$D^+\to\bar K^0e^+\nu_e$ 与 $D^+\to\pi^0e^+\nu_e$ 半轻子衰变分析
高能物理 - 实验
2017-08-02 v1
摘要
利用在BEPCII对撞机上运行的BESIII探测器于3.773 GeV获取的2.93~fb数据，我们研究了半轻子衰变 和 。我们测量了绝对衰变分支比 和 ，其中第一项不确定度为统计误差，第二项为系统误差。我们还测量了微分衰变率并研究了这两种衰变的形式因子。利用粒子数据组（Particle Data Group）在假设CKM幺正性下的拟合给出的 和 值，我们得到了 处的形式因子值 和 。采用近期这些形式因子的格点QCD计算结果作为输入，我们确定了CKM矩阵元的值 和 ，其中第三项不确定度为理论误差。
引用
@article{arxiv.1703.09084,
title = {Analysis of $D^+\to\bar K^0e^+\nu_e$ and $D^+\to\pi^0e^+\nu_e$ Semileptonic Decays},
author = {BESIII Collaboration and M. Ablikim and M. N. Achasov and S. Ahmed 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 O. Bakina and R. Baldini Ferroli and Y. Ban and D. W. Bennett and J. V. Bennett and N. Berger and M. Bertani and D. Bettoni and J. M. Bian and F. Bianchi and E. Boger 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. Chai and J. F. Chang and G. Chelkov and G. Chen and H. S. Chen and J. C. Chen and M. L. Chen and S. Chen and S. J. Chen and X. Chen and X. R. Chen and Y. B. Chen and X. K. Chu and G. Cibinetto 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 Z. L. Dou and S. X. Du and P. F. Duan and J. Z. Fan and J. Fang and S. S. Fang and X. Fang and Y. Fang and R. Farinelli and L. Fava and F. Feldbauer and G. Felici and C. Q. Feng and E. Fioravanti and M. Fritsch and C. D. Fu and Q. Gao and X. L. Gao and Y. Gao and Z. Gao and I. Garzia and K. Goetzen and L. Gong and W. X. Gong and W. Gradl and M. Greco and M. H. Gu and Y. T. Gu and Y. H. Guan and A. Q. Guo and L. B. Guo and R. P. Guo and Y. Guo and Y. P. Guo and Z. Haddadi and A. Hafner and S. Han and X. Q. Hao and F. A. Harris and K. L. He and F. H. Heinsius and T. Held and Y. K. Heng and T. Holtmann and Z. L. Hou and C. Hu and H. M. Hu and T. Hu and Y. Hu and G. S. Huang and J. S. Huang and X. T. Huang and X. Z. Huang and Z. L. Huang and T. Hussain and W. Ikegami Andersson and Q. Ji and Q. P. Ji and X. B. Ji and X. L. Ji and L. L. Jiang and L. W. Jiang and X. S. Jiang and X. Y. Jiang and J. B. Jiao and Z. Jiao and D. P. Jin and S. Jin and T. Johansson and A. Julin and N. Kalantar-Nayestanaki and X. L. Kang and X. S. Kang and M. Kavatsyuk and B. C. Ke and P. Kiese and R. Kliemt and B. 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Yan and W. B. Yan and W. C. Yan and Y. H. Yan and H. J. Yang and H. X. Yang and L. Yang and Y. X. Yang and M. Ye and M. H. Ye and J. H. Yin and Z. Y. You and B. X. Yu and C. X. Yu and J. S. Yu and C. Z. Yuan and Y. Yuan and A. Yuncu and A. A. Zafar and Y. Zeng and Z. Zeng and B. X. Zhang and B. Y. Zhang and C. C. Zhang and D. H. Zhang and H. H. Zhang and H. Y. Zhang and J. Zhang and J. J. Zhang and J. L. Zhang and J. Q. Zhang and J. W. Zhang and J. Y. Zhang and J. Z. Zhang and K. Zhang and L. Zhang and S. Q. Zhang and X. Y. Zhang and Y. Zhang and Y. Zhang and Y. H. Zhang and Y. N. Zhang and Y. T. Zhang and Yu Zhang and Z. H. Zhang and Z. P. Zhang and Z. Y. Zhang and G. Zhao and J. W. Zhao and J. Y. Zhao and J. Z. Zhao and Lei Zhao and Ling Zhao and M. G. Zhao and Q. Zhao and Q. W. Zhao and S. J. Zhao and T. C. Zhao and Y. B. Zhao and Z. G. Zhao and A. Zhemchugov and B. Zheng and J. P. Zheng and W. J. Zheng and Y. H. Zheng and B. Zhong and L. Zhou and X. Zhou and X. K. Zhou and X. R. 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journal= {arXiv preprint arXiv:1703.09084},
year = {2017}
}