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Dark Matter: DAMA/LIBRA and its perspectives

by R. Bernabei, P. Belli, F. Cappella, V. Caracciolo, R. Cerulli, C.J. Dai, A. d’Angelo, A. Incicchitti, A. Leoncini, X.H. Ma, V. Merlo, F. Montecchia, X.D. Sheng, Z.P. Ye

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Submission summary

Authors (as registered SciPost users): Pierluigi Belli
Submission information
Preprint Link: scipost_202208_00088v1  (pdf)
Date accepted: 2022-10-18
Date submitted: 2022-08-30 16:14
Submitted by: Belli, Pierluigi
Submitted to: SciPost Physics Proceedings
Proceedings issue: 14th International Conference on Identification of Dark Matter (IDM2022)
Ontological classification
Academic field: Physics
  • Gravitation, Cosmology and Astroparticle Physics
  • High-Energy Physics - Experiment
Approach: Experimental


The long-standing model-independent annual modulation effect measured by DAMA deep underground at Gran Sasso Laboratory with different experimental configurations is summarized and perspectives will be highlighted. DAMA/LIBRA–phase2 set-up, ≃ 250 kg highly radio-pure NaI(Tl) confirms the evidence of a signal that meets all the requirements of the model independent Dark Matter annual modulation signature at high C.L.; the full exposure is 2.86 ton × yr over 22 annual cycles. The experiment is currently collecting data in the DAMA/LIBRA–phase2 empowered configuration with an even lower software energy threshold. Other recent claims are shortly commented.

Published as SciPost Phys. Proc. 12, 025 (2023)

Reports on this Submission

Anonymous Report 2 on 2022-10-3 (Invited Report)


The last issue is clarified by authors.

  • validity: -
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Anonymous Report 1 on 2022-10-2 (Invited Report)

  • Cite as: Anonymous, Report on arXiv:scipost_202208_00088v1, delivered 2022-10-02, doi: 10.21468/SciPost.Report.5814


In this proceeding authors present measurements of Dark Matter annual modulation signature with a high C.L. over 22 annual cycles. This is a second phase of the experiment with lower software threshold. They also show perspectives and comment on other claims.
The manuscript is clearly written and well organised. It is also suitably formatted for publication.
I recommend the manuscript for publication after verification of Fig.2 where authors claimed to add a new point 0.75keV (I see at 1keV). Can authors explain this?

Requested changes

Verification of Fig.2 where authors claimed to add a new point 0.75keV (I see at 1keV). Can authors explain this?

  • validity: -
  • significance: -
  • originality: -
  • clarity: -
  • formatting: -
  • grammar: -

Author:  Pierluigi Belli  on 2022-10-03  [id 2866]

(in reply to Report 1 on 2022-10-02)

Many thanks to the Anonymous Referee. The first data point in fig. 2 is at 0.75-1.00 keV. And the energy bin is shorter than the others of 0.5 keV. To be clear, fig.2 shows three data points below 2 keV, whose intervals are: 0.75-1.00 keV; 1.0-1.5 keV; 1.5-2.0 keV.
This new data point has been added after a dedicated analysis for lowering the software energy threshold in the already-acquired data by using the same technique as before with dedicated studies on the efficiencies. The error of this point is rather large and thus this led to the necessity to improve the experimental set-up, as indeed done at the end of 2021.

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Anonymous on 2022-09-28  [id 2859]

The new version of the paper with reduced numebr of pages is in attachment. Best regards, Pierluigi Belli