A note on dimension-5 operators in GUTs and their impact

被引：53

作者：

Chakrabortty, Joydeep ^{[1
]}

Raychaudhuri, Amitava ^{[1
,2
]}

机构：

[1] Harish Chandra Res Inst, Allahabad 211019, Uttar Pradesh, India

[2] Univ Calcutta, Dept Phys, Kolkata 700009, W Bengal, India

来源：

PHYSICS LETTERS B | 2009年 / 673卷 / 01期

关键词：

Grand Unified Theories; LEFT-RIGHT-SYMMETRY; UNIFIED GAUGE-THEORIES; NEUTRINO MASSES; SPONTANEOUS COMPACTIFICATION; GRAND UNIFICATION; SUPERSYMMETRIC SO(10); PARITY; VIOLATION; MODEL; PREDICTIONS;

D O I：

10.1016/j.physletb.2009.01.065

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Quantum gravity or string compactification can lead to effective dimension-5 operators in Grand Unified Theories which modify the gauge kinetic terms. We exhaustively discuss the group-theoretic nature of such operators for the popular SU(5), SO(10), and E(6) models. In particular, for SU(5) only a Higgs in the 200 representation can help bring the couplings to unification below the Planck scale and in consistency with proton decay limits while for a supersymmetric version 24. 75, or 200 representations are all acceptable. The results also have a direct application in non-Universality of gaugino masses in a class of supersymmetric models where identical group-theoretic features obtain. (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：57 / 62

页数：6

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