie.ac.at/de/publications/successful-freezeout-of-strongly-interacting-dark-matter-with-evennumbered-interactions(f456eb33-589c-48fc-96d4-ece7e6eff0c6).html