Affiliation:
1. Institute of Physics, University of Zielona Gora, ul. Podgorna 50, 65-246 Zielona Gora, Poland
Abstract
We show that the real parts of diagonal matrix elements of the exact effective Hamiltonian governing the time evolution in the subspace of states of neutral kaons and similar particles cannot be equal for t>t0 (t0 is the instant of creation of the pair K0, [Formula: see text]) when the total system under consideration is CPT invariant but CP noninvariant. The unusual consequence of this result is that, contrary to the properties of stable particles, the masses of the unstable particle, e.g. K0, and its antiparticle, [Formula: see text], need not be equal for t≫t0 in the case of preserved CPT and violated CP symmetries.
Publisher
World Scientific Pub Co Pte Lt
Subject
General Physics and Astronomy,Astronomy and Astrophysics,Nuclear and High Energy Physics