Novel Bell's inequalities for entangled K(0)K(0) pairs.

We derive new Bell's inequalities for entangled K(0)K(0) pairs. This requires (1) mutually exclusive setups allowing either K(0) vs K(0) or K(S) vs K(L) detection and (2) the use of kaon regenerators. The inequalities turn out to be significantly violated by quantum mechanics, resulting in interesting tests of local realism at straight phi factories and pp machines.