GUT breaking on the brane

被引：85

作者：

Nomura, Y ^{[1
]}

Smith, D

Weiner, N

机构：

[1] Univ Calif Berkeley, Lawrence Berkeley Lab, Dept Phys, Berkeley, CA 94720 USA

[2] Univ Calif Berkeley, Lawrence Berkeley Lab, Theoret Phys Grp, Berkeley, CA 94720 USA

[3] Univ Washington, Dept Phys, Seattle, WA 98195 USA

来源：

NUCLEAR PHYSICS B | 2001年 / 613卷 / 1-2期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1016/S0550-3213(01)00388-1

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：

We present a five-dimensional supersymmetric SU(5) theory in which the gauge symmetry is broken maximally (i.e., at the 5D Planck scale M*) on the same 4D brane where chiral matter is localized. Masses of the lightest Kaluza-Klein modes for the colored Higgs and X and Y gauge fields are determined by the compactification scale of the fifth dimension, M-C similar to 10(15) GeV, rather than by M*. These fields' wave functions are repelled from the GUT-breaking brane, so that proton decay rates are suppressed below experimental limits. Above the compactification scale, the differences between the standard model gauge couplings evolve logarithmically, so that ordinary logarithmic gauge coupling unification is preserved. The maximal breaking of the grand unified group can also lead to other effects, such as O(1) deviations from SU(5) predictions of Yukawa couplings, even in models utilizing the Froggatt-Nielsen mechanism. (C) 2001 Published by Elsevier Science B.V.

引用

页码：147 / 166

页数：20

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