中文

来自精确LEP测量的 $g_5^Z$ 界限

高能物理 - 唯象学 2009-10-28 v2

摘要

宇称破坏但CP守恒的反常三规范玻色子耦合 g5Zg_5^ZZZ 玻色子与费米子的左手耦合产生一个普适贡献。我们发现,LEP对部分 ZZ 宽度和轻子前后不对称性的测量精度足以将 g5Z|g_5^Z| 限制在约  10%\sim~10\% 以内。这个界限明显优于目前从稀有 KKBB 介子衰变中获得的界限。

关键词

引用

@article{arxiv.hep-ph/9406324,
  title  = {Bounds on $g_5^Z$ from Precision LEP Measurements},
  author = {S. Dawson and G. Valencia},
  journal= {arXiv preprint arXiv:hep-ph/9406324},
  year   = {2009}
}

备注

Phys. Lett. B333 (1994) 207. A few minor errors in the table are corrected and updated experimental and theoretical numbers are used. The conclusions are unchanged. These changes will appear in an erratum to the published paper