1. General Seminars

Probing CPT violation in meson mixing by a noncyclic phase

by Antonio Capolupo (Universita' di Salerno)

Aula Edificio 22 (Laboratori Nazionali di Frascati)

Aula Edificio 22

Laboratori Nazionali di Frascati

The presence of noncyclic phases is revealed in the time evolution of mixed meson systems. Such phases are related to the parameter z describing the CPT violation; moreover, a nonzero phase difference between particle and antiparticle arises only in the presence of CPT symmetry breaking. Thus, a completely new test for the CPT invariance can be provided by the study of such phases in mixed mesons. Systems which are particularly interesting for such an analysis are the $B0_s -- \bar{B}0_s $ and the $K_0 -- \bar{K}_0$ ones. In order to introduce noncyclic phases, some aspects of the formalism describing the mixed neutral mesons are analyzed.
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