1,722,020 research outputs found
Dark Matter search
No full textSome general arguments on the particle Dark Matter search are addressed. The WIMP direct detection technique is mainly considered and recent results obtained by exploiting the annual modulation signature are summarized
Dark Matter particles in the galactic halo
No full textThe DAMA/LIBRA–phase1 and the former DAMA/NaI data (cumulative expo-
sure 1.33 ton x yr, corresponding to 14 annual cycles) give evidence at 9.3
sigma 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 radio-pure NaI(Tl) target. Results and comparisons will be shortly addressed as well as perspectives of the
presently running DAMA/LIBRA-phase2. Finally, some arguments arisen are mentioned in the Appendix
International Journal of Modern Physics A Particles and Fields; Gravitation; Cosmology ISSN (print): 0217-751X | ISSN (online): 1793-656X Volume 29, Issue 19 (30 July 2014) SPECIAL ISSUE: Direct Dark Matter Searches; Editor: Rita Bernabei
No full textThis SPECIAL ISSUE is dedicated to the Direct Dark Matter Searches; several techniques and experiments are contributing in this issue to offer a suitable overview
La luce di DAMA
No full textL'esperimento DAMA/LIBRA e i suoi risultati sullo studio diretto e indipendente da modelli della materia oscura di natura particellare sono brevemente ricordat
Direct Dark Matter Investigation
No full textExperimental efforts and theoretical developments 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. This motivates experimental efforts to investigate the direct detection of these particles with various techniques. In particular, experiments offering a model independent signature for the presence of Dark Matter (DM) particles in the Galactic halo are mandatory. In this paper some general arguments will be summarized and particular care will be given to the results obtained by the DAMA/LIBRA experiment (sensitive mass: ∼250 kg) at the Gran Sasso National Laboratory of the I.N.F.N. by exploiting the model independent DM annual modulation signature with higly radiopure NaI(Tl) target-detectors. Cumulatively with the former DAMA/NaI (sensitive mass: ∼100 kg) an exposure of 1.17 ton yr, collected over 13 annual cycles, has been released so far; a model independent evidence of the presence of DM particles in the galactic halo is supported at 8.9 ρ confidence level (C.L.). In addition, experimental and theoretical uncertainties and their implications in the interpretation and comparison of different kinds of results will be shortly addressed. Some perspectives will be mentioned
Segnali dall'Universo oscuro
No full textAlcuni argomenti generali sulla Materia Oscura dell'Universo sono introdotti. Risultati degli esperimenti DAMA al Gran Sasso sono riassunti
Competitiveness of a very low radioactive ton scintillator for particle Dark Matter
No full textSome of the arguments in favour of a very-low-radioactive ton scintillator for a second generation experiment on particle dark matter search are outlined. The possibility to realize such a detector with NaI(Tl) crystals is also briefly discussed
Gallium solar neutrino experiments: results and perspectives
No full textThe results achieved so far by the GALLEX and SAGE experiments are briefly summarized. The main perspectives for the GNO experiment are outlined
La materia oscura dell'Universo e la sua investigazione
No full textLa comprensione della natura dell'Universo
che ci circonda eÁ uno dei propositi piuÁ antichi e
piuÁ ambiziosi dell'uomo. Alla quantitaÁ e alla
natura della materia che lo pervade eÁ infatti legato
il destino stesso dell'Universo e anche la
possibilitaÁ di sondare nuove prospettive di Fisica.
Questo ha motivato nell'ultimo secolo sviluppi
tecnologici e osservazioni sempre più
complesse
Dark Matter searches
No full textA short summary of the current strategies to search for Dark Matter candidates are summarized. Emphasis is given in particular to the WIMP direct searche
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