NONPERTURBATIVE CONTRIBUTION TO TOTAL CROSS-SECTIONS IN NON-ABELIAN GAUGE-THEORIES

被引：105

作者：

KHOZE, VV ^{[1
]}

RINGWALD, A ^{[1
]}

机构：

[1] BP KONSTANTINOV NUCL PHYS INST, LENINGRAD, USSR

来源：

PHYSICS LETTERS B | 1991年 / 259卷 / 1-2期

关键词：

D O I：

10.1016/0370-2693(91)90142-D

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We consider the instanton-induced contribution to the total cross section of vector boson scattering in the SU(2) gauge theory with and without Higgs mechanism. The exponential suppression of instanton-induced processes disappears asymptotically at energies far above the infrared cutoff for the instanton scale size, which is provided, in the Higgs (confinement) phase, by the vacuum expectation value (virtuality of the gluons). Instanton-induced processes may therefore be important in close-to-mass-shell gluon collisions. Our finding also suggests that electroweak baryon- and lepton-number violation with the associated production of many W-bosons may become important at very high energies.

引用

页码：106 / 112

页数：7

共 25 条

[21] TOWARD THE QUANTITATIVE THEORY OF THE INSTANTON LIQUID .4. TUNNELING IN THE DOUBLE-WELL POTENTIAL [J].