TY - JOUR

T1 - Search for the lepton number violation decay ω→π+π+e−e−+c.c.

AU - BESIII Collaboration

AU - Ачасов, Михаил Николаевич

AU - Мучной, Николай Юрьевич

AU - Николаев, Иван Борисович

AU - Ablikim, M.

N1 - Supported in part by National Key R&D Program of China (2023YFA1606000, 2023YFA1606704); National Natural Science Foundation of China (NSFC) (12035009, 11875170, 11635010, 11935015, 11935016, 11935018, 12025502, 12035013, 12061131003, 12192260, 12192261, 12192262, 12192263, 12192264, 12192265, 12221005, 12225509, 12235017, 12361141819); the Chinese Academy of Sciences (CAS) Large-Scale Scientific Facility Program; CAS (YSBR-101); 100 Talents Program of CAS; The Institute of Nuclear and Particle Physics (INPAC) and Shanghai Key Laboratory for Particle Physics and Cosmology; Agencia Nacional de Investigación y Desarrollo de Chile (ANID), Chile (ANID PIA/APOYO AFB230003); ERC (758462); German Research Foundation DFG (FOR5327); Istituto Nazionale di Fisica Nucleare, Italy; Knut and Alice Wallenberg Foundation (2021.0174, 2021.0299); Ministry of Development of Turkey (DPT2006K-120470); National Research Foundation of Korea (NRF-2022R1A2C1092335); National Science and Technology fund of Mongolia; Polish National Science Centre (2024/53/B/ST2/00975); STFC (United Kingdom); Swedish Research Council (2019.04595); U. S. Department of Energy (DE-FG02-05ER41374) Search for the lepton number violation decay ω→π+π+e−e−+c.c. / BESIII // Chinese Physics C. - 2025. - T. 49. - № 103002

PY - 2025

Y1 - 2025

N2 - The lepton number violation decay ω→π+π+e-e- + c.c. is searched for via J/ψ→ωη using a data sample of (1.0087 ± 0.0044) × 1010 J/ψ events collected by the BESIII detector at the BEPCII collider. No significant signal isobserved, and the upper limit on the branching fraction of ω→π+π+e-e- + c.c. at the 90\% confidence level is determinedfor the first time to be 2.8 × 10-6. Content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI. Article funded by SCOAP3 and published under licence by Chinese Physical Society and the Institute of High Energy Physics of the Chinese Academy of Science and the Institute of Modern Physics of the Chinese Academy of Sciences and IOP Publishing Ltd.

AB - The lepton number violation decay ω→π+π+e-e- + c.c. is searched for via J/ψ→ωη using a data sample of (1.0087 ± 0.0044) × 1010 J/ψ events collected by the BESIII detector at the BEPCII collider. No significant signal isobserved, and the upper limit on the branching fraction of ω→π+π+e-e- + c.c. at the 90\% confidence level is determinedfor the first time to be 2.8 × 10-6. Content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI. Article funded by SCOAP3 and published under licence by Chinese Physical Society and the Institute of High Energy Physics of the Chinese Academy of Science and the Institute of Modern Physics of the Chinese Academy of Sciences and IOP Publishing Ltd.

UR - https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=105019200377&origin=inward

UR - https://www.mendeley.com/catalogue/1bbb3111-8415-3c13-a692-1a2040bbf499/

U2 - 10.1088/1674-1137/ade955

DO - 10.1088/1674-1137/ade955

M3 - Article

VL - 49

JO - Chinese Physics C

JF - Chinese Physics C

SN - 1674-1137

M1 - 103002

ER -