在 $e^+ e^- \rightarrow J/\psi D \bar{D}$ 中观测到备选的 $\chi_{c0}(2P)$ 候选态
高能物理 - 实验
2017-06-20 v3
摘要
我们对 过程进行了完整振幅分析，其中 指 或 。观测到一个衰变为 的新类粲偶素态 ，其显著性为 。其质量为 () MeV/，宽度为 () MeV。 假设优于 假设，水平为 。该分析基于 Belle 探测器在非对称能量 对撞机 KEKB 上收集的 980 数据样本。
引用
@article{arxiv.1704.01872,
title = {Observation of an alternative $\chi_{c0}(2P)$ candidate in $e^+ e^- \rightarrow J/\psi D \bar{D}$},
author = {Belle Collaboration and K. Chilikin and I. Adachi and H. Aihara and S. Al Said and D. M. Asner and V. Aulchenko and R. Ayad and V. Babu and I. Badhrees and A. M. Bakich and V. Bansal and E. Barberio and D. Besson and V. Bhardwaj and B. Bhuyan and J. Biswal and A. Bobrov and A. Bondar and A. Bozek and M. Bračko and T. E. Browder and D. Červenkov and V. Chekelian and A. Chen and B. G. Cheon and K. Cho and Y. Choi and D. Cinabro and N. Dash and S. Di Carlo and Z. Doležal and Z. Drásal and D. Dutta and S. Eidelman and H. Farhat and J. E. Fast and T. Ferber and B. G. Fulsom and V. Gaur and N. Gabyshev and A. Garmash and R. Gillard and P. Goldenzweig and J. Haba and T. Hara and K. Hayasaka and W. -S. Hou and K. Inami and A. Ishikawa and R. Itoh and Y. Iwasaki and W. W. Jacobs and I. Jaegle and H. B. Jeon and Y. Jin and D. Joffe and K. K. Joo and T. Julius and K. H. Kang and G. Karyan and P. Katrenko and D. Y. Kim and H. J. Kim and J. B. Kim and K. T. Kim and M. J. Kim and S. H. Kim and Y. J. Kim and K. Kinoshita and P. Kodyš and S. Korpar and D. Kotchetkov and P. Križan and P. Krokovny and T. Kuhr and R. Kulasiri and A. Kuzmin and Y. -J. Kwon and J. S. Lange and L. Li and L. Li Gioi and J. Libby and D. Liventsev and M. Lubej and T. Luo and M. Masuda and T. Matsuda and D. Matvienko and K. Miyabayashi and H. Miyata and R. Mizuk and G. B. Mohanty and H. K. Moon and T. Mori and R. Mussa and E. Nakano and M. Nakao and T. Nanut and K. J. Nath and Z. Natkaniec and M. Nayak and M. Niiyama and N. K. Nisar and S. Nishida and S. Ogawa and S. Okuno and S. L. Olsen and H. Ono and P. Pakhlov and G. Pakhlova and B. Pal and S. Pardi and H. Park and S. Paul and R. Pestotnik and L. E. Piilonen and C. Pulvermacher and M. Ritter and H. Sahoo and Y. Sakai and M. Salehi and S. Sandilya and L. Santelj and T. Sanuki and O. Schneider and G. Schnell and C. Schwanda and Y. Seino and K. Senyo and O. Seon and M. E. Sevior and V. Shebalin and C. P. Shen and T. -A. Shibata and J. -G. Shiu and A. Sokolov and E. Solovieva and M. Starič and T. Sumiyoshi and M. Takizawa and U. Tamponi and K. Tanida and F. Tenchini and K. Trabelsi and M. Uchida and S. Uehara and T. Uglov and S. Uno and Y. Usov and C. Van Hulse and G. Varner and A. Vinokurova and A. Vossen and C. H. Wang and M. -Z. Wang and P. Wang and M. Watanabe and Y. Watanabe and E. Widmann and E. Won and H. Yamamoto and Y. Yamashita and H. Ye and C. Z. Yuan and Y. Yusa and Z. P. Zhang and V. Zhilich and V. Zhulanov and A. Zupanc},
journal= {arXiv preprint arXiv:1704.01872},
year = {2017}
}
备注
17 pages, 11 figures