Constraints on cosmic-ray boosted dark matter in CDEX-10

Zhan-Hong Lei (School of Physics, Sun Yat-Sen University, China) ; Jian Tang (School of Physics, Sun Yat-Sen University, China) ; Bing-Long Zhang (School of Physics, Sun Yat-Sen University, China)

Dark matter (DM) direct detection experiments have been setting strong limits on the DM–nucleon scattering cross section at the DM mass above a few GeV, but leave large parameter spaces unexplored in the low mass region. DM is likely to be scattered and boosted by relativistic cosmic rays in the expanding universe if it can generate nuclear recoils in direct detection experiments to offer observable signals. Since low energy threshold detectors using Germanium have provided good constraints on ordinary halo GeV-scale DM, it is necessary to re-analyze 102.8 kg $ \times $ day data in the CDEX-10 experiment assuming that DM is boosted by cosmic rays. For the DM mass range 1 keV $ \times $ 1 MeV and the effective distance within 1 kpc, we reach an almost flat floor limit at $ \times $ cm$^{2}$ for the spin-independent DM–nucleon scattering cross section, at a 90% confidence level. The CDEX-10 result is able to close the gap unambiguously in the parameter space between the MiniBooNE and XENON1T constraints, which were partially hindered by the Earth attenuation effect. We also quantitatively calculate the expected neutrino floor on searching for CRBDM in future direct detection experiments using Germanium.

{
  "_oai": {
    "updated": "2023-06-06T03:31:23Z", 
    "id": "oai:repo.scoap3.org:71640", 
    "sets": [
      "CPC"
    ]
  }, 
  "authors": [
    {
      "affiliations": [
        {
          "country": "China", 
          "value": "School of Physics, Sun Yat-Sen University, China"
        }
      ], 
      "surname": "Lei", 
      "email": "leizhh3@mail2.sysu.edu.cn", 
      "full_name": "Lei,Zhan-Hong", 
      "given_names": "Zhan-Hong"
    }, 
    {
      "affiliations": [
        {
          "country": "China", 
          "value": "School of Physics, Sun Yat-Sen University, China"
        }
      ], 
      "surname": "Tang", 
      "email": "tangjian5@mail.sysu.edu.cn", 
      "full_name": "Tang,Jian", 
      "given_names": "Jian"
    }, 
    {
      "affiliations": [
        {
          "country": "China", 
          "value": "School of Physics, Sun Yat-Sen University, China"
        }
      ], 
      "surname": "Zhang", 
      "email": "zhangblong@mail2.sysu.edu.cn, Corresponding author", 
      "full_name": "Zhang,Bing-Long", 
      "given_names": "Bing-Long"
    }
  ], 
  "titles": [
    {
      "source": "IOP", 
      "title": "Constraints on cosmic-ray boosted dark matter in CDEX-10  "
    }
  ], 
  "dois": [
    {
      "value": "10.1088/1674-1137/ac68da"
    }
  ], 
  "publication_info": [
    {
      "journal_title": "Chinese Physics C", 
      "material": "article", 
      "journal_volume": "46", 
      "artid": "085103", 
      "year": 2022, 
      "journal_issue": "8"
    }
  ], 
  "$schema": "http://repo.scoap3.org/schemas/hep.json", 
  "acquisition_source": {
    "date": "2023-06-06T03:30:53.505368", 
    "source": "IOP", 
    "method": "IOP", 
    "submission_number": "6ab8f560041a11ee8e62c23b20d38f61"
  }, 
  "page_nr": [
    11
  ], 
  "license": [
    {
      "url": "http://creativecommons.org/licenses/by/3.0/", 
      "license": "CC-BY-3.0"
    }
  ], 
  "copyright": [
    {
      "statement": "\u00a9 2022 Chinese Physical Society and the Institute of High Energy Physics of the Chinese Academy of Sciences and the Institute of Modern Physics of the Chinese Academy of Sciences and IOP Publishing Ltd", 
      "year": "2022"
    }
  ], 
  "control_number": "71640", 
  "record_creation_date": "2022-07-29T03:30:25.866475", 
  "_files": [
    {
      "checksum": "md5:7d96843c65a79c64607eb53dc54d640e", 
      "filetype": "xml", 
      "bucket": "ad41e157-fa21-4764-809a-a4542491eca2", 
      "version_id": "191f6c94-f293-4a04-afeb-df2b5f6453c1", 
      "key": "10.1088/1674-1137/ac68da.xml", 
      "size": 153755
    }, 
    {
      "checksum": "md5:30f49eeb19d538f88f8be0d14e238e05", 
      "filetype": "pdf", 
      "bucket": "ad41e157-fa21-4764-809a-a4542491eca2", 
      "version_id": "89b1b991-2d84-473a-8332-530edc164bf7", 
      "key": "10.1088/1674-1137/ac68da.pdf", 
      "size": 2819216
    }
  ], 
  "collections": [
    {
      "primary": "Chinese Physics C"
    }
  ], 
  "abstracts": [
    {
      "source": "IOP", 
      "value": "Dark matter (DM) direct detection experiments have been setting strong limits on the DM\u2013nucleon scattering cross section at the DM mass above a few GeV, but leave large parameter spaces unexplored in the low mass region. DM is likely to be scattered and boosted by relativistic cosmic rays in the expanding universe if it can generate nuclear recoils in direct detection experiments to offer observable signals. Since low energy threshold detectors using Germanium have provided good constraints on ordinary halo GeV-scale DM, it is necessary to re-analyze 102.8 kg   $ \\times $  day data in the CDEX-10 experiment assuming that DM is boosted by cosmic rays. For the DM mass range 1 keV   $ \\times $   1 MeV and the effective distance within 1 kpc, we reach an almost flat floor limit at   $ \\times $   cm$^{2}$ for the spin-independent DM\u2013nucleon scattering cross section, at a 90% confidence level. The CDEX-10 result is able to close the gap unambiguously in the parameter space between the MiniBooNE and XENON1T constraints, which were partially hindered by the Earth attenuation effect. We also quantitatively calculate the expected neutrino floor on searching for CRBDM in future direct detection experiments using Germanium."
    }
  ], 
  "imprints": [
    {
      "date": "2022-08-01", 
      "publisher": "IOP"
    }
  ]
}
Published on:
01 August 2022
Publisher:
IOP
Published in:
Chinese Physics C , Volume 46 (2022)
Issue 8
Article ID: 085103
DOI:
https://doi.org/10.1088/1674-1137/ac68da
Copyrights:
© 2022 Chinese Physical Society and the Institute of High Energy Physics of the Chinese Academy of Sciences and the Institute of Modern Physics of the Chinese Academy of Sciences and IOP Publishing Ltd
Licence:
CC-BY-3.0

Fulltext files: