The results obtained with the total exposure of 1.04 ton × yr collected by DAMA/LIBRA–phase1 deep underground at the Gran Sasso National Labo- ratory (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 radio-pure NaI(Tl) target. The modulation amplitude of the single-hit events in the (2–6) keV energy interval is (0.0112 ± 0.0012) cpd/kg/keV; the measured phase is (144 ± 7) days and the measured period is (0.998 ± 0.002) yr, values 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.

Bernabei, R., Belli, P., Cappella, F., Caracciolo, V., Castellano, S., Cerulli, R., et al. (2014). The annual modulation signature for Dark Matter: DAMA/LIBRA-phase1 results and perspectives. ADVANCES IN HIGH ENERGY PHYSICS, 2014, 605659-1-605659-10 [http://dx.doi.org/10.1155/2014/605659].

The annual modulation signature for Dark Matter: DAMA/LIBRA-phase1 results and perspectives

BERNABEI, RITA;Caracciolo, V;D'ANGELO, SILIO;
2014-01-01

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 Labo- ratory (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 radio-pure NaI(Tl) target. The modulation amplitude of the single-hit events in the (2–6) keV energy interval is (0.0112 ± 0.0012) cpd/kg/keV; the measured phase is (144 ± 7) days and the measured period is (0.998 ± 0.002) yr, values 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.
2014
Pubblicato
Rilevanza internazionale
Articolo
Esperti anonimi
Settore FIS/04 - FISICA NUCLEARE E SUBNUCLEARE
English
Con Impact Factor ISI
Dark Matter; rare processes; astroparticle physics;
http://www.hindawi.com/journals/ahep/2014/605659/
Bernabei, R., Belli, P., Cappella, F., Caracciolo, V., Castellano, S., Cerulli, R., et al. (2014). The annual modulation signature for Dark Matter: DAMA/LIBRA-phase1 results and perspectives. ADVANCES IN HIGH ENERGY PHYSICS, 2014, 605659-1-605659-10 [http://dx.doi.org/10.1155/2014/605659].
Bernabei, R; Belli, P; Cappella, F; Caracciolo, V; Castellano, S; Cerulli, R; Dai, Cj; D'Angelo, A; D'Angelo, S; Di Marco, A; He, Hl; Incicchitti, A; ...espandi
Articolo su rivista
File in questo prodotto:
Non ci sono file associati a questo prodotto.

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2108/92376
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 9
  • ???jsp.display-item.citation.isi??? 9
social impact