DAMA/LIBRA is running at the Gran Sasso National Laboratory of the I.N.F.N.. Here the results obtained with a further exposure of 0.34 ton × yr are presented. They refer to two further annual cycles collected one before and one af- ter the first DAMA/LIBRA upgrade occurred on September/October 2008. 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 (DM) particles in the galactic halo on the basis of the DM annual modulation signature (8.9 C.L. for the cumulative exposure). In particular, with the cumulative exposure the modulation amplitude of the single-hit events in the (2 – 6) keV energy interval measured in NaI(Tl) target is (0.0116±0.0013) cpd/kg/keV; the measured phase is (146 ± 7) days and the measured period is (0.999 ± 0.002) yr, values well in agreement with those expected for the DM particles.

Bernabei, R., Belli, P., Cappella, F., Cerulli, R., Dai, C.j., D'Angelo, A., et al. (2010). New results from DAMA/LIBRA. THE EUROPEAN PHYSICAL JOURNAL. C, PARTICLES AND FIELDS, 67, 39-49 [10.1140/epjc/s10052-010-1303-9].

New results from DAMA/LIBRA

BERNABEI, RITA;MONTECCHIA, FRANCESCO;NOZZOLI, FRANCESCO;
2010-01-01

Abstract

DAMA/LIBRA is running at the Gran Sasso National Laboratory of the I.N.F.N.. Here the results obtained with a further exposure of 0.34 ton × yr are presented. They refer to two further annual cycles collected one before and one af- ter the first DAMA/LIBRA upgrade occurred on September/October 2008. 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 (DM) particles in the galactic halo on the basis of the DM annual modulation signature (8.9 C.L. for the cumulative exposure). In particular, with the cumulative exposure the modulation amplitude of the single-hit events in the (2 – 6) keV energy interval measured in NaI(Tl) target is (0.0116±0.0013) cpd/kg/keV; the measured phase is (146 ± 7) days and the measured period is (0.999 ± 0.002) yr, values well in agreement with those expected for the DM particles.
2010
Pubblicato
Rilevanza internazionale
Articolo
Sì, ma tipo non specificato
Settore FIS/04 - FISICA NUCLEARE E SUBNUCLEARE
Settore FIS/01 - FISICA SPERIMENTALE
English
Con Impact Factor ISI
Scintillation detectors, elementary particle processes
Bernabei, R., Belli, P., Cappella, F., Cerulli, R., Dai, C.j., D'Angelo, A., et al. (2010). New results from DAMA/LIBRA. THE EUROPEAN PHYSICAL JOURNAL. C, PARTICLES AND FIELDS, 67, 39-49 [10.1140/epjc/s10052-010-1303-9].
Bernabei, R; Belli, P; Cappella, F; Cerulli, R; Dai, Cj; D'Angelo, A; He, Hl; Incicchitti, A; Kuang, Hh; Ma, Xh; Montecchia, F; Nozzoli, F; Prosperi, ...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/2108/15875
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 850
  • ???jsp.display-item.citation.isi??? 782
social impact