Constraints on the mass spectrum of fourth generation fermions and Higgs bosons

被引：58
|
作者：
Hashimoto, Michio [1 ]
机构：
[1] High Energy Accelerator Res Org, Inst Particle & Nucl Studies, Ctr Theory, Tsukuba, Ibaraki 3050801, Japan
来源：
PHYSICAL REVIEW D | 2010年 / 81卷 / 07期
关键词：
RENORMALIZATION-GROUP EQUATIONS; QUANTUM-FIELD THEORY; ELECTROWEAK SYMMETRY-BREAKING; WEAK-INTERACTIONS; ULTRAHEAVY QUANTA; PAIR PRODUCTION; PHOTON-PHOTON; HIGH-ENERGIES; BOUNDS; QUARK;
D O I：
10.1103/PhysRevD.81.075023
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We reanalyze constraints on the mass spectrum of the chiral fourth generation fermions and the Higgs bosons for the standard model (SM4) and the two Higgs doublet model. We find that the Higgs mass in the SM4 should be larger than roughly the fourth generation up-type quark mass, while the light CP even Higgs mass in the two Higgs doublet model can be smaller. Various mass spectra of the fourth generation fermions and the Higgs bosons are allowed. The phenomenology of the fourth generation models is still rich.
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页数：14
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