Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.21/4984
Título: Minimal anomaly-free chiral fermion sets and gauce coupling unification
Autor: Cebola, Luís M.
Emmanuel-Costa, D.
González Felipe, Ricardo Jorge
Simões, C.
Palavras-chave: Grand Unified Theories
Noncommutative Geometry
Standadr Model
Data: Dez-2014
Editora: Amer Physical Society
Citação: CEBOLA, Luís M.; EMMANUEL-COSTA, D.; GONZÁLEZ FELIPE, Ricardo Jorge; SIMÕES, C. – Minimal anomaly-free chiral fermion sets and gauce coupling unification. Physical Review D. ISSN: 1550-7998. Vol. 90, nr. 12 (2014), Art. nr. 125037
Relatório da Série N.º: 125037
Resumo: We look for minimal chiral sets of fermions beyond the standard model that are anomaly free and, simultaneously, vectorlike particles with respect to color SU(3) and electromagnetic U(1). We then study whether the addition of such particles to the standard model particle content allows for the unification of gauge couplings at a high energy scale, above 5.0 x 10(15) GeV so as to be safely consistent with proton decay bounds. The possibility to have unification at the string scale is also considered. Inspired in grand unified theories, we also search for minimal chiral fermion sets that belong to SU(5) multiplets, restricted to representations up to dimension 50. It is shown that, in various cases, it is possible to achieve gauge unification provided that some of the extra fermions decouple at relatively high intermediate scales.
Peer review: yes
URI: http://hdl.handle.net/10400.21/4984
DOI: 10.1103/PhysRevD.90.125037
ISSN: 1550-7998
Aparece nas colecções:ISEL - Física - Artigos

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