φ→μ+μ−衰变的测量
高能物理 - 实验
2019-08-17 v1
摘要
在VEPP-2M e+e−对撞机上，利用SND探测器在φ(1020)共振附近研究了e+e−→μ+μ−过程。通过e+e−→μ+μ−过程截面中的干涉效应，测量了φ介子轻子衰变分支比之积\sqrt{B(φ→μ+μ−) B(φ→e+e−)}=(3.14±0.22±0.14)×10−4。得到了分支比B(φ→μ+μ−)=(3.30±0.45±0.32)×10−4。
引用
@article{arxiv.hep-ex/9905030,
title = {Measurement of the decay phi->mu+mu-},
author = {M. N. Achasov and S. E. Baru and A. V. Bozhenok and D. A. Bukin and S. V. Burdin and T. V. Dimova and V. P. Druzhinin and M. S. Dubrovin and I. A. Gaponenko and V. B. Golubev and V. N. Ivanchenko and P. I. Ivanov and A. A. Korol and S. V. Koshuba and E. A. Perevedentsev and E. E. Pyata and A. A. Salnikov and S. I. Serednyakov and V. V. Shary and Yu. M. Shatunov and V. A. Sidorov and Z. K. Silagadze and Yu. V. Usov},
journal= {arXiv preprint arXiv:hep-ex/9905030},
year = {2019}
}
备注
6 pages, 5 figures, to be published in Physics Letters B