CPT and CP, an entangled couple

CP , T AND CPT VERSUS TEMPORAL ASYMMETRIES FOR ENTANGLED STATES OF THE B d - SYSTEM

The observables used in the K-system to characterize T and CPT violation are no longer useful for the B d-system, since the width difference ∆Γ between the physical states is vanishingly small. We show that only Im(ε) and Re(δ) can survive if ∆Γ = 0, and build alternative CP-odd, CPT-odd, T-odd and temporal asymmetries for the B ± → B 0 , ¯ B 0 transitions. These quantities enable us to test T ...

Cp and Cpt Measurements at Daφne *

Starting from the time evolution of the C-odd ¯ K 0 K 0 system, we analyze the asymmetries measurable at DAΦNE and their implications on CP violation and on the possible tests of T and CPT symmetries. In particular the ratio ǫ ′ ǫ can be measured with high precision (up to about 10 −4 for the real part). The CP-, T-and CPT-violating parameters can be explored in K S semileptonic decays with an ...

Decoherence induced CPT violation and entangled neutral mesons

We discuss two classes of semi-microscopic theoretical models of stochastic space-time foam in quantum gravity and the associated effects on entangled states of neutral mesons, signalling an intrinsic breakdown of CPT invariance. One class of models deals with a specific model of foam, initially constructed in the context of non-critical (Liouville) string theory, but viewed here in the more ge...

T and CPT SYMMETRIES in ENTANGLED NEUTRAL MESON SYSTEMS

Abstract. Genuine tests of an asymmetry under T and/or CPT transformations imply the interchange between in-states and out-states. I explain a methodology to perform modelindependent separate measurements of the three CP, T and CPT symmetry violations for transitions involving the decay of the neutral meson systems in Band Φ-factories. It makes use of the quantum-mechanical entanglement only, f...

CPT , T and CP Violation in B Mixing Markus