Model-independent Veltman condition,naturalness and the little hierarchy problem

作     者：Fayez Abu-Ajamieh Fayez Abu-Ajamieh

作者机构：LUPM UMR5299Universitéde Montpellier34095 MontpellierFrance 

出 版 物：《Chinese Physics C》 (中国物理C（英文版）)

年 卷 期：2022年第46卷第1期

页      面：31-42页

核心收录：

学科分类：07[理学] 070202[理学-粒子物理与原子核物理] 0702[理学-物理学] 

基　　金：Support by the OCEVU Labex(ANR-11-LABX-0060) the A*MIDEX project(ANR-11-IDEX-0001-02)funded by the"Investissements d'Avenir"French government program managed by the ANR 

主　　题：effective field theory Higgs little hierarchy problem quadratic divergence fine-tuning unitarity byeond the standard model 

摘      要：We adopt a bottom-up Effective Field Theory(EFT)approach to derive a model-independent Veltman condition to cancel out the quadratic divergences in the Higgs *** show using the equivalence theorem that all the deviations in the Higgs couplings to the W and Z from the SM predictions should *** argue based on tree-level unitarity that any new physics that naturally cancels out the quadratic divergences should be ≤19 *** show that the level of fine-tuning required is unless the O(0:1%-1%) UV sector has a symmetry that forces the satisfaction of the model-independent Veltman condition,in which case all fine-tuning is *** also conjecture that,if no new physics that couples to the Higgs is observed up to~19 TeV,or if the Higgs couplings to the SM particles conform to the SM predictions,then the Higgs either does not couple to any UV sector or is fine-tuned.