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Please use this identifier to cite or link to this item: http://acervodigital.unesp.br/handle/11449/23829
Title: 
Custodial symmetry and extensions of the standard model
Author(s): 
Institution: 
Universidade Estadual Paulista (UNESP)
ISSN: 
1550-7998
Abstract: 
We show that the extension of the approximate custodial SU(2)(L+R) global symmetry to all the Yukawa interactions of the standard model Lagrangian implies the introduction of sterile right-handed neutrinos and the seesaw mechanism in this sector. In this framework, the observed quark and lepton masses may be interpreted as an effect of physics beyond the standard model. The mechanism used for breaking this symmetry in the Yukawa sector could be different from the one at work in the vector boson sector. We give three model independent examples of these mechanisms.
Issue Date: 
1-Dec-2006
Citation: 
Physical Review D. College Pk: American Physical Soc, v. 74, n. 11, 5 p., 2006.
Time Duration: 
5
Publisher: 
American Physical Soc
Source: 
http://dx.doi.org/10.1103/PhysRevD.74.115014
URI: 
http://hdl.handle.net/11449/23829
Access Rights: 
Acesso restrito
Type: 
outro
Source:
http://repositorio.unesp.br/handle/11449/23829
Appears in Collections:Artigos, TCCs, Teses e Dissertações da Unesp

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