TESTING A MODEL WITH ADDITIONAL VECTOR FERMIONS AT THE LEP2 COLLIDER

Our aim is to test a model recently presented, motivated by the report ed R(b) and R(c) ''crisis'', which contains extra vector fermions. We suggest an alternative indirect test of the possible existence of new heavy quark flavors at the LEP2 collider, which turns out to give the dearest signal. We calculate q (q) over bar cross-sections within this framework, including one-loop corrections, and find measurable differ ences compared to the Standard Model predictions.