Constraints on the trilinear Higgs self coupling from precision observables

被引：42

作者：

Degrassi, G. ^{[1
,2
]}

Fedele, M. ^{[3
,4
]}

Giardino, P. P. ^{[5
]}

机构：

[1] Univ Rome Tre, Dipartimento Matemat & Fis, I-00146 Rome, Italy

[2] Ist Nazl Fis Nucl, Sez Roma Tre, I-00146 Rome, Italy

[3] Univ Roma La Sapienza, Dipartimento Fis, I-00185 Rome, Italy

[4] Ist Nazl Fis Nucl, Sez Roma, I-00185 Rome, Italy

[5] Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA

来源：

JOURNAL OF HIGH ENERGY PHYSICS | 2017年 / 04期

基金：

美国能源部;

关键词：

Beyond Standard Model; Higgs Physics; BOSON PAIR PRODUCTION; DIAGRAMS; PROGRAM; NLO;

D O I：

10.1007/JHEP04(2017)155

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 the constraints on the trilinear Higgs self coupling that arise from loop effects in the W boson mass and the effective sine predictions. We compute the contributions to these precision observables of two-loop diagrams featuring an anomalous trilinear Higgs self coupling. We explicitly show that the same anomalous contributions are found if the analysis of m(W) and sin(2) theta(lep)(eff) is performed in a theory in which the scalar potential in the Standard Model Lagrangian is modified by an (in) finite tower of Phi(dagger)Phi)(n) terms with Phi the Higgs doublet. We find that the bounds on the trilinear Higgs self coupling from precision observables are competitive with those coming from Higgs pair production.

引用

页数：19

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