高统计量 K- -> π0 μ- ν 衰变研究
高能物理 - 实验
2008-11-26 v1
摘要
本文使用 ISTRA+ 质谱仪探测的原位衰变，对 K- -> π0 μ- ν 衰变进行了高统计量研究。共收集约 54 万个事件用于分析。本文测量了衰变型因子 f+(t), f0(t) 的 λ+ 和 λ0 斜率参数：λ+ = 0.0277+-0.0013 (统计)+-0.0009 (系统), λ0 = 0.0183+-0.0011(统计)+-0.0006(系统)，以及 d(λ0)/d(λ+)=-0.348。推导出了可能的偶极子和标量耦合的限制：fT/f+(0)=-0.0007 ± 0.0071，fS/f+(0)=0.0017 ± 0.0014。未观察到型因子中的可见非线性。
引用
@article{arxiv.hep-ex/0312004,
title = {High statistic study of the K- -> pi0 mu- nu decay},
author = {O. P. Yushchenko and S. A. Akimenko and K. S. Belous and G. I. Britvich and I. G. Britvich and K. V. Datsko and A. P. Filin and A. V. Inyakin and A. S. Konstantinov and V. F. Konstantinov and I. Y. Korolkov and V. A. Khmelnikov and V. M. Leontiev and V. P. Novikov and V. F. Obraztsov and V. A. Polyakov and V. I. Romanovsky and V. M. Ronjin and V. I. Shelikhov and N. E. Smirnov and O. G. Tchikilev and V. A. Uvarov and V. N. Bolotov and S. V. Laptev and A. R. Pastsjak and A. Yu. Polyarush},
journal= {arXiv preprint arXiv:hep-ex/0312004},
year = {2008}
}
备注
11 pages, 8 EPS figures, accepted by Physics Letters B