共查询到20条相似文献,搜索用时 171 毫秒
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计算了Topcolor辅助的人工色模型中的赝标哥尔斯通玻色子对超高能正负电子对撞机上的e^+e^-→tc(ct)过程的修正,发现在质心能量为√s=200GeV时新物理对该过程的修正结果比标准模型的结果高出约1个量级,如果选质心能量为√s=500GeV得到结果为σ(e^+e^-→tc)~10^-37cm^2。 相似文献
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对于一个原子平均体积为V,温度为T的热力学系统,体系的Helmboltz自由能可以写为F(V,T)=Ec(V)+Fion(V,T)+Fel(V,T)+Fman(V,T)其中Ec为0-K冷能。对于其中的电子热激发贡献Fel,目前流行的有三种计算方案,即:Moruzzi的Debye-Grueneisen方案、Moriarty的MGPT方案和Wasserman的CELL模型方案。Debye-Gruene 相似文献
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Chen Xiangrong Gou Qingquan Pang Xiaofeng Institute of Atomic Molecular Science at High Temperature High Pressure Sichuan Union University Chengdu China 《原子与分子物理学报》1997,(3)
CALCULATIONFORSTRETCHINGVIBRATIONALSPECTRUMOFCH4ChenXiangrongGouQingquanPangXiaofengInstituteofAtomicandMolecularScienceatHig... 相似文献
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Pang Xiaofeng International Centre for Material Physics Academia Sinica Dept. of Physics Southwest Institute for Nationalities The Institue of Atomic Molecular Physics Sichuan Union UniversityShenyang Chengdu Chengdu 《原子与分子物理学报》1997,(1)
ASTATISTICALTHEORYFORTHEBIO-PHOTONEMISSIONOFTHELIVINGSYSTEMSPangXiaofengInternationalCentreforMaterialPhysics,AcademiaSinicaD... 相似文献
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Chen Chen Mei Liangmo Department of Physics Shandong University Jinan P.R.China Guo Huiqun Zhao Jiangao State Key Lab. of Magnetism Institute of Physics Chinese Academy of Sciences Beijing P.R.China 《原子与分子物理学报》1997,(2)
GIANTMAGNETO-IMPEDANCEINFe-BASEDSOFTFERROMAGNETICRIBBONSChenChenMeiLiangmoDepartmentofPhysics,ShandongUniversity,Jinan250100... 相似文献
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Chong-Xing Yue Yu-Ping Kuang Gong-Ru Lu 《Zeitschrift fur Physik C Particles and Fields》1997,74(4):705-707
We calculate the corrections to the Zτ+τ? vertex in the one-family topcolor-assisted technicolor models without exact custodial symmetry contributed from the exchange of extended technicolor (ETC) sideways and diagonal gauge bosons and the topcolor gauge boson Z′. The precise measurements of the τ asymmetry parameter Aτ give strong constraint on the free parameters in the topcolor-assisted technicolor models. 相似文献
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Radiative Corrections to the Zbb and Zτ+τ- Vertices in a Realistic One-Family Extended Technicolor Model
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In a realistic effective one-family extended technicolor(ETC)model without exact custodial symmetry, we calculate the one-loop corrections to the Zbb and Zτ+τ- vertices from the sideways and diagonal ETC gauge boson exchange.The results show that both the Z→ bb partial Width Γb and branching ratio Rb and the τ polarization asymmetry parameter Aτ are enhanced by the corrections and are in agreement with the present experimental data. 相似文献
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We reconsider the non-oblique corrections to the Zbb vertex from the sideways and diagonal ETC boson exchange. We find that the sideways ETC boson exchange decreases the Zbb width while the diagonal ETC boson exchange increases it. For NTC = 2, the correction to the Zbb branching ratio is consistent with the recent measurements. 相似文献
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In the framework of topcolor-assisted technicolor model we calculate the contributions from the preudo Goldstone bosons and new gauge bosons to e^ e^-→ttk.We find that for reasonable ranges of the parameters,the preudo Goldstone bosons afford dominate contribution,the correction arising from new gauge bosons is negligibly small,the maximum of the relative corrections is-10% with the center-of-mass energy √s=500GeV;whereas in the case of √s=1500 GeV,the relative corrections could be up to 16%.Thus large new physics might be observable at the experiments of next-generation linear colliders. 相似文献
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We construct models in which the Higgs doublet whose vacuum expectation breaks SU(2) × U(10 is a bound state of massive strongly interacting fermions. The couplings of the composite Higgs to ordinary fermions are induced by heavy gauge boson exchange in the manner of extended technicolor. Other heavy gauge bosons generate a negative mass term for the Higgs. 相似文献
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XIAO ZhenJun 《理论物理通讯》1999,31(4):611-618
We estimate the cpntributions to HERA e±p deep inelastic scattering process from the color-triplet pseudo-Goldstone bosons appeared in technicolor theory. We find that the F = 0 scalar technicolor leptoquark P3', the lighter mixed state of charge 2/3 color-triplet pseudo-Goldstone bosons, can provide the required extra contributions to account for the excesses of both neutral and charged current events with very high Q2 at HERA simultaneously. 相似文献
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推出了TC理论的中性PG玻色子与规范玻色子(Z、γ、g)的总耦合拉氏量,计算了t夸克圈对中性PG玻色子衰变宽度的影响.结果表明t夸克圈能有效地增加反常耦合强度,为在实验上寻找PG玻包子提供了理论依据. 相似文献
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In the framework of topcolor assisted technicolor (TC2) model, we calculate the contributions of cross section from the pseudo Goldstone bosons and new gauge bosons to e+e- →bb. We find that, within reasonable ranges of the parameters, the corrections arising from technipions and new gauge bosons are negligibly small; and the top pions afford dominate contribution, the maxim cross section corrections can reach 43% with the c.m. energy √s=500GeV; whereas in case of √s=1500GeV, the maxim cross section relative corrections is only 3.1%. It might open a window to detect topcolor assisted technicolor model in the experiment of next generation linear collider. 相似文献