对辐射 $J/\psi$ 衰变中产生的 $\pi^{0}\pi^{0}$ 系统的振幅分析
高能物理 - 实验
2015-09-23 v2
摘要
介绍了辐射 衰变中产生的 系统的振幅分析。特别地，通过分析了 BESIII 探测器收集的 个 衰变，确定了将 系统动力学描述为 函数的分段函数。该分析的目标是在对振幅中极点的性质或数量做最小假设的前提下，给出 系统标量和张量分量的描述。这种与模型无关的描述使得人们能够在唯象模型开发中将这些结果与其他互补反应的相关结果相整合，进而可直接用于拟合实验数据以获取感兴趣的参数。 的分支比被确定为 ，其中不确定度仅为系统误差，统计误差可忽略。
引用
@article{arxiv.1506.00546,
title = {An amplitude analysis of the $\pi^{0}\pi^{0}$ system produced in radiative $J/\psi$ decays},
author = {BESIII Collaboration and M. Ablikim and M. N. Achasov and X. C. Ai and O. Albayrak and M. Albrecht and D. J. Ambrose and A. Amoroso and F. F. An and Q. An and J. Z. Bai and R. Baldini Ferroli and Y. Ban and D. W. Bennett and J. V. Bennett and M. Bertani and D. Bettoni and J. M. Bian and F. Bianchi and E. Boger and O. Bondarenko and I. Boyko and R. A. Briere and H. Cai and X. Cai and O. Cakir and A. Calcaterra and G. F. Cao and S. A. Cetin and J. F. Chang and G. Chelkov and G. Chen and H. S. Chen and H. Y. Chen and J. C. Chen and M. L. Chen and S. J. Chen and X. Chen and X. R. Chen and Y. B. Chen and H. P. Cheng and X. K. Chu and G. Cibinetto and D. Cronin-Hennessy and H. L. Dai and J. P. Dai and A. Dbeyssi and D. Dedovich and Z. Y. Deng and A. Denig and I. Denysenko and M. Destefanis and F. De Mori and Y. Ding and C. Dong and J. Dong and L. Y. Dong and M. Y. Dong and S. X. Du and P. F. Duan and E. E. Eren and J. Z. Fan and J. Fang and S. S. Fang and X. Fang and Y. 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Zou and J. H. Zou},
journal= {arXiv preprint arXiv:1506.00546},
year = {2015}
}
备注
Submitted to Phys. Rev. D 19 pages, 4 figures