Séminaire: Superluminal neutrinos in long baseline experiments and SN1987a

par Dr Luca PANIZZI (IPN-Lyon)

vendredi 14 oct. 2011, 14:30 → 15:30 Europe/Paris

Salle 9110 (Dept.Phys.)

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.

Slides Panizzi.pdf