在這篇論文裡，我徹底地檢視了希格斯玻色子藉由違反R宇稱的耦合作用而衰變到tau與渺子的現象。利用完整的一階環狀費曼圖計算，我發現即使已知的實驗限制----尤其像是約小於1電子伏特的中微子質量，給予了R宇稱參數嚴峻的限制，在合理的參數範圍內該衰變仍可佔有顯著的比例。因此，輕子味違反希格斯衰變不僅不該被忽略，也值得後續的實驗關注。基於上述研究分析，我也就希格斯到電子與渺子、以及希格斯到電子與tau此兩種衰變，做個概述。In this dissertation I examine thoroughly the Higgs boson to ?τ decay via processes involving R-parity violating couplings. By means of full one-loop diagrammatic calculation, I found that even if known experimental constraints, particularly including the stringent sub-eV neutrino mass bounds, give strong restrictions on R-parity violating parameters, the branching ratio could still achieve notable value in the admissible parameter space. Therefore, the ?avor violating leptonic Higgs decay may be of interest and should not be overlooked in future experiments. Based on the analysis, I give some comments on the key features of h → e? and h → eτ also.
