The highly radiopure $\simeq$ 250 kg NaI(Tl) DAMA/LIBRA set-up is running at the Gran Sasso National Laboratory of the I.N.F.N.. 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$\times$yr. The collected DAMA/LIBRA data satisfy all the many peculiarities of the DM annual modulation signature. Neither systematic effects nor side reactions can account for the observed modulation amplitude and contemporaneously satisfy all the several requirements of this DM signature. Thus, the presence of Dark Matter particles in the galactic halo is supported also by DAMA/LIBRA and, considering the former DAMA/NaI and the present DAMA/LIBRA data all together (total exposure 0.82 ton$\times$yr), the presence of Dark Matter particles in the galactic halo is supported at 8.2 $\sigma$ C.L..

Bernabei, R., Belli, P., Cappella, F., Cerulli, R., Dai, C.J., D'Angelo, A., et al. (2008). First results from DAMA/LIBRA and the combined results with DAMA/NaI. THE EUROPEAN PHYSICAL JOURNAL. C, PARTICLES AND FIELDS, 56(3), 333-355 [10.1140/epjc/s10052-008-0662-y].

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

#### Abstract

The highly radiopure $\simeq$ 250 kg NaI(Tl) DAMA/LIBRA set-up is running at the Gran Sasso National Laboratory of the I.N.F.N.. 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$\times$yr. The collected DAMA/LIBRA data satisfy all the many peculiarities of the DM annual modulation signature. Neither systematic effects nor side reactions can account for the observed modulation amplitude and contemporaneously satisfy all the several requirements of this DM signature. Thus, the presence of Dark Matter particles in the galactic halo is supported also by DAMA/LIBRA and, considering the former DAMA/NaI and the present DAMA/LIBRA data all together (total exposure 0.82 ton$\times$yr), the presence of Dark Matter particles in the galactic halo is supported at 8.2 $\sigma$ C.L..
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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
low background techniques; expeimental set up; Dark Matter;
Bernabei, R., Belli, P., Cappella, F., Cerulli, R., Dai, C.J., D'Angelo, A., et al. (2008). First results from DAMA/LIBRA and the combined results with DAMA/NaI. THE EUROPEAN PHYSICAL JOURNAL. C, PARTICLES AND FIELDS, 56(3), 333-355 [10.1140/epjc/s10052-008-0662-y].
Bernabei, R; Belli, P; Cappella, F; Cerulli, R; Dai, Cj; D'Angelo, A; He, Hl; Incicchitti, A; Kuang, Hh; Ma, Jm; Montecchia, F; Nozzoli, F; Prosperi, D; Sheng, Xd; Ye, Zp
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/2108/25383
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