K_L → π^0 e^+ e^- γ 衰变的测量
高能物理 - 实验
2008-11-26 v2
摘要
我们利用 KTeV 探测器报告了对分支比 B(K_L → π^0 e^+ e^- γ) 的新测量结果。该分析使用了 1997 年至 2000 年间收集的完整 KTeV 数据集。我们在 14 个本底事件中重构了 139 个事例，得到 B(K_L → π^0 e^+ e^- γ) = (1.62 ± 0.14 (统计) ± 0.09 (系统)) × 10^{-8}。该结果取代了此前 KTeV 对该分支比的测量值。
引用
@article{arxiv.0706.4074,
title = {Measurement of the Decay KL -> pi0 e+ e- gamma},
author = {KTeV Collaboration and E. Abouzaid and M. Arenton and A. R. Barker and L. Bellantoni and E. Blucher and G. J. Bock and E. Cheu and R. Coleman and B. Cox and A. R. Erwin and C. O. Escobar and A. Glazov and A. Golossanov and R. A. Gomes and P. Gouffon and Y. B. Hsiung and D. A. Jensen and R. Kessler and Y. J. Kim and K. Kotera and A. Ledovskoy and P. L. McBride and E. Monnier and K. S. Nelson and H. Nguyen and R. Niclasen and D. G. Phillips and H. Ping and E. J. Ramberg and R. E. Ray and M. Ronquest and E. Santos and W. Slater and D. Smith and N. Solomey and E. C. Swallow and P. A. Toale and R. Tschirhart and C. Velissaris and Y. W. Wah and J. Wang and H. B. White and J. Whitmore and M. J. Wilking and R. Winston and E. T. Worcester and M. Worcester and T. Yamanaka and E. D. Zimmerman and R. F. Zukanovich},
journal= {arXiv preprint arXiv:0706.4074},
year = {2008}
}
备注
6 pages, 7 figures, Submitted to Phys. Rev. D