Arthur's groups $S$ in local Langlands correspondence for certain covering groups of algebraic tori

Abstract: We compute the packets, precisely Arthur's groups $S$, in local Langlands correspondence for Brylinski-Deligne covering groups of algebraic tori, under some assumption on ramification. Especially, this work generalizes Weissman's result on covering groups of tori that split over an unramified extension of the base field.