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Searches for dark matter via charged Higgs pair production in the Inert Doublet Model at a γγ collider

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Chinese Physics C 2021年第10期45卷 16-24页

作者： guo-He Yang Mao Song Gang Li Yu Zhang jian-you guo School of Physics and Material Science Anhui UniversityHefei 230601China School of physics Huazhong University of Science and TechnologyHefei 230601China Institutes of Physical Science and Information Technology Anhui UniversityWuhan 430074China

The Inert Doublet Model(IDM)is one of the simplest extensions beyond the Standard Model(SM)with an extended scalar sector,which provides a scalar dark matter particle *** this study,we investigated the double charged Higgs production at aγγ*** scanning the whole parameter space,we obtained the parameter points corresponding to the correct relic abundance of dark *** applying all theoretical and experimental constraints,the parameter space for the existence of dark matter was extremely *** performed an analysis of the signal of H+H-production in the IDM and the SM background,with the optimized selection conditions chosen for the kinematic variables to maximize the signal *** the signal with the background,we obtained the parameter points that may be detected in futureγγcollider experiments.

关键词： dark matter IDM large hadron collider

Research onα-decay for the superheavy nuclei with Z=118-120

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Chinese Physics C 2022年第5期46卷 116-128页

作者： Chen He Zhong-Ming Niu Xiao-Jun Bao jian-you guo School of Physics and Optoelectronics Engineering Anhui UniversityHefei 230601China Department of Physics Hunan Normal UniversityChangsha 410081China

The generalized liquid-drop model(GLDM)with the microscopic shell correction from relativistic Hartree-Fock(RHF)calculations is used to explore theα-decay of superheavy *** known nuclei with Z=106−118 are chosen as examples for *** calculated half-lives ofα-decay agree with the experimental data better than those from the GLDM with the shell correction in the Weizsa¨cker-Skyrme ***,the influence of the decay energy Q_(α) onα-decay is *** is determined that the Q_(α) values obtained from the WS4 model with radial basis function(RBF)correction match the experimental data *** to these advantages,the GLDM with the RHF shell correction and WS4+RBF Q_(α) values is adopted to predict theα-decay lifetime for the unknown superheavy nuclei with Z=118−*** trend of the availableα-decay half-lives according to the neutron number is similar to the trends of the values from the GLDM calculation without shell correction as well as the universal decay law(UDL)***,the RHF shell correction depresses(raises)theα-decay lifetime for most nuclei with N186).In comparison with the half-lives of spontaneous fission,it can be concluded that theα-decay is dominant in the superheavy nuclei ^(281−304)118,^(284−306)119,and ^(287−308)*** results are beneficial to the exploration of superheavy nuclei in experiments.

关键词： generalized liquid-drop model α-decay superheavy nuclei relativistic Hartree-Fock WS4 model

Next-to-leading order QCD corrections to Higgs boson decay to quarkonium plus a photon

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Chinese Physics C 2016年第12期40卷 46-51页

作者： Chao Zhou Mao Song Gang Li Ya-Jin Zhou jian-you guo School of Physics and Material Science Anhui University Hefei 230601 China School of Physics Shandong University Jinan 250100 China

In this paper, we investigate the decay of the Higgs boson to J/ψ（γ ） plus a photon based on NRQCD factorization. For the direct process, we calculate the decay width up to QCD NLO. We find that the decay width for process H → J/ψ（γ ）＋γ direct production at the LO is significantly reduced by the NLO QCD corrections. For the indirect process, we calculate the H→γ＊γ, with virtual 7 substantially decaying to J/ψ（γ）, including all the SM Feynman diagrams. The decay width of indirect production is much larger than the direct decay width. Since it is very clean in experiment, the H →J/ψ（ γ）＋γ decay could be observable at a 14 TeV LHC and it also offers a new way to probe the Yukawa coupling and New Physics at the LHC.

关键词： Higgs boson heavy quarkonium NLO QCD

The first excited single-proton resonance in 15F by complex-scaled Green's function method

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Chinese Physics C 2020年第5期44卷 63-70页

作者： Xin-Xing Shi Quan Liu Dong-Dong Ni jian-you guo Zhong-Zhou Ren School of Physics Nanjing UniversityNanjing 210093China School of physics and materials science Anhui UniversityHefei 230601China Space Science Institute Macao University of Science and TechnologyMacaoChina School of Physics Science and Engineering Tongji UniversityShanghai 200092China Key Laboratory of Advanced Micro-Structure Materials Ministry of EducationShanghai 200092China

The complex-scaled Green's function(CGF)method is employed to explore the single-proton resonance in *** attention is paid to the first excited resonant state 5/2+,which has been widely studied in both theory and ***,past studies generally overestimated the width of the 5/2+*** predicted energy and width of the first excited resonant state 5/2+by the CGF method are both in good agreement with the experimental value and close to Fortune's new ***,the influence of the potential parameters and quadruple deformation effects on the resonant states are investigated in detail,which is helpful to the study of the shell structure evolution.

关键词： single-proton resonance complex-scaled Green's function method narrower width

Exploration of the ground state properties of neutron-rich sodium isotopes using the deformed relativistic mean field theory in complex momentumrepresentations with BCS pairings

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Chinese Physics C 2024年第4期48卷 115-129页

作者：罗雨轩刘泉郭建友 School of physics and Optoelectronic Engineering Anhui UniversityHefei 230601China

This study explores the ground-state characteristics of neutron-rich sodium isotopes,encompassing two-neutron separation energies,root-mean-square radii,quadrupole moments of proton and neutron distributions,single-particle levels of bound and resonant states,and neutron density distributions and ***,special attention is paid to the distinctive physical phenomena associated with these *** deformed relativistic mean field theory in complex momentum representations with BCS pairings(DRMF-CMR-BCS)employed in our research provides resonant states with real physics,offering insights into deformed halo *** effective interactions(NL3,NL3^(*),PK1,and NLSH)were considered to assess the influence of continuum and deformation effects on halo *** for odd-even nuclei ^(35–43)Na revealed the dependence on the chosen effective interaction and number of considered resonant *** occupation patterns near the Fermi surface,particularly in orbitals 1/2^(−)_(3) and 3/2^(−)_(2),were determined to be crucial in halo *** study provided detailed insights into the density distributions,shape evolution,and structure of neutron-rich sodium isotopes,contributing valuably to the field of nuclear physics.

关键词： relativistic mean field complex momentum representations resonant states halo nuclei

Searches for Dark Matter via Mono-W Production in Inert Doublet Model at the LHC

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Communications in Theoretical Physics 2018年第5期69卷 617-624页

作者： Neng Wan Niu Li Bo Zhang Huan Yang Min-Fu Zhao Mao Song Gang Li and jian-you guo Center of Basic Experiment West Anhui University Lu＇an 237012 China School of Physics and Material Science Anhui University Hefei 230039 China

The Inert Doublet Model(IDM) is one of the many beyond Standard Model scenarios with an extended scalar sector, which provide a suitable dark matter particle candidate. Dark matter associated visible particle production at high energy colliders provides a unique way to determine the microscopic properties of the dark matter particle. In this paper, we investigate that the mono-W + missing transverse energy production at the Large Hadron Collider(LHC),where W boson decay to a lepton and a neutrino. We perform the analysis for the signal of mono-W production in the IDM and the Standard Model(SM) backgrounds, and the optimized criteria employing suitable cuts are chosen in kinematic variables to maximize signal significance. We also investigate the discovery potential in several benchmark scenarios at the 14 TeV LHC. When the light Z_2 odd scalar higgs of mass is about 65 GeV, charged Higgs is in the mass range from 120 GeV to 250 GeV, it provides the best possibility with a signal significance of about 3σ at an integrated luminosity of about 3000 fb^(-1).

关键词： large hadron collider IDM dark matter

Explanation of Y(4630) as a hadronic resonant state

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Chinese Physics C 2023年第3期47卷 49-56页

作者：梅晓慧余卓宋昴郭建友李刚罗旋 School of Physics and Optoelectronic engineering Anhui UniversityHefei 230601China School of Physics Southeast UniversityNanjing 210094China

Theorists have given various explanations for the discovery of Y(4630).We find that if Y(4630)is inter-preted as the D-wave resonant state of the ∧_(c)∧_(c)。system,the particle mass,decay width,and all quantum numbers are consistent with experimental *** use the Bonn approximation to obtain the interaction potential of the one boson exchange ***,we extend the complex scaling method to calculate the bound and resonant *** results indicate that the ∧_(c)∧_(c) system can form not only the bound state of the S wave but also the reson-ant state of the high angular momentum,and the ^(3)D_(1) wave resonant state can explain the structure of Y(4630)very Well.

关键词： resonant state one boson exchange model complex scaling method

血浆置换治疗免疫性血小板减少性紫癜疗效的影响因素

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中国实验血液学杂志 2022年第5期30卷 1567-1571页

作者：顾小文尤建国淮安市第一人民医院输血科江苏淮安223300

目的:观察血浆置换治疗免疫性血小板减少性紫癜(ITP)患者的疗效,并分析ITP经血浆置换治疗后疗效的影响因素。方法:回顾性分析2013年1月-2021年1月淮安市第一人民医院收治的39例ITP经血浆置换治疗有效的患者病历资料,设为有效组;另收集... 详细信息

目的:观察血浆置换治疗免疫性血小板减少性紫癜(ITP)患者的疗效,并分析ITP经血浆置换治疗后疗效的影响因素。方法:回顾性分析2013年1月-2021年1月淮安市第一人民医院收治的39例ITP经血浆置换治疗有效的患者病历资料,设为有效组;另收集同期本院收治的39例ITP经血浆置换治疗无效的患者病历资料,设为无效组。收集并记录患者性别、年龄等一般资料和入院时的实验室指标,纳入可能的影响因素,经Logistic回归模型分析检验血浆置换治疗ITP疗效的影响因素。结果:无效组患者入院时血清白细胞介素(IL)-6、IL-18、B淋巴细胞激活因子(BAFF)水平均明显高于有效组,幽门螺杆菌(HP)感染及脾肿大占比均明显高于有效组(P0.05)。经单因素分析后,建立多元回归模型分析显示,脾肿大、HP感染、入院时血清IL-6、IL-18、BAFF过表达均可能是血浆置换治疗ITP无效的影响因素(OR>1,P<0.05)。结论:入院时血清IL-6、IL-18、BAFF过表达及脾肿大、HP感染等均可能是导致ITP经血浆置换治疗后无效的影响因素。

关键词：免疫性血小板减少性紫癜血浆置换疗效白细胞介素 B细胞激活因子

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发动机排气系统结构优化设计与仿真研究

机械设计与制造 2023年第5期387卷 287-291页

作者：刘飞韩冰尤建国上海工程技术大学机械与汽车工程学院上海201620 中汽数据(天津)有限公司天津300300

为确定排气系统设计结构特性,对排气系统的流场、内外壁热负荷、振动特性进行了数值仿真分析。应用湍流模型,分析了排气系统的内流场特性,对排气系统的结构进行了优化设计;根据优化设计结果,对排气系统内外壁的热负荷特性、振动特性等... 详细信息

为确定排气系统设计结构特性,对排气系统的流场、内外壁热负荷、振动特性进行了数值仿真分析。应用湍流模型,分析了排气系统的内流场特性,对排气系统的结构进行了优化设计;根据优化设计结果,对排气系统内外壁的热负荷特性、振动特性等进行了仿真分析,为发动机性能的提升提供了重要的设计基础。

关键词：发动机排气系统结构优化设计仿真分析