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最小超对称模型中希格斯势的真空稳定性

河北大学学报（自然科学版） 2022年第2期42卷 139-143页

作者：阎贲冯太傅河北大学物理科学与技术学院河北保定071002

讨论了量子场论对希格斯有效势的单圈阶修正与重整化群方程的改进方法,并将这些理论应用于最小超对称模型(minimum supersymmetric model,MSSM).在MSSM框架下讨论了稳定的希格斯有效势对敏感参数tanβ的限制,通过重整化群方程的双圈阶... 详细信息

讨论了量子场论对希格斯有效势的单圈阶修正与重整化群方程的改进方法,并将这些理论应用于最小超对称模型(minimum supersymmetric model,MSSM).在MSSM框架下讨论了稳定的希格斯有效势对敏感参数tanβ的限制,通过重整化群方程的双圈阶数值解,在不同能标下对希格斯势的真空稳定性进行了研究并作出了分析.结果表明,随能标增长希格斯势行为有所变化,但没有出现标准模型那样的不稳定势.

关键词：希格斯势真空稳定性重整化群方程最小超对称

Two loop electroweak corrections from heavy fermions to b→s+γ

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Chinese Physics C 2010年第12期34卷 1797-1811页

作者：杨秀一冯太傅 Department of Physics Dalian University of Technology Center for High Energy Physics Peking University

Applying an effective Lagrangian method and an on-shell scheme, we analyze the electroweak corrections to the rare decay b→, s＋γ from some special two loop diagrams in which a closed heavy fermion loop is attached to the virtual charged gauge bosons or Higgs. At the decoupling limit where the virtual fermions in the inner loop are much heavier than the electroweak scale, we verify the final results satisfying the decoupling theorem explicitly when the interactions among Higgs and heavy fermions do not contain the nondecoupling couplings. Adopting the universal assumptions on the relevant couplings and mass spectrum of new physics, we find that the relative corrections from those two loop diagrams to the SM theoretical prediction on the branching ratio of B → Xsγ can reach 5% as the energy scale of new physics ANp=200 GeV.

关键词： two-loop inclusive decay

Muon anomalous magnetic dipole moment in the μνSSM

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Chinese Physics C 2022年第9期46卷 107-118页

作者：张海斌刘长鑫杨金磊冯太傅 Department of Physics Hebei University Key Laboratory of High-precision Computation and Application of Quantum Field Theory of Hebei Province CAS Key Laboratory of Theoretical Physics Institute of Theoretical PhysicsChinese Academy of Sciences School of Physical Sciences University of Chinese Academy of Sciences College of Physics Chongqing University Department of Physics Guangxi University

Recently,the Muon g-2 experiment at Fermilab measured the muon anomalous magnetic dipole moment(MDM),aμ=(gμ-2)/2,and reported that the new experimental average increases the difference between the experiment and the standard model (SM) prediction to 4.2σ.In this work,we reanalyze the muon anomalous MDM at the two-loop level in the μfrom theνSupersymmetric Standard Model (μνSSM) combined with the updated experimental *** μνSSM can explain the current difference between the experimental measurement and the SM theoretical prediction for the muon anomalous MDM,constrained by the 125 GeV Higgs boson mass and decays,the rare decay■,and so *** also investigate the anomalous MDM of the electron and tau lepton ae=(ge-2)/2and aτ=(gτ-2)/2,at the two-loop level in theμν*** addition,the decaying of the 125 GeV Higgs boson into a pair of charged leptons in the μνSSM is analyzed.

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t→cγ and t→cg in Local Gauged Baryon and Lepton Numbers

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Communications in Theoretical Physics 2014年第1期61卷 95-100页

作者：高铁军冯太傅孙飞 Department of Physics Dalian University of Technology Department of Physics Hebei University

In this paper, we calculate the top quark rare decays t →cγ and v in an extension of the standard model, where baryon number and lepton number are local gauge symmetries. Adopting reasonable assumptions on the parameter space, we find that the branching ratios of t →cγ and t →cg can reach 10^-6 and 10^-5 respectively, which can be detected in near future.

关键词： local gauge symmetry baryon and lepton numbers top quark decays

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在加速器上探测周围的超对称暗物质(英文)

高能物理与核物理 2006年第12期30卷 1225-1229页

作者：冯太傅李学潜马文淦王健雄赵公博南开大学物理系天津300071 中国科学技术大学近代物理系合肥230026 中国科学院高能物理研究所北京100049

探讨了在加速器上直接检测周围超对称暗物质的可能性,计算了暗物质与e^+e^-和强子对撞机上束粒子碰撞的弹性和非弹性散射截面．

关键词：暗物质流直接探测加速器

Neutrino Production via e^-e^+ Collision at Z-Boson Peak

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Communications in Theoretical Physics 2014年第7期61卷 66-70页

作者：张肇西冯太傅候丰尧刘畅潘瓒 CCAST (World Laboratory) State Key Laboratory of Theoretical Physics (KLTP) Institute of theoretical Physics Chinese Academy of Sciences Department of Physics Hebei University Department of Physics Dalian University of Technology Department of Modern Physics University of Science and Technology of China

The production of the three normal neutrinos via e-e+ collision at Z-boson peak(neutrino production in a Z-factory) is investigated thoroughly. The differences of νe-pair production from νμ-pair and ντ-pair production are presented in various aspects. Namely the total cross sections, relevant differential cross sections and the forwardbackward asymmetry etc. for these neutrinos are presented in terms of figures as well as numerical tables. The restriction on the room for the mixing of the three species of light neutrinos with possible externals(heavy neutral leptons and/or sterile neutrinos) from refined measurements of the invisible width of Z-boson is discussed.

关键词： neutrino production e-e+collision Z-boson resonance

Feynman rules for neutrinos and new neutralinos in the BLMSSM

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Chinese Physics C 2016年第9期40卷 29-35页

作者：董幸幸赵树民张海斌王芳冯太傅 Department of Physics and Technology Hebei University Department of Electronic and Information Engineering Hebei University State Key Laboratory of Theoretical Physics (KLTP) Institute of Theoretical PhysicsChinese Academy of Sciences

In a supersymmetric extension of the Standard Model where baryon and lepton numbers are local gauge symmetries（BLMSSM）, we deduce the Feynman rules for neutrinos and new neutralinos. We briefly introduce the mass matrices for the particles and the related couplings in this work, which are very useful to research the neutrinos and new neutralinos.

关键词： supersymmetry Feynman rules mass matrices

Comprehensive analysis of e^+e^-→γηc(2S)

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Chinese Physics C 2013年第7期37卷 13-16页

作者：高铁军冯太傅赵树民寇丽娜 Department of Physics Dalian University of Technology Department of Physics Hebei University

We discuss the production of ηc （2S） through the process e＋e- -→γηc （2S）, where the leading contributionoriginates from l-loop electroweak corrections. Adopting some reasonable light-cone distribution amplitudes, we analyze the cross section of this process. As the electron-positron center of mass energy √s=3770 MeV, the typicalproduction cross section of this process is about 1 fb.

关键词： OZI-forbidden hadronization ηc(2S)

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高能物理的精确计算和精确测量

物理与工程 2019年第5期29卷 34-38,42页

作者：冯太傅张仁友河北大学物理学院河北保定071002 中国科技大学近代物理系安徽合肥230026

随着近半个世纪高能物理的实验装置和测试手段的飞速发展,相应的理论也达到新的高度,人们更深入地认识了自然界最基本的组成结构并了解了它们之间的相互作用,从而建立了非常成功的'标准模型'。然而,像19世纪末物理学家那样盲目乐观的态... 详细信息

随着近半个世纪高能物理的实验装置和测试手段的飞速发展,相应的理论也达到新的高度,人们更深入地认识了自然界最基本的组成结构并了解了它们之间的相互作用,从而建立了非常成功的'标准模型'。然而,像19世纪末物理学家那样盲目乐观的态度却是不可取的,在各领域中仍存在现有理论无法解释的现象。于是,寻找超越标准模型的新物理成为促进理论和实验向新层次发展的动力。众所周知,新物理的能标可能超出目前能取得的能量范围(LHC),因而要在精确测量中寻找新物理发现的蛛丝马迹。因此,对理论计算的精度的要求也在大幅度提升。精确测量和精确计算是探求超越标准模型新物理的两个侧面,缺一不可。它们的进展不仅增进我们对自然界的认识,而且带动了相应高技术的发展。

关键词：精确测量精确计算超越标准模型的新物理