D^0 衰变到 K^0_S π^0 π^0 的分析
高能物理 - 实验
2013-05-29 v1
摘要
我们展示了利用 CLEO-c 探测器在 √s = 3.77 GeV 处积累的 818 pb⁻¹ e⁺e⁻ 碰撞数据对 D^0 → K^0_S π^0 π^0 衰变进行达利兹图分析的结果。这对应于三百万对 D^0 D^0-bar 对，从中我们选出 1,259 个标记候选事例，本底为 (7.5 ± 0.9)%。我们探索了若干模型，所有模型均包含 K^*(892)、K^*_2(1430)、K^*(1680)、f_0(980) 和 σ(500)。我们发现，在我们首选拟合中，组合的 π^0 π^0 S 波贡献占总衰变率的 (28.9 ± 6.3 ± 3.1)%，而 D^0 → K^*(892)^0 π^0 贡献占 (65.6 ± 5.3 ± 2.5)%。利用三种标记模式并修正量子关联后，我们测得 D^0 → K^0_S π^0 π^0 的分支比为 (1.059 ± 0.038 ± 0.061)%。
引用
@article{arxiv.1106.3103,
title = {Analysis of the Decay D^0 to K^0_S pi^0 pi^0},
author = {CLEO Collaboration and N. Lowrey and S. Mehrabyan and M. Selen and J. Wiss and J. Libby and M. Kornicer and R. E. Mitchell and M. R. Shepherd and C. M. Tarbert and D. Besson and T. K. Pedlar and J. Xavier and D. Cronin-Hennessy and J. Hietala and P. Zweber and S. Dobbs and Z. Metreveli and K. K. Seth and A. Tomaradze and T. Xiao and S. Brisbane and L. Martin and A. Powell and P. Spradlin and G. Wilkinson and H. Mendez and J. Y. Ge and D. H. Miller and I. P. J. Shipsey and B. Xin and G. S. Adams and D. Hu and B. Moziak and J. Napolitano and K. M. Ecklund and J. Insler and H. Muramatsu and C. S. Park and L. J. Pearson and E. H. Thorndike and F. Yang and S. Ricciardi and C. Thomas and M. Artuso and S. Blusk and R. Mountain and T. Skwarnicki and S. Stone and J. C. Wang and L. M. Zhang and G. Bonvicini and D. Cinabro and A. Lincoln and M. J. Smith and P. Zhou and J. Zhu and P. Naik and J. Rademacker and D. M. Asner and K. W. Edwards and K. Randrianarivony and G. Tatishvili and R. A. Briere and H. Vogel and P. U. E. Onyisi and J. L. Rosner and J. P. Alexander and D. G. Cassel and S. Das and R. Ehrlich and L. Fields and L. Gibbons and S. W. Gray and D. L. Hartill and B. K. Heltsley and D. L. Kreinick and V. E. Kuznetsov and J. R. Patterson and D. Peterson and D. Riley and A. Ryd and A. J. Sadoff and X. Shi and W. M. Sun and J. Yelton and P. Rubin},
journal= {arXiv preprint arXiv:1106.3103},
year = {2013}
}
备注
11 pages, 3 figures, available through http://www.lns.cornell.edu/public/CLNS/, submitted to PRD