Model-Independent Determination of the Spin of the Ω − and Its Polarization Alignment in ψ ( 3686 ) → Ω − Ω ¯ +

Ablikim, M.; Achasov, M. N.; Adlarson, P.; Ahmed, S.; Albrecht, M.; Amoroso, A.; An, Q.; Anita,; Bai, Y.; Bakina, O.; Baldini Ferroli, R.; Balossino, I.; Ban, Y.; Begzsuren, K.; Bennett, J. V.; Berger, N.; Bertani, M.; Bettoni, D.; Bianchi, F.; Biernat, J.; Bloms, J.; Bortone, A.; Boyko, I.; Briere, R. A.; Cai, H.; Cai, X.; Calcaterra, A.; Cao, G. F.; Cao, N.; Cetin, S. A.; Chang, J. F.; Chang, W. L.; Chelkov, G.; Chen, D. Y.; Chen, G.; Chen, H. S.; Chen, M. L.; Chen, S. J.; Chen, X. R.; Chen, Y. B.; Cheng, W. S.; Cibinetto, G.; Cossio, F.; Cui, X. F.; Dai, H. L.; Dai, J. P.; Dai, X. C.; Dbeyssi, A.; de Boer, R. B.; Dedovich, D.; Deng, Z. Y.; Denig, A.; Denysenko, I.; Destefanis, M.; De Mori, F.; Ding, Y.; Dong, C.; Dong, J.; Dong, L. Y.; Dong, M. Y.; Du, S. X.; Fang, J.; Fang, S. S.; Fang, Y.; Farinelli, R.; Fava, L.; Feldbauer, F.; Felici, G.; Feng, C. Q.; Fritsch, M.; Fu, C. D.; Fu, Y.; Gao, X. L.; Gao, Y.; Gao, Y.; Gao, Y. G.; Garzia, I.; Gersabeck, E. M.; Gilman, A.; Goetzen, K.; Gong, L.; Gong, W. X.; Gradl, W.; Greco, M.; Gu, L. M.; Gu, M. H.; Gu, S.; Gu, Y. T.; Guan, C. Y.; Guo, A. Q.; Guo, L. B.; Guo, R. P.; Guo, Y. P.; Guo, Y. P.; Guskov, A.; Han, S.; Han, T. T.; Han, T. Z.; Hao, X. Q.; Harris, F. A.; He, K. L.; Heinsius, F. H.; Held, T.; Heng, Y. K.; Himmelreich, M.; Holtmann, T.; Hou, Y. R.; Hou, Z. L.; Hu, H. M.; Hu, J. F.; Hu, T.; Hu, Y.; Huang, G. S.; Huang, L. Q.; Huang, X. T.; Huang, Z.; Huesken, N.; Hussain, T.; Ikegami Andersson, W.; Imoehl, W.; Irshad, M.; Jaeger, S.; Janchiv, S.; Ji, Q.; Ji, Q. P.; Ji, X. B.; Ji, X. L.; Jiang, H. B.; Jiang, X. S.; Jiang, X. Y.; Jiao, J. B.; Jiao, Z.; Jin, S.; Jin, Y.; Johansson, T.; Kalantar-Nayestanaki, N.; Kang, X. S.; Kappert, R.; Kavatsyuk, M.; Ke, B. C.; Keshk, I. K.; Khoukaz, A.; Kiese, P.; Kiuchi, R.; Kliemt, R.; Koch, L.; Kolcu, O. B.; Kopf, B.; Kuemmel, M.; Kuessner, M.; Kupsc, A.; Kurth, M. G.; Kühn, W.; Lane, J. J.; Lange, J. S.; Larin, P.; Lavezzi, L.; Leithoff, H.; Lellmann, M.; Lenz, T.; Li, C.; Li, C. H.; Li, Cheng; Li, D. M.; Li, F.; Li, G.; Li, H. B.; Li, H. J.; Li, J. L.; Li, J. Q.; Li, Ke; Li, L. K.; Li, Lei; Li, P. L.; Li, P. R.; Li, S. Y.; Li, W. D.; Li, W. G.; Li, X. H.; Li, X. L.; Li, Z. B.; Li, Z. Y.; Liang, H.; Liang, H.; Liang, Y. F.; Liang, Y. T.; Liao, L. Z.; Libby, J.; Lin, C. X.; Liu, B.; Liu, B. J.; Liu, C. X.; Liu, D.; Liu, D. Y.; Liu, F. H.; Liu, Fang; Liu, Feng; Liu, H. B.; Liu, H. M.; Liu, Huanhuan; Liu, Huihui; Liu, J. B.; Liu, J. Y.; Liu, K.; Liu, K. Y.; Liu, Ke; Liu, L.; Liu, Q.; Liu, S. B.; Liu, Shuai; Liu, T.; Liu, X.; Liu, Y. B.; Liu, Z. A.; Liu, Z. Q.; Long, Y. F.; Lou, X. C.; Lu, F. X.; Lu, H. J.; Lu, J. D.; Lu, J. G.; Lu, X. L.; Lu, Y.; Lu, Y. P.; Luo, C. L.; Luo, M. X.; Luo, P. W.; Luo, T.; Luo, X. L.; Lusso, S.; Lyu, X. R.; Ma, F. C.; Ma, H. L.; Ma, L. L.; Ma, M. M.; Ma, Q. M.; Ma, R. Q.; Ma, R. T.; Ma, X. N.; Ma, X. X.; Ma, X. Y.; Ma, Y. M.; Maas, F. E.; Maggiora, M.; Maldaner, S.; Malde, S.; Malik, Q. A.; Mangoni, A.; Mao, Y. J.; Mao, Z. P.; Marcello, S.; Meng, Z. X.; Messchendorp, J. G.; Mezzadri, G.; Min, T. J.; Mitchell, R. E.; Mo, X. H.; Mo, Y. J.; Muchnoi, N. Yu.; Muramatsu, H.; Nakhoul, S.; Nefedov, Y.; Nerling, F.; Nikolaev, I. B.; Ning, Z.; Nisar, S.; Olsen, S. L.; Ouyang, Q.; Pacetti, S.; Pan, X.; Pan, Y.; Pathak, A.; Patteri, P.; Pelizaeus, M.; Peng, H. P.; Peters, K.; Pettersson, J.; Ping, J. L.; Ping, R. G.; Pitka, A.; Poling, R.; Prasad, V.; Qi, H.; Qi, H. R.; Qi, M.; Qi, T. Y.; Qian, S.; Qian, W. -B.; Qian, Z.; Qiao, C. F.; Qin, L. Q.; Qin, X. P.; Qin, X. S.; Qin, Z. H.; Qiu, J. F.; Qu, S. Q.; Rashid, K. H.; Ravindran, K.; Redmer, C. F.; Rivetti, A.; Rodin, V.; Rolo, M.; Rong, G.; Rosner, Ch.; Rump, M.; Sarantsev, A.; Schelhaas, Y.; Schnier, C.; Schoenning, K.; Shan, D. C.; Shan, W.; Shan, X. Y.; Shao, M.; Shen, C. P.; Shen, P. X.; Shen, X. Y.; Shi, H. C.; Shi, R. S.; Shi, X.; Shi, X. D.; Song, J. J.; Song, Q. Q.; Song, W. M.; Song, Y. X.; Sosio, S.; Spataro, S.; Sui, F. F.; Sun, G. X.; Sun, J. F.; Sun, L.; Sun, S. S.; Sun, T.; Sun, W. Y.; Sun, Y. J.; Sun, Y. K.; Sun, Y. Z.; Sun, Z. T.; Tan, Y. H.; Tan, Y. X.; Tang, C. J.; Tang, G. Y.; Tang, J.; Thoren, V.; Tsednee, B.; Uman, I.; Wang, B.; Wang, B. L.; Wang, C. W.; Wang, D. Y.; Wang, H. P.; Wang, K.; Wang, L. L.; Wang, M.; Wang, M. Z.; Wang, Meng; Wang, W. H.; Wang, W. P.; Wang, X.; Wang, X. F.; Wang, X. L.; Wang, Y.; Wang, Y.; Wang, Y. D.; Wang, Y. F.; Wang, Y. Q.; Wang, Z.; Wang, Z. Y.; Wang, Ziyi; Wang, Zongyuan; Wei, D. H.; Weidenkaff, P.; Weidner, F.; Wen, S. P.; White, D. J.; Wiedner, U.; Wilkinson, G.; Wolke, M.; Wollenberg, L.; Wu, J. F.; Wu, L. H.; Wu, L. J.; Wu, X.; Wu, Z.; Xia, L.; Xiao, H.; Xiao, S. Y.; Xiao, Y. J.; Xiao, Z. J.; Xie, X. H.; Xie, Y. G.; Xie, Y. H.; Xing, T. Y.; Xiong, X. A.; Xu, G. F.; Xu, J. J.; Xu, Q. J.; Xu, W.; Xu, X. P.; Yan, L.; Yan, L.; Yan, W. B.; Yan, W. C.; Yan, Xu; Yang, H. J.; Yang, H. X.; Yang, L.; Yang, R. X.; Yang, S. L.; Yang, Y. H.; Yang, Y. X.; Yang, Yifan; Yang, Zhi; Ye, M.; Ye, M. H.; Yin, J. H.; You, Z. Y.; Yu, B. X.; Yu, C. X.; Yu, G.; Yu, J. S.; Yu, T.; Yuan, C. Z.; Yuan, W.; Yuan, X. Q.; Yuan, Y.; Yuan, Z. Y.; Yue, C. X.; Yuncu, A.; Zafar, A. A.; Zeng, Y.; Zhang, B. X.; Zhang, Guangyi; Zhang, H. H.; Zhang, H. Y.; Zhang, J. L.; Zhang, J. Q.; Zhang, J. W.; Zhang, J. Y.; Zhang, J. Z.; Zhang, Jianyu; Zhang, Jiawei; Zhang, L.; Zhang, Lei; Zhang, S.; Zhang, S. F.; Zhang, T. J.; Zhang, X. Y.; Zhang, Y.; Zhang, Y. H.; Zhang, Y. T.; Zhang, Yan; Zhang, Yao; Zhang, Yi; Zhang, Z. H.; Zhang, Z. Y.; Zhao, G.; Zhao, J.; Zhao, J. Y.; Zhao, J. Z.; Zhao, Lei; Zhao, Ling; Zhao, M. G.; Zhao, Q.; Zhao, S. J.; Zhao, Y. B.; Zhao, Y. X. Zhao; Zhao, Z. G.; Zhemchugov, A.; Zheng, B.; Zheng, J. P.; Zheng, Y.; Zheng, Y. H.; Zhong, B.; Zhong, C.; Zhou, L. P.; Zhou, Q.; Zhou, X.; Zhou, X. K.; Zhou, X. R.; Zhu, A. N.; Zhu, J.; Zhu, K.; Zhu, K. J.; Zhu, S. H.; Zhu, W. J.; Zhu, X. L.; Zhu, Y. C.; Zhu, Z. A.; Zou, B. S.; Zou, J. H.

doi:10.1103/PhysRevLett.126.092002

Title: Model-Independent Determination of the Spin of the $Ω^{-}$ and Its Polarization Alignment in $ψ (3686) \to Ω^{-} {\bar{Ω}}^{+}$

Journal Article · Fri Mar 05 00:00:00 EST 2021 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.126.092002· OSTI ID:1769454

Ablikim, M.; Achasov, M. N.; Adlarson, P.; Ahmed, S.; Albrecht, M.; Amoroso, A.; An, Q.; Anita,; Bai, Y.; Bakina, O.; Baldini Ferroli, R.; Balossino, I.; Ban, Y.; Begzsuren, K.; Bennett, J. V.; Berger, N.; Bertani, M.; Bettoni, D.; Bianchi, F.; Biernat, J. more »

We present an analysis of the process ψ(3686) → $$Ω^{–}\bar{Ω}^{+} (Ω^{–} → K^{¯}Λ, \bar{Ω}^{+} → K^{+}\bar{Λ}, Λ → pπ^{–}, \bar{Λ} → \bar{p}π^{+})$$ based on a dataset of 448 × 10⁶ ψ(3686) decays collected with the BESIII detector at the BEPCII electron-positron collider. The helicity amplitudes for the process ψ(3686) → Ω^– $$\bar{Ω}^{+}$$ and the decay parameters of the subsequent decay Ω^– → K^–Λ ($$\bar{Ω}^{+} → K^{+}\bar{Λ})$$ are measured for the first time by a fit to the angular distribution of the complete decay chain, and the spin of the Ω^– is determined to be 3/2 for the first time since its discovery more than 50 years ago.

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Research Organization:: Indiana Univ., Bloomington, IN (United States); Univ. of Minnesota, Minneapolis, MN (United States)

Sponsoring Organization:: USDOE Office of Science (SC)

Contributing Organization:: BESIII Collaboration

Grant/Contract Number:: FG02-05ER41374; SC-0012069; U1732263; U1832207; QYZDJ-SSW-SLH003; QYZDJ-SSW-SLH040; SC0012069

OSTI ID:: 1769454

Alternate ID(s):: OSTI ID: 1849645

Journal Information:: Physical Review Letters, Journal Name: Physical Review Letters Vol. 126 Journal Issue: 9; ISSN 0031-9007

Publisher:: American Physical SocietyCopyright Statement

Country of Publication:: United States

Language:: English

References (26)

Symmetries of Baryons and Mesons Gell-Mann, Murray Physical Review, Vol. 125, Issue 3 https://doi.org/10.1103/PhysRev.125.1067	journal	February 1962
Polarization observables in $e^{+} e^{-}$ annihilation to a baryon-antibaryon pair Perotti, Elisabetta; Fäldt, Göran; Kupsc, Andrzej Physical Review D, Vol. 99, Issue 5 https://doi.org/10.1103/PhysRevD.99.056008	journal	March 2019
Observation of parity violation in the <mml:math altimg="si1.gif" overflow="scroll" xmlns:xocs="http://www.elsevier.com/xml/xocs/dtd" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://www.elsevier.com/xml/ja/dtd" xmlns:ja="http://www.elsevier.com/xml/ja/dtd" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:tb="http://www.elsevier.com/xml/common/table/dtd" xmlns:sb="http://www.elsevier.com/xml/common/struct-bib/dtd" xmlns:ce="http://www.elsevier.com/xml/common/dtd" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:cals="http://www.elsevier.com/xml/common/cals/dtd"><mml:msup><mml:mi>Ω</mml:mi><mml:mo>−</mml:mo></mml:msup><mml:mo>→</mml:mo><mml:mi>Λ</mml:mi><mml:msup><mml:mi>K</mml:mi><mml:mo>−</mml:mo></mml:msup></mml:math> decay Lu, L. C.; Burnstein, R. A.; Chakravorty, A. Physics Letters B, Vol. 617, Issue 1-2 https://doi.org/10.1016/j.physletb.2005.04.067	journal	June 2005
Probing $C P$ violation in $Ω \to Λ K \to p π K$ decay Tandean, Jusak Physical Review D, Vol. 70, Issue 7 https://doi.org/10.1103/PhysRevD.70.076005	journal	October 2004
Measurement of the $α$ asymmetry parameter for the $Ω^{-} \to Λ K^{-}$ Decay Chen, Y. C.; Burnstein, R. A.; Chakravorty, A. Physical Review D, Vol. 71, Issue 5 https://doi.org/10.1103/PhysRevD.71.051102	journal	March 2005
Determination of the number of ψ(3686) events at BESIII Ablikim, M.; Achasov, M. N.; Ai, X. C. Chinese Physics C, Vol. 42, Issue 2 https://doi.org/10.1088/1674-1137/42/2/023001	journal	February 2018
Hyperon form factors and diquark correlations Dobbs, S.; Seth, Kamal K.; Tomaradze, A. Physical Review D, Vol. 96, Issue 9 https://doi.org/10.1103/PhysRevD.96.092004	journal	November 2017
Observation of a Hyperon with Strangeness Minus Three Barnes, V. E.; Connolly, P. L.; Crennell, D. J. Physical Review Letters, Vol. 12, Issue 8 https://doi.org/10.1103/PhysRevLett.12.204	journal	February 1964
Pole Approximation to the Decays of the - Particle ( =1680 MeV) Suzuki, M. Progress of Theoretical Physics, Vol. 32, Issue 1 https://doi.org/10.1143/PTP.32.138	journal	July 1964
Investigation of the baryon electromagnetic structure by polarization effects in e+e−→B $$\overline B $$ processesprocesses Dubničková, A. Z.; Dubnička, S.; Rekalo, M. P. Il Nuovo Cimento A, Vol. 109, Issue 3 https://doi.org/10.1007/BF02731012	journal	March 1996
TopoAna: A generic tool for the event type analysis of inclusive Monte-Carlo samples in high energy physics experiments Zhou, Xingyu; Du, Shuxian; Li, Gang Computer Physics Communications, Vol. 258 https://doi.org/10.1016/j.cpc.2020.107540	journal	January 2021
Complete Measurement of the $Λ$ Electromagnetic Form Factors Ablikim, M.; Achasov, M. N.; Adlarson, P. Physical Review Letters, Vol. 123, Issue 12 https://doi.org/10.1103/PhysRevLett.123.122003	journal	September 2019
Nonleptonic Decays of $Ω^{-}$ Hara, Y. Physical Review, Vol. 150, Issue 4 https://doi.org/10.1103/PhysRev.150.1175	journal	October 1966
Polarization and entanglement in baryon–antibaryon pair production in electron–positron annihilation Nature Physics, Vol. 15, Issue 7, p. 631-634 https://doi.org/10.1038/s41567-019-0494-8	journal	May 2019
Review of Particle Physics Tanabashi, M.; Hagiwara, K.; Hikasa, K. Physical Review D, Vol. 98, Issue 3 https://doi.org/10.1103/PhysRevD.98.030001	journal	August 2018
Quantum numbers of the $X (3872)$ state and orbital angular momentum in its $ρ^{0} J / ψ$ decay Aaij, R.; Adeva, B.; Adinolfi, M. Physical Review D, Vol. 92, Issue 1 https://doi.org/10.1103/PhysRevD.92.011102	journal	July 2015
Spin and Unitary-Spin Independence in a Paraquark Model of Baryons and Mesons Greenberg, O. W. Physical Review Letters, Vol. 13, Issue 20 https://doi.org/10.1103/PhysRevLett.13.598	journal	November 1964
On the general theory of collisions for particles with spin Jacob, M.; Wick, G. C. Annals of Physics, Vol. 7, Issue 4 https://doi.org/10.1016/0003-4916(59)90051-X	journal	August 1959
Event generators at BESIII Rong-Gang, Ping Chinese Physics C, Vol. 32, Issue 8 https://doi.org/10.1088/1674-1137/32/8/001	journal	August 2008
Measurement of the Asymmetry in the Decay ${\bar{Ω}}^{+} \to \bar{Λ} K^{+} \to \bar{p} π^{+} K^{+}$ Lu, L. C.; Burnstein, R. A.; Chakravorty, A. Physical Review Letters, Vol. 96, Issue 24 https://doi.org/10.1103/PhysRevLett.96.242001	journal	June 2006
$e^{+} e^{-}$ annihilation into baryon-antibaryon pairs Körner, J. G.; Kuroda, M. Physical Review D, Vol. 16, Issue 7 https://doi.org/10.1103/PhysRevD.16.2165	journal	October 1977
Ω− non-leptonic decays Finjord, J. Physics Letters B, Vol. 76, Issue 1 https://doi.org/10.1016/0370-2693(78)90116-8	journal	May 1978
Measurement of the Spin of the $Ω^{-}$ Hyperon Aubert, B.; Barate, R.; Bona, M. Physical Review Letters, Vol. 97, Issue 11 https://doi.org/10.1103/PhysRevLett.97.112001	journal	September 2006
Design and construction of the BESIII detector Ablikim, M.; An, Z. H.; Bai, J. Z. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 614, Issue 3 https://doi.org/10.1016/j.nima.2009.12.050	journal	March 2010
Rigorous spin tests from usual strong decays Doncel, M. G.; Michel, L.; Minnaert, P. Nuclear Physics B, Vol. 38, Issue 2 https://doi.org/10.1016/0550-3213(72)90321-5	journal	March 1972
First measurements of timelike form factors of the hyperons, $Λ^{0}$ , $Σ^{0}$ , $Σ^{+}$ , $Ξ^{0}$ , $Ξ^{-}$ , and $Ω^{-}$ , and evidence of diquark correlations Dobbs, S.; Tomaradze, A.; Xiao, T. Physics Letters B, Vol. 739 https://doi.org/10.1016/j.physletb.2014.10.025	journal	December 2014

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Title: Model-Independent Determination of the Spin of the Ω − and Its Polarization Alignment in ψ ( 3686 ) → Ω − Ω ¯ +

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Title: Model-Independent Determination of the Spin of the $Ω^{-}$ and Its Polarization Alignment in $ψ (3686) \to Ω^{-} {\bar{Ω}}^{+}$