Abstract
In Randall-Sundrum theories a dark matter candidate can arise consequently to baryon number conservation in the form of a massive right handed Dirac neutrino interacting through an additional SU(2)R gauge group. The neutral SU(2)R gauge boson, called Z′, is supposed to couple only to the Standard Model right handed top quark. In e+e− collisions it will therefore be produced preferentially in top events. Its production is studied in the channel e+e− → tt̄Z′ and a method to measure its mass is proposed. The generator level measurement shows a precision better than 10% for a light Z′ (mZ′ ∊ [200, 500] GeV).
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