Polarization and entanglement in baryon-antibaryon pair production in electron-positron annihilation

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dc.authoridLavezzi, Lia/0000-0002-4928-8151|Chen, Qi/0000-0002-6568-7267|Spataro, Stefano/0000-0001-9601-405X|Wang, Meng/0000-0003-4067-1127|Sheng, Jin-Huan/0000-0002-2655-6301|wang, qi/0000-0002-2794-6897|Zhemchugov, Alexey/0000-0002-3360-4965|Zhao, Lei/0000-0003-0101-4845|Gradl, Wolfgang/0000-0002-9974-8320|Da Rocha Rolo, Manuel Dionisio/0000-0001-8518-3755|Song, Weimin/0000-0003-1376-2293|Messchendorp, Johan/0000-0001-6649-0549|Li, Kun/0000-0002-3638-2974|Kolcu, Onur Bugra/0000-0002-9177-1286|Li, Ruoyu/0000-0002-9929-3725|Calligaris, Luigi/0000-0002-9951-9448|Wang, Yue/0000-0001-8673-6358|Yuncu, Alperen/0000-0001-9696-9331|Farineli, Riccardo/0000-0002-7972-9093|Guo, Ruipeng/0000-0002-7195-7315|Kuessner, Meike/0000-0002-0028-0490|Wang, Yunwen/0009-0008-3083-7799|Wang, Jiacheng/0000-0003-4327-1508|Cetin, Serkant Ali/0000-0001-5050-8441|Yu, Binxing/0000-0002-9231-3543|Mangoni, Alessio/0000-0002-4786-6632|Wiedner, Ulrich/0000-0002-9002-6583|Cossio, Fabio/0000-0003-0454-3144|Muramatsu, Hajime/0000-0003-0305-4461|Lange, Jens Soren/0000-0003-0234-0474|Schoenning, Karin/0000-0002-3490-9584|Liu, Hongbang/0000-0003-1695-3263|Guskov, Anatoliy/0000-0002-9791-759X|Shi, Xin/0000-0001-9910-9345|Maas, Frank/0000-0002-9271-1883|Xia, Xin/0000-0002-0907-0721|Heinsius, Fritz-Herbert/0000-0002-9545-5117|Zhao, Qiang/0000-0001-8334-2580|Wang, Yifang/0000-0001-8331-6980|Khoukaz, Alfons/0000-0001-7108-895X|Mezzadri, Giulio/0000-0003-0838-9631|Kliemt, Ralf/0000-0002-6013-3329|liu, xiang/0000-0001-7481-4662|Kupsc, Andrzej/0000-0003-4937-2270|Johansson, Tord/0000-0002-6945-716X|Greco, Michela/0000-0002-7299-7829|Albrecht, Malte/0000-0001-6180-4297|Ikegami Andersson, Walter/0000-0002-8617-2414|Qu, Sanqiang/0000-0002-7518-0961
dc.authorwosidwang, Xiaoming/KBB-8854-2024
dc.authorwosidMa, Mingyang/JXM-3330-2024
dc.authorwosidlu, yuan/JZD-0832-2024
dc.authorwosidliu, feng/HPC-8076-2023
dc.authorwosidLI, WEI/JUE-9796-2023
dc.authorwosidzhu, yujie/KBC-4009-2024
dc.authorwosidLavezzi, Lia/AAO-9660-2021
dc.contributor.authorAblikim, M.
dc.contributor.authorAchasov, M. N.
dc.contributor.authorAhmed, S.
dc.contributor.authorAlbrecht, M.
dc.contributor.authorAlekseev, M.
dc.contributor.authorAmoroso, A.
dc.contributor.authorÇetin, Serkant Ali
dc.date.accessioned2024-07-18T20:56:58Z
dc.date.available2024-07-18T20:56:58Z
dc.date.issued2019
dc.departmentFakülteler, Mühendislik ve Doğa Bilimleri Fakültesi, Enerji Sistemleri Mühendisliği Bölümüen_US
dc.description.abstractParticles directly produced at electron-positron colliders, such as the J/psi meson, decay with relatively high probability into a baryon-antibaryon pair(1). For spin-1/2 baryons, the pair can have the same or opposite helicites. A non-vanishing phase Delta Phi between the transition amplitudes to these helicity states results in a transverse polarization of the baryons(2-4). From the joint angular distribution of the decay products of the bary-ons, this phase as well as the parameters characterizing the baryon and the antibaryon decays can be determined. Here, we report the measurement of Delta Phi = 42.4 +/- 0.6 +/- 0.5 degrees using Lambda -> p pi(-) and (Lambda) over bar -> (p) over bar pi(+), (n ) over bar pi(0) decays at BESIII. We find a value for the Lambda -> p pi(-) decay parameter of alpha(-) = 0.750 +/- 0.009 +/- 0.004, 17 +/- 3% higher than the current world average, which has been used as input for all Lambda polarization measurements since 1978(5,6). For (Lambda) over bar -> (p) over bar pi(+) we find alpha(+) = -0.758 +/- 0.010 +/- 0.007, giving A(CP) = (alpha(-) + alpha(+))/(alpha(-) - alpha(+)) = -0.006 +/- 0.012 +/- 0.007, a precise direct test of charge-parity symmetry (CP) violation in Lambda decays.en_US
dc.description.sponsorshipNational Key Basic Research Program of China [2015CB856700]; National Natural Science Foundation of China (NSFC) [11335008, 11375205, 11425524, 11625523, 11635010, 11735014, 11835012, 11875054]; Chinese Academy of Sciences (CAS) Large-Scale Scientific Facility Program; CAS Center for Excellence in Particle Physics (CCEPP); NSFC [U1532257, U1532258, U1732102, U1732263, U1832207]; CAS [U1532257, U1532258, U1732102, U1732263, U1832207]; CAS Key Research Program of Frontier Sciences [QYZDJ-SSW-SLH003, QYZDJ-SSW-SLH040]; 100 Talents Program of CAS; CAS President's International Fellowship Initiative; Shanghai Key Laboratory for Particle Physics and Cosmology; German Research Foundation DFG [CRC 1044, FOR 2359]; Istituto Nazionale di Fisica Nucleare, Italy; Koninklijke Nederlandse Akademie van Wetenschappen (KNAW) [530-4CDP03]; Ministry of Development of Turkey [DPT2006K-120470]; National Science and Technology fund; The Swedish Research Council; Knut and Alice Wallenberg Foundation; US Department of Energy [DE-FG02-05ER41374, DE-SC-0010118, DE-SC-0010504, DE-SC-0012069]; University of Groningen (RuG); Helmholtzzentrum fuer Schwerionenforschung GmbH (GSI), Darmstadt; INPACen_US
dc.description.sponsorshipThe BESIII collaboration thanks the staff of BEPCII and the IHEP computing centre for their support. This work is supported in part by the National Key Basic Research Program of China under contract no. 2015CB856700; the National Natural Science Foundation of China (NSFC) under contract nos. 11335008, 11375205, 11425524, 11625523, 11635010, 11735014, 11835012 and 11875054; the 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 contract nos. U1532257, U1532258, U1732102, U1732263 and U1832207; CAS Key Research Program of Frontier Sciences under contract nos. QYZDJ-SSW-SLH003 and QYZDJ-SSW-SLH040; 100 Talents Program of CAS; the CAS President's International Fellowship Initiative; INPAC and Shanghai Key Laboratory for Particle Physics and Cosmology; German Research Foundation DFG under the contracts Collaborative Research Center CRC 1044 and FOR 2359; Istituto Nazionale di Fisica Nucleare, Italy; Koninklijke Nederlandse Akademie van Wetenschappen (KNAW) under contract no. 530-4CDP03; Ministry of Development of Turkey under contract no. DPT2006K-120470; National Science and Technology fund; The Swedish Research Council; the Knut and Alice Wallenberg Foundation; US Department of Energy under contract nos. DE-FG02-05ER41374, DE-SC-0010118, DE-SC-0010504 and DE-SC-0012069; University of Groningen (RuG); Helmholtzzentrum fuer Schwerionenforschung GmbH (GSI), Darmstadt. All consortium work was carried out at affiliations 1-67.en_US
dc.identifier.doi10.1038/s41567-019-0494-8
dc.identifier.endpage+en_US
dc.identifier.issn1745-2473
dc.identifier.issn1745-2481
dc.identifier.issue7en_US
dc.identifier.scopus2-s2.0-85065295770en_US
dc.identifier.scopusqualityQ1en_US
dc.identifier.startpage631en_US
dc.identifier.urihttps://doi.org/10.1038/s41567-019-0494-8
dc.identifier.urihttps://hdl.handle.net/11411/8925
dc.identifier.volume15en_US
dc.identifier.wosWOS:000473331000013en_US
dc.identifier.wosqualityQ1en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.institutionauthorÇetin, Serkant Ali
dc.language.isoenen_US
dc.publisherNature Portfolioen_US
dc.relation.ispartofNature Physicsen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.subjectAnalyzing Poweren_US
dc.subjectParameteren_US
dc.subjectJ/Psien_US
dc.subjectDecayen_US
dc.subjectHyperonen_US
dc.subjectLambda(Lambda)Over-Baren_US
dc.subjectObservablesen_US
dc.subjectE(+)E(-)en_US
dc.subjectLambdaen_US
dc.titlePolarization and entanglement in baryon-antibaryon pair production in electron-positron annihilationen_US
dc.typeArticleen_US

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