Measurements of the branching fractions of $χ_{cJ}\to 2K^+ 2K^- ω$ and $ϕK^+ K^- ω$ decays

arXiv (Cornell University) 2026 Preprint Open access

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Authors: BESIII Collaboration, M. Ablikim, M. N. Achasov, P Adlarson, X. C. Ai, R. Aliberti, A. Amoroso, Qinchen An, Y. X. Bai, Olga Bakina, Y. Ban, H. -R. Bao
+88 more X. L. Bao, V. Batozskaya, K. Begzsuren, N. Berger, Marcin Berlowski, M. B. Bertani, D. Bettoni, F. Bianchi, E. Bianco, A. Bortone, I. Boyko, R. A. Briere, A. Brueggemann, H. Cai, M. H. Cai, X. Cai, A. Calcaterra, G. F. Cao, N. Cao, S. A. Cetin, X. Y. Chai, J. F. Chang, T. T. Chang, G. R. Che, Y. Z. Che, C. H. Chen, Chao Chen, G. H. Chen, H. Y. Chen, H. Y. Chen, M. L. Chen, S. J. Chen, S. J. Chen, T. Chen, W. Chen, X. R. Chen, X. R. Chen, X. R. Chen, Y. Q. Chen, Y. Q. Chen, Z. K. Chen, J. Cheng, L. N. Cheng, S. K. Choi, X. Chu, G. Cibinetto, F. Cossio, J. Cottee-Meldrum, H. L. Dai, J. P. Dai, X. C. Dai, A. Dbeyssi, R. E. de Boer, D. Dedovich, C. Q. Deng, Z. Y. Deng, A. Denig, I. Denisenko, Marco Giovanni Maria Destefanis, F. De Mori, X. X. Ding, Y. X. Ding, Y. X. Ding, J. Dong, L. Y. Dong, M. Y. Dong, X. Q. Dong, M. C. Du, S. X. Du, S. X. Du, X. L. Du, Y. Y. Duan, Z. H. Duan, P. Egorov, G. F. Fan, J. J. Fan, Y. H. Fan, J. Fang, J. Fang, S. S. Fang, W. X. Fang, Y. Q. Fang, L. Fava, F. Feldbauer, G. Felici, C. Q. Feng, J. H. Feng, L. Feng
DOI: 10.48550/arxiv.2601.01758
Cited by: 0

Abstract

Using a data sample of $(2712.4 \pm 14.3) \times 10^{6}$ $ψ(3686)$ events collected with the BESIII detector operating at the BEPCII collider, we report the first observation of the decays $χ_{cJ}\to 2K^+ 2K^- ω$ and $χ_{cJ}\to ϕK^{+}K^{-} ω$ ($J = 0,1,2$) via the radiative transitions $ψ(3686) \to γχ_{cJ}$. The branching fractions of these decays are measured for the first time, and the statistical significance for each signal exceeds $10σ$.

Fields of Study & Subjects

Quantum Chromodynamics and Particle Interactions Particle physics theoretical and experimental studies High-Energy Particle Collisions Research

Publication details

Journal / source
arXiv (Cornell University)
Publication date
5 January 2026
Language
EN
Document type
Preprint