Topics Beyond Standard Model

• Main Authors: Ho-Chin Tsai, 蔡和進
• Other Authors: 何小剛
• Format: Others
• Language: en_US
• Online Access: http://ndltd.ncl.edu.tw/handle/80134983053705820055

博士 === 臺灣大學 === 物理研究所 === 98 === In part I, we review the background of the standard model of particle physics and cosmology. These standard models, while very successful, have still not been perfected either experimentally or even theoretically. Many questions remain - does Higgs exist? What is the identity of dark matter? Answers to these and other questions may reside beyond the boundaries of the standard models. In part II, we go beyond the standard models and analyze three advanced models by applying basic knowledge to the supersymmetry R-parity violating model, the su- persymmetry R-parity violating model, unparticle physics, a real scalar singlet darkon as dark matte respectively, 1. Supersymmetry . . . system to constrain some couplings K Supersymmetry has drawn much attention to the community. Meson mixing experiments provides a very good testing ground for the standard model and the models BSM. Here we will use the lifetime differences of the D0 − ‾D0 and B0 d,s − ‾B0 d,s system to constrained some couplings of supersymmetry R-parity violating model (SUSY 6R) model by the loop level interactions. 2. ”Unparticle,” a scale invariant sector proposed by Prof. H. Georgi, is discussed and also subjected to the particle and antiparticle oscillation constraints. 3. A gauge singlet dubbed darkon acting as a dark matter candidate is studied. The standard model plus darkon (SM+D) is severely constrained by dark matter direct search experiments and one of its extensions the two Higgs doublets model II plus darkon (THDM II+D) could be constrained much loosely as expected. And two Higgs doublets model III plus darkon (THDM III+D) can offer a checking channel when subjected to the top quark decay at LHC. In part III, we summarize our findings and discuss future prospects. And finally some appendices and reference are provided.