Proton decay in intersecting D-brane models

被引：80

作者：

Klebanov, IR ^{[1
]}

Witten, E ^{[1
]}

机构：

[1] Inst Adv Study, Princeton, NJ 08540 USA

来源：

NUCLEAR PHYSICS B | 2003年 / 664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(03)00410-3

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 analyze proton decay via dimension-six operators in certain GUT-like models derived from Type IIA otientifolds with D6-branes. The amplitude is parametrically enhanced by a factor of alpha(GUT)(-1/3) CeGUT relative to the corresponding result in four-dimensional GUTs. Nonetheless, even assuming a plausible enhancement from the threshold corrections, we find little overall enhancement of the proton decay rate from dimension-six operators, so that the predicted lifetime from this mechanism remains close to 10(36) years. (C) 2003 Elsevier B.V. All rights reserved.

引用

页码：3 / 20

页数：18