The process of neutrinoless double beta decay (0νββ) plays a crucial role in nuclear and particle physics. While several feasible candidate isotopes are available and a multitude of experimental efforts are ongoing all over the world, the decay has eluded detection. The half life measured in 0νββ experiments is converted into effective neutrino mass, where one of the main sources of...
The MONUMENT experiment investigates ordinary muon capture on isotopes relevant for 0$\nu\beta\beta$ decay. Data were collected using two parallel acquisition systems, with this contribution focusing on ALPACA—an in-house developed system with fully offline analysis. The analysis chain comprises energy and time reconstruction, detector calibration, quality cuts, efficiency determination, and...
Experiments searching for light dark matter or coherent elastic neutrino-nucleus scattering need to adopt detectors achieving very low energy thresholds, such as cryogenic phonon detectors. The phonon-mediated detection of silicon particle absorbers has been already proved with Kinetic Inductance Detectors, acting as phonon collectors and sensors at the same time.
We developed a first...
BULLKID is a cryogenic, solid-state detector designed for direct searches of particle Dark Matter candidates, with mass ≤ 1 GeV/$c^2$, and coherent neutrino-nucleus scattering. It is based on an array of dice carved in 5 mm thick crystals, sensed by phonon mediated Kinetic Inductance Detectors. In previous works, the array was calibrated with bursts of optical photons, which are absorbed in...
The First G-APD Cherenkov Telescope (FACT) is located at an altitude of 2200 meters a.s.l. on the island of La Palma. It was built to monitor bright blazars in the TeV energy range. In addition, FACT carries out follow-up observations of multi-wavelength and multi-messenger alerts. Its camera, which is based on silicon-based photosensors, allows observations during strong moonlight. The...
We present the Taylor expansion formalism for describing the two-neutrino double-beta ($2\nu\beta\beta$) decay. In predicting the $2\nu\beta\beta$ decay spectra, we include the radiative and atomic exchange correction. We also investigate the impact of the electron phase shift on the angular correlation between the emitted electrons. Additionally, we examine the contribution of all s-wave...
KM3NeT (Kilometre Cube Neutrino Telescope) is the largest underwater observatory worldwide. It is composed of two detectors deployed in two sites of the Mediterranean Sea (ARCA in the Ionian Sea and ORCA in the Ligurian Sea), and it is designed to detect high-energy (> 100 GeV) neutrinos through the Cherenkov radiation. The reconstruction of the neutrino direction relies on the detection of...
Low-energy neutrino processes on nuclei are a fundamental tool for studying weak interactions and nuclear structure. The dominant process at these energies is Coherent and Elastic Neutrino-Nucleus Scattering (CE$\nu$NS), which was measured on argon in 2020 by the COHERENT collaboration. As well as this, inelastic neutrino interactions on nuclei can also occur, mediated by charged or neutral...
Elusive particles like low-energy neutrinos and dark matter candidates require extremely sensitive detectors to be revealed. In experiments probing nuclear recoils, induced by sub-GeV dark matter particles or CE$\nu$NS, a low energy threshold and minimal backgrounds are mandatory. For these purposes, an advanced offline analysis of triggered pulses from the detector stream can make a...
A novel functional form for fitting neutrino luminosities from
core-collapse supernovae was recently proposed by Lucente et al. (2024),
capturing the effects of convection inside the proto-neutron star (PNS)
through a power-law temporal decay. While this model accurately
describes the cooling phase, it does not account for the neutrino flux
during, approximately, the first second, which...
The high momentum transfer encountered in heavy ion Double Charge Exchange (DCE) reactions provides an ideal environment for studying correlation phenomena beyond mean-field in Nuclear Matrix Elements (NMEs). This investigation is of paramount interest for probing the nuclear counterpart of the elusive neutrinoless double beta (0νββ) decay. Currently, the NMEs for such a decay are embedded in...
Although the standard three-flavor neutrino framework has been firmly established, several experimental anomalies remain that cannot be explained within this model. One possible explanation involves extending the paradigm by introducing a light sterile neutrino - an SU(2) singlet that does not interact via the weak force. While this extension is theoretically well motivated, experimental...
The determination of the absolute neutrino mass scale remains a fundamental open question in particle physics, with profound implications for both the Standard Model and cosmology. The only model-independent method for measuring the neutrino mass relies on the kinematic analysis of beta decay or electron capture (EC) decay, assuming only momentum and energy conservation. Embedding the...
The study of neutrino interactions with matter has provided significant insights into the properties of neutrinos and the dynamics of weak interactions. One particularly intriguing puzzle is the so-called "Gallium Anomaly", observed in the GALLEX, SAGE, and more recently the BEST experiments, which measure the neutrino capture process on gallium,
νₑ + ⁷¹Ga → e⁻ + ⁷¹Ge, historically used for...
The NUMEN (NUclear Matrix Elements for Neutrinoless double beta decay) project, as well as the NURE (NUclear REactions for neutrinoless double beta decay) project, have recently been proposed at the INFN-LNS laboratory to study Heavy-Ion-induced Double Charge Exchange (HI-DCE) reactions to provide data-driven information on the neutrinoless double beta (0νββ)-decay nuclear matrix elements....
The coherent elastic neutrino-nucleus scattering (CEνNS) is a neutral-current weak interaction in which a low-energy neutrino (tens of MeV) scatters off a nucleus, producing a small nuclear recoil that is extremely challenging to detect. Due to the low energies involved, this process was experimentally observed only in 2017 by the COHERENT experiment. Its significance lies in the fact that its...
Over the last decade, searches for sub-GeV particle Dark Matter (DM) candidates have rapidly advanced. Light Dark Matter particles detection represents a challenge because it requires sensitivity to faint nuclear recoils and thus very low energy threshold ($\mathcal{O}(0.1)$ keV). At the same time, accessing lower cross-section ranges demands high-mass targets. The BULLKID-DM experiment aims...
Inverse beta decay (IBD) is a crucial process historically employed to study neutrinos.
For example, discrepancies between measured and expected IBD rates on (^{71}\text{Ga}), the so-called , suggest the possible existence of sterile neutrinos. A recent publication showed that the poorly known associated Nuclear Matrix Element (NME) can be extracted measuring the decay width from the Isobaric...
