Study of anti-p p ->2pi+2pi- annihilation from S states

The results of the spin-parity analysis of pbar-p -->2pi+2pi-annihilations at very low momentum p (= 50 MeV/c) are reported. (continue

A search for axial vectors in anti-p p ->K+- KO(Miss) pi-+ pi+pi- annihilations at rest in gaseous hydrogen at NTP

The study of the pbar p --> K+- K0miss pi-+ pi+pi- channel (7016 events), from pbar p annihilations in a gaseous hydrogen target at NTP, with the OBELIX spectrometer at LEAR (CERN), is presented. (continue

Study on anti neutron proton annihilaton into two mesons in the momentum range between 50 to 400 MeV/c with OBELIX

We measured the in flight annihilation frequencies and cross sections of reactions nbar p --> pi+ pi0, pi+ eta, K+ KS, in the antineutron momentum range between 50 and 400 MeV/c. The annihilation frequencies of these channels from the different allowed initial states were calculated and some information about the nbar-p annihilation dynamics were obtained. The first determination of the D-wave contribution in this momentum range was also obtained

New data on Delta++ baryon productiom in anti-p d annihilation at rest by OBELIX Collaboration

New experimental results on pbar-d annihilation at rest into pions plus a high momentum proton in the final state are discussed. The data sample was collected using the OBELIX spectrometer at the LEAR facility (CERN). The annihilation probabilities, or more precisely the yields (Y) via channels pbar-d -->2pi-pi+pi0p and -->3pi-2pi+pi0p with proton momenta > 400 MeVj have been measured for the first time (continue