TeV scale unification in four dimensions versus extra dimensions

被引：18

作者：

Berezhiani, Z ^{[1
]}

Gogoladze, I

Kobakhidze, A

机构：

[1] Univ Aquila, I-67010 Coppito, AQ, Italy

[2] Ist Nazl Fis Nucl, Lab Nazl Gran Sasso, I-67010 Assergi, AQ, Italy

[3] Abdus Salaam Int Ctr Theoret Phys, I-34100 Trieste, Italy

[4] Univ Helsinki, Dept Phys, HEP Div, FIN-00014 Helsinki, Finland

[5] Helsinki Inst Phys, FIN-00014 Helsinki, Finland

[6] Georgian Acad Sci, Andronikashvili Inst Phys, GE-380077 Tbilisi, Georgia

来源：

PHYSICS LETTERS B | 2001年 / 522卷 / 1-2期

基金：

芬兰科学院;

关键词：

D O I：

10.1016/S0370-2693(01)01253-9

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The gauge coupling constant unification at the low (O(TeV)) scale can be obtained just in four dimensions, without the help of the power like renormalization group evolution in extra dimensions, due to the presence of some extra particle states at intermediate scales. We show explicit examples of such extra states in the range of 100 GeV - 1 TeV which can easily be observed on future colliders and can have an important impact on the particle phenomenology. In particular, we show that the presence of a single colourless Dirac Fermion with the weak isospin T = 3 and the hypercharge Y = 8 with the mass of few hundred GeV would lead to the gauge coupling unification in the TeV range. The problems of the low scale grand unification and proton stability are also discussed. (C) 2001 Published by Elsevier Science B.V.

引用

页码：107 / 116

页数：10

共 59 条

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