Invisible Higgs in large extra dimensions

Abstract

We discuss the possibility of detecting a Higgs boson in electron-positron collider experiments if large extra dimensions are realized in nature. In such a case, the Higgs boson can decay invisibly by oscillating into a graviscalar Kaluza-Klein (KK) tower. We show that the search for such a Higgs at an $e^{+}{e}^{-}$ linear collider entails more complications than are usually thought of in relation to an invisibly decaying Higgs.

Comments: Four pages, four figures, axodraw, pdproc. Talk presented at the 12th International Conference on Supersymmetry and Unification of Fundamental Interactions, June 17-23, 2004, Epochal Tsukuba, Tsukuba, Japan. Published in KEK Proceedings 2004-12