Remarks on double Higgs boson production by gluon fusion at threshold

被引：21

作者：

Li, Xin ^{[1
]}

Voloshin, M. B. ^{[1
,2
,3
]}

机构：

[1] Univ Minnesota, Sch Phys & Astron, Minneapolis, MN 55455 USA

[2] Univ Minnesota, William I Fine Theoret Phys Inst, Minneapolis, MN 55455 USA

[3] Inst Theoret & Expt Phys, Moscow 117218, Russia

来源：

PHYSICAL REVIEW D | 2014年 / 89卷 / 01期

关键词：

PAIR PRODUCTION;

D O I：

10.1103/PhysRevD.89.013012

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The amplitude of double Higgs boson production by the gluon fusion, gg -> hh, is known to be small due to cancellation between the graphs with the boson trilinear coupling and those with the coupling to the top quark. For this reason a study of this process was suggested as a sensitive probe of the Higgs sector nonlinearity. We calculate in a closed analytical form this amplitude at the threshold of the two bosons, where the cancellation is the strongest, and discuss the origin of the small value of the amplitude. We also note that the cancellation in the double boson production is in fact a part of a more general phenomenon of suppression of similar threshold amplitudes for multiple scalar boson production, which, although not directly relevant to the actual top quark and the Higgs boson, can be useful in other studies.

引用

页数：6

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