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Composite Twin Dark Matter
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abstract
We consider Fraternal Twin Higgs models where the twin bottom quark, $b'$, is much heavier than the twin confinement scale. In this limit aspects of quark bound states, like the mass and binding energy, can be accurately calculated. We show that in this regime, dark matter can be primarily made of twin baryons containing $b' b' b'$ or, when twin hypercharge is gauged, twin atoms, composed of a baryon bound to a twin $\tau'$ lepton. We find that there are significant regions of parameter space which are allowed by current constraints but within the realm of detection in the near future. The case with twin atoms can alleviate the tension between dark matter properties inferred from dwarf galaxies and clusters.
Forward citations
Cited by 2 Pith papers
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Freeze-Twin Dark Matter
Twin electrons and positrons, frozen in via a massive twin photon, can be the dark matter in mirror twin Higgs models with asymmetric reheating, with the required kinetic mixing matching loop-level expectations.
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Rich Phenomenology from Simple Ingredients: A Review of Confining Dark Sectors
Review of confining dark sectors summarizing dark matter candidates, abundance mechanisms, discovery channels, and applications to the abundance similarity puzzle.
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