TY - JOUR

T1 - Search for the lepton number violation decay ϕ → π+π+e−e− via J / ψ → ϕη *

AU - BESIII Collaboration

AU - Ablikim 麦, M. 迪娜

AU - Achasov, M. n.

AU - Nikolaev, I. b.

AU - Мучной, Николай Юрьевич

N1 - Zhao, M. G. Search for the lepton number violation decay $\phi o \pi^+ \pi^+ e^- e^-$ via $J/\psi o \phi\eta$ / M. G. Zhao // Chinese Physics C. – 2024. – DOI 10.1088/1674-1137/ada350.

PY - 2025/4/1

Y1 - 2025/4/1

N2 - Using an electron-positron collision data sample corresponding to (1.0087\pm0.0044)\times10^{10} J/\psi events collected using the BESIII detector at the BEPCII collider, we firstly search for the lepton number violation decay phi \to \pi^+ \pi^+ e^- e^-J/\psi\to \phi\eta No obviously signals are found. The upper limit on the branching fraction of phi \to \pi^+ \pi^+ e^- e^- 1.3\times10^{-5} at the 90% confidence level.

AB - Using an electron-positron collision data sample corresponding to (1.0087\pm0.0044)\times10^{10} J/\psi events collected using the BESIII detector at the BEPCII collider, we firstly search for the lepton number violation decay phi \to \pi^+ \pi^+ e^- e^-J/\psi\to \phi\eta No obviously signals are found. The upper limit on the branching fraction of phi \to \pi^+ \pi^+ e^- e^- 1.3\times10^{-5} at the 90% confidence level.

UR - https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=105000297504&origin=inward

UR - https://elibrary.ru/item.asp?id=80144053

U2 - 10.1088/1674-1137/ada350

DO - 10.1088/1674-1137/ada350

M3 - Article

VL - 49

JO - Chinese Physics C

JF - Chinese Physics C

SN - 1674-1137

IS - 4

M1 - 043001

ER -