A new interpretation of one CPT violation test for $K_0-{\bar{K}}_0$ system

Abstract

Using a more accurate approximation than that applied by Lee--Oehme--Yang we show that the interpretation of the tests measuring the difference between the $K_0$ mass and the ${\bar{K}}_0$ mass as the CPT--symmetry test is wrong. We find that in fact such tests are tests for the existence of the hypothetical interaction allowing the first order $|\Delta S|=2$ transitions $K_0\rightleftharpoons {\bar{K}}_0$.

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