First results from DAMA/LIBRA and the combined results with DAMA/NaI (English)

In: The European Physical Journal C   ;  56 ,  3  ;  333-355  ;  2008

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Abstract 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 2 nd and one year, respectively.

Table of contents – Volume 56, Issue 3

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305
The determination of α S from τ decays revisited
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323
Comparison of Geant4 hadron generation with data from the interactions with beryllium nuclei of +8.9 GeV/c protons and pions and −8.0 GeV/c pions
Bolshakova, A. / Boyko, I. / Chelkov, G. / Dedovitch, D. / Elagin, A. / Gostkin, M. / Grishin, A. / Guskov, A. / Kroumchtein, Z. / Nefedov, Yu. et al. | 2008
333
First results from DAMA/LIBRA and the combined results with DAMA/NaI
Bernabei, R. / Belli, P. / Cappella, F. / Cerulli, R. / Dai, C. J. / d’Angelo, A. / He, H. L. / Incicchitti, A. / Kuang, H. H. / Ma, J. M. et al. | 2008
357
QCD sum rules analysis of the rare $B_{c}\rightarrow X\nu\bar{\nu}$ decays
Azizi, K. / Khosravi, R. / Bashiry, V. | 2008
357
QCD sum rules analysis of the rare Formula Not Shown decays
Azizi, K. / Khosravi, R. / Bashiry, V. | 2008
357
QCD sum rules analysis of the rare InlineEquation ID="IEq1"> ImageObject Color="BlackWhite" FileRef="100522008668ArticleIEq1.gif" Format="GIF" Rendition="HTML" Type="Linedraw"-> EquationSource Format="TEX">!(DATA(B{c}\rightarrow X\nu\bar{\nu}))> decays
Azizi, K. / Khosravi, R. / Bashiry, V. | 2008
371
Associated production of prompt photons and heavy quarks in off-shell gluon–gluon fusion
Baranov, S.P. / Lipatov, A.V. / Zotov, N.P. | 2008
379
Leptogenesis and dark matter unified in a non-SUSY model for neutrino masses
Suematsu, D. | 2008
389
SU L (4)×U(1) model for electroweak unification and sterile neutrinos
Riazuddin / Fayyazuddin | 2008
395
Diagonalization of the neutralino mass matrix and boson–neutralino interaction
Beylin, V.A. / Kuksa, V.I. / Pasechnik, R.S. / Vereshkov, G.M. | 2008
407
Perturbative photon fluxes generated by high-frequency gravitational waves and their physical effects
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425
Viscous dark cosmology with account of quantum effects
Brevik, I. / Gorbunova, O. | 2008
429
Interacting dark energy with inhomogeneous equation of state
Jamil, Mubasher / Rashid, Muneer Ahmad | 2008
435
HELAS and MadGraph/MadEvent with spin-2 particles
Hagiwara, K. / Kanzaki, J. / Li, Q. / Mawatari, K. | 2008
449
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