Séminaires, soutenances
Séminaire: Superluminal neutrinos in long baseline experiments and SN1987a
par
→
Europe/Paris
Salle 9110 (Dept.Phys.)
Salle 9110
Dept.Phys.
Description
Precise tests of Lorentz invariance in neutrinos can be performed
using long baseline experiments such as MINOS and OPERA or neutrinos
from astrophysical sources. The MINOS collaboration reported a
measurement of the muonic neutrino velocities that hints to
super-luminal propagation, very recently confirmed at 6 sigma by
OPERA. We consider a general parametrisation which goes beyond the
usual linear or quadratic violation considered in
quantum-gravitational models. Supernova bounds and the preferred MINOS
and OPERA regions show a tension, due to the absence of shape
distortion in the neutrino bunch in the far detector of MINOS. The
energy independence of the effect has also been pointed out by the
OPERA results.
A prevoir: une discussion generale sur le sujet (neutrino velocity et consequences) a la suite du seminaire.