Probing the scalar potential via double Higgs boson production at hadron colliders

被引：48

作者：

Borowka, Sophia ^{[1
]}

Duhr, Claude ^{[1
,2
]}

Maltoni, Fabio ^{[2
,3
,4
]}

Pagani, Davide ^{[5
]}

Shivaji, Ambresh ^{[2
,6
]}

Zhao, Xiaoran ^{[2
]}

机构：

[1] CERN, Theoret Phys Dept, CH-1211 Geneva 23, Switzerland

[2] Catholic Univ Louvain, Ctr Cosmol Particle Phys & Phenomenol CP3, B-1348 Louvain La Neuve, Belgium

[3] Univ Bologna, Dipartimento Fis & Astron, Via Irnerio 46, I-40126 Bologna, Italy

[4] INFN, Sez Bologna, Via Irnerio 46, I-40126 Bologna, Italy

[5] Tech Univ Munich, James Franck Str 1, D-85748 Garching, Germany

[6] IISER, Dept Phys Sci, Sect 81 SAS Nagar,PO Manauli, Mohali Knowledge City 140306, Punjab, India

来源：

JOURNAL OF HIGH ENERGY PHYSICS | 2019年 / 2019卷 / 04期

关键词：

NLO Computations; Phenomenological Models; PAIR PRODUCTION; NUMERICAL EVALUATION; LHC; NLO;

D O I：

10.1007/JHEP04(2019)016

中图分类号：

O412 [相对论、场论]; O572.2 [粒子物理学];

学科分类号：

摘要：

We present a sensitivity study on the cubic and quartic self couplings in double Higgs production via gluon fusion at hadron colliders. Considering the relevant operators in the Standard Model Effective Field Theory up to dimension eight, we calculate the dominant contributions up to two-loop level, where the first dependence on the quartic interaction appears. Our approach allows to study the independent variations of the two self couplings and to clearly identify the terms necessary to satisfy gauge invariance and to obtain UV-finite results order by order in perturbation theory. We focus on the bb7signature for simplicity and provide the expected bounds for the cubic and quartic self couplings at the 14 TeV LHC with 3000 fb(-1) (HL-LHC) and for a future 100 TeV collider (FCC-100) with 30 ab(-1). We find that while the HL-LHC will provide very limited sensitivity on the quartic self coupling, precision measurements of double Higgs production at a FCC-100 will offer the opportunity to set competitive bounds. We show that combining information from double and triple Higgs production leads to significantly improved prospects for the determination of the quartic self coupling.

引用

页数：37

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