Vices and virtues of Higgs effective field theories at large energy

被引：76

作者：

Biekoetter, Anke ^{[1
]}

Knochel, Alexander ^{[1
]}

Kraemer, Michael ^{[1
]}

Liu, Da ^{[2
,3
]}

Riva, Francesco ^{[2
]}

机构：

[1] Rhein Westfal TH Aachen, Inst Theoret Teilchenphys & Kosmol, D-52074 Aachen, Germany

[2] Ecole Polytech Fed Lausanne, Inst Theorie Phenomenes, CH-1015 Lausanne, Switzerland

[3] Chinese Acad Sci, Inst Theoret Phys, State Key Lab Theoret Phys, Beijing 100190, Peoples R China

来源：

PHYSICAL REVIEW D | 2015年 / 91卷 / 05期

基金：

瑞士国家科学基金会;

关键词：

BOSON; BREAKING;

D O I：

10.1103/PhysRevD.91.055029

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We study constraints on new physics from Higgs production at the LHC in the context of an effective field theory (EFT), focusing on Higgs searches in HV (V = W, Z) associated production which are particularly sensitive to the high-energy behavior of certain dimension-six operators. We show that analyses of these searches are generally dominated by a kinematic region where the generic EFT expansion breaks down, and we establish under which conditions they can nevertheless be meaningful. For example, constraints from these searches on the Wilson coefficients of operators whose effects grow with energy can be established in scenarios where a particular combination of fermions and the Higgs are composite and strongly coupled: then, bounds from Higgs physics at high energy are complementary to LEP1 and competitive with LEP2.

引用

页数：14

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