High-energy vector boson scattering after the Higgs boson discovery

被引：50

作者：

Kilian, Wolfgang ^{[1
]}

Sekulla, Marco ^{[1
]}

Ohl, Thorsten ^{[2
]}

Reuter, Juergen ^{[3
]}

机构：

[1] Univ Siegen, Dept Phys, D-57068 Siegen, Germany

[2] Univ Wurzburg, Fac Phys & Astron, D-97074 Wurzburg, Germany

[3] DESY, Theory Grp, D-22603 Hamburg, Germany

来源：

PHYSICAL REVIEW D | 2015年 / 91卷 / 09期

关键词：

STRONGLY INTERACTING WS; SYMMETRY-BREAKING; CHIRAL LAGRANGIANS; PADE APPROXIMANTS; WW SCATTERING; SIGNALS; CONSTRAINTS; LIGHT; PARAMETERS; PARTICLES;

D O I：

10.1103/PhysRevD.91.096007

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Weak vector-boson W, Z scattering at high energy probes the Higgs sector and is most sensitive to any new physics associated with electroweak symmetry breaking. We show that in the presence of the 125 GeV Higgs boson, a conventional effective-theory analysis fails for this class of processes. We propose to extrapolate the effective-theory ansatz by an extension of the parameter-free K-matrix unitarization prescription, which we denote as direct T-matrix unitarization. We generalize this prescription to arbitrary nonperturbative models and describe the implementation as an asymptotically consistent reference model matched to the low-energy effective theory. We present exemplary numerical results for full six-fermion processes at the LHC.

引用

页数：23

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