EPJ Web of Conferences
Volume 70, 20141st International Conference on New Frontiers in Physics
|Number of page(s)||13|
|Published online||10 April 2014|
The Dark Matter annual modulation results from DAMA/LIBRA
1 Dip. di Fisica, Università di Roma “Tor Vergata”, I-00133 Rome, Italy
2 INFN, sez. Roma “Tor Vergata”, I-00133 Rome, Italy
3 Dip. di Fisica, Università di Roma “La Sapienza”, I-00185 Rome, Italy
4 INFN, sez. Roma, I-00185 Rome, Italy
5 Laboratori Nazionali del Gran Sasso, I.N.F.N., Assergi, Italy
6 IHEP, Chinese Academy, P.O. Box 918/3, Beijing 100039, China
7 Laboratorio Sperimentale Policentrico di Ingegneria Medica, Università degli Studi di Roma “Tor Vergata”
8 University of Jing Gangshan, Jiangxi, China
a e-mail: firstname.lastname@example.org
Published online: 10 April 2014
The DAMA/LIBRA experiment, running at the Gran Sasso National Laboratory of the I.N.F.N. in Italy, has a sensitive mass of about 250 kg highly radiopure NaI(Tl). It is mainly devoted to the investigation of Dark Matter (DM) particles in the Galactic halo by exploiting the model independent DM annual modulation signature. The present DAMA/LIBRA experiment and the former DAMA/NaI one (the first generation experiment having an exposed mass of about 100 kg) have released so far results corresponding to a total exposure of 1.17 ton × yr over 13 annual cycles. They provide a model independent evidence of the presence of DM particles in the galactic halo at 8.9 σ C.L. on the basis of the investigated DM signature. The data of another annual cycle in the same DAMA/LIBRA running conditions are at hand. After the replacement at the end of 2012 of all the photomultipliers (PMTs) with new ones, having higher quantum efficiency, DAMA/LIBRA has entered to its phase 2; such a replacements allowed the lowering of the software energy threshold of the experiment in the present data taking. A short summary of the obtained results is presented and future perspectives of the experiment mentioned.
© Owned by the authors, published by EDP Sciences, 2014
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 2.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.