Speaker
Description
The ANAIS-112 experiment operated 112.5 kg of NaI(Tl) detectors at the Canfranc Underground Laboratory (LSC) from August 2017 to January 2026 with the primary goal of performing a model-independent test of the annual modulation signal reported by DAMA/LIBRA. In addition to the modulation search, the ANAIS-112 dataset provides sensitivity to Weakly Interacting Massive Particles (WIMPs) through model-dependent analyses of the measured energy spectra.
In this work, we present a model-dependent interpretation of the ANAIS-112 data in terms of WIMP–nucleon interactions. The analysis is performed within the framework of the Standard Halo Model and considers both spin-independent (SI) and spin-dependent (SD) couplings, including proton-only and neutron-only scenarios. Exclusion limits are derived in the WIMP mass–cross-section parameter space using the measured detector response and background model of ANAIS-112. Results highlight the role of the nuclear recoil quenching factor (QF) for NaI(Tl) scintillators. The study is presented using QF for sodium and iodine derived from dedicated onsite neutron calibration measurements, as well as under the hypothesis of experiment-independent quenching factors using the ones adopted by DAMA/LIBRA.
| Main Contribution topic | Direct detection |
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| Secondary contribution topic | Direct detection |