单标记双光子相互作用中产生 $X(3872)\rightarrow J/\psi \pi^+\pi^-$ 的证据
高能物理 - 实验
2021-03-31 v2
摘要
我们报告了 在双光子相互作用中产生的首个证据，通过标记末态中的电子或正电子，探索高虚光子区域。该搜索在 中进行，使用了 Belle 探测器在 KEKB 对撞机上收集的 825 fb 数据。我们观测到三个 候选事例，预期背景为 个事件，显著性为 3.2。在由 介子模型预测的 依赖关系假设下，我们获得了 ）的估计值，其中 为虚光子的不变质量平方。未发现 候选事例。
引用
@article{arxiv.2007.05696,
title = {Evidence for $X(3872)\rightarrow J/\psi \pi^+\pi^-$ produced in single-tag two-photon interactions},
author = {Belle Collaboration and Y. Teramoto and S. Uehara and M. Masuda and I. Adachi and H. Aihara and S. Al Said and D. M. Asner and H. Atmacan and T. Aushev and R. Ayad and V. Babu and P. Behera and C. Beleño and J. Bennett and V. Bhardwaj and B. Bhuyan and T. Bilka and J. Biswal and G. Bonvicini and A. Bozek and M. Bračko and T. E. Browder and M. Campajola and D. Červenkov and M. -C. Chang and P. Chang and V. Chekelian and A. Chen and B. G. Cheon and K. Chilikin and K. Cho and S. -J. Cho and S. -K. Choi and Y. Choi and S. Choudhury and D. Cinabro and S. Cunliffe and G. De Nardo and F. Di Capua and Z. Doležal and T. V. Dong and S. Eidelman and T. Ferber and B. G. Fulsom and R. Garg and V. Gaur and N. Gabyshev and A. Garmash and A. Giri and P. Goldenzweig and D. Greenwald and C. Hadjivasiliou and T. Hara and O. Hartbrich and K. Hayasaka and H. Hayashii and M. T. Hedges and M. Hernandez Villanueva and W. -S. Hou and C. -L. Hsu and T. Iijima and K. Inami and G. Inguglia and A. Ishikawa and R. Itoh and M. Iwasaki and Y. Iwasaki and W. W. Jacobs and E. -J. Jang and S. Jia and Y. Jin and C. W. Joo and K. K. Joo and J. Kahn and A. B. Kaliyar and K. H. Kang and G. Karyan and Y. Kato and T. Kawasaki and H. Kichimi and C. Kiesling and B. H. Kim and D. Y. Kim and S. H. Kim and Y. -K. Kim and T. D. Kimmel and K. Kinoshita and P. Kodyš and S. Korpar and D. Kotchetkov and P. Križan and R. Kroeger and P. Krokovny and T. Kuhr and R. Kulasiri and R. Kumar and K. Kumara and A. Kuzmin and Y. -J. Kwon and K. Lalwani and J. S. Lange and I. S. Lee and S. C. Lee and P. Lewis and L. K. Li and Y. B. Li and L. Li Gioi and J. Libby and K. Lieret and Z. Liptak and D. Liventsev and T. Luo and C. MacQueen and T. Matsuda and D. Matvienko and M. Merola and K. Miyabayashi and H. Miyata and G. B. Mohanty and S. Mohanty and T. J. Moon and T. Mori and M. Mrvar and R. Mussa and E. Nakano and M. Nakao and H. Nakazawa and Z. Natkaniec and A. Natochii and M. Nayak and N. K. Nisar and S. Nishida and K. Ogawa and S. Ogawa and H. Ono and Y. Onuki and P. Pakhlov and G. Pakhlova and S. Pardi and H. Park and S. -H. Park and S. Patra and S. Paul and T. K. Pedlar and R. Pestotnik and L. E. Piilonen and T. Podobnik and V. Popov and E. Prencipe and M. T. Prim and M. Ritter and A. Rostomyan and N. Rout and G. Russo and D. Sahoo and Y. Sakai and S. Sandilya and A. Sangal and L. Santelj and T. Sanuki and V. Savinov and G. Schnell and J. Schueler and C. Schwanda and Y. Seino and K. Senyo and M. E. Sevior and M. Shapkin and V. Shebalin and J. -G. Shiu and J. B. Singh and E. Solovieva and M. Starič and Z. S. Stottler and M. Sumihama and K. Sumisawa and T. Sumiyoshi and W. Sutcliffe and M. Takizawa and U. Tamponi and F. Tenchini and M. Uchida and T. Uglov and Y. Unno and S. Uno and P. Urquijo and Y. Usov and R. Van Tonder and G. Varner and A. Vinokurova and V. Vorobyev and E. Waheed and C. H. Wang and E. Wang and M. -Z. Wang and P. Wang and X. L. Wang and M. Watanabe and E. Won and X. Xu and B. D. Yabsley and S. B. Yang and H. Ye and J. Yelton and J. H. Yin and Z. P. Zhang and V. Zhilich and V. Zhukova and V. Zhulanov},
journal= {arXiv preprint arXiv:2007.05696},
year = {2021}
}
备注
To be published in Physical Review Letters