Open AccessDAMA RESULTS: DARK MATTER IN THE GALACTIC HALO
Author(s) -
R. Bernabei,
P. Belli,
F. Cappella,
V. Caracciolo,
R. Cerulli,
C. J. Dai,
A. d’Angelo,
Alessandro Di Marco,
H. L. He,
A. Incicchitti,
X. H.,
F. Montecchia,
X. D. Sheng,
R. G. Wang,
Z. P. Ye
Publication year - 2013
Publication title -
acta polytechnica
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.207
H-Index - 15
eISSN - 1805-2363
pISSN - 1210-2709
DOI - 10.14311/ap.2013.53.0589
Subject(s) - physics , dark matter , astrophysics , halo , galactic halo , dark matter halo , upgrade , weakly interacting massive particles , universe , astronomy , cosmology , scalar field dark matter , galaxy , dark energy , computer science , operating system
Experimental efforts and theoretical developmens support that most of the Universe is Dark and a large fraction of it should be made of relic particles; many possibilities are open on their nature and interaction types. In particular, the DAMA/LIBRA experiment at Gran Sasso Laboratory (sensitive mass: ~250 kg) is mainly devoted to the investigation of Dark Matter (DM) particles in the Galactic halo by exploiting the model independent DM annual modulation signature with higly radiopure Na I(Tl) targets. DAMA/LIBRA is the succesor of the first generation DAMA/NaI (sensitive mass: ~100 kg); cumulatively the two experiments have released so far the results obtained by analyzing an exposure of 1.17 t yr, collected over 13 annual cycles. The data show a model independent evidence of the presence of DM particles in the galactic halo at 8.9σ confidence level (C.L.). Some of the already achieved results are shortly reminded, the last upgrade occurred at fall 2010 is mentioned and future perspectives are sumarized.