Search for Daily Modulation of MeV Dark Matter Signals with DAMIC-M
Identifikátory výsledku
Kód výsledku v 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>
Výsledek na webu
<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>
Alternativní jazyky
Jazyk výsledku
angličtina
Název v původním jazyce
Search for Daily Modulation of MeV Dark Matter Signals with DAMIC-M
Popis výsledku v původním jazyce
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.
Název v anglickém jazyce
Search for Daily Modulation of MeV Dark Matter Signals with DAMIC-M
Popis výsledku anglicky
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.
Klasifikace
Druh
J<sub>imp</sub> - Článek v periodiku v databázi Web of Science
CEP obor
—
OECD FORD obor
10303 - Particles and field physics
Návaznosti výsledku
Projekt
—
Návaznosti
—
Ostatní
Rok uplatnění
2024
Kód důvěrnosti údajů
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Údaje specifické pro druh výsledku
Název periodika
Physical Review Letters
ISSN
0031-9007
e-ISSN
1079-7114
Svazek periodika
132
Číslo periodika v rámci svazku
10
Stát vydavatele periodika
US - Spojené státy americké
Počet stran výsledku
7
Strana od-do
"101006-1"-"101006-7"
Kód UT WoS článku
001199217000012
EID výsledku v databázi Scopus
2-s2.0-85187214730