Sensitivity of the CUORE detector to $14.4$ keV solar axions emitted by the M1 nuclear transition of${}^{57}$Fe

Abstract

In this paper we present a calculation of the sensitivity of the CUORE detector to the monoenergetic $14.4$ keV solar axions emitted by the M1 nuclear transition of${}^{57}$Fe in the Sun and detected by inverse coherent Bragg-Primakoff conversion in single-crystal $Te{O}_2$ bolometers. The expected counting rate is calculated using density functional theory for the electron charge density of $Te{O}_2$ and realistic background and energy resolution of CUORE. Monte Carlo simulations for $5$ y $\times$ $741$ kg=$3705-$kg$\cdot$y of exposure are analyzed using time correlation of individual events with the theoretical time-dependent counting rate. We find an expected model-independent limit on the product of the axion-photon coupling and the axion-nucleon coupling $g_{a\gamma \gamma }{g}_{aN}^{\text{eff}}<1.105\times 10^{-16}$ /GeV for axion masses less than 500 eV with $95\%$ confidence level.