Test of CP Symmetry in Hyperon to Neutron Decays

Basit Öğe Kaydı
dc.authoridQin, Jiajun/0000-0002-9956-2358
dc.authoriddai, jianping/0000-0003-4802-4485
dc.authoridJanchiv, Shinebayar/0000-0003-1207-3322
dc.authoridxu, ye/0009-0007-9798-2723
dc.authoridGuo, Ruipeng/0000-0002-7195-7315
dc.authoridZhang, Jiawei/0000-0002-9202-0070
dc.authoridChen, Qi/0000-0002-6568-7267
dc.authorwosidQin, Jiajun/AAK-8695-2020
dc.authorwosidCHEN, BING/KHX-6659-2024
dc.authorwosiddai, jianping/AAI-7046-2020
dc.authorwosidtian, wang/ABG-8993-2021
dc.authorwosidZhang, Wenbin/JXX-8070-2024
dc.authorwosidCervelli, Alberto/X-7416-2018
dc.authorwosidJanchiv, Shinebayar/U-1611-2018
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.accessioned2024-05-19T14:51:05Z
dc.date.available2024-05-19T14:51:05Z
dc.date.issued2023
dc.departmentİstinye Üniversitesien_US
dc.description.abstractThe quantum entangled J/psi -> Sigma(+)(Sigma) over bar (-) pairs from (1.0087 +/- 0.0044) x 10(10) J/psi events taken by the BESIII detector are used to study the nonleptonic two-body weak decays Sigma(+) -> n pi(+) and (Sigma) over bar (-) -> (n) over bar pi(-). The CP-odd weak decay parameters of the decays Sigma(+) -> n pi(+) (alpha(+)) and (Sigma) over bar (-) -> (n) over bar pi(-) ((alpha) over bar (-)) are determined to be 0.0481 +/- 0.0031(stat) +/- 0.0019(syst) and -0.0565 +/- 0.0047(sta)t +/- 0.0022(syst), respectively. The decay parameter (alpha) over bar (-) is measured for the first time, and the accuracy of alpha(+) is improved by a factor of 4 compared to the previous results. The simultaneously determined decay parameters allow the first precision CP symmetry test for any hyperon decay with a neutron in the final state with the measurement of A(CP) = (alpha(+) + (alpha) over bar-)/(alpha(+) - (alpha) over bar (-))/2 = -0.080 +/- 0.052(stat) +/- 0.028(sys)t. Assuming CP conservation, the average decay parameter is determined as = (alpha(+) - (alpha) over bar (-))/2 = -0.0506 +/- 0.0026(stat) +/- 0.0019(syst), while the ratios alpha(+)/alpha(0) and (alpha) over bar (-)/(alpha) over bar (0) are -0.0490 +/- 0.0032(stat) +/- 0.0021(syst) and -0.0571 +/- 0.0053(stat) +/- 0.0032(syst), where alpha(0) and (alpha) over bar (0) are the decay parameters of the decays Sigma(+) -> p pi(0) and (Sigma) over bar (-) -> (p) over bar pi(0), respectively.en_US
dc.description.sponsorshipNational Key R&D Program of China [2020YFA0406300, 2020YFA0406400]; National Natural Science Foundation of China (NSFC) [11635010, 11735014, 11835012, 11935015, 11935016, 11935018, 11961141012, 12022510, 12025502, 12035009, 12035013, 12061131003, 12192260, 12192261, 12192262, 12192263, 12192264, 12192265, 12221005, 12225509, 12235017]; Chinese Academy of Sciences (CAS) Large-Scale Scientific Facility Program; CAS Center for Excellence in Particle Physics (CCEPP); CAS Key Research Program of Frontier Sciences [QYZDJ-SSW-SLH003, QYZDJ-SSW-SLH040]; 100 Talents Program of CAS; Institute of Nuclear and Particle Physics (INPAC); Shanghai Key Laboratory for Particle Physics and Cosmology; Shanghai Pujiang Program [20PJ1401700]; ERC [758462]; European Union [894790]; German Research Foundation DFG [443159800, 455635585, CRC 1044, FOR5327, GRK 2149]; Istituto Nazionale di Fisica Nucleare, Italy; Ministry of Development of Turkey [DPT2006K-120470]; National Research Foundation of Korea [NRF-2022R1A2C1092335]; National Science and Technology fund of Mongolia; National Science Research and Innovation Fund (NSRF) via the Program Management Unit for Human Resources & Institutional Development, Research and Innovation of Thailand [B16F640076]; Polish National Science Centre [2019/35/O/ST2/02907]; Swedish Research Council; Olle Engkvist Foundation [200-0605]; U.S. Department of Energy [DE-FG02-05ER41374]en_US
dc.description.sponsorshipThe BESIII Collaboration thanks the staff of BEPCII and the IHEP computing center for their strong support. This work is supported in part by National Key R&D Program of China under Contracts No. 2020YFA0406300, No. 2020YFA0406400; National Natural Science Foundation of China (NSFC) under Contracts No. 11635010, No. 11735014, No. 11835012, No. 11935015, No. 11935016, No. 11935018, No. 11961141012, No. 12022510, No. 12025502, No. 12035009, No. 12035013, No. 12061131003, No. 12192260, No. 12192261, No. 12192262, No. 12192263, No. 12192264, No. 12192265, No. 12221005, No. 12225509, No. 12235017; the Chinese Academy of Sciences (CAS) Large-Scale Scientific Facility Program; the CAS Center for Excellence in Particle Physics (CCEPP); 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; Sponsored by Shanghai Pujiang Program (20PJ1401700); ERC under Contract No. 758462; European Union's Horizon 2020 research and innovation programme under Marie Sklodowska-Curie grant agreement under Contract No. 894790; German Research Foundation DFG under Contracts No. 443159800, 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. NRF-2022R1A2C1092335; National Science and Technology fund of Mongolia; National Science Research and Innovation Fund (NSRF) via the Program Management Unit for Human Resources & Institutional Development, Research and Innovation of Thailand under Contract No. B16F640076; Polish National Science Centre under Contract No. 2019/35/O/ST2/02907; The Swedish Research Council; the Olle Engkvist Foundation under Contract No. 200-0605; U.S. Department of Energy under Contract No. DE-FG02-05ER41374.en_US
dc.identifier.doi10.1103/PhysRevLett.131.191802
dc.identifier.issn0031-9007
dc.identifier.issn1079-7114
dc.identifier.issue19en_US
dc.identifier.pmid38000397en_US
dc.identifier.scopus2-s2.0-85177768607en_US
dc.identifier.scopusqualityQ1en_US
dc.identifier.urihttps://doi.org10.1103/PhysRevLett.131.191802
dc.identifier.urihttps://hdl.handle.net/20.500.12713/5870
dc.identifier.volume131en_US
dc.identifier.wosWOS:001173352900002en_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.subjectSigmaen_US
dc.titleTest of CP Symmetry in Hyperon to Neutron Decaysen_US
dc.typeArticleen_US

Dosyalar

Koleksiyon

WoS İndeksli Yayınlar Koleksiyonu
PubMed İndeksli Yayınlar Koleksiyonu
Scopus İndeksli Yayınlar Koleksiyonu