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Heavy Hyperon-Antihyperon Production

Heavy Hyperon-Antihyperon Production,10.1063/1.2130158,W. Oelert,D. Grzonka,L. Jarczyk,K. Kilian,P. Moskal,P. Winter

Heavy Hyperon-Antihyperon Production  
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Based on the experience from the production of light antihyperon-hyperon (LambdaLambda, SigmaSigma) pairs at LEAR (experiment PS185) it is suggested to continue the investigations towards the heavier antihyperon-hyperon pairs XiXi and OmegaOmega in view of: 1. the production dynamics of the heavier antihyperon-hyperon out of the pp annihilation 2. a comparison of the ``(3 s) (3 s)''- quark system OmegaOmega to the 3 (ss) = 3 phi meson production, where both systems the OmegaOmega and the 3 phi have similar masses (3.345 and 3.057, respectively) and identical valence quark content. A systematic study of the antihyperon-hyperon production with increasing strangeness content is interesting for the following reasons: The OmegaOmega production is the creation of two spin 3/2 objects out of the two spin 1/2 pp particles. Results of the PS185 experiments prove a clear dominance of the spin triplet ss dissociation. In the Omega(Omega) the three s-quarks (three s-quarks) are aligned to spin 3/2 each. If the three ss pairs are now all in spin triplet configurations when created out of the gluonic interaction they should have spin parity quantum number as 3- as long as OmegaOmega is created with relative L = 0 angular momentum. The comparison of the OmegaOmega baryon pair to the phiphiphi three meson production (where the three ss quark pairs might not but can be produced without relative correlation) would provide a unique determination of the intermediate matter state. Measurements of excitation functions and polarization transfers should be used to examine these gluon rich pp --> OmegaOmega and pp --> phiphiphi reaction channels. Such experiments should be performed at the PANDA detector at the FAIR facility of the GSI.
Published in 2005.
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