Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2007-10-05
JHEP 0712:001,2007
Physics
High Energy Physics
High Energy Physics - Phenomenology
17 pages and 4 figures
Scientific paper
10.1088/1126-6708/2007/12/001
We propose a top hypercharge model with gauge symmetry SU(3)_C x SU(2)_L x U(1)_1 x U(1)_2 where the first two families of the Standard Model (SM) fermions are charged under U(1)_1 while the third family is charged under U(1)_2. The U(1)_1 x U(1)_2 gauge symmetry is broken down to the U(1)_Y gauge symmetry, when a SM singlet Higgs field acquires a vacuum expectation value. We consider the electroweak constraints, and compare the fit to experimental observables to that of the SM. We study the quark CKM mixing between the first two families and the third family, the neutrino masses and mixing, the flavour changing neutral current effects in meson mixing and decays, the Z' discovery potential at the Large Hadron Collider, the dark matter with a gauged Z_2 symmetry, and the Higgs boson masses.
Chiang Cheng-Wei
Jiang Jing
Li Tiancheng
Wang Yong-Rui
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