排序方式: 共有17条查询结果,搜索用时 31 毫秒
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带电棒怎样吸引软木屑?宋太平(河南南阳师专473061)一、引言在一些教材和思考题集中,有这样一道思考题:带电棒吸引干燥软木屑,木屑接触到棒以后,往往又会剧烈地跳离此棒,试解释之.一般是这样解释的,当木屑被吸引到带电棒上后,带电棒上的一部分电荷传到木... 相似文献
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Using the QCD factorization approach, we investigate the large branching ratios of B→ηK^* decays and the SCKs anomaly of B→φKs decay in the two Higgs doublet model Ⅲ. With the contributions of flavour-changing neutral current mediated by the neutral Higgs bosons H^0, h^0 and A^0 at the tree level, we provide a coherent resolution to these anomalies within the constrained parameter spaces, which are 120 〈|λbs λss| 〈136. This will be really interesting in searching for the signs of new physics. 相似文献
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计算了一代人工色(One Generation Technicolor,简称OGTC)模型中的赝标哥尔斯通玻色子(Pseudo-Goldstone Bosons,简称PGBs)对γγ→bb过程的Yukawa修正.发现在一定的参数范围内,PGBs对γγ→bb散射截面的修正超过10%;而PGBs对过程e+e-→γγ→bb的相对修正,在laser back-scattering photons模式下最大可达-51%,在beamstrahlung photons模式下最大只有-17.9%;这些修正比标准模型和超对称模型下相应粒子的贡献大许多,将为在下一代高能光子碰撞实验上寻找人工色理论的信息提供参考. 相似文献
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In this paper,we calculate the production of a charged top pion in association with a W boson via gg fusion at CERN's Large Hadron Collider in the context of the topcolor assisted technicolor model.We find that the total cross section of pp→gg→W~(±)π_t~(■) is several dozen femtobarns with reasonable values of the parameters,and the total cross section of pp→W~(±)π_t~(■) can reach a few hundred femtobarns when we consider the sum of the contributions of these two parton subprocesses,gg→W~(±)π_t~(■) and b→W~... 相似文献