Study of p pbar in e+ e- reaction at rest

Preliminary results on e+e- pair production in pbar p annihilation of PS170 experiment at LEAR at CERN are presente

Measurement of the proton form factor in the time-like region

An experiment (LEAR: PS170) has been designed to detect the annihilation of antiprotons in electron-positron pairs. It aims to measure the proton form factor in the time-ike region and to observe the spectrum of vector mesons between 1 and 1.6 GeV

Status and future of the experiment PS170

The LEAR experiment PS170 is designed to detect the e+e- pairs from pbar annihilation. Data have been taken at 300, 600 and 1500 MeV/c incident momenta. The analysis of the 300 MeV/c data gave 200 2-body events clearly separated from the hadronic background

Electron-positron pair production in p pbar annihilation at LEAR

The preliminary results of the PS170 experiment, installed on the LEAR beam, at CERN, are reported here. Annihilihations at rest and with antiproton momentum ranging from 100 to 290 MeV/c have been collected in the first run of the experiment