A comparison between the low-energy spectra from CoGeNT and CDMS

TL;DR

This paper compares the low-energy nuclear recoil spectra from CoGeNT and CDMS germanium detectors, finding a suggestive agreement despite different background rejection methods, which could impact dark matter search interpretations.

Contribution

It provides a direct spectral comparison between CoGeNT and CDMS detectors, highlighting potential similarities in their low-energy signals and uncertainties involved.

Findings

Suggestive agreement between spectra from both detectors

Differences in background cut orthogonality acknowledged

Implications for dark matter detection analyses

Abstract

A side-to-side comparison is established between the nuclear recoil energy spectrum from CDMS germanium bolometers and its low-energy equivalent for events in the inner bulk volume of a CoGeNT germanium diode. Acknowledging the orthogonality of the background cuts possible with each type of detector and following an examination of the uncertainties in these searches, a suggestive agreement between these spectra is observed.