Theoretical Estimate of the Sensitivity of the CUORE Detector to Solar Axions

TL;DR

This paper provides a theoretical estimate of CUORE's sensitivity to solar axions, calculating expected limits on axion-photon coupling using detailed modeling of the detector's response and background over a multi-year exposure.

Contribution

It introduces a comprehensive theoretical framework for assessing CUORE's potential to detect solar axions via the inverse Bragg-Primakoff process, including detailed density functional theory calculations.

Findings

Expected limit on axion-photon coupling: $g_{a o ext{gamma}}<3.83\times 10^{-10}~GeV^{-1}$

Sensitivity analysis for axion masses less than 100 eV

Monte Carlo simulations over 5 years of data exposure

Abstract

In this paper we calculate the potential sensitivity of the CUORE detector to axions produced in the Sun through the Primakoff process and detected by the inverse coherent Bragg-Primakoff process. The conversion rate is calculated using density functional theory for the electron density and realistic expectations for the energy resolution and background of CUORE. Monte Carlo calculations for $5~$y$\times741~$kg=$3705~$kg y of exposure are analyzed using time correlation of individual events with the theoretical time-dependent counting rate and lead to an expected limit on the axion-photon coupling $g_{a\gamma\gamma}<3.83\times 10^{-10}~GeV^{-1}$ for axion masses less than $100$ eV.