Final model independent result of DAMA/LIBRAhase1

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• 作者：R. Bernabei (1) (2)
  P. Belli (2)
  F. Cappella (3) (4)
  V. Caracciolo (5)
  S. Castellano (5)
  R. Cerulli (5)
  C. J. Dai (6)
  A. dngelo (3) (4)
  S. dngelo (1) (2)
  A. Di Marco (1) (2)
  H. L. He (6)
  A. Incicchitti (4)
  H. H. Kuang (6)
  X. H. Ma (6)
  F. Montecchia (2) (7)
  D. Prosperi (3) (4)
  X. D. Sheng (6)
  R. G. Wang (6)
  Z. P. Ye (6) (8)
  
• 刊名：The European Physical Journal C - Particles and Fields
• 出版年：2013
• 出版时间：December 2013
• 年：2013
• 卷：73
• 期：12
• 全文大小：
• 作者单位：R. Bernabei (1) (2)
  P. Belli (2)
  F. Cappella (3) (4)
  V. Caracciolo (5)
  S. Castellano (5)
  R. Cerulli (5)
  C. J. Dai (6)
  A. dngelo (3) (4)
  S. dngelo (1) (2)
  A. Di Marco (1) (2)
  H. L. He (6)
  A. Incicchitti (4)
  H. H. Kuang (6)
  X. H. Ma (6)
  F. Montecchia (2) (7)
  D. Prosperi (3) (4)
  X. D. Sheng (6)
  R. G. Wang (6)
  Z. P. Ye (6) (8)
  
  1. Dipartimento di Fisica, Universitdi Roma or Vergata 00133, Rome, Italy
  2. INFN, sez. Roma or Vergata 00133, Rome, Italy
  3. Dipartimento di Fisica, Universitdi Roma a Sapienza 00185, Rome, Italy
  4. sez. Roma, INFN, 00185, Rome, Italy
  5. Laboratori Nazionali del Gran Sasso, INFN, Assergi, Italy
  6. IHEP, Chinese Academy, P.O. Box 918/3, Beijing, 100039, China
  7. Dipartimento di Ingegneria Civile e Ingegneria Informatica, Universitdi Roma or Vergata Rome, Italy
  8. University of Jing Gangshan, Jiangxi, China
  
• ISSN：1434-6052

文摘

The results obtained with the total exposure of 1.04 ton yr collected by DAMA/LIBRAhase1 deep underground at the Gran Sasso National Laboratory (LNGS) of the I.N.F.N. during 7 annual cycles (i.e.adding a further 0.17tonyr exposure) are presented. The DAMA/LIBRAhase1 data give evidence for the presence of Dark Matter (DM) particles in the galactic halo, on the basis of the exploited model independent DM annual modulation signature by using highly radio-pure NaI(Tl) target, at 7.5C.L. Including also the first generation DAMA/NaI experiment (cumulative exposure 1.33 ton yr, corresponding to 14 annual cycles), the C.L. is 9.3and the modulation amplitude of the single-hit events in the (2) keV energy interval is: (0.0112.0012) cpd/kg/keV; the measured phase is (144) days and the measured period is (0.998.002)yr, values well in agreement with those expected for DM particles. No systematic or side reaction able to mimic the exploited DM signature has been found or suggested by anyone over more than a decade.