A method to define the energy threshold depending on noise level for rare event searches

TL;DR

This paper introduces a method to determine the optimal energy threshold for rare event detectors based on noise levels, enhancing detection sensitivity in dark matter and neutrino experiments.

Contribution

A novel approach to quantify the lowest trigger threshold considering noise, validated with experimental and simulated data.

Findings

Effective threshold determination method demonstrated

Model validated with real and simulated data

Potential to improve detector sensitivity

Abstract

Solid state detectors and cryogenic detectors are widely employed in rare event searches, such as direct Dark Matter detection or Coherent Neutrino Nucleus Scattering experiments. The excellent sensitivity and, consequently, their low energy thresholds are among the most appealing features of such detectors. We present a method to quantify the lowest trigger threshold achievable as a function of the acceptable amount of noise events triggered for the physics case under investigation. We then apply this novel method to existing experimental and simulated data to validate the model we presented.