衰变 K⁺ → π⁺μ⁺μ⁻ 的观测
高能物理 - 实验
2008-11-26 v2
摘要
我们观察到了罕见的衰变 K⁺ → π⁺μ⁺μ⁻，并测得分支比率 Γ(K⁺ → π⁺μ⁺μ⁻)/Γ(K⁺ → 所有) = (5.0 ± 0.4（统计）± 0.7（系统）± 0.6（理论）) × 10⁻⁸。我们将此结果与奇异扰动理论的预测以及基于 K⁺ → π⁺e⁺e⁻ 的估计进行了比较。
引用
@article{arxiv.hep-ex/9708012,
title = {Observation of the Decay K+ --> pi+ mu+ mu-},
author = {E787 Collaboration and S. Adler and M. S. Atiya and I-H. Chiang and J. S. Frank and J. S. Haggerty and T. F. Kycia and K. K. Li and L. S. Littenberg and A. Sambamurti and A. Stevens and R. C. Strand and C. Witzig and W. C. Louis and D. S. Akerib and M. Ardebili and M. R. Convery and M. M. Ito and D. R. Marlow and R. A. McPherson and P. D. Meyers and M. A. Selen and F. C. Shoemaker and A. J. S. Smith and E. W. Blackmore and D. A. Bryman and L. Felawka and A. Konaka and Y. Kuno and J. A. Macdonald and T. Numao and P. Padley and J-M. Poutissou and R. Poutissou and J. Roy and A. S. Turcot and P. Kitching and T. Nakano and M. Rozon and R. Soluk},
journal= {arXiv preprint arXiv:hep-ex/9708012},
year = {2008}
}
备注
9 pages, LaTeX, 2 Postscript figures. Version to be published in PRL