3–8 Jun 2019
Bari
Europe/Rome timezone
WIN2019. The 27th International Workshop on Weak Interactions and Neutrinos.

First model independent results from DAMA/LIBRA–phase2

7 Jun 2019, 11:40
30m
Sala Federico II (Bari)

Sala Federico II

Bari

Oral Astroparticle Physics and Cosmology Astroparticle Physics and Cosmology

Speaker

Vincenzo Caracciolo (INFN-LNGS)

Description

The first results obtained by the DAMA/LIBRA–phase2 experiment are presented. The data have been collected over 6 independent annual cycles corresponding to a total exposure of 1.13 ton × yr, deep underground at the Gran Sasso Laboratory. The DAMA/LIBRA–phase2 apparatus, about 250 kg highly radio-pure NaI(Tl), profits from a second generation high quantum efficiency photomultipliers and of new electronics with respect to DAMA/LIBRA–phase1. The improved experimental configuration has also allowed to lower the software energy threshold. The DAMA/LIBRA–phase2 data confirm the evidence of a signal that meets all the requirements of the model independent Dark Matter annual modulation signature, at 9.5 sigma C.L. in the energy region (1–6) keV. In the energy region between 2 and 6 keV, where data are also available from DAMA/NaI and DAMA/LIBRA–phase1, the achieved C.L. for the full exposure (2.46 ton × yr) is 12.9 sigma.

Primary authors

Vincenzo Caracciolo (INFN-LNGS) DAMA collaboration

Presentation materials