Z4 flavor model in Randall-Sundrum model 1

Carlos Alvarado, Alfredo Aranda, Olindo Corradini, Alma D. Rojas, and Eli Santos-Rodriguez
Phys. Rev. D 86, 036010 – Published 24 August 2012

Abstract

Randall-Sundrum models provide a possible explanation of (gauge-gravity) hierarchy, whereas discrete symmetry flavor groups yield a possible description of the texture of Standard Model (SM) fermion masses. We use both these ingredients to propose a five-dimensional extension of the Standard Model where the mass hierarchy of the four-dimensional effective field theory is obtained only using localization parameters of order 1. We consider a bulk custodial gauge symmetry group together with an Abelian Z4 group: the model turns out to yield a rather minimal extension of the SM as it only requires two brane Higgs fields to provide the desired Yukawa interactions and the required spontaneous symmetry breaking pattern. In fact, the presence of an extra dimension allows the use of the Scherk-Schwarz mechanism to contribute to the breaking of the bulk custodial group down to the SM gauge symmetry. Moreover, no right-handed neutrinos are present and neutrino masses are generated radiatively with the help of a bulk charged scalar field that provides the lepton number violation. Using experimental inputs from the Global Neutrino Analysis and recent Daya Bay results, a numerical analysis is performed and allowed parameter regions are displayed.

  • Figure
  • Received 26 June 2012

DOI:https://doi.org/10.1103/PhysRevD.86.036010

© 2012 American Physical Society

Authors & Affiliations

Carlos Alvarado1,*, Alfredo Aranda1,2,†, Olindo Corradini3,‡, Alma D. Rojas1,§, and Eli Santos-Rodriguez4,∥

  • 1Facultad de Ciencias, CUICBAS, Universidad de Colima, Colima, Mexico
  • 2Dual C-P Institute of High Energy Physics, Mexico
  • 3Centro de Estudios en Física y Matemáticas Básicas y Aplicadas Universidad Autónoma de Chiapas, Tuxtla Gutiérrez, Chiapas, Mexico
  • 4International Centre for Theoretical Physics, Meso-American Institute for Science Universidad Autónoma de Chiapas, Tuxtla Gutiérrez, Chiapas, Mexico

  • *arcarlos00@gmail.com
  • fefo@ucol.mx
  • olindo.corradini@gmail.com
  • §alma.drp@gmail.com
  • eli@unach.mx

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Issue

Vol. 86, Iss. 3 — 1 August 2012

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