利用OKA装置研究$K^+ \rightarrow \pi^{0} e^{+} \nu \gamma $衰变
高能物理 - 实验
2021-03-17 v1
摘要
介绍了在OKA装置上研究衰变的结果。观测到该衰变超过32000个事例。给出了在K介子静止系中光子能量和光电子张开角的微分谱。针对和中的不同截断，计算了相对于衰变归一化的分支比。特别地，对于 MeV和测得分支比 R = = (0.5870.010()0.015())，与ChPT 计算吻合良好。
引用
@article{arxiv.2010.07983,
title = {Study of $K^+ \rightarrow \pi^{0} e^{+} \nu \gamma $ decay with OKA setup},
author = {A. Yu. Polyarush and V. A. Duk and S. N. Filippov and E. N. Guschin and A. A. Khudyakov and V. I. Kravtsov and Yu. G. Kudenko and S. A. Akimenko and A. V. Artamonov and A. M. Blik and V. S. Burtovoy and S. V. Donskov and A. P. Filin and A. V. Inyakin and A. M. Gorin and G. V. Khaustov and S. A. Kholodenko and V. N. Kolosov and V. F. Kurshetsov and V. A. Lishin and M. V. Medynsky and Yu. V. Mikhailov and V. F. Obraztsov and V. A. Polyakov and V. I. Romanovsky and V. I. Rykalin and A. S. Sadovsky and V. D. Samoilenko and M. M. Shapkin and O. V. Stenyakin and O. G. Tchikilev and V. A. Uvarov and O. P. Yushchenko and V. N. Bychkov and G. D. Kekelidze and V. M. Lysan and B. Zh. Zalikhanov},
journal= {arXiv preprint arXiv:2010.07983},
year = {2021}
}