Latest results from DAMA/LIBRA

by Dr Pierluigi Belli (Roma Tor Vergata)

Thursday 29 Apr 2010, 16:00 → 17:15 Europe/Brussels

E/3rd floor-E.349 - Seminar room (E.349) (Marc de Hemptinne (chemin du Cyclotron, 2, Louvain-la-Neuve))

The DAMA/LIBRA set-up (about 250 kg highly radiopure NaI(Tl)) is running at the Gran Sasso National Laboratory of the I.N.F.N.. The new results obtained with a further exposure of 0.34 ton x yr are presented. The cumulative exposure with those previously released by the former DAMA/NaI and by DAMA/LIBRA is now 1.17 ton × yr, corresponding to 13 annual cycles. The data further confirm the model independent evidence of the presence of Dark Matter particles in the galactic halo; they satisfy all the many peculiarities of the Dark Matter annual modulation signature. The cumulative confidence level is 8.9 sigma. No systematic or side reaction able to account for the whole measured modulation amplitude and to simultaneously satisfy all the peculiarities of the signature is available.