Even SIMP miracles are possible
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arXiv
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| Main Authors: | , , |
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| Format: | Preprint |
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2024
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| _version_ | 1866909252813062144 |
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| author | Chu, Xiaoyong Nikolic, Marco Pradler, Josef |
| author_facet | Chu, Xiaoyong Nikolic, Marco Pradler, Josef |
| contents | Strongly interacting massive particles $π$ have been advocated as prominent dark matter candidates when they regulate their relic abundance through odd-numbered $3 π\to2π$ annihilation. We show that successful freeze-out may also be achieved through even-numbered interactions $X X \to ππ$ 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 $3 π\to2π$ annihilation processes, turning them into effective two-body processes $πX \to ππ$. 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 $ϕ^3$ and $ϕ^4$ theories with strong Yukawa or self-interactions. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2401_12283 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Even SIMP miracles are possible Chu, Xiaoyong Nikolic, Marco Pradler, Josef High Energy Physics - Phenomenology High Energy Astrophysical Phenomena Strongly interacting massive particles $π$ have been advocated as prominent dark matter candidates when they regulate their relic abundance through odd-numbered $3 π\to2π$ annihilation. We show that successful freeze-out may also be achieved through even-numbered interactions $X X \to ππ$ 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 $3 π\to2π$ annihilation processes, turning them into effective two-body processes $πX \to ππ$. 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 $ϕ^3$ and $ϕ^4$ theories with strong Yukawa or self-interactions. |
| title | Even SIMP miracles are possible |
| topic | High Energy Physics - Phenomenology High Energy Astrophysical Phenomena |
| url | https://arxiv.org/abs/2401.12283 |