On a further search for a yearly modulation of the rate in particle Dark Matter direct search |
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Authors: | R. Bernabei P. Belli F. Montecchia W. Di Nicolantonio G. Ignesti A. Incicchitti D. Prosperi C. J. Dai L. K. Ding H. H. Kuang J. M. Ma |
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Affiliation: | a Dip. di Fisica, Universitá di Roma “Tor Vergat” and INFN, sez. Roma2, I-00133 Rome, Italy;b Dip. di Fisica, Universitá di Roma “La Sapienza” and INFN, sez. Roma, I-00185 Rome, Italy;c IHEP, Chinese Academy, P.O. Box 918/3, Beijing 100039, China |
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Abstract: | The results achieved with a statistics of 14962 kg·day, collected with the large mass highly radiopure DAMA NaI(Tl) set-up, are described and investigated in terms of WIMP annual modulation signature. A maximum likelihood analysis of these data, combined with the statistics of 4549 kg·day previously published (total statistics of 19511 kg·day), favours the hypothesis of presence of an annual modulation at 99.6% C.L. |
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