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Charged Higgs boson in the economical 3-3-1 model
Authors:D V Soa  D L Thuy  L N Thuc  T T Huong
Institution:(1) Department of Physics, Hanoi University of Education, Hanoi, Vietnam;(2) Institute of Physics, VAST, Hanoi, 10000, Vietnam
Abstract:The SU(3) C ⊗ SU(3) L ⊗ U(1) X 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 H 2 ± are scalar bileptons, while the neutral scalar bosons H 0 and H 1 0 do not carry a lepton number. The couplings of the charged Higgs bosons to leptons and quarks are given. We show that Yukawa couplings of H 2 ± to ordinary leptons and quarks are lepton-number violating. The pair production of H 2 ± at high-energy e + e colliders with the polarization of the e +, e beams is studied in detail. A numerical evaluation shows that, if the Higgs mass is not too heavy, then the reaction can give an observable cross section in future colliders at a high degree of polarization. The reaction e + e H 2 ± W is also examined. We show that the production cross sections of H 2 ± W are very small, much below the pair production of H 2 ± , and, therefore, the associated production of H 2 ± and W is, in general, not expected to lead to easily observable signals in the e + e annihilation. The text was submitted by the authors in English.
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