Speaker
Andrea Longhin
(LNF)
Description
The OPERA neutrino experiment in the underground Gran Sasso Laboratory
has measured the velocity of neutrinos from the CERN CNGS beam over a baseline of 730 km with unprecedented accuracy. The measurement is based on the high-statistics data taken by OPERA in the years 2009, 2010 and 2011.
Dedicated upgrades of the CNGS timing system and of the OPERA detector, as well as a high-precision geodesy campaign for the measurement of the neutrino baseline allowed reaching comparable systematic and statistical accuracies. A neutrino time of flight corresponding to a velocity higher than the speed of
light was observed.
