Leading modes of 3π~0 production in proton-proton collisions at incident proton momentum 3.35 GeV/c

摘要

For the first time pp → pp3π~0 has been measured at an incident proton momentum of P_b = 3.35GeV/c. The total cross section has been determined. The reaction mechanism is studied by a Dalitz plot analyses, which indicate that the leading production and decay mechanism is closely related to the simultaneous excitation of Δ(1232) and N*(1440) baryon resonances.