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Sub-GeV Dark Matter Searches with EDELWEISS: New results and prospects
by Hugues Lattaud on behalf of the EDELWEISS collaboration
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Submission summary
| Authors (as registered SciPost users): | Hugues Lattaud |
| Submission information | |
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| Preprint Link: | scipost_202210_00038v1 (pdf) |
| Date submitted: | 2022-10-04 11:01 |
| Submitted by: | Lattaud, Hugues |
| Submitted to: | SciPost Physics Proceedings |
| Proceedings issue: | 14th International Conference on Identification of Dark Matter (IDM2022) |
| Ontological classification | |
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| Academic field: | Physics |
| Specialties: |
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| Approach: | Experimental |
Abstract
The Edelweiss collaboration performs light Dark Matter (DM) particles searches with germanium bolometer collecting charge and phonon signals. Thanks to the Neganov-Trofimov-Luke (NTL) effect, a RMS resolution of 4.46 electron-hole pairs was obtained on a massive (200g) germanium detector instrumented with a NbSi Transition Edge Sensor (TES) operated underground at the Laboratoire Souterrain de Modane (LSM). This sensitivity made possible a search for WIMP using the Migdal effect down to 32 MeV/C² and exclude cross-sections down to 10e-29 cm². It is the first measurement in cryogenic germanium with such thermal sensor, proving the high relevance of this technology. Furthermore, such TES have shown sensitivity to out-of-equilibrium phonons, paving the way for EDELWEISS new experience CRYOSEL. This is an important step in the development of Ge detectors with improved performance in the context of the EDELWEISS-SubGeV program.
Current status:
Reports on this Submission
Anonymous Report 1 on 2022-11-6 (Invited Report)
- Cite as: Anonymous, Report on arXiv:scipost_202210_00038v1, delivered 2022-11-06, doi: 10.21468/SciPost.Report.6058
Weaknesses
Exceed the allowed length.
Report
In this proceeding author is describing a new result in searches of light Dark Matter down to32MeV/c^2 using Migdal effect. As well the prospects and plans for future improvements and searches. The manuscript is clearly written and well organised. I recommend the manuscript for publication after some minor corrections.
Requested changes
- Fig. 2, you name the limit “nu-cleus 2017” and give reference to CRESST. Please give the correct name. Ref. 23 “CEDEX” - “CDEX” ?
- p.2 can you please indicate the activity of strong AmBe source?
- Fig.4 please add references as for Fig.2
- some typos present
Author: Hugues Lattaud on 2022-11-08 [id 2993]
(in reply to Report 1 on 2022-11-06)Dear reviewer,
-For nu-cleus 2017, the results presented in Fig 2 correspond to the limit achieved with nu-cleus prototype detector, thus there is no mistake in the labelling and the proper paper is cited.
-Unfortunately, I don't have the numbers for the activity of the source.
-I'll add the references
Best regards
Anonymous on 2022-11-08 [id 2994]
(in reply to Hugues Lattaud on 2022-11-08 [id 2993])Dear author,
thank you for the reply. Please submit an updated manuscript.
Best regards.