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The Annual Modulation Signature for Dark Matter: DAMA/LIBRA-Phase1 Results and Perspectives
- Source :
- Advances in High Energy Physics, Vol 2014 (2014), Advances in High Energy Physics
- Publication Year :
- 2014
- Publisher :
- Hindawi Publishing Corporation, 2014.
-
Abstract
- The results obtained with the total exposure of 1.04 ton × yr collected by DAMA/LIBRA-phase1 deep underground at the Gran Sasso National Laboratory (LNGS) of the I.N.F.N. during 7 annual cycles are summarized. The DAMA/LIBRA-phase1 and the former DAMA/NaI data (cumulative exposure 1.33 ton × yr, corresponding to 14 annual cycles) give evidence at 9.3 σ C.L. for the presence of Dark Matter (DM) particles in the galactic halo, on the basis of the exploited model independent DM annual modulation signature by using highly radiopure NaI(Tl) target. The modulation amplitude of thesingle-hitevents in the (2–6) keV energy interval is0.0112±0.0012 cpd/kg/keV; the measured phase is144±7days and the measured period is0.998±0.002 yr; values are in a good well in agreement with those expected for DM particles. No systematic or side reactions able to mimic the exploited DM signature have been found or suggested by anyone over more than a decade. Some of the perspectives of the presently running DAMA/LIBRA-phase2 are outlined.
- Subjects :
- Physics
Nuclear reaction
Nuclear and High Energy Physics
DAMA/LIBRA
Article Subject
Dark matter
Astrophysics
lcsh:QC1-999
Settore FIS/04 - Fisica Nucleare e Subnucleare
Galactic halo
Amplitude
Neutrino detector
astroparticle physics
DAMA/NaI
rare processes
Dark Matter
Neutrino oscillation
lcsh:Physics
Subjects
Details
- Language :
- English
- ISSN :
- 16877357
- Database :
- OpenAIRE
- Journal :
- Advances in High Energy Physics
- Accession number :
- edsair.doi.dedup.....8c3db2d8bace31e2c5f5077f86609276
- Full Text :
- https://doi.org/10.1155/2014/605659