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(Referência obtida automaticamente do Web of Science, por meio da informação sobre o financiamento pela FAPESP e o número do processo correspondente, incluída na publicação pelos autores.)

Fermion mass hierarchy and double seesaw mechanism in a 3-3-1 model with an axion

Texto completo
Autor(es):
Dias, A. G. [1] ; Leite, J. [1] ; Lopes, D. D. [1] ; Nishi, C. C. [2]
Número total de Autores: 4
Afiliação do(s) autor(es):
[1] Univ Fed ABC, Ctr Ciencias Nat & Humanas, BR-09210580 Sao Paulo - Brazil
[2] Univ Fed ABC, Ctr Matemat Comp & Cognicao, BR-09210580 Sao Paulo - Brazil
Número total de Afiliações: 2
Tipo de documento: Artigo Científico
Fonte: Physical Review D; v. 98, n. 11 DEC 10 2018.
Citações Web of Science: 5
Resumo

We present a model based on the SU(3)(C)circle times SU(3)(L)circle times U(1)(X) gauge symmetry that relates the mass hierarchy of the fermions with the solution to the strong CP problem through the U(1)(PQ) Peccei-Quinn symmetry. This last symmetry arises accidentally with the imposition of a discrete Z(9) symmetry, which also secludes the different scales in the double seesaw mechanism taking place in the neutrino sector. The symmetry breakdown is performed by three scalar triplets plus a scalar singlet hosting an axion field, whose particle excitation can be a component of dark matter. We show a mechanism where a small effective vacuum expectation value is generated for a scalar triplet which is supposed to have a hare mass above the energy scale where the SU(3)(L) circle times U(1)(X) symmetry is broken. Combined with the energy scale in which the U(1)(PQ) is broken, such a mechanism gives rise to a natural hierarchy to the fermions. Beyond the Standard Model particle content, the model predicts an invisible axion, a, three GeV neutrinos, N-iL, plus several new particles at the TeV scale which are: five vector bosons, U-+/-,V-0, ,V-0 dagger, and Z'; one up-type U, and two down-type D-a quarks; and at least a CP-even, H-1, plus non-Hermitian neutral, phi(0), phi(0 dagger), scalar bosons. The model may be tested by looking for the possible production of such particles at the LHC. (AU)

Processo FAPESP: 17/23027-2 - Extensões de gauge do modelo padrão: gerando massas naturais para neutrinos e férmions carregados
Beneficiário:Julio Rafael da Silva Leite
Linha de fomento: Bolsas no Brasil - Pós-Doutorado
Processo FAPESP: 14/19164-6 - Desafios para o século XXI em física e astrofísica de neutrinos
Beneficiário:Orlando Luis Goulart Peres
Linha de fomento: Auxílio à Pesquisa - Temático