Charged Higgs boson in the economical 3-3-1 model |
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Authors: | D V Soa D L Thuy L N Thuc T T Huong |
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Institution: | (1) Department of Physics, Hanoi University of Education, Hanoi, Vietnam;(2) Institute of Physics, VAST, Hanoi, 10000, Vietnam |
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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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Keywords: | |
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