Recently, several papers discussed the existence of a low mass leptonic structure. It was suggested that the Σ + disintegration: Σ + →pP 0 , P 0 → µ − µ + proceeds through an intermediate particle P 0 having a mass close to M≈ 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.