F. De Brienne

Light dark matter constraints from SuperCDMS HVeV detectors operated underground with an anticoincidence event selection

M. F. Albakry, I. Alkhatib, David Alonso-González, D. W. P. Amaral et autres

This article presents constraints on dark-matter-electron interactions obtained from the first underground data-taking campaign with multiple SuperCDMS HVeV detectors operated in the same housing. An exposure of 7.63 g − days is used to set upper limits on the dark-matter-electron scattering cross …

ca, us, es, gb, mx, in, ph, de, ae (code pays fourni par la source)

First Measurement of the Nuclear-Recoil Ionization Yield in Silicon at 100 eV

M. F. Albakry, I. Alkhatib, Del Alonso, D. W. P. Amaral et autres

We measured the nuclear-recoil ionization yield in silicon with a cryogenic phonon-sensitive gram-scale detector. Neutrons from a monoenergetic beam scatter off of the silicon nuclei at angles corresponding to energy depositions from 4 keV down to 100 eV, the lowest energy probed …

ca, es, gb, us, in, de, ae (code pays fourni par la source)

Investigating the sources of low-energy events in a SuperCDMS-HVeV detector

M. F. Albakry, I. Alkhatib, D. W. P. Amaral, T. Aralis et autres

Recent experiments searching for $\mathrm{sub}\text{\ensuremath{-}}\mathrm{GeV}/{c}^{2}$ dark matter have observed event excesses close to their respective energy thresholds. Although specific to the individual technologies, the measured excess event rates have been consistently reported at or below event energies of a few-hundred eV, or …

ca, gb, us, in, es, de (code pays fourni par la source)

Ionization yield measurement in a germanium CDMSlite detector using photo-neutron sources

M. F. Albakry, I. Alkhatib, D. W. P. Amaral, T. Aralis et autres

Two photo-neutron sources, $^{88}\mathrm{Y}$$^{9}\mathrm{Be}$ and $^{124}\mathrm{Sb}$$^{9}\mathrm{Be}$, have been used to investigate the ionization yield of nuclear recoils in the CDMSlite germanium detectors by the SuperCDMS collaboration. This work evaluates the yield for nuclear recoil energies between 1 and 7 keV at a …

ca, gb, us, in, es, de (code pays fourni par la source)

A Search for Low-mass Dark Matter via Bremsstrahlung Radiation and the Migdal Effect in SuperCDMS

SuperCDMS Collaboration, Musaab Al-Bakry, I. Alkhatib, Dorian Praia Amaral et autres

In this paper, we present a re-analysis of SuperCDMS data using a profile likelihood approach to search for sub-GeV dark matter particles (DM) through two inelastic scattering channels: bremsstrahlung radiation and the Migdal effect. By considering possible inelastic scattering channels, experimental sensitivity …

Constraints on Lightly Ionizing Particles from CDMSlite

I. Alkhatib, D. W. P. Amaral, T. Aralis, T. Aramaki et autres

The Cryogenic Dark Matter Search low ionization threshold experiment (CDMSlite) achieved efficient detection of very small recoil energies in its germanium target, resulting in sensitivity to lightly ionizing particles (LIPs) in a previously unexplored region of charge, mass, and velocity parameter space. …

ca, gb, us, in, es, de (code pays fourni par la source)

Light Dark Matter Search with a High-Resolution Athermal Phonon Detector Operated above Ground

I. Alkhatib, D. W. P. Amaral, T. Aralis, T. Aramaki et autres

We present limits on spin-independent dark matter-nucleon interactions using a 10.6 g Si athermal phonon detector with a baseline energy resolution of ${\ensuremath{\sigma}}_{E}=3.86\ifmmode\pm\else\textpm\fi{}0.04(\mathrm{stat}{)}_{\ensuremath{-}0.00}^{+0.19}(\mathrm{syst})\text{ }\text{ }\mathrm{eV}$. This exclusion analysis sets the most stringent dark matter-nucleon scattering cross-section limits achieved by a cryogenic detector …

ca, gb, us, in, es, de (code pays fourni par la source)

Constraints on low-mass, relic dark matter candidates from a surface-operated SuperCDMS single-charge sensitive detector

D. W. P. Amaral, T. Aralis, T. Aramaki, I. J. Arnquist et autres

This article presents an analysis and the resulting limits on light dark matter inelastically scattering off of electrons, and on dark photon and axionlike particle absorption, using a second-generation SuperCDMS high-voltage eV-resolution detector. The 0.93 g Si detector achieved a 3 eV …

gb, us, in, ca, es (code pays fourni par la source)

Calibration d’un détecteur HVeV en utilisant des neutrons de 56 keV

F. De Brienne

L'un des grands mystères de la physique qu'il nous reste à élucider est d'identifier de quoi est composée la matière sombre. L'expérience SuperCDMS a décidé de se pencher sur la question il y a plus de 20 ans. Nous utilisons des détecteurs …

Constraints on dark photons and axionlike particles from the SuperCDMS Soudan experiment

T. Aralis, T. Aramaki, I. J. Arnquist, E. Azadbakht et autres

We present an analysis of electron recoils in cryogenic germanium detectors operated during the SuperCDMS Soudan experiment. The data are used to set new constraints on the axioelectric coupling of axionlike particles and the kinetic mixing parameter of dark photons, assuming the …

us, in, ca, gb, es (code pays fourni par la source)

Search for low-mass dark matter with CDMSlite using a profile likelihood fit

R. Agnese, T. Aralis, T. Aramaki, I. J. Arnquist et autres

The Cryogenic Dark Matter Search low ionization threshold experiment (CDMSlite) searches for interactions between dark matter particles and germanium nuclei in cryogenic detectors. The experiment has achieved a low energy threshold with improved sensitivity to low-mass ($<10\text{ }\text{ }\mathrm{GeV}/{c}^{2}$) dark matter particles. …

us, in, gb, es, ca (code pays fourni par la source)