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EXCESS workshop: Descriptions of rising low-energy spectra


Adari, P; Aguliar-Arevalo, A; Amidei, Dante; et al; Kilmister, Ben; Lee, Steven J (2022). EXCESS workshop: Descriptions of rising low-energy spectra. SciPost Physics Proceedings:9.001.

Abstract

Many low-threshold experiments observe sharply rising event rates of yet unknown origins below a few hundred eV, and larger than expected from known backgrounds. Due to the significant impact of this excess on the dark matter or neutrino sensitivity of these experiments, a collective effort has been started to share the knowledge about the individual observations. For this, the EXCESS Workshop was initiated. In its first iteration in June 2021, ten rare event search collaborations contributed to this initiative via talks and discussions. The contributing collaborations were CONNIE, CRESST, DAMIC, EDELWEISS, MINER, NEWS-G, NUCLEUS, RICOCHET, SENSEI and SuperCDMS. They presented data about their observed energy spectra and known backgrounds together with details about the respective measurements. In this paper, we summarize the presented information and give a comprehensive overview of the similarities and differences between the distinct measurements. The provided data is furthermore publicly available on the workshop's data repository together with a plotting tool for visualization.

Abstract

Many low-threshold experiments observe sharply rising event rates of yet unknown origins below a few hundred eV, and larger than expected from known backgrounds. Due to the significant impact of this excess on the dark matter or neutrino sensitivity of these experiments, a collective effort has been started to share the knowledge about the individual observations. For this, the EXCESS Workshop was initiated. In its first iteration in June 2021, ten rare event search collaborations contributed to this initiative via talks and discussions. The contributing collaborations were CONNIE, CRESST, DAMIC, EDELWEISS, MINER, NEWS-G, NUCLEUS, RICOCHET, SENSEI and SuperCDMS. They presented data about their observed energy spectra and known backgrounds together with details about the respective measurements. In this paper, we summarize the presented information and give a comprehensive overview of the similarities and differences between the distinct measurements. The provided data is furthermore publicly available on the workshop's data repository together with a plotting tool for visualization.

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Additional indexing

Item Type:Journal Article, not_refereed, original work
Communities & Collections:07 Faculty of Science > Physics Institute
Dewey Decimal Classification:530 Physics
Uncontrolled Keywords:General Medicine, General Chemistry
Language:English
Date:9 August 2022
Deposited On:04 Jan 2023 16:18
Last Modified:05 Jan 2023 09:42
Publisher:SciPost
ISSN:2666-4003
OA Status:Gold
Free access at:Publisher DOI. An embargo period may apply.
Publisher DOI:https://doi.org/10.21468/scipostphysproc.9.001
Project Information:
  • : FunderH2020
  • : Grant ID682676
  • : Project TitleLDMThExp - Going Beyond the WIMP: From Theory to Detection of Light Dark Matter
  • : FunderH2020
  • : Grant ID838537
  • : Project TitleSELENDIS - SELENDIS: A novel detection strategy to discover light Dark Matter
  • : FunderH2020
  • : Grant ID841261
  • : Project TitleDarkSphere - Search for light Dark Matter with a Spherical Proportional Counter
  • : FunderH2020
  • : Grant ID895168
  • : Project TitleneutronSPHERE - Neutron Spectroscopy with a Spherical Proportional Counter for precision measurements in deep-underground laboratories
  • : FunderH2020
  • : Grant ID679921
  • : Project TitleCHEMCHECK - CHECKPOINTS IN CHECK: Novel Chemical Toolbox for Local Cancer Immunotherapy
  • Content: Published Version
  • Language: English
  • Licence: Creative Commons: Attribution 4.0 International (CC BY 4.0)