Observation of ψ(3686) →Ω−K+Ξ¯0 + c.c

• Published in: The journal of high energy physics Vol. 2024; no. 4; p. 13
• Main Authors: Ai, X. C., Bakina, O., Balossino, I., Ban, Y., Berlowski, M., Boyko, I., Cai, H., Chang, J. F., Chen, G., Chen, T., Chen, X. R., Chu, X., Dai, J. P., Ding, B., Du, S. X., Gao, Yang, Ge, Z. W., Gong, L., Guo, A. Q., Han, K. L., Hou, Z. L., Hu, H. M., Hu, J. F., Hussain, T., Janchiv, S., Jia, X. Q., Jiang, P. C., Johansson, T., Khoukaz, A., Lavezzi, L., Li, Cheng, Li, H. N., Li, J. S., Li, W. D., Liang, H., Lin, D. X., Lin, T., Liu, H., Liu, Huanhuan, Liu, J. B., Liu, Z. A., Lu, H. J., Lu, J. G., Lu, Y., Ma, H. L., Ma, Q. M., Maas, F. E., Maggiora, M., Meng, Z. X., Nefedov, Y., Ning, Z., Niu, Y., Olsen, S. L., Ouyang, Q., Pelizaeus, M., Peng, H. P., Qi, H., Redmer, C. F., Ren, K. J., Salone, N., Shan, K. Y., Shi, B. A., Shi, H. C., Shi, S. Y., Song, Y. J., Song, Y. X., Sun, G. B., Sun, G. X., Wang, B., Wang, B. L., Wang, J. P., Wang, X., Wang, Z., Wang, Z. L., Wu, J. F., Wu, X., Wu, X. H., Xian, X. M., Xiang, T., Xiao, Y. L., Xu, Q. J., Yang, Z. W., Zeng, S. H., Zeng, Y., Zeng, Y. J., Zhai, X. Y., Zhang, D. H., Zhang, G. Y., Zhang, H. Q., Zhang, J. W., Zhang, Jianyu, Zhang, R. Y., Zhang, Shuihan, Zhang, Z. L., Zhang, Z. Y., Zhao, Ling, Zhao, R. P., Zhu, K., Zhu, W. D., Zhu, Y. C.
• Format: Journal Article
• Language: English
• Published: Berlin/Heidelberg Springer Berlin Heidelberg 03.04.2024; Springer Nature B.V
• Subjects: Candidates; Classical and Quantum Gravitation; Collaboration; Decay; Efficiency; Elementary Particles; Energy; Monte Carlo simulation; Physics; Physics and Astronomy; Quantum Field Theories; Quantum Field Theory; Quantum Physics; Quarks; Radiation; Regular Article - Experimental Physics; Relativity Theory; Sensors; String Theory; QCD; Branching fraction; -; Experiments; Quarkonium
• ISSN: 1029-8479
• DOI: 10.1007/JHEP04(2024)013

A bstract Using (27 . 12 ± 0 . 14) × 10 8 ψ (3686) events collected with the BESIII detector at BEPCII, the decay of ψ (3686) → Ω − K + Ξ ¯ 0 + c . c . is observed for the first time. The branching fraction of this decay is measured to be B ψ 3686 → Ω − K + Ξ ¯ 0 + c . c . = (2 . 78 ± 0 . 40 ± 0 . 18) × 10 − 6 , where the first uncertainty is statistical and the second is systematic. Possible baryon excited states are searched for in this decay, but no evident intermediate state is observed with the current sample size.