Evidence for Two Excited  Ω−  Hyperons

Name: Evidence for Two Excited Ω − Hyperons
Keywords: Subatomär fysik, High Energy Physics - Experiment (hep-ex), High Energy Physics - Phenomenology (hep-ph), Subatomic Physics, FOS: Physical sciences

Ablikim, M.; Achasov, M. N.; Adlarson, P.; Afedulidis, O.; Ai, X. C.; Aliberti, R.; Amoroso, A.; 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.; Chai, X. Y.; Chang, J. F.; Che, G. R.; Che, Y. Z.; 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.; Dong, J.; Dong, L. Y.; Dong, M. Y.; Dong, X.; Du, M. C.; Du, S. X.; Duan, Y. Y.; Duan, Z. H.; Egorov, P.; Fan, Y. H.; Fang, J.; Fang, S. S.; Fang, W. X.; Fang, Y.; Fang, Y. Q.; Farinelli, R.; Fava, L.; Feldbauer, F.; Felici, G.; Feng, C. Q.; Feng, J. H.; Feng, Y. T.; Fritsch, M.; Fu, C. D.; Fu, J. L.; Fu, Y. W.; Gao, H.; Gao, X. B.; Gao, Y. N.; Gao, Yang; Garbolino, S.; Garzia, I.; Ge, L.; Ge, P. T.; Ge, Z. W.; Geng, C.; Gersabeck, E. M.; Gilman, A.; Goetzen, K.; Gong, L.; Gong, W. X.; Gradl, W.; Gramigna, S.; Greco, M.; Gu, M. H.; Gu, Y. T.; Guan, C. Y.; Guo, A. Q.; Guo, L. B.; Guo, M. J.; Guo, R. P.; Guo, Y. P.; Guskov, A.; Gutierrez, J.; Han, K. L.; Han, T. T.; Hanisch, F.; Hao, X. Q.; Harris, F. A.; He, K. K.; He, K. L.; Heinsius, F. H.; Heinz, C. H.; Heng, Y. K.; Herold, C.; Holtmann, T.; Hong, P. C.; Hou, G. Y.; Hou, X. T.; Hou, Y. R.; Hou, Z. L.; Hu, B. Y.; Hu, H. M.; Hu, J. F.; Hu, Q. P.; Hu, S. L.; Hu, T.; Hu, Y.; Huang, G. S.; Huang, K. X.; Huang, L. Q.; Huang, X. T.; Huang, Y. P.; Huang, Y. S.; Hussain, T.; Hölzken, F.; Hüsken, N.; in der Wiesche, N.; Jackson, J.; Janchiv, S.; Jeong, J. H.; Ji, Q.; Ji, Q. P.; Ji, W.; Ji, X. B.; Ji, X. L.; Ji, Y. Y.; Jia, X. Q.; Jia, Z. K.; Jiang, D.; Jiang, H. B.; Jiang, P. C.; Jiang, S. S.; Jiang, T. J.; Jiang, X. S.; Jiang, Y.; Jiao, J. B.; Jiao, J. K.; Jiao, Z.; Jin, S.; Jin, Y.; Jing, M. Q.; Jing, X. M.; Johansson, T.; Kabana, S.; Kalantar-Nayestanaki, N.; Kang, X. L.; Kang, X. S.; Kavatsyuk, M.; Ke, B. C.; Khachatryan, V.; Khoukaz, A.; Kiuchi, R.; Kolcu, O. B.; Kopf, B.; Kuessner, M.; Kui, X.; Kumar, N.

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Evidence for Two Excited Ω− Hyperons

descriptionPublicationkeyboard_double_arrow_right Article 04 Apr 2025Embargo end date: 01 Jan 2024 English Publisher:American Physical Society (APS)Journal:Physical Review Letters, volume 134 (issn: 0031-9007, eissn: 1079-7114,

Copyright policy )Funded by:DFG | unidentified, unidentified, DFG | Strong and Weak Interacti... +1 projects

Authors: Ablikim, M.; Achasov, M. N.; Adlarson, P.; Afedulidis, O.; Ai, X. C.; Aliberti, R.; Amoroso, A.; +193 Authors

Ablikim, M.; Achasov, M. N.; Adlarson, P.; Afedulidis, O.; Ai, X. C.; Aliberti, R.; Amoroso, A.; 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.; Chai, X. Y.; Chang, J. F.; Che, G. R.; Che, Y. Z.; 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. H.; Egorov, P.; Fan, Y. H.; Fang, J.; Fang, J.; Fang, S. S.; Fang, W. X.; Fang, Y.; Fang, Y. Q.; Farinelli, R.; Fava, L.; Feldbauer, F.; Felici, G.; Feng, C. Q.; Feng, J. H.; Feng, Y. T.; Fritsch, M.; Fu, C. D.; Fu, J. L.; Fu, Y. W.; Gao, H.; Gao, X. B.; Gao, Y. N.; Gao, Yang; Garbolino, S.; Garzia, I.; Ge, L.; Ge, P. T.; Ge, Z. W.; Geng, C.; Gersabeck, E. M.; Gilman, A.; Goetzen, K.; Gong, L.; Gong, W. X.; Gradl, W.; Gramigna, S.; Greco, M.; Gu, M. H.; Gu, Y. T.; Guan, C. Y.; Guo, A. Q.; Guo, L. B.; Guo, M. J.; Guo, R. P.; Guo, Y. P.; Guskov, A.; Gutierrez, J.; Han, K. L.; Han, T. T.; Hanisch, F.; Hao, X. Q.; Harris, F. A.; He, K. K.; He, K. L.; Heinsius, F. H.; Heinz, C. H.; Heng, Y. K.; Herold, C.; Holtmann, T.; Hong, P. C.; Hou, G. Y.; Hou, X. T.; Hou, Y. R.; Hou, Z. L.; Hu, B. Y.; Hu, H. M.; Hu, J. F.; Hu, Q. P.; Hu, S. L.; Hu, T.; Hu, Y.; Huang, G. S.; Huang, K. X.; Huang, L. Q.; Huang, X. T.; Huang, Y. P.; Huang, Y. S.; Hussain, T.; Hölzken, F.; Hüsken, N.; in der Wiesche, N.; Jackson, J.; Janchiv, S.; Jeong, J. H.; Ji, Q.; Ji, Q. P.; Ji, W.; Ji, X. B.; Ji, X. L.; Ji, Y. Y.; Jia, X. Q.; Jia, Z. K.; Jiang, D.; Jiang, H. B.; Jiang, P. C.; Jiang, S. S.; Jiang, T. J.; Jiang, X. S.; Jiang, Y.; Jiao, J. B.; Jiao, J. K.; Jiao, Z.; Jin, S.; Jin, Y.; Jing, M. Q.; Jing, X. M.; Johansson, T.; Kabana, S.; Kalantar-Nayestanaki, N.; Kang, X. L.; Kang, X. S.; Kavatsyuk, M.; Ke, B. C.; Khachatryan, V.; Khoukaz, A.; Kiuchi, R.; Kolcu, O. B.; Kopf, B.; Kuessner, M.; Kui, X.; Kumar, N.;

doi: 10.1103/physrevlett.134.131903 , 10.48550/arxiv.2411.11648

pmid: 40250399

handle: 11370/f0245008-30be-4e35-bd1d-62595c24ab91 , 11392/2600412

Evidence for Two Excited Ω− Hyperons

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Abstract

Using e+e− collision data corresponding to an integrated luminosity of 19 fb−1 collected by the BESIII detector at center-of-mass energies ranging from 4.13 to 4.70 GeV, we report the first evidence for a new excited Ω− hyperon, the Ω(2109)−, through the process e+e−→Ω(2109)−Ω¯++c. c. with a significance of 4.1σ. The mass and width of Ω(2109)− are measured to be 2108.5±5.2stat±0.9syst MeV/c2 and 18.3±16.4stat±5.7syst MeV, respectively. We also present evidence for a new production mechanism for the previously identified Ω(2012)− via the process e+e−→Ω(2012)−Ω¯++c. c. with a significance of 3.5σ.

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Keywords

Subatomär fysik, High Energy Physics - Experiment (hep-ex), High Energy Physics - Phenomenology (hep-ph), Subatomic Physics, FOS: Physical sciences

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