Nordita HEP Local Seminars

Opera Experiment would be good for Random Dynamics, But Alas...

by Holger Nielsen (Niels Bohr Institute)

Europe/Stockholm
122:026

122:026

Description
It has long been our dream that Lorentz invariance were not fundamentally true but somehow just should appear in practice - at least approximately - and one of the most difficult problems in making such an automatically appearance come about were essentially to get the same speed for different species of particles. In that light of course the Opera experiment could not have been more welcome. However, it must be admitted that it is very hard from neutrino oscillations to have different maximal velocities for different species of neutrinos with the requirement of the order of the Opera experiment and unless we get different velocities the SN1987A neutrino observations would not allow so big Lorentz violating effects either. We shall though point to that it seems to have been TWO groups of neutrinoes arriving from SN1987A with 4.7 hours difference in time.