eta -> pi+ pi- e+e- 衰变分支比率测量
高能物理 - 实验
2012-08-27 v2
摘要
利用 pd -> 3He eta 于阈值条件下提供的 eta 中子衰变研究，WASA 探测器在 CELSIUS 处于 eta -> pi+ pi- e+e- 衰变的分支比率测量为 (4.3 ± 1.3 ± 0.4) × 10^-4。
引用
@article{arxiv.hep-ex/0609007,
title = {Measurement of the eta->pi+pi-e+e- decay branching ratio},
author = {WASA Collaboration and Chr. Bargholtz and M. Bashkanov and D. Bogoslawsky and H. Calén and F. Capellaro and H. Clement and L. Demirörs and C. Ekström and K. Fransson and L. Gerén and L. Gustafsson and B. Höistad and G. Ivanov and M. Jacewicz and E. Jiganov and T. Johansson and S. Keleta and I. Koch and S. Kullander and A. Kupsc and A. Kuznetsov and I. V. Laukhin and K. Lindberg and P. Marciniewski and R. Meier and B. Morosov and W. Oelert and C. Pauly and H. Pettersson and Y. Petukhov and A. Povtorejko and R. J. M. Y. Ruber and K. Schönning and W. Scobel and R. Shafigullin and B. Shwartz and T. Skorodko and V. Sopov and J. Stepaniak and V. Tchernyshev and P. -E. Tegnér and P. Thörngren Engblom and V. Tikhomirov and A. Turowiecki and G. J. Wagner and M. Wolke and A. Yamamoto and J. Zabierowski and I. Zartova and J. Złomańczuk},
journal= {arXiv preprint arXiv:hep-ex/0609007},
year = {2012}
}
备注
10 pages,6 figures revised version