Investigation of the ?I=1=2 Rule and Test of CP Symmetry through the Measurement of Decay Asymmetry Parameters in ?- Decays

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dc.authoridLane, Jake/0000-0002-5816-9488
dc.contributor.authorAblikim, M.
dc.contributor.authorAchasov, M. N.
dc.contributor.authorAdlarson, P.
dc.contributor.authorAi, X. C.
dc.contributor.authorAliberti, R.
dc.contributor.authorAmoroso, A.
dc.contributor.authorÇetin, Serkant Ali
dc.date.accessioned2024-05-19T14:51:08Z
dc.date.available2024-05-19T14:51:08Z
dc.date.issued2024
dc.departmentİstinye Üniversitesien_US
dc.description.abstractUsingo1008744 thorn x106J=psi events collected with the BESIII detector, numerous Xi-and Lambda decay asymmetry parameters are simultaneously determined from the processJ=psi ->Xi- Xi thorn ->Lambda op pi- thorn pi- Lambda o n pi 0 thorn pi thorn and its charge-conjugate channel. The precisions of alpha Lambda 0for Lambda -> n pi 0and alpha Lambda 0for Lambda -> n pi 0compared to world averages are improved by factors of 4 and 1.7, respectively. The ratio of decayasymmetry parameters of Lambda -> n pi 0to that of Lambda -> p pi-,h alpha Lambda 0i=h alpha Lambda-i, is determined to be0.8730.012 thorn 0.011-0.010, where the first and the second uncertainties are statistical and systematic, respectively.The ratio is smaller than unity more than5 sigma, which signifies the existence of the Delta I1/43=2transitionin Lambda for the first time. Besides, we test forCPsymmetry in Xi-->Lambda pi-and in Lambda -> n pi 0with the bestprecision to dateen_US
dc.description.sponsorshipNational Key R&D Program of China [2020YFA0406400, 2020YFA0406300, 2023YFA1609400]; National Natural Science Foundation of China (NSFC) [11635010, 11735014, 11835012]; Chinese Academy of Sciences (CAS) Large -Scale Scientific Facility Program; CAS Center for Excellence in Particle Physics (CCEPP); Joint Large-Scale Scientific Facility Funds of the NSFC and CAS [U1832207, U2032111, U1732263, U1832103]; CAS Key Research Program of Frontier Sciences [QYZDJ-SSW-SLH003, QYZDJ-SSW-SLH040]; The 100 Talents Program of CAS; Institute of Nuclear and Particle Physics (INPAC); Shanghai Key Laboratory for Particle Physics and Cosmology; European Union [894790]; German Research Foundation DFG [455635585, CRC 1044, FOR5327, GRK 2149]; Istituto Nazionale di Fisica Nucleare, Italy; Ministry of Development of Turkey [DPT2006K-120470]; National Research Foundation of Korea [NRF2022R1A2C1092335]; National Science and Technology fund of Mongolia; National Science Research and Innovation Fund (NSRF) via the Program Management Unit for Human Resources and Institutional Development, Research and Innovation of Thailand [B16F640076]; Polish National Science Centre [2019/35/O/ST2/02907]; Knut and Alice Wallenberg Foundation, Sweden; Swedish Research Council; Swedish Foundation for International Cooperation in Research and Higher Education (STINT); U.S. Department of Energy [DE-FG02- 05ER41374]; Olle Engkvist Foundation [200-0605]; Lundstrom-Aman Foundation; CAS Youth Team Program [YSBR-101]en_US
dc.description.sponsorshipThe authors thank Professor X. G. He and Professor X. Feng for helpful discussions. The BESIII Collaboration thanks the staff of BEPCII and the IHEP computing center and the supercomputing center of the University of Science and Technology of China (USTC) for their strong support. This work is supported in part by National Key R & D Program of China under Contracts No. 2020YFA0406400, 2020YFA0406300, No. 2023YFA1609400; National Natural Science Foundation of China (NSFC) under Contracts No. 11635010, No. 11735014, No. 11835012, Chinese Academy of Sciences (CAS) Large -Scale Scientific Facility Program; the CAS Center for Excellence in Particle Physics (CCEPP) ; Joint Large-Scale Scientific Facility Funds of the NSFC and CAS under Contracts No. U1832207, No. U2032111, No. U1732263, No. U1832103; CAS Key Research Program of Frontier Sciences under Contracts No. QYZDJ-SSW-SLH003, No. QYZDJ-SSW-SLH040; 100 Talents Program of CAS; The Institute of Nuclear and Particle Physics (INPAC) and Shanghai Key Laboratory for Particle Physics and Cosmology; European Union ' s Horizon 2020 research and innovation programme under Marie Sklodowska-Curie grant agreement under Contract No. 894790; German Research Foundation DFG under Contract No. 455635585, Collaborative Research Center CRC 1044, FOR5327, GRK 2149; Istituto Nazionale di Fisica Nucleare, Italy; Ministry of Development of Turkey under Contract No. DPT2006K-120470; National Research Foundation of Korea under Contract No. NRF2022R1A2C1092335; National Science and Technology fund of Mongolia; National Science Research and Innovation Fund (NSRF) via the Program Management Unit for Human Resources and Institutional Development, Research and Innovation of Thailand under Contract No. B16F640076; Polish National Science Centre under Contract No. 2019/35/O/ST2/02907; The Knut and Alice Wallenberg Foundation, Sweden, the Swedish Research Council, the Swedish Foundation for International Cooperation in Research and Higher Education (STINT) ; U.S. Department of Energy under Contract No. DE-FG02- 05ER41374; Olle Engkvist Foundation under Contract No. 200-0605 and Lundstrom-Aman Foundation. CAS Youth Team Program under Contract No. YSBR-101.en_US
dc.identifier.doi10.1103/PhysRevLett.132.101801
dc.identifier.issn0031-9007
dc.identifier.issn1079-7114
dc.identifier.issue10en_US
dc.identifier.pmid38518329en_US
dc.identifier.scopus2-s2.0-85187192701en_US
dc.identifier.scopusqualityQ1en_US
dc.identifier.urihttps://doi.org10.1103/PhysRevLett.132.101801
dc.identifier.urihttps://hdl.handle.net/20.500.12713/5880
dc.identifier.volume132en_US
dc.identifier.wosWOS:001202437400007en_US
dc.identifier.wosqualityN/Aen_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherAmer Physical Socen_US
dc.relation.ispartofPhysical Review Lettersen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.snmz20240519_kaen_US
dc.subjectKaon Decaysen_US
dc.subjectViolationen_US
dc.subjectHyperonen_US
dc.titleInvestigation of the ?I=1=2 Rule and Test of CP Symmetry through the Measurement of Decay Asymmetry Parameters in ?- Decaysen_US
dc.typeArticleen_US

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