Phenomenological constraints on SUSYSU(5) GUTs with nonuniversal gaugino masses - art. no. 035001

We study the phenomenological aspects of supersymmetric SU(5) grand unified theories with nonuniversal gaugino masses. For large tan beta, we investig ate constraints fi-om the requirement of successful electroweak symmetry br eaking, the positivity of stau mass squared, and the b-->s gamma decay rate . In the allowed region, the nature of the lightest supersymmetric particle is determined. Examples of mass spectra are given. We also calculate loop corrections to the bottom mass due to superpartners.