Âderna Fìzika ta Energetika (Jun 2013)

DAMA/LIBRA results and perspectives of the second stage

  • R. Bernabei,
  • P. Belli,
  • F. Cappella,
  • V.Caracciolo,
  • R. Cerulli,
  • C. J. Dai,
  • A. d`Angelo,
  • A. Di Marco,
  • H. L. He,
  • A. Incicchitti,
  • X. H. Ma,
  • F. Montecchia,
  • X. D. Sheng,
  • R. G. Wang,
  • Z. P. Ye

Journal volume & issue
Vol. 14, no. 2
pp. 113 – 120

Abstract

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The DAMA/LIBRA experiment is mainly dedicated to the investigation on DM particles in the Galactic halo by exploiting the model independent Dark Matter (DM) annual modulation signature. The present DAMA/LIBRA and the former DAMA/NaI (exposed masses: about 250 kg and about 100 kg of highly radiopure NaI(Tl), respectively) experiments have released so far a total exposure of 1.17 t · yr collected over 13 annual cycles; they provide a model independent evidence of the presence of DM particles in the galactic halo at 8.9  C.L. The data of another annual cycle in the same DAMA/LIBRA running conditions are at hand. After the substitution (at fall 2010) of all the photomultipliers (PMTs) with new ones, having higher quantum efficiency, DAMA/LIBRA has entered the phase 2; that substitution has allowed to lower the software energy threshold of the experiment in the present data taking. Future perspectives are mentioned.

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