CP Violation in Higgs Decays due to Majorana Neutrinos

Abstract

The possibility of observing CP violation in the decays of Higgs particles into top-quark, W- and Z-boson pairs induced by heavy Majorana neutrinos is discussed. In the context of minimal "see-saw" models with interfamily mixings, we find that Majorana neutrinos may give rise to sizable CP-odd effects at the one-loop electroweak order. We present numerical estimates of typical CP-odd observables that might be triggered at high-energy e+e- colliders.

6p., LaTeX (to appear in Proc. of the Workshop on e+e- Collisions at 500 GeV: The Physics Potential, Munich, Annecy, Hamburg, ed. by P.M. Zerwas), RAL/93-082