Search for Daily Modulation of MeV Dark Matter Signals with DAMIC-M
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A90263%2F24%3A00381466" target="_blank" >RIV/68407700:90263/24:00381466 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1103/PhysRevLett.132.101006" target="_blank" >https://doi.org/10.1103/PhysRevLett.132.101006</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1103/PhysRevLett.132.101006" target="_blank" >10.1103/PhysRevLett.132.101006</a>
Alternative languages
Result language
angličtina
Original language name
Search for Daily Modulation of MeV Dark Matter Signals with DAMIC-M
Original language description
Dark matter (DM) particles with sufficiently large cross sections may scatter as they travel through Earth's bulk. The corresponding changes in the DM flux give rise to a characteristic daily modulation signal in detectors sensitive to DM -electron interactions. Here, we report results obtained from the first underground operation of the DAMIC-M prototype detector searching for such a signal from DM with MeV-scale mass. A model -independent analysis finds no modulation in the rate of 1 e- events with sidereal period, where a DM signal would appear. We then use these data to place exclusion limits on DM in the mass range [0.53; 2.7] MeV/c2 interacting with electrons via a dark photon mediator. Taking advantage of the time -dependent signal we improve by similar to 2 orders of magnitude on our previous limit obtained from the total rate of 1 e- events, using the same dataset. This daily modulation search represents the current strongest limit on DM -electron scattering via ultralight mediators for DM masses around 1 MeV/c2.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10303 - Particles and field physics
Result continuities
Project
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Continuities
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Others
Publication year
2024
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Physical Review Letters
ISSN
0031-9007
e-ISSN
1079-7114
Volume of the periodical
132
Issue of the periodical within the volume
10
Country of publishing house
US - UNITED STATES
Number of pages
7
Pages from-to
"101006-1"-"101006-7"
UT code for WoS article
001199217000012
EID of the result in the Scopus database
2-s2.0-85187214730