CERN Accélérateur de science

Wednesday 19 April
PARTICLE PHYSICS SEMINAR
at 17:00 - Stückelberg Auditorium

The project GRANIT to measure the resonance transitions between the gravitationally bound quantum states of neutrons
by Prof. Valery Nesvizhevsky / Institut Laue-Langevin de Grenoble

The gravitationally bound quantum states of matter were observed for the first time due to unique properties of ultracold neutrons. Some parameters of the lowest quantum states of neutrons were measured in recent experiments in so-called integral and differential measuring modes. We are going to improve considerably the accuracy of these experiments using resonance transitions between the gravitationally bound quantum states of neutrons. In addition to the obvious interest to study this phenomenon itself, this experiment could be useful for different fields of physics such as, for instance, the search for spin-independent or spin-dependent short-range fundamental forces, the quantum-mechanical localization or the loss of quantum coherence. We will discuss different methodical approaches to measure the resonance transitions and the challenges and constrains in such an experiment.

Information : http://dpnc.unige.ch/seminaire/annonce.html
Organizer : J.-S. Graulich