Search for Low Mass Exotic leptonic or bosonic structures

TL;DR

This paper investigates existing experimental data for evidence of a low-mass exotic particle near 214.3 MeV, which could indicate a new leptonic or bosonic state, by searching for small peaks or shoulders in the data.

Contribution

It provides an analysis of various datasets to identify potential signals of a low-mass exotic particle around 214.3 MeV, supporting the hypothesis of its existence.

Findings

Possible small peak observed near 214.3 MeV in some datasets

No definitive evidence but hints support the existence of the proposed state

Encourages further experimental investigation

Abstract

Recently, several papers discussed the existence of a low mass leptonic structure. It was suggested that the $\Sigma^{+}$ disintegration: $\Sigma^{+}\to$pP$^{0}$, P$^{0}\to\mu^{-}\mu^{+}$ proceeds through an intermediate particle P$^{0}$ having a mass close to M$\approx$~214.3 MeV. The present work intends to look at other available data, in order to observe the eventual existence of a small peak or shoulder, at a mass close to M=214.3 MeV, which can strengthen the existence of a state produced by two leptons of opposite electric charge.