The rare decay K+→π+-ν(ν)over-bar and effects of charged technipions

被引：0
|
作者：
Xiao, ZJ [1 ]
Zhang, JY
Lü, LX
Guo, HK
Lu, GR
机构：
[1] Henan Normal Univ, Dept Phys, Xinxiang 453002, Peoples R China
[2] Peking Univ, Dept Phys, Beijing 100871, Peoples R China
[3] Rutherford Appleton Lab, Didcot, Oxon, England
来源：
COMMUNICATIONS IN THEORETICAL PHYSICS | 1999年 / 32卷 / 02期
关键词：
rare FCNC decay; charged technipion; branching ratio;
D O I：
暂无
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
In this paper we calculate the contributions to the FCNC rare decay K+ --> pi(+)<nu(nu)over bar> from the charged technipion P+/- and P-8(+/-) in the framework of technicolor theory. We find that: (a) P+/- can provide a positive but relatively small contribution to the K+ --> pi(+)<nu(nu)over bar> process; (b) the contribution is large and positive for relatively light P-8(+/-) and becomes negative for m(p8) greater than or equal to 531 GeV; (c) the enhancement to the ratio BR(K+ --> pi(+)<nu(nu)over bar>) can be as large as a factor of 30 for m(p1) = 50 GeV and m(p8) = 100 GeV; (d) the lower mass bound on m(p8) is m(p8) > 220, 190 GeV for m(p1) = 50, 200 GeV, respectively.
引用
收藏
页码：287 / 292
页数：6
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