A search has been made for photoproduced bosons or leptons of mass between 1.2 and 3.5 GeV that decay into either an electron-positron pair, two photons, or an electron and a photon. Within the sensitivity of the experiment no evidence for any new narrow resonance was found. An upper limit is given for the cross section per nucleon times the branching ratio.
Get full paper (pdf, 230 KB)
Return to publication list
Send e-mail to author at firstname.lastname@example.org