Topics in Theoretical Physics

9306141谢尔 强相互作用理论（QCD）的一个重要预言是胶球的存在-没有夸克的强相互作用粒子。 计算了高动量转移时各种类型胶球的产生率。 另一个QCD预言涉及到重夸克-轻夸克束缚态的衰变;所有可能观察到的这种系统的两体衰变都将被研究。 我们知道夸克和轻子是以族的形式存在的，而且我们知道只有三个轻中微子，因此第四族的中微子一定很重。 因此，第四族的带电轻子可能非常长寿，寿命从纳秒到几年不等。 我们将详细研究这种长寿轻子的现象学意义，并研究包含这种轻子的模型的其他意义。 最后，高精度的电弱研究需要更好地了解1-9 GeV能量范围内电子-正电子散射的截面，将研究CEBAF今后进行这种测量的可能性。 在代表LBL方面，我们比哈里斯更有领导力。 如果RHIC代表是最重要的，其次是机构代表，那么Nagamiya将是一个比Harris更强的选择。 莫尼兹更希望有一个比目前组成的规模更小、更明智的委员会。 他认为，最近的许多委员会没有表现出人们对NSAC的期望。 休息; 7 r4 F（} ~ t F M F F& F t i M M F SQRV F N; F u| t ^{ t ! ! 一 ( Times New Roman 符号Arial " H / 特里湖希克斯特里湖希克斯

9306141 Sher An important prediction of the theory of strong interactions (QCD) is the existence of glueballs--strongly interacting particles without quarks. The production rates of various types of glueballs at high momentum transfer will be calculated. Another QCD prediction concerns the decays of heavy quark-light quark bound states; all potentially observable two body decays of such systems will be investigated. It has been known for some time that quarks and leptons come in families, and it is known that there are only three light neutrino's; thus the neutrino of a fourth family must be very heavy. As a result, the charged lepton of the fourth family might be very long-lived, with lifetimes ranging from nanoseconds to years. The phenomenological implications of such long-lived leptons will be studied in detail, and the other implications of models which contain such leptons will be studied. Finally, high precision electroweak studies require better knowledge of the cross-section for electron-positron scattering in the 1-9 GeV energy range, and the possibilities of CEBAF making such a measurement in the future will be investigated. e proven leadership than Harris in terms of representing LBL. If RHIC representation is most important, followed by institutional representation, Nagamiya would be a stronger choice than Harris. Moniz would much prefer a smaller and wiser committee than is presently constituted. He felt that many of the recent committee did not perform to the level that one should expect of NSAC. r; 7 r4 F(} ~ t F M F F& F t i M M F SQRV f N; F u| t ^{ t ! ! A ( Times New Roman Symbol & Arial " h / terri l. hicks terri l. hicks