Study of the processes χcJ→ Ξ−Ξ¯+ and Ξ0Ξ¯0

A bstract Using 448 . 1 × 10 6 ψ (3686) decays collected with the BESIII detector at the BEPCII e + e − storage rings, the branching fractions and angular distributions of the decays χ cJ → Ξ − Ξ ¯ + and Ξ 0 Ξ ¯ 0 ( J = 0 , 1 , 2) are measured based on a partial-reconstruction technique. The decays...

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Veröffentlicht in:	The journal of high energy physics 2022-06, Vol.2022 (6), p.74
Hauptverfasser:	Bai, X.H., Ban, Y., Boyko, I., Cai, X., Cetin, S.A., Chang, J.F., Chen, H.S., Dedovich, D., Denig, A., Ding, Y., Dong, M.Y., Du, S.X., Fang, J., Fang, Y., Felici, G., Feng, J.H., Gao, Y., Gersabeck, E.M., Goetzen, K., Gong, L., Guo, A.Q., Han, W.Y., Harris, F.A., Heng, Y.K., Herold, C., Hu, H.M., Hu, J.F., Huang, L.Q., Hussain, T., Jaeger, S., Ke, B.C., Khoukaz, A., Kopf, B., Kuessner, M., Kurth, M.G., Lane, J.J., Lavania, A., Leithoff, H., Li, F., Li, H.B., Li, W.G., Libby, J., Liu, J.Y., Liu, P.L., Liu, W.M., Liu, Y.B., Luo, P.W., Mao, Z.P., Muramatsu, H., Nefedov, Y., Nerling, F., Nisar, S., Pan, X., Peters, K., Ping, R.G., Pogodin, S., Qi, M., Rolo, M., Shan, X.Y., Shi, X., Song, J.J., Song, Y.X., Sosio, S., Sun, Y.Z., Tan, Y.X., Tang, G.Y., Wang, C.W., Wang, M., Wang, Meng, Wang, S., Wang, X.F., Wang, Z.Y., Wilkinson, G., Wollenberg, L., Xie, Y.H., Xu, C.J., Xu, G.F., Ye, M.H., Yu, C.X., Yue, C.X., Zeng, X., Zhang, A.Q., Zhang, B.X., Zhang, J.J., Zhang, J.L., Zhang, J.Z., Zhang, Shulei, Zhang, Y.T., Zhang, Yao, Zhang, Z.Y., Zhao, Y.X., Zhao, Z.G., Zheng, B., Zhong, B., Zhou, X., Zhou, X.Y., Zhu, W.J., Zhu, Z.A., Zou, B.S., Zou, J.H.
Format:	Artikel
Sprache:	eng
Schlagworte:	Classical and Quantum Gravitation Collaboration Decay Elementary Particles High energy physics Monte Carlo simulation Physics Physics and Astronomy Quantum Field Theories Quantum Field Theory Quantum Physics Quarks Radiation Regular Article - Experimental Physics Relativity Theory Sensors Storage rings (particle accelerators) String Theory
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Beschreibung
Zusammenfassung:	A bstract Using 448 . 1 × 10 6 ψ (3686) decays collected with the BESIII detector at the BEPCII e + e − storage rings, the branching fractions and angular distributions of the decays χ cJ → Ξ − Ξ ¯ + and Ξ 0 Ξ ¯ 0 ( J = 0 , 1 , 2) are measured based on a partial-reconstruction technique. The decays χ c 1 → Ξ 0 Ξ ¯ 0 and χ c 2 → Ξ 0 Ξ ¯ 0 are observed for the first time with statistical significances of 7 σ and 15 σ , respectively. The results of this analysis are in good agreement with previous measurements and have significantly improved precision.
ISSN:	1029-8479
DOI:	10.1007/JHEP06(2022)074