The Higgs boson resonance width from a chiral Higgs-Yukawa model on the lattice

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• 作者：Philipp Gerhold^a ; ^b ; ¹ ; Karl Jansen^a ; ^{Karl.Jansen@desy.de} ; Jim Kallarackal^a ; ^b ; ²
• 关键词：Higgs&ndash ; Yukawa model ; Higgs boson resonance ; Finite size method
• 刊名：Physics Letters B
• 出版年：2012
• 期刊代码：58_03702693
• 类别：ph
• 出版时间：20 April, 2012
• 卷：710
• 期：4-5
• 页码：697-702
• 文件大小：305 K

摘要

The Higgs boson is a central part of the electroweak theory and is crucial to generate masses for quarks, leptons and the weak gauge bosons. We use a 4-dimensional Euclidean lattice formulation of the Higgs-Yukawa sector of the electroweak model to compute physical quantities in the path integral approach which is evaluated by means of Monte Carlo simulations thus allowing for fully non-perturbative calculations. The chiral symmetry of the model is incorporated by using the Neuberger overlap Dirac operator. The here considered Higgs-Yukawa model does not involve the weak gauge bosons and furthermore, only a degenerate doublet of top- and bottom quarks are incorporated. The goal of this work is to study the resonance properties of the Higgs boson and its sensitivity to the strength of the quartic self-coupling.