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

The BESIII collaboration

doi:10.1088/1674-1137/ade955

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

The BESIII collaboration

Institute of Higher Research

CAS - Institute of High Energy Physics
Budker Institute of Nuclear Physics of the Siberian Branch of the RAS
Novosibirsk State University
Uppsala University
Zhengzhou University
Chinese Academy of Sciences
Johannes Gutenberg University Mainz
University of Turin
University of Science and Technology of China
Southeast University, Nanjing
Joint Institute for Nuclear Research
Peking University
University of Chinese Academy of Sciences
National Centre for Nuclear Research
Mongolian Academy of Sciences
National Institute for Nuclear Physics
Carnegie Mellon University
University of Münster
Wuhan University
Lanzhou University
Istinye University
Nankai University
China University of Geosciences, Wuhan
Soochow University
Henan University
Nanjing University
North China Electric Power University
Tsinghua University
CAS - Institute of Modern Physics
Fudan University
Guangxi University of Technology
Jilin University
Hunan Normal University
Hunan University
Sun Yat-Sen University
Chung-Ang University
University of Bristol
Shandong University
Yunnan University
Helmholtz Institute Mainz
Ruhr University Bochum
University of South China
University of Jinan
Liaoning University
Inner Mongolia University
Moscow Institute of Physics and Technology
Henan Normal University
Nanjing Normal University
University of Ferrara
University of Manchester
University of Oxford
GSI Helmholtz Centre for Heavy Ion Research
Guangxi University
Shandong Normal University
Indiana University Bloomington
University of Hawai'i at Mānoa
Suranaree University of Technology
South China Normal University
University of the Punjab
Hangzhou Normal University
Huangshan College
University of Groningen
Indian Institute of Technology Madras
Justus Liebig University Giessen
Qufu Normal University
Liaoning Normal University
Renmin University of China
Hebei University
China Center of Advanced Science and Technology World Laboratory
Sichuan University
Guangxi Normal University
Shanxi University
Central China Normal University
Henan University of Science and Technology
Henan University of Technology
Central South University
Zhejiang University
Goethe University Frankfurt
COMSATS University Islamabad
IBA
University of Perugia
Petersburg Nuclear Physics Institute (PNPI)
Shanghai Jiao Tong University
Ministry of Education of the People's Republic of China
Near East University
Beihang University
Yantai University
Shanxi Normal University
University of Science and Technology Liaoning

Research output: Contribution to journal › Article › peer-review

1 Scopus citations

Abstract

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 via the BESIII detector at the BEPCII collider. No significant signal is observed, and the upper limit on the branching fraction of ω → π⁺π⁺e⁻e⁻ + c.c. at the 90% confidence level is determined for the first time to be 2.8 × 10⁻⁶.

Original language	English
Article number	103002
Journal	Chinese Physics C
Volume	49
Issue number	10
DOIs	https://doi.org/10.1088/1674-1137/ade955
State	Published - 1 Oct 2025

Keywords

lepton number violation
matter anti-matter asymmetry
neutrinoless double beta decay

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10.1088/1674-1137/ade955

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@article{9c12d761d9574243bb67778de91f485e,

title = "Search for the lepton number violation decay ω→π+π+e−e−+c.c.",

abstract = "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) {\texttimes} 1010 J/ψ events collected via the BESIII detector at the BEPCII collider. No significant signal is observed, and the upper limit on the branching fraction of ω → π+π+e−e− + c.c. at the 90\% confidence level is determined for the first time to be 2.8 {\texttimes} 10−6.",

keywords = "lepton number violation, matter anti-matter asymmetry, neutrinoless double beta decay",

author = "M. Ablikim and Achasov, \{M. N.\} and P. Adlarson and Ai, \{X. C.\} and S. Kabana and \{The BESIII collaboration\}",

year = "2025",

month = oct,

day = "1",

doi = "10.1088/1674-1137/ade955",

language = "English",

volume = "49",

journal = "Chinese Physics C",

issn = "1674-1137",

number = "10",

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TY - JOUR

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

AU - Ablikim, M.

AU - Achasov, M. N.

AU - Adlarson, P.

AU - Ai, X. C.

AU - Kabana, S.

AU - The BESIII collaboration

PY - 2025/10/1

Y1 - 2025/10/1

N2 - 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 via the BESIII detector at the BEPCII collider. No significant signal is observed, and the upper limit on the branching fraction of ω → π+π+e−e− + c.c. at the 90% confidence level is determined for the first time to be 2.8 × 10−6.

AB - 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 via the BESIII detector at the BEPCII collider. No significant signal is observed, and the upper limit on the branching fraction of ω → π+π+e−e− + c.c. at the 90% confidence level is determined for the first time to be 2.8 × 10−6.

KW - lepton number violation

KW - matter anti-matter asymmetry

KW - neutrinoless double beta decay

UR - https://www.scopus.com/pages/publications/105019200377

U2 - 10.1088/1674-1137/ade955

DO - 10.1088/1674-1137/ade955

M3 - Article

AN - SCOPUS:105019200377

SN - 1674-1137

VL - 49

JO - Chinese Physics C

JF - Chinese Physics C

IS - 10

M1 - 103002

ER -

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

Abstract

Keywords

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