首次搜寻弱辐射衰变 $\Lambda_c^+ \to \Sigma^+ \gamma$ 与 $\Xi_c^0 \to \Xi^0 \gamma$
高能物理 - 实验
2023-02-09 v3 高能物理 - 唯象学
摘要
我们利用 Belle 探测器在 KEKB 非对称能量 对撞机上收集的 980~fb 数据样本，首次搜寻弱辐射衰变 和 。未观察到明显的 或 信号。以衰变 和 为归一化通道，确定了在 90\% 可信度水平上分支比分比的上限 和 。我们得到了在 90\% 可信度水平上绝对分支分数的上限 和 。
引用
@article{arxiv.2206.12517,
title = {First search for the weak radiative decays $\Lambda_c^+ \to \Sigma^+ \gamma$ and $\Xi_c^0 \to \Xi^0 \gamma$},
author = {Belle Collaboration and Y. Li and C. P. Shen and I. Adachi and H. Aihara and D. M. Asner and V. Aulchenko and T. Aushev and V. Babu and P. Behera and K. Belous and J. Bennett and M. Bessner and V. Bhardwaj and B. Bhuyan and T. Bilka and A. Bobrov and D. Bodrov and G. Bonvicini and J. Borah and A. Bozek and M. Bračko and P. Branchini and T. E. Browder and A. Budano and M. Campajola and D. Červenkov and M. -C. Chang and P. Chang and B. G. Cheon and K. Chilikin and H. E. Cho and K. Cho and S. -J. Cho and S. -K. Choi and Y. Choi and S. Choudhury and D. Cinabro and S. Das and N. Dash and G. De Pietro and R. Dhamija and F. Di Capua and J. Dingfelder and Z. Doležal and T. V. Dong and D. Dossett and D. Epifanov and D. Ferlewicz and B. G. Fulsom and R. Garg and V. Gaur and A. Garmash and A. Giri and P. Goldenzweig and E. Graziani and T. Gu and K. Gudkova and C. Hadjivasiliou and K. Hayasaka and H. Hayashii and W. -S. Hou and C. -L. Hsu and T. Iijima and K. Inami and N. Ipsita and A. Ishikawa and R. Itoh and M. Iwasaki and W. W. Jacobs and E. -J. Jang and Q. P. Ji and S. Jia and Y. Jin and K. K. Joo and K. H. Kang and C. Kiesling and C. H. Kim and D. Y. Kim and K. -H. Kim and Y. -K. Kim and K. Kinoshita and P. Kodyš and A. Korobov and S. Korpar and E. Kovalenko and P. Križan and P. Krokovny and M. Kumar and R. Kumar and K. Kumara and Y. -J. Kwon and T. Lam and J. S. Lange and M. Laurenza and S. C. Lee and C. H. Li and J. Li and L. K. Li and Y. B. Li and L. Li Gioi and J. Libby and K. Lieret and D. Liventsev and M. Masuda and T. Matsuda and D. Matvienko and S. K. Maurya and F. Meier and M. Merola and F. Metzner and K. Miyabayashi and R. Mizuk and M. Mrvar and I. Nakamura and M. Nakao and Z. Natkaniec and A. Natochii and L. Nayak and M. Nayak and N. K. Nisar and S. Nishida and S. Ogawa and H. Ono and P. Oskin 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 E. Prencipe and M. T. Prim and N. Rout and G. Russo and S. Sandilya and A. Sangal and L. Santelj 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 C. Sharma and J. -G. Shiu and J. B. Singh and E. Solovieva and M. Starič and Z. S. Stottler and M. Sumihama and T. Sumiyoshi and M. Takizawa and U. Tamponi and K. Tanida and F. Tenchini and K. Trabelsi and T. Tsuboyama and M. Uchida and Y. Unno and S. Uno and R. van Tonder and G. Varner and K. E. Varvell and A. Vinokurova and E. Waheed and E. Wang and M. -Z. Wang and M. Watanabe and S. Watanuki and O. Werbycka and E. Won and B. D. Yabsley and W. Yan and S. B. Yang and J. Yelton and J. H. Yin and C. Z. Yuan and Y. Yusa and Y. Zhai and Z. P. Zhang and V. Zhilich and V. Zhukova},
journal= {arXiv preprint arXiv:2206.12517},
year = {2023}
}
备注
10 pages, 6 pages; accepted for publication as a Regular Article in Physical Review D