Djouadi A, Maiani L, Moreau G, Polosa A, Quevillon J, Riquer V
Laboratoire de Physique Théorique, Université Paris-Sud and CNRS, 91405 Orsay, France.
Department of Physics and INFN, "Sapienza" Universtà di Roma, Pizzale Aldo Moro 5, 00185 Roma, Italy ; Theory Unit, CERN, 1211 Genève 23, Switzerland.
Eur Phys J C Part Fields. 2013;73(12):2650. doi: 10.1140/epjc/s10052-013-2650-0. Epub 2013 Nov 27.
We analyze the Minimal Supersymmetric extension of the Standard Model that we have after the discovery of the Higgs boson at the LHC, the hMSSM (habemus MSSM?), i.e. a model in which the lighter boson has a mass of approximately 125 GeV which, together with the non-observation of superparticles at the LHC, indicates that the SUSY-breaking scale is rather high, ≳1 TeV. We first demonstrate that the value ≈125 GeV fixes the dominant radiative corrections that enter the MSSM Higgs boson masses, leading to a Higgs sector that can be described, to a good approximation, by only two free parameters. In a second step, we consider the direct supersymmetric radiative corrections and show that, to a good approximation, the phenomenology of the lighter Higgs state can be described by its mass and three couplings: those to massive gauge bosons and to top and bottom quarks. We perform a fit of these couplings using the latest LHC data on the production and decay rates of the light boson and combine it with the limits from the negative search of the heavier , and states, taking into account the current uncertainties.
我们分析了在大型强子对撞机（LHC）发现希格斯玻色子之后得到的标准模型的最小超对称扩展模型，即hMSSM（我们有超对称标准模型了？），也就是一种较轻玻色子质量约为125 GeV的模型，这与在LHC上未观测到超粒子一起，表明超对称破缺尺度相当高，≳1 TeV。我们首先证明，125 GeV这个值确定了进入MSSM希格斯玻色子质量的主要辐射修正，从而得到一个希格斯区，在很好的近似下，仅能用两个自由参数来描述。第二步，我们考虑直接超对称辐射修正，并表明，在很好的近似下，较轻希格斯态的现象学可以由其质量和三个耦合来描述：与大质量规范玻色子以及与顶夸克和底夸克的耦合。我们利用关于轻玻色子产生和衰变率的最新LHC数据对这些耦合进行拟合，并将其与来自较重玻色子、玻色子负搜索的限制相结合，同时考虑当前的不确定性。
