A non-chiral extension of the standard model with mirror fermions

Abstract

The difficulties of defining chiral gauge theories non-perturbatively suggest a vector-like extension of the standard model with three mirror fermion families. Some phenomenological implications of such an extension are discussed.

Comments: latex, 6 pages, 1 figure with epsfig. Talk given at the workshop "Beyond the Standard Model V", Balholm, Norway, May 1997