TESTING THE NONLOCALITY OF QUANTUM-THEORY IN 2-KAON SYSTEMS

An idea for testing the non-local character of quantum theory in syste ms made of two neutral kaons is suggested. Such tests require detectin g two long-lived or two short-lived neutral kaons in coincidence, when copper slabs are either interposed on or removed from their paths. Th ey may be performed at an asymmetric PHI0-factory. They could answer s ome questions raised by the EPR paradox and Bell's inequalities. If su ch tests are performed and if predictions of quantum mechanics and sta ndard theory of kaon regeneration are verified experimentally, all des criptions of the relevant phenomena in terms of local interactions wil l be ruled out in principle with the exception of very peculiar ones, which imply the existence of hidden variables, of different kinds of k aons corresponding to different values of the hidden variables, and, f or some of these kaons, of regeneration probabilities enhanced by a fa ctor of the order of 400 or more over the average. Of course, the expe riment may also reveal a break down of quantum theory.