%0 Journal Article %T Descent Construction for GSpin Groups %A Joseph Hundley %A Eitan Sayag %J Mathematics %D 2011 %I arXiv %X In this paper we provide an extension of the theory of descent of Ginzburg-Rallis- Soudry to the context of essentially self-dual representations, that is representations which are isomorphic to the twist of their own contragredient by some Hecke character. Our theory supplements the recent work of Asgari-Shahidi on the functorial lift from (split and quasisplit forms of) GSpin(2n) to GL(2n). %U http://arxiv.org/abs/1110.6788v2