DETERMINATION OF ALPHA-S IN 1ST AND 2ND ORDER QCD FROM E+E- ANNIHILATION INTO HADRONS
ZEITSCHRIFT FUR PHYSIK C-PARTICLES AND FIELDS 26:2 (1984) 157-174
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