On a further search for a yearly modulation of the rate in particle Dark Matter direct search

被引:259
作者
Bernabei, R [1 ]
Belli, P
Montecchia, F
Di Nicolantonio, W
Ignesti, G
Incicchitti, A
Prosperi, D
Dai, CJ
Ding, LK
Kuang, HH
Ma, JM
机构
[1] Univ Roma Tor Vergata, Dipartimento Fis, I-00133 Rome, Italy
[2] Ist Nazl Fis Nucl, Sez Roma 2, I-00133 Rome, Italy
[3] Univ Rome La Sapienza, Dipartimento Fis, I-00185 Rome, Italy
[4] Ist Nazl Fis Nucl, Sez Roma, I-00185 Rome, Italy
[5] Chinese Acad, IHEP, Beijing 100039, Peoples R China
关键词
D O I
10.1016/S0370-2693(99)00091-X
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
The results achieved with a statistics of 14962 kg . day, collected with the large mass highly radiopure DAMA NaI(TI) 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. (C) 1999 Elsevier Science B.V. All rights reserved.
引用
收藏
页码:448 / 455
页数:8
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