Vector-like quarks at the origin of light quark masses and mixing

Abstract We show how a novel fine-tuning problem present in the Standard Model can be solved through the introduction of a $$Z_6$$ Z 6 flavour symmetry, together with three $$Q = - 1/3$$ Q = - 1 / 3 quarks, three $$Q = 2/3$$ Q = 2 / 3 quarks, as well as a complex singlet scalar. The $$Z_6$$ Z 6 symm...

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Bibliographic Details
Main Authors: Francisco J. Botella, G. C. Branco, Miguel Nebot, M. N. Rebelo, J. I. Silva-Marcos
Format: Article
Language:English
Published: SpringerOpen 2017-06-01
Series:European Physical Journal C: Particles and Fields
Online Access:http://link.springer.com/article/10.1140/epjc/s10052-017-4933-3