CHARGED HIGGS BOSON IN THE ECONOMICAL 3-3-1 MODEL
Soa D.V., Dao Le Thuy, Le Nhu Thuc

Поступила в редакцию: 14 Марта 2007

PACS: 12.60.Fr, 14.80.Cp, 12.60.Cn, 14.80.Mz

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The gauge model with two Higgs triplets (the economical 3-3-1 model) is presented. The minimal Higgs potential is considered in detail, and new Higgs bosons with the mass proportional to the bilepton mass are predicted. In the effective approximation, the charged Higgs bosons are scalar bileptons, while the neutral scalar bosons H⁰ and H⁰₁ do not carry lepton number. The couplings of the charged Higgs bosons to leptons and quarks are given. We show that Yukawa couplings of to ordinary leptons and quarks are lepton-number violating. Pair production of at high-energy e⁺ e^- colliders with polarization of the e⁺, e^- beams is studied in detail. Numerical evaluation shows that if the Higgs mass is not too heavy then the reaction can give observable cross section in future colliders at high degree of polarization. The reaction is also examined. We show that the production cross sections of are very small, much below the pair production of , and therefore the associated production of and is in general not expected to lead to easily observable signals in e⁺e^- annihilation.