Events

Seminar of the Institute of Theoretical Physics of University of Wrocław

Direct detection of an arrow of time

prof. dr hab. Ludwik Turko

Recent result of the BABAR collaboration concerning microscopic time-reversal non-invariance will be presented. Time reversal violation effects have been usually claimed through the registration of the CP (charge-parity) violation effects in kaons and B meson decay and then as the corollary from the CPT theorem. Recent BABAR study, published in October this year, of B meson decays allows for a direct observation of time-reversal non-invariance without relying on CPT symmetries. This important and fundamental result is based on the quantum entanglement of B0-antiB0 states resulting from the Upsilon Y(4s) meson decay.