Abstract
We consider the effect of a doubly charged Higgs boson () on several processes. We find that the effective Hamiltonian that is normally used to interpret the results of muonium-antimuonium oscillation experiments also describes the -channel exchange of a . A limit on the existence of the is extracted from the most recent muonium oscillation result. The effect of exchange on high-energy Bhabha scattering is discussed, and a limit is extracted from the published cross sections of several experiments at the SLAC and DESY storage rings PEP and PETRA. The case of a nondiagonal coupling of the to the charged leptons (nondiagonal in lepton flavor) is considered. A limit is extracted from the result of the most recent search for the rare decay . Finally, a coupling-independent limit is extracted from a recent measurement of the process at PETRA.
- Received 10 April 1989
DOI:https://doi.org/10.1103/PhysRevD.40.1521
©1989 American Physical Society