JET PRODUCTION AND FRAGMENTATION IN E+E- ANNIHILATION AT 12-43 GEV
ZEITSCHRIFT FUR PHYSIK C-PARTICLES AND FIELDS 22:4 (1984) 307-340
OBSERVATION OF THE REACTION GAMMA-GAMMA-]PPBAR-PI+PI-
PHYSICS LETTERS B 142:1-2 (1984) 135-140
Differential cross sections for γγ→p-p in the CM energy range from 2.0 to 3.1 GeV
Physics Letters B 130:6 (1983) 449-453
Abstract:
Exclusive production of proton-antiproton pairs by two photon scattering at CM energies between 2.0 GeV and 3.1 GeV has been measured with the TASSO detector at the e+e- storage ring PETRA. The angular distribution is flat within the accepted CM angular range |cos Θ*|≤0.7. The integrated cross section (|cos Θ*|≤0.6) drops from about 4 nb at 2 GeV to less than 0.5 nb above 3 GeV. For the two-photon production of the ηc(2984) and its subsequent decay into proton-antiproton the upper limit Γ(ηc→γγ)·B(η c→pp)<0.32 keV (95% CL) is found. © 1983.Observation of Ξ-, Ξ- production in e+e- anihilation
Physics Letters B 130:5 (1983) 340-344
Abstract:
We present evidence for the production of Ξ·-, Ξ- in e+e- annihilation into hadrons. Our measurements yields: 0.026 ± 0.008 (stat.) ± 0.009 (syst.) Ξ-,Ξ- per hadronic event at W ∼ 34 GeV. Using our previous measurements of Λ, Λ and p,p production we obtain the relative yields (Ξ-, Ξ-/(Λ, Λ = 0.087 ± 0.03 (stat.) ± 0.03 (syst.) and (Ξ-, Ξ-/(p, p = 0.033 ± 0.011 (stat.) ± 0.011 (syst.). © 1983.D*± production by e+e- annihilation near 34.4 GeV cm energy
Physics Letters B 126:6 (1983) 493-498