Single Production of Vector-Like Top Quark in the Littlest Higgs Model at TeV Energy e-γ Colliders

The existence of a new coloured vector-like heavy fermion T is a crucial prediction in little Higgs models, which play a key role in breaking the electroweak symmetry. The littlest Higgs model is the most economical one among various little Higgs models. In the context of the littlest Higgs model, we study single production of the new heavy vector-like quark and discuss the possibility of detecting this new particle in the future LC experiment. It is found thai, the production cross section is in the range of 1.7× 10^-3 - 30 fb at TeV energy electron-photon collider with √s- 3 TeV and a yearly integrated luminosity of ,￡ = 500 fb^-1.     

小Higgs模型对顶夸克在eγ对撞机上产生的影响

在最小Higgs模型和T宇称下的最小Higgs模型中, 计算了单个顶夸克的产生 过程e^－γ→ν_ebt的产生截面, 并讨论了这两种模型对该过程产生截面的贡献. 发现在合适的参数范围内, 来自T宇称下的最小Higgs模型中对Wtb耦合的修正项对该过程产生截面的相对修正大于5%,这种影响能在将来的直线对撞机实验中探测到. 然而, 在最小Higgs模型中, 新的规范玻色子W±H对该过程的贡献非常小.     

二硝酸二（辛基己内酰胺）合铀酰（Ⅱ）配合物的合成和结构

在有机溶剂中合成了UO_2[CH_2(CH_2)4CONC_8H_(17)]_2(NO_3)_2(化学式为C_(28)H_(54)N_4O_(10)U),晶体属三斜晶系,P1空间群,晶胞参数:a=0.8986(2)nm,b=0.9750(2)nm,c=2.3687(4)nm;α=82.70(1)°.β=81.29(2)°,γ=61.67(1)°;V=1.8020(6)nm~3,Z=2,D_c=1.56g/cm~3,R=0.036.配合物中铀酰离子由6个氧原子配位,其中4个来自2个硝酸根,另两个来自2个辛基己内酰胺的羰基.在单胞中,2个配合物分子的4条八原子碳链相互吸引,组成了环状二聚体.     

不同晾制方式对德雪1号晾制过程中生理变化的影响

为科学合理制定德雪1号烟叶晾制办法、促进优质雪茄烟叶的生产,以德雪1号下部叶为试验材料,研究其在不同晾制方式下的晾制期间色素降解以及水分动态变化规律,对比调制后烟叶化学成分。结果表明:不同晾制方式下,德雪1号下部叶叶片失水都表现为先慢后快的变化规律,常规晾制方式下烟叶叶片失水较快而主脉失水较慢,晾房晾制方式下烟叶叶片失水较慢而主脉失水较快;常规晾制方式烟叶色素降解速度前期快、后期慢,而晾房晾制方式烟叶色素降解速度前期慢、后期快;与常规晾制方式对比,晾房晾制调制后烟叶糖含量高,总氮烟碱含量低。综上所述,采用晾房晾制烟叶水分代谢协调,色素类物质降解充分,调制后烟叶化学成分协调,有利于提高德雪1号优质茄衣产量、改善调制后烟叶品质,可在实际生产中进行推广应用。     

Sobo1eV空间带 S(R)(S≥O)的小波框架展开的局部化

建立了Sobolev空间带S(R)(S≥0)的小波框架展开的局部化定理,使得L2(R)的小波框架展开局部化,只是该定理S=0的特例.     

无机化学教学中渗透计算机多媒体技术的探索

该文以无机化学教学中如何增开计算机多媒体技术课为主题,围绕计算机多媒体技术在现代化教学和无机化学教学中的作用,开课的硬件以及课程设置进行了探讨。     

液体磁铁(磁性液体)的配制方法和性质

使有磁性的微粒均匀地分散在水里,全部液体就像磁铁那样发挥作用。在这个实验中,要研究不容易凝聚的稳定胶体的制作方法及其性质。这种磁性液体(通常叫做磁性流体)有用水作介质的,也有用有机液体做介质的,是很有趣的新物质之一,将来会有很大的用途。     

Probing anomalous top-Higgs couplings at the HL-LHC via H→WW~* decay channels

We study the prospects of probing the anomalous tHq(q=u,c)couplings via SS2L or 3L signatures at the High Luminosity(HL-LHC)run of the 14 Te V CERN collider.We focus on signals of the tH associated production followed by the decay modes t→b?~+ν_?and H→W W~*,and ■ production followed by the decay modes t→b?~+ν_?and■where?=e,μ.Based on two types of H→W W~*decay topologies,one assuming the semileptonic decay mode H→W W~*→?~+νjj and the other the fully leptonic decay mode■,we perform a full simulation for signals and backgrounds.It is shown that,at the future HL-LHC,the branching ratio Br(t→uh)(Br(t→ch))can be probed to 1.17(1.56)×10~(-3)for the same-sign di-lepton channel,and to7.1×10~(-4)(1.39×10~(-3))for the 3L channel at 3σsensitivity.     

Production of Charged Higgs Bosons from Left-Right Twin Higgs Model at TeV Energy e-γ Colliders

The left-right twin Higgs （LRTH） model predicts the existence of three additional Higgs bosons： one neutral Higgs φo and a pair of charged Higgs bosons φ±. In this paper, we study two pair production processes of these new particles at the next generation eγ colliders, i.e., e-γ → e-φ＋φ- , and e-γ→vRφ-φ0. We find that the production cross section of the process e-γ → e-φ＋φ- are at the level of several tens fb, the production cross section of the process e-γ→vRφ-φ0 can reach 0.35 fb with the reasonable parameter values. As long as the charged Higgs bosons are not too heavy, we conclude that these processes might be used to test for the left-right twin Higgs model in future high-energy linear collider experiments.