ARE NARROW POSITRON-ELECTRON LINES CREATED BY DECAY OF EXCITED VACUUM-LIKE SYSTEMS FORMED FROM A COHERENT PIONIC PHASE PRESENT IN HEAVY-ION COLLISIONS?

A novel description of several narrow, correlated electron-positron lines observed in heavy-ion collisions, arises from a physical picture involving the decay of a group of related, excited coherent bosonic states, which resemble an excited, chira σ vacuum-condensate. These systems are formed in the collision of a coherent pionic phase present in the heavy ions. Further experimental tests of the idea, involve the specific form of the opening angle correlation between the positron-electron pair, and possibly, the nature of the charge states of the final-state ions.