Search for the lepton number violation decay $\phi \to \pi^+ \pi^+ e^- e^-$ via $J/\psi\to \phi\eta$ - INSPIRE

DataBETA

Search for the lepton number violation decay $\phi \to \pi^+ \pi^+ e^- e^-$ via $J/\psi\to \phi\eta$

BESIII

Collaboration

Aug 10, 2023

10 pages

Published in:

Chin.Phys.C 49 (2025) 4, 043001,
Chin.Phys.C 49 (2025) 043001

Published: 2025

e-Print:

2308.05490 [hep-ex]

DOI:

10.1088/1674-1137/ada350

Experiments:

BEPC-BES-III

View in:

ADS Abstract Service

reference search1 citation

Citations per year

Abstract: (IOP)

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^-

via

J/\psi\to \phi\eta

. No obviously signals are found. The upper limit on the branching fraction of

\phi \to \pi^+ \pi^+ e^- e^-

is set to be

1.3\times10^{-5}

at the 90% confidence level.

Note:

10 pages, 5 figures

Lepton number violation
matter anti-matter asymmetry
neutrinoless double beta decay
electron positron: annihilation
electron positron: colliding beams
J/psi(3100): electroproduction
J/psi(3100): hadronic decay
eta: radiative decay
photon: pair production
Phi(1020): semileptonic decay

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