SU(3)F gauge family model and new symmetry breaking scale from FCNC processes

被引：2
作者：
Bao, Shou-Shan [1 ,3 ]
Liu, Zhuo [1 ,2 ]
Wu, Yue-Liang [1 ,2 ]
机构：
[1] Chinese Acad Sci, Inst Theoret Phys, KITPC, SKLTP, Beijing 100190, Peoples R China
[2] UCAS, Beijing 100190, Peoples R China
[3] Shandong Univ, Sch Phys, Jinan 250100, Peoples R China
来源：
NUCLEAR PHYSICS B | 2016年 / 904卷
基金：
中国国家自然科学基金;
关键词：
MINIMAL FLAVOR VIOLATION; CP-VIOLATION; NEUTRINO MASSES; BARYON ASYMMETRY; LEPTON-FLAVOR; PARAMETRIZATION;
D O I：
10.1016/j.nuclphysb.2016.01.002
中图分类号：
O412 [相对论、场论]; O572.2 [粒子物理学];
学科分类号：
摘要：
Based on the SU(3)(F) gauge family symmetry model which was proposed to explain the observed mass and mixing pattern of neutrinos, we investigate the symmetry breaking, the mixing pattern in quark and lepton sectors, and the contribution of the new gauge bosons to some flavour changing neutral currents (FCNC) processes at low energy. With the current data of the mass differences in the neutral pseudo-scalar P-0-(P) over bar (0) systems, we find that the SU(3)(F) symmetry breaking scale can be as low as 300 TeV and the mass of the lightest gauge boson be about 100 TeV. Other FCNC processes, such as the lepton flavour number violation process mu(-) -> e(-)e(+)e(-) and the semi-leptonic rare decay K -> pi(nu) over bar nu, contain contributions via the new gauge bosons exchanging. With the constrains obtained from P-0-(P) over bar (0) system, we estimate that the contribution of the new physics is around 10(-16), far below the current experimental bounds. (C) 2016 The Authors. Published by Elsevier B.V.
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页码：1 / 17
页数：17
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