2023-03-22T23:25:19Z
https://lib.psnc.pl/oai-pmh-repository.xml
oai:lib.psnc.pl:583
2014-07-31T09:50:43Z
PSNCRepository:PSNCExternalRepository PSNCRepository:PSNCExternalRepository:cmst:2005 PSNCRepository:PSNCExternalRepository:cmst PSNCRepository:PSNCExternalRepository:cmst:2005:vol11(1)2005 PSNCRepository
t0 (t0 is the instant of creation of the pair) 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 “1” and its antiparticle “2” need not be equal for t o t0 in the case of preserved CPT and violated CP symmetries. We also show that there exists an approximation which is more accurate than the LOY, and which leads to an effective Hamiltonian whose diagonal matrix elements posses properties consistent with the conclusions for the exact effective Hamiltonian described above.]]>