Observation of χ c 0 → Σ + Σ ¯ − η and evidence for χ c 1 , 2 → Σ + Σ ¯ − η

Ablikim, M.; Achasov, M. N.; Adlarson, P.; Afedulidis, O.; Ai, X. C.; Aliberti, R.; Amoroso, A.; An, Q.; Bai, Y.; Bakina, O.; Balossino, I.; Ban, Y.; Bao, H. -R.; Batozskaya, V.; Begzsuren, K.; Berger, N.; Berlowski, M.; Bertani, M.; Bettoni, D.; Bianchi, F.; Bianco, E.; Bortone, A.; Boyko, I.; Briere, R. A.; Brueggemann, A.; Cai, H.; Cai, X.; Calcaterra, A.; Cao, G. F.; Cao, N.; Cetin, S. A.; Chang, J. F.; Che, G. R.; Chelkov, G.; Chen, C.; Chen, C. H.; Chen, Chao; Chen, G.; Chen, H. S.; Chen, H. Y.; Chen, M. L.; Chen, S. J.; Chen, S. L.; Chen, S. M.; Chen, T.; Chen, X. R.; Chen, X. T.; Chen, Y. B.; Chen, Y. Q.; Chen, Z. J.; Chen, Z. Y.; Choi, S. K.; Cibinetto, G.; Cossio, F.; Cui, J. J.; Dai, H. L.; Dai, J. P.; Dbeyssi, A.; de Boer, R. E.; Dedovich, D.; Deng, C. Q.; Deng, Z. Y.; Denig, A.; Denysenko, I.; Destefanis, M.; De Mori, F.; Ding, B.; Ding, X. X.; Ding, Y.; Ding, Y.; Dong, J.; Dong, L. Y.; Dong, M. Y.; Dong, X.; Du, M. C.; Du, S. X.; Duan, Y. Y.; Duan, Z. 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doi:10.1103/PhysRevD.110.112013

Observation of $χ_{c 0} \to Σ^{+} {\bar{Σ}}^{-} η$ and evidence for $χ_{c 1, 2} \to Σ^{+} {\bar{Σ}}^{-} η$

Journal Article · Sun Dec 15 23:00:00 EST 2024 · Physical Review. D.

DOI:https://doi.org/10.1103/PhysRevD.110.112013· OSTI ID:2481627

Ablikim, M.; Achasov, M. N.; Adlarson, P.; Afedulidis, O.; Ai, X. C.; Aliberti, R.; Amoroso, A.; An, Q.; Bai, Y.; Bakina, O.; Balossino, I.; Ban, Y.; Bao, H. -R.; Batozskaya, V.; Begzsuren, K.; Berger, N.; Berlowski, M.; Bertani, M.; Bettoni, D.; Bianchi, F. more »

Using $(27.12 \pm 0.14) \times 10^{8}$ $ψ (3686)$ events collected with the BESIII detector, the decay $χ_{c 0} \to Σ^{+} {\bar{Σ}}^{-} η$ is observed for the first time with a signal significance of $7.0 σ$ , and evidence for $χ_{c 1} \to Σ^{+} {\bar{Σ}}^{-} η$ and $χ_{c 2} \to Σ^{+} {\bar{Σ}}^{-} η$ is found with signal significances of $4.3 σ$ and $4.6 σ$ , respectively. The branching fractions are determined to be $B (χ_{c 0} \to Σ^{+} {\bar{Σ}}^{-} η) = (1.26 \pm 0.20 \pm 0.13) \times 10^{- 4}$ , $B (χ_{c 1} \to Σ^{+} {\bar{Σ}}^{-} η) = (5.10 \pm 1.21 \pm 0.67) \times 10^{- 5}$ , and $B (χ_{c 2} \to Σ^{+} {\bar{Σ}}^{-} η) = (5.46 \pm 1.18 \pm 0.50) \times 10^{- 5}$ , where the first uncertainties are statistical, and the second ones are systematic.

Published by the American Physical Society 2024

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Sponsoring Organization:: USDOE

Grant/Contract Number:: FG02-05ER41374

OSTI ID:: 2481627

Journal Information:: Physical Review. D., Journal Name: Physical Review. D. Journal Issue: 11 Vol. 110; ISSN PRVDAQ; ISSN 2470-0010

Publisher:: American Physical SocietyCopyright Statement

Country of Publication:: United States

Language:: English

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Observation of $χ_{c 0} \to Σ^{+} {\bar{Σ}}^{-} η$ and evidence for $χ_{c 1, 2} \to Σ^{+} {\bar{Σ}}^{-} η$