Study of antiproton annihilation on neutrons into omega pi(-) pi(0)

摘要

Data are presented on antiproton neutron annihilation at rest into omegapi (-) pi(0) taken with the Crystal Barrel detector at LEAR (CERN) using a liquid deuterium target. The partial wave analysis shows evidence for at least two omegapi vector resonances above the rho(770) ground-state. Possible evidence for a third rho' state with a mass around 1180 MeV is discussed. The results are compared to model dependent predictions concerning the nature of the rho' states. (C) 2004 Elsevier B.V. All rights reserved.