Stealth Dark Matter: Dark scalar baryons through the Higgs portal

Understand

We present a new model of "Stealth Dark Matter": a composite baryonic scalar of an $SU(N_D)$ strongly-coupled theory with even $N_D \geq 4$.

• All mass scales are technically natural, and dark matter stability is automatic without imposing an additional discrete or global symmetry.
• Constituent fermions transform in vector-like representations of the electroweak group that permit both electroweak-breaking and electroweak-preserving mass terms.
• This gives a tunable coupling of stealth dark matter to the Higgs boson independent of the dark matter mass itself.