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Título : Is U(1) H a good family symmetry?
Autor : Ponce Gutiérrez, William Antonio
Zepeda, Arnulfo
Mira Martínez, Jesús María
metadata.dc.subject.*: family
fermion
flavor
gauge field theory
group theory
supersymmetry
familia
supersimetria
Fecha de publicación : 1996
Editorial : Springer link
Citación : Ponce-Gutiérrez, W. A., Zepeda, A. & Mira-Martínez, J. M. (1995). Is U(1) H a good family symmetry?. Zeitschrift für Physik C Particles and Fields, 69, 683–686. doi:10.1007/BF02907452
Resumen : We analyze U(1)H as a horizontal symmetry and its possibilities to explain the known elementary-fermion masses. We find that only two candidates, in the context of SU(3)c ⊗ SU(2)L ⊗ U(1)Y ⊗ U(1)H nonsuper-symmetric, are able to fit the experimental result mb«mt. identity, but it is a common prejudice to assume that the appropriate family symmetry may explain this fact as a consequence of (i) and (ii). In what follows we will enlarge the SM gauge group with an extra U(1)H horizontal local gauge symmetry (the simplest multi-family continuous symmetry we can think of). We then show that the structure SU(3)c ⊗ SU(2)L ⊗ U(1)Y ⊗ U(1)H by itself is able to explain (ii), and that the simplest supersymmetric (SUSY) extension of this model without a μ-term can not cope with (ii).
ISSN : 0143-6404
Aparece en las colecciones: CIEN (Centro de Investigaciones en Ciencias Exactas y Naturales)

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