We suggest a new CPX-derived scenario for the search of strangephilic MSSM Higgs bosons at the Tevatron and the LHC, in which all neutral and charged Higgs bosons decay predominantly into pairs of strange quarks and into a strange and a charm quark, respectively. The proposed scenario is realized within a particular region of the MSSM parameter space and requires large values of tan(beta), where threshold radiative corrections are significant to render the effective strange-quark Yukawa coupling dominant. Experimental searches for neutral Higgs bosons based on the identification of b-quark jets or tau leptons may miss a strangephilic Higgs boson and its existence could be inferred indirectly by searching for hadronically decaying charged Higgs bosons. Potential strategies and experimental challenges to search for strangephilic Higgs bosons at the Tevatron and the LHC are discussed.
Different approaches are used for the calculation of the SM-like Higgs boson mass in the MSSM: the fixed-order diagrammatic approach is accurate for low SUSY scales; the EFT approach,for high SUSY scales. Hybrid approaches, combining fixed-order and EFT calculations, allow to obtain a precise prediction also for intermediary SUSY scales. Here, we briefly discuss the hybrid approach implemented into the code FeynHiggs. In addition, we show how the refined Higgs mass prediction was used to define new MSSM Higgs benchmark scenarios.
The high precision measurements of the Higgs mass and couplings at the future Higgs factories are sensitive to the parameter space of the Minimal Supersymmetric Standard Model (MSSM). Focused on the dominant stop sector contributions, we study the implication of the Higgs precision measurements on MSSM using multi-variable $χ^2$ fit. The results show nice complementarity between the indirect searches at Higgs factories and the direct searches at the current LHC program.
In this work, we study the implication of Higgs precision measurements at future Higgs factories on the MSSM parameter space, focusing on the dominant stop sector contributions. We perform a multi-variable fit to both the signal strength for various Higgs decay channels at Higgs factories and the Higgs mass. The chi-square fit results show sensitivity to mA, tan beta, stop mass parameter mSUSY as well as the stop left-right mixing parameter Xt. We also study the impact of the Higgs mass prediction on the MSSM and compare the sensitivities of different Higgs factories.
Can we distinguish an MSSM Higgs from a SM Higgs at a Linear Collider?
研究了在e+e线性对撞机上通过测量CP偶Higgs玻色子的分支比来区分标准模型最小超对称扩展（MSSM）CP偶Higgs玻色子和标准模型Higgs玻色子的前景。MSSM希格斯玻色子与SM希格斯玻色子在M_A - tan β平面上的区分区域强烈地依赖于进入对希格斯质量矩阵的辐射修正和希格斯与费米子耦合的超对称参数。在参数空间的某些区域，可以从Higgs分支比测量中提取b夸克质量与其汤川耦合之间关系的超对称修正。
The problems of Standard Model as well as questions related to Higgs boson properties led to the need for modeling of ttH associated production and Higgs boson decay to top quark pair within the MSSM model. With the help of computer programs MadGraph, Pythia and Delphes and using the latest kinematic cuts taken from experimental data obtained at the LHC we predicted the masses of MSSM Higgs bosons, A and H.
Higgs Masses and More in the Complex MSSM with FeynHiggs
我们提出了最新版本2.6的FeynHiggs，用于计算MSSM希格斯玻色子质量和相关观测值，如混合角，分支比和耦合，包括国家的最先进的高阶贡献的程序。其中最重要的新特点是引入了全复O（α t α s）双圈修正，这使得FeynHiggs在费曼图解法中给出了迄今为止最精确的复MSSM中Higgs质量的计算.
在包含三代费米子的最小超对称标准模型（MSSM）中，最轻的中性希格斯粒子h的质量有一个严格的上限，带电希格斯粒子H^+的质量必须与较重的中性希格斯粒子H和赝标量希格斯粒子A接近（在几十GeV以内）。在这份简要报告中，我们指出，在四代MSSM中，h质量的上限要高得多，高达400 GeV，并且H^+通常比A重得多，允许H^+ -> A W^+衰变，这可能会改变带电希格斯粒子和赝标量粒子的搜索策略。另一方面，H质量保持在带电希格斯质量的几十GeV之内。
The possibility of identification of an observable CMS $μ^+ μ^-$ excess at 28 GeV in the channel $pp\to μ^+ μ^- b \bar b$ at $\sqrt{s}$=8 TeV and 13 TeV as a manifestation of one of the minimal supersymmetric standard model (MSSM) Higgs bosons is investigated. The MSSM parametric scenarios in the regime of large threshold corrections involving low-mass CP-odd scalar, a 125 GeV CP-even scalar and other Higgs bosons with suitable masses are found, where the alignment limit conditions for the Higgs couplings are respected. Perturbative unitarity bounds and constraints on the electroweak vacuum st…
