First results from DAMA/LIBRA and the combined results with DAMA/NaI

By R. Bernabei, P. Belli, F. Cappella, R. Cerulli, C. Dai, A. D'angelo, H. L. He, A. Incicchitti, H. Kuang, J. Ma and 11 more. 2008

1,054 citations recorded by the source corpus.

The highly radiopure ≃ 250 kg NaI(Tl) DAMA/LIBRA set-up is running at the Gran Sasso National Laboratory of the INFN. In this paper the first result obtained by exploiting the model independent annual modulation signature for Dark Matter (DM) particles is presented. It refers to an exposure of 0.53 ton×yr. The collected DAMA/LIBRA data satisfy all the many peculiarities of the DM annual modulation signature. Neither systematic effects nor side reactions able to account for the observed modulation amplitude and to contemporaneously satisfy all the several requirements of this DM signature are available. Considering the former DAMA/NaI and the present DAMA/LIBRA data all together (total exposure 0.82 ton×yr), the presence of Dark Matter particles in the galactic halo is supported, on the basis of the DM annual modulation signature, at 8.2 σ C.L.; in particular, in the energy interval (2–6) keV, the modulation amplitude is (0.0131±0.0016) cpd/kg/keV and the phase and the period are well compatible with June 2nd and one year, respectively.

Subfields: Nuclear and High Energy Physics, Statistical and Nonlinear Physics

View Paper: https://www.semanticscholar.org/paper/55046c7cc6ea66ee6d5eec977ff79b7258e039c1

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In Nuclear and High Energy Physics

1. L. Strigari
2. Michael Kuhlen
3. P. Madau
4. J. Diemand
5. T. Schwetz
6. Jonathan L. Feng
7. A. Fitzpatrick
8. James S. Bullock

In Statistical and Nonlinear Physics

1. Jonathan L. Feng
2. A. Fitzpatrick
3. David Poland
4. P. Madau
5. T. Undagoitia
6. Jure Zupan
7. B. Moore
8. N. Weiner

Citations in the corpus

• History of dark matter (2018, positive): “Over the past nearly two decades, DAMA’s signal has persisted and become increasingly statistically significant as more data were collected (Bernabei et al., 2003), including with the more recent DAMA/LIBRA detector (Bernabei et al., 2008, 2010).”
• Global interpretation of direct Dark Matter searches after CDMS-II results (2009, methodology): “The combined data from DAMA/NaI [1] (7 annual cycles) and DAMA/LIBRA [2] (4 annual cycles) with a total exposure of 0.”
• Composite scalar dark matter (2012, background): “9 standard deviations from the expected background [27, 28].”