Time reversal symmetry violation in entangled pseudoscalar neutral charmed mesons

The direct observation of time reversal symmetry violation (TV) is important for the test of CPT conservation and the Standard Model. In this paper, we study both time-dependent and time-independent genuine TV signals in entangled D-0 - (D) over bar (0) pairs. A possible CPT-violation effect called the omega effect is also investigated. In the C = -1 entangled state, the asymmetries due to TV are calculated to be of the order of 10(-5) to 10(-4) within the Standard Model, but the modification due to the. effect in the C = -1 states is found to be about 10%-30% when vertical bar omega vertical bar similar to 10(-4). This result is consistent with our Monte Carlo simulation, which implies that with 10(9) to 10(10) events, TV signals can be observed in the entangled D-0 - (D) over bar (0) pairs, and the bound of omega similar to 10(-3) can be reached. The time-dependent and the time-independent asymmetries in the C = -1 D-0 - (D) over bar (0) system provides a window to detect new physics such as the omega effect, although they are not easily observable.