使用ISTRA+ 探测器研究K- → π- π⁰γ 中直接光子辐射的实验
高能物理 - 实验
2008-11-26 v1
摘要
使用ISTRA+装置在U-70 PS 25 GeV/c 负次级束中的现场衰变探测，测量了K- → π- π⁰γ 衰变中直接光子辐射在带电π- 动能55至90 MeV 区间的分支比。得到Br(DE)=[0.37±0.39(stat)+-0.10(syst)]×10⁻⁵，该结果与两次停顿型K- 实验的平均值一致，但与三次现场型K- 实验的平均值相差2.5个标准差。该结果亦与最新的理论预测进行了比较。
引用
@article{arxiv.hep-ex/0410049,
title = {Experimental study of direct photon emission in K- --> pi- pi0 gamma decay using ISTRA+ detector},
author = {V. A. Uvarov and S. A. Akimenko and G. I. Britvich and K. V. Datsko and A. P. Filin and A. V. Inyakin and V. A. Khmelnikov and A. S. Konstantinov and V. F. Konstantinov and I. Y. Korolkov 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 O. P. Yushchenko and V. N. Bolotov and V. A. Duk and S. V. Laptev and A. Yu. Polyarush},
journal= {arXiv preprint arXiv:hep-ex/0410049},
year = {2008}
}
备注
13 pages, 8 figures