Abstract New dark sectors consisting of exotic fields that couple only very feebly to the Standard Model (SM) have strong theoretical motivation and may be relevant to explaining the abundance of dark matter (DM). An important question for such sectors is how they connect to the SM. For a dark sector with a new gauge interaction. a natural connection arises from heavy vector-like ferm... https://hollandscountryclothinges.shop/product-category/training-reins/