sexta-feira, 22 de agosto de 2014

Endowing the Standard Model with a new r-symmetry (World Scientific)

Endowing the Standard Model with a new r-symmetry (World Scientific)


n the Standard Model, there is the single Higgs field, ϕ, which gives rise to constituent quark and lepton masses. The Yukawa coupling is a highly complex set of 3 ×3 matrices, resulting in many textures of quark and lepton masses.
In this talk, we propose to transfer the complexity of the Yukawa coupling matrices to a family of Higgs fields, so that the Yukawa coupling itself becomes a simple interaction.
In the context of an Enriched Standard Model, we introduce a new r-symmetry in the extended SU(2)L ×U(1)Y ×U(1)R model and show how a particularly simple scenario results in a near degeneracy of masses in the 126 GeV region, with a hierarchy of heavier masses suggested by the quark and lepton texture mass matrices.

Ngee-Pong ChangInt. J. Mod. Phys. A29, 1444008 (2014) [11 pages] DOI: 10.1142/S0217751X14440084

Read More: http://www.worldscientific.com/doi/abs/10.1142/S0217751X14440084




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