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Light axion-like particles and the pseudoscalar mesonic decays M →M′v■

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Communications in Theoretical Physics 2024年第9期 39-43页

作者： Guo-Qiang Dai chong-Xing yue Yang-Yang Bu Yi-Hang Wang Department of physics Liaoning Normal University Center for Theoretical and Experimental High Energy Physics Liaoning Normal University

The axion-like particle （ALP） is one kind of the best-motivated new *** consider its production from the pseudoscalar mesonic decays M→M′a,with M being a pseudoscalar meson B or *** upper limits on the flavor-conserving ALP–quark coupling parameter guare obtained by assuming the ALP to be an invisible *** find that the most severe constraint on gucomes from the decay K+→π+v■ for 0.05 Ge V≤Ma≤0.35 Ge V,while the decays B+,0→K+,0v■and B+,0→π+,0υ■can also generate significant constraints.

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Searching for the light leptophilic gauge boson Zx via four-lepton final states at the CEPC

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Chinese Physics C 2024年第4期48卷 59-67页

作者：岳崇兴李妍钰王美舒羽张欣蒙 Department of Physics Liaoning Normal UniversityDalian 116029China Center for Theoretical and Experimental High Energy Physics Liaoning Normal UniversityDalian 116029China

We investigate the possibility of detecting the leptophilic gauge boson Z_(x) predicted by the U(1)Le−Lμmodel via the processes e+e−→ℓ^(+)ℓ^(−)Z_(x)(Z_(x)→ℓ^(+)ℓ^(−))and e+e−→ℓ^(+)ℓ^(−)Z_(x)(Z_(x)→νℓ¯νℓ)at the Circular Electron Positron Collider(CEPC)with a center of mass energy√s=240 GeV and luminosity L=5.6ab^(−1).We provide the expected sensitivities of the CEPC to the parameter space at the 1σ,2σ,3σ,and 5σlevels.

关键词： light gauge boson Z_(x) U(1)L_(e)-L_(μ)model Circular Electron Positron Collider

基于PCA-T-S模糊神经网络底板破坏深度预测

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煤 2024年第1期33卷 46-49页

作者：高兵岳冲赵伟枣矿(集团)付村煤业有限公司山东济宁277605

针对底板破坏深度影响因素较多、数据之间相关性较强的特点,选用了主成分分析法对原始数据进行降维处理,提取出主要指标信息;基于T-S模糊神经网络具有拟合性能强、预测准确度高的优点,建立PCA-T-S模糊神经网络模型。通过阅读大量文献资... 详细信息

针对底板破坏深度影响因素较多、数据之间相关性较强的特点,选用了主成分分析法对原始数据进行降维处理,提取出主要指标信息;基于T-S模糊神经网络具有拟合性能强、预测准确度高的优点,建立PCA-T-S模糊神经网络模型。通过阅读大量文献资料,选取了煤层埋藏深度、煤层倾角、煤层开采厚度、工作面斜长、底板抗破坏能力以及断层的存在性作为底板破坏深度的主要影响因素,选取24组数据进行模型训练,建立预测模型,并对8组数据进行预测,通过与传统T-S模糊神经网络模型及“三下”开采规范收录公式进行对比,分析PCA-T-S模糊神经网络预测模型优于其它两种方法,预测的最大相对误差仅为15.25%.为底板破坏深度预测提供了一种新的预测方法。

关键词：底板破坏深度主成分分析 T-S模糊神经网络预测分析

22MnB5超高强度热冲压成形钢的开发及应用

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塑性工程学报 2024年第1期31卷 195-203页

作者：王欢龙岳重祥张志建周洪宝江苏省(沙钢)钢铁研究院江苏张家港215625

通过成分设计、轧制、退火及热冲压成形过程关键工艺参数的调控,研究分析了冷轧压下率、退火温度及热冲压成形冷却速度对22MnB5超高强度热冲压成形钢(22MnB5钢)微观组织及力学性能的影响。结果表明,22MnB5钢的冷轧压下率控制在50%~60%... 详细信息

通过成分设计、轧制、退火及热冲压成形过程关键工艺参数的调控,研究分析了冷轧压下率、退火温度及热冲压成形冷却速度对22MnB5超高强度热冲压成形钢(22MnB5钢)微观组织及力学性能的影响。结果表明,22MnB5钢的冷轧压下率控制在50%~60%范围时可实现酸连轧的稳定轧制,退火温度控制在780~820℃范围时退火态22MnB5钢的金相组织为均匀细小的铁素体和珠光体,且性能均匀稳定。热冲压成形淬火在冷却速度不低于30℃·s^(-1)时可获得板条尺寸均匀的全马氏体组织。本产品通过了热冲压成形生产线的工业试用,结果表明:热冲压成形后22MnB5钢的屈服强度为1030~1113 MPa、抗拉强度为1480~1520 MPa、伸长率在8.0%以上、硬度HV10不低于500、表面总脱碳层深度均在35μm以下,热冲压成形后零件的尺寸精度、外观均满足客户需求。

关键词： 22MnB5 热冲压成形钢力学性能金相组织热冲压成形

Radiative Dileptonic Decays B_(s)→l^(+)l^(-)γ in the TC2 Model

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Chinese Physics Letters 2012年第7期29卷 51-55页

作者： ZHANG Jiao yue chong-Xing Department of Physics Liaoning Normal UniversityDalian 116029

We investigate the radiative dileptonic decays B_(s)→l^(+)l^(-)γ (l =e,μ and T) in the framework of the topcolor-assisted technicolor (TC2) *** contributions of the new particles predicted by this model to the branching ratios and the forward-backward asymmetry (AFB) of these decays are *** is found that the values of their branching ratios are greater than the standard model (SM) predictions by several times up to one order of magnitude and │AFB│ can also be enhanced by several times in a wide range of the parameter space.

关键词： space branching decay

Anomalous tqγCouplings and Radiative B Meson Decays

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Chinese Physics Letters 2020年第10期37卷 17-20页

作者： Ying Tan chong-Xing yue Department of Physics Liaoning Normal UniversityDalian 116029China

Motivated by the recent ATLAS results in terms of the branching ratios B r(t→qγ),we consider the effects of the anomalous t qγcouplings on the radiative B meson decays¯B→X Dγand B→Vγwith V being light vector mesonsρ,ω,ϕand K∗.Comparing with the corresponding experimental measured data,we obtain the constraints on anomalous t qγcouplings.

关键词： meson branching constraints

Top Quark Chromomagnetic Dipole Moment in the Littlest Higgs Model with T-Parity

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Communications in Theoretical Physics 2008年第8期50卷 441-444页

作者： yue chong-Xing LI Ding Department of Physics Liaoning Normal University Dalian 116029 China

The littlest Higgs model with T-parity, which is called LHT model, predicts the existence of the new particles, such as heavy top quarks, heavy gauge bosons, and mirror fermions. We calculate the one-loop contributions of these new particles to the top quark ehromomagnetic dipole moment （CMDM） AK. We find that the contribution of the LHT model is one order of magnitude smaller than the standard model prediction value.

关键词： top quark chromomagnetic dipole moment the littlest Higgs model with T-parity

Extended Technicolor Dynamics and Single Top Quark Production at the Fermilab Tevatron

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Chinese Physics Letters 1998年第9期15卷 631-633页

作者： yue chong-xing LU Gong-ru CCAST(World Laboratory) P.O.Box 8730Beijing 100080 and Department of Physics He’nan Normal UniversityXinxiang 453002

The large electron positron collider value of branching ratio Rb is larger than the standard model predicted value RSMb,this deviationδRb is treated as an allowed range for the correction to the single top quark production cross sectionσ(tb)arising from the extended technicolor *** is found that the relative correctionδσ(tb)/σ0(tb)is quite large for a certain range of the free parameters in the model,and may be detected in the future proton-antiproton collision experiments.

关键词： dynamics. correction Fermi

Experimental study on cyclic deformation properties of saturated Fujian sand at different loading frequencies

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Underground Space 2023年第6期13卷 150-165页

作者： chong yue Ke Liang Chengshun Xu Xiuli Du Key Laboratory of Urban Security and Disaster Engineering of the Ministry of Education Beijing University of TechnologyBeijing 100124China

In this study,a series of undrained cyclic torsional shear tests were conducted to investigate the effect of cyclic loading frequency f on the pre-liquefaction(shearing contractive(SC)period and initial shearing dilative(ISD)period)and post-liquefaction(late shearing dilative(LSD)period)deformation properties of saturated Fujian *** secant shear modulus G and damping ratioλin the entire cyclic loading process,and the unloading tangent shear modulus G_(L1)and flow deformation tangent shear modulus GL2 in the ISD and LSD periods were adopted to quantitatively characterize the evolution of hysteresis loop with an increase in shear strain amplitude *** test results show that the effect of f on G of saturated Fujian sand in the SC period is not ***,all the G-γ_(a),G_(L1)-γ_(a),and GL2-ca curves in the ISD and LSD periods showed a downward trend with an increase in *** study also proposes a modified method for calculatingλto compensate for the analytical error caused by the non-closure of hysteresis *** with the classical curves that mainly applied in geotechnical engineering,theλfirst increases and then decreases with the increase ofγ***,theλevaluated by the modified method is approximately 10%–15%more than theλevaluated by the traditional method when theλreaches its peak value.

关键词： Sand liquefaction Cyclic loading frequency Hysteresis loop shape Shear modulus Damping ratio