摘要: A rather detailed prediction of the mass spectrum and decay modes of Baryonium (or alternatively - diquonium) states has been proposed. The Baryonium in this approach is pictured as a diquark and an antidiquark bound by a short ra... 展开 A rather detailed prediction of the mass spectrum and decay modes of Baryonium (or alternatively - diquonium) states has been proposed. The Baryonium in this approach is pictured as a diquark and an antidiquark bound by a short range force but separated by high angular momentum (L approximately or >1). Color plays a crucial role in the procedure, leading to the emergence of two distinct types of qq anti q anti q resonances. One kind has the qq (anti q anti q) pair in colour anti 3 (3) representation and hence consists of broad states decaying primarily into anti B B (T(True)-diquonium). The other type arises when the relevant color representation is 6(anti 6) which means that decay into anti B B must be suppressed if color is to be confined (M(Mock)-diquonium). Both qq anti q anti q classes are expected to decay only reluctantly into mesons as a result of the angular momentum barrier, an argument which derives its main support from the Dual Unitarisation scheme. Experimentally, this means that M-diquoniums should be rather easily detectable objects as they are distinguished by their narrowness on the one hand and their cascade decay mode on the other. The primary aim here is to elaborate on the production mechanisms for the various trajectories, using these to get some estimates of the cross-sections involved. (Atomindex citation 09:416068) 收起