K介子稀有衰变及其对Multiscale Walking Technicolor模型的限制  

Rare K-Decays and its Strong Constraints on the Multiscale Walking Technicolor Model

作　　者：肖振军[1] 吕林霞[1] 张晋宇[1] 郭宏凯[1] 鲁公儒[1] 

机构地区：[1]河南师范大学物理系,新乡453002

出　　处：《高能物理与核物理》1999年第11期1070-1077,共8页High Energy Physics and Nuclear Physics

基　　金：国家自然科学基金

摘　　要：在多标度人工色模型框架下计算了荷电ＰＧ玻色子和对Ｋ介子稀有衰变过程，和的企鹅图贡献．计算结果表明：（ａ）荷电ＰＧ玻色子可以对Ｋ介子稀有衰变分枝比给出１～３个量级的增强；（ｂ）根据现有实验数据，Ｋ．Ｌａｎｅ等人提出的多标度人工色模型基本被排除．We calculate the one-loop Z0-penguin contributions to the rare K-decays,and , from the unit-charged pesudo-Goldstonebosons and in the framework of the Multiscale Walking Technicolor Model.We find that: (a) the and can provide one to three orders enhancements to thebranching ratios of the rare K-decays under study; (b) the assumed mass ranges ofthe unit-charged PGBs in the Multiscale Walking Technicolor Model are excluded bythe rare K-decay data. According to this and other relavent studies, one finds that theMultiscale Walking Technicolor Model are conflict with the data and thereforeexcluded.

关 键 词：K介子稀有衰变 荷电PG玻色子 分枝比 

分 类 号：O572.332[理学—粒子物理与原子核物理]