9/11/2017, Aula A del Dipartimento di Fisica, ore 16:30. Relatore: X. Artru, CNRS/IN2P3 and Université Lyon-1
- Data: 9/11/2017
- Ora: 16:30
- Luogo: Aula A Dipartimento di Fisica
Abstract:
The spin observables of a polarized reaction obey spin inequalities translating the positivity of the cross section matrix, which is the density matrix of a state gathering all the polarized particles (initial and final ones).
This "quantum positivity" is more severe than the mere "classical positivity" of the cross section. We give their physical meaning in terms of separable or entangled states and compare their respective domains in the space of observables.
In a second part, we recall the Knowless-Collins rules for Monte-Carlo generation of polarized and entangled cascades and tell how to apply them in the recursive jet model and in e+e- annihilation into hadrons.
