CONNIE's first Skipper-CCD run at Angra-2 yields no CEνNS excess, comparable prior limits on neutrino rates, improved bounds on light vector mediators, and record surface DM-electron limits via diurnal modulation.
Single-electron and single-photon sensitivity with a silicon Skipper CCD
3 Pith papers cite this work. Polarity classification is still indexing.
3
Pith papers citing it
abstract
We have developed a non-destructive readout system that uses a floating-gate amplifier on a thick, fully depleted charge coupled device (CCD) to achieve ultra-low readout noise of 0.068 e- rms/pix. This is the first time that discrete sub-electron readout noise has been achieved reproducibly over millions of pixels on a stable, large-area detector. This allows the precise counting of the number of electrons in each pixel, ranging from pixels with 0 electrons to more than 1500 electrons. The resulting CCD detector is thus an ultra-sensitive calorimeter. It is also capable of counting single photons in the optical and near-infrared regime. Implementing this innovative non-destructive readout system has a negligible impact on CCD design and fabrication, and there are nearly immediate scientific applications. As a particle detector, this CCD will have unprecedented sensitivity to low-mass dark matter particles and coherent neutrino-nucleus scattering, while astronomical applications include future direct imaging and spectroscopy of exoplanets.
citation-role summary
background 1
citation-polarity summary
roles
background 1polarities
background 1representative citing papers
Thermal dark-photon emission from Earth's core, recast onto SENSEI/DAMIC-M bounds, already constrains new ε parameter space; Oscura could improve by 2–3 orders of magnitude near 10^{-4} eV.
The paper surveys theoretical motivations, experimental searches, and bounds on the dark photon as a kinetically mixed gauge boson from a dark sector, covering both massive and massless cases along with related milli-charged fermion constraints.
citing papers explorer
-
Searches for CE{\nu}NS and Physics beyond the Standard Model using Skipper-CCDs at CONNIE
CONNIE's first Skipper-CCD run at Angra-2 yields no CEνNS excess, comparable prior limits on neutrino rates, improved bounds on light vector mediators, and record surface DM-electron limits via diurnal modulation.
-
Thermal Emission of Dark Photons from Earth's Core
Thermal dark-photon emission from Earth's core, recast onto SENSEI/DAMIC-M bounds, already constrains new ε parameter space; Oscura could improve by 2–3 orders of magnitude near 10^{-4} eV.
-
The Dark Photon
The paper surveys theoretical motivations, experimental searches, and bounds on the dark photon as a kinetically mixed gauge boson from a dark sector, covering both massive and massless cases along with related milli-charged fermion constraints.