Multicomponent dark matter from an <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"> <mml:mi>S</mml:mi> <mml:mi>U</mml:mi> <mml:mo stretchy="false">(</mml:mo> <mml:mn>2</mml:mn> <mml:msub> <mml:mo stretchy="false">)</mml:mo>

A multicomponent weakly-interacting dark matter scenario is analyzed, where the candidate dark matter states arise from the <a:math xmlns:a="http://www.w3.org/1998/Math/MathML" display="inline"> <a:mi>S</a:mi> <a:mi>U</a:mi> <a:mo stretchy="false">(</a:mo> <a:mn>2</a:mn> <a:msub> <a:mo stretchy="false">)</a:mo> <a:mi>D</a:mi> </a:msub> <a:mo stretchy="false">→</a:mo> <a:msubsup> <a:mi>Z</a:mi> <a:mn>3</a:mn> <a:mi>D</a:mi> </a:msubsup> <a:mo>×</a:mo> <a:msubsup> <a:mi>Z</a:mi> <a:mn>2</a:mn> <a:mi>acc</a:mi> </a:msubsup> </a:math> symmetry breaking triggered by a vacuum expectation value-developing scalar in the <f:math xmlns:f="http://www.w3.org/1998/Math/MathML" display="inline"> <f:mi>J</f:mi> <f:mo>=</f:mo> <f:mn>3</f:mn> <f:mo>/</f:mo> <f:mn>2</f:mn> </f:math> representation. While the discrete symmetries guarantee at least two stable states, a closer look at the mass orderings of the contrived dark sector reveals the existence of a third dark matter candidate, whose stability effectively results from the tight phase space in the dark boson sector. Regions of masses and couplings where the three dark states furnish a comparable contribution to the observed relic abundance are determined numerically.