Publication

Search for the Lepton Number Violation Decay Φ → Π+π+e-e- Via j/ψ → Φη

Yunxuan Song
2025

Abstract

Using an electron-positron collision data sample corresponding to (1.0087 +/- 0.0044) x 10(10) J/psi events collected using the BESIII detector at the BEPCII collider, we firstly search for the lepton number violation decay phi -> pi(+)pi(+)e(-)e(-) via J/psi -> phi eta. No obviously signals are found. The upper limit on the branching fraction of phi -> pi(+)pi(+)e(-)e(-) is set to be 1.3 x 10(-5) at the 90% confidence level.

Official source

Graph Chat

Chat with Graph Search

Ask any question about EPFL courses, lectures, exercises, research, news, etc. or try the example questions below.

DISCLAIMER: The Graph Chatbot is not programmed to provide explicit or categorical answers to your questions. Rather, it transforms your questions into API requests that are distributed across the various IT services officially administered by EPFL. Its purpose is solely to collect and recommend relevant references to content that you can explore to help you answer your questions.

Search for the Lepton Number Violation Decay Φ → Π<sup>+</sup>π<sup>+</sup>e<sup>-</sup>e<sup>-</sup> Via <i>j</i>/ψ → Φη

Chat with Graph Search

Observation of ηc (1 S,2 S) and χcJ decays to 2 (π+π-)η via ψ (3686) radiative transitions

Search for Hadronic Decays of Feebly-interacting Particles at Na62

Measurement of the T(t)over-barh and Th Production Rates in the H →b(b)over-bar Decay Channel Using Proton-proton Collision Data at √s=13 Tev