W-BOSON-LOOP VERSUS ULTRAHEAVY-FERMION-LOOP CONTRIBUTIONS TO THE PROCESS GAMMA-GAMMA-]ZETA-ZETA

被引：12

作者：

BAJC, B

机构：

[1] Joef Stefan Institute, University of Ljubljana

来源：

PHYSICAL REVIEW D | 1993年 / 48卷 / 05期

关键词：

D O I：

10.1103/PhysRevD.48.R1907

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The computation of the cross section for gammagamma --> ZZ to one-loop order in the standard model with m(Higgs) = 100 GeV shows that the W-loop contribution dominates the unpolarized cross section. A signal of a hypothetical fourth family of ultraheavy particles could be detected at energies below the fourth-family mass only if both final Z are longitudinal. The mass, however, could not be determined because the results are insensitive to its value.

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页码：R1907 / R1909

页数：3

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