BARYON-NUMBER VIOLATION WITH IMPROVED INSTANTONS

被引：24

作者：

ARNOLD, PB ^{[1
]}

MATTIS, MP ^{[1
]}

机构：

[1] UNIV CALIF LOS ALAMOS SCI LAB, DIV THEORET, LOS ALAMOS, NM 87545 USA

来源：

PHYSICAL REVIEW LETTERS | 1991年 / 66卷 / 01期

关键词：

D O I：

10.1103/PhysRevLett.66.13

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We consider the question of possible baryon-number violation at TeV energies in electroweak theory. We prove that already at much lower energies, the usual O(4)-symmetric instantons are the wrong ones to use. The true instantons, which we exhibit, are only O(3) symmetric, and in the example we work out, reduce the initial rise in the baryon-number-violating cross section by a factor of 4 in the exponent, in accord with a diagrammatic analysis. Our approach appears extendible to energies of order the sphaleron mass.

引用

页码：13 / 16

页数：4

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