First Limits on Light Dark Matter Interactions in a Low Threshold Two-Channel Athermal Phonon Detector from the TESSERACT Collaboration

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A90263%2F25%3A00390818" target="_blank" >RIV/68407700:90263/25:00390818 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1103/hsrl-crvf" target="_blank" >https://doi.org/10.1103/hsrl-crvf</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1103/hsrl-crvf" target="_blank" >10.1103/hsrl-crvf</a>

Jazyk výsledku

angličtina

Název v původním jazyce

First Limits on Light Dark Matter Interactions in a Low Threshold Two-Channel Athermal Phonon Detector from the TESSERACT Collaboration

Popis výsledku v původním jazyce

We present results of a search for spin-independent dark matter-nucleus interactions in a 1 cm2 by 1 mm thick (0.233 g) high-resolution silicon athermal phonon detector operated above ground. For interactions in the substrate, this detector achieves an rms baseline energy resolution of 361.5(4) meV (statistical error), the best for any athermal phonon detector to date. With an exposure of 0.233 gx12 hours, we place the most stringent constraints on dark matter masses between 44 and 87 MeV/c2, with the lowest unexplored cross section of 4x10-32 cm2 at 87 MeV/c2. We employ a conservative salting technique to reach the lowest dark matter mass ever probed via direct detection experiment. This constraint is enabled by two-channel rejection of low energy backgrounds that are coupled to individual sensors.

Název v anglickém jazyce

First Limits on Light Dark Matter Interactions in a Low Threshold Two-Channel Athermal Phonon Detector from the TESSERACT Collaboration

Popis výsledku anglicky

We present results of a search for spin-independent dark matter-nucleus interactions in a 1 cm2 by 1 mm thick (0.233 g) high-resolution silicon athermal phonon detector operated above ground. For interactions in the substrate, this detector achieves an rms baseline energy resolution of 361.5(4) meV (statistical error), the best for any athermal phonon detector to date. With an exposure of 0.233 gx12 hours, we place the most stringent constraints on dark matter masses between 44 and 87 MeV/c2, with the lowest unexplored cross section of 4x10-32 cm2 at 87 MeV/c2. We employ a conservative salting technique to reach the lowest dark matter mass ever probed via direct detection experiment. This constraint is enabled by two-channel rejection of low energy backgrounds that are coupled to individual sensors.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10304 - Nuclear physics

Projekt

—

Návaznosti

—

Rok uplatnění

2025

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Physical Review Letters

ISSN

0031-9007

e-ISSN

1079-7114

Svazek periodika

135

Číslo periodika v rámci svazku

16

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

8

Strana od-do

"161002-1"-"161002-8"

Kód UT WoS článku

001603878300001

EID výsledku v databázi Scopus

2-s2.0-105020651975