The low-energy QCD, the theory within the Standard Model describing the strong interaction, is still missing fundamental experimental results to achieve a breakthrough in its understanding. Among these, the low-energy kaon-nucleon/nuclei interaction studies are playing a key-role.
Combining the excellent quality of the low-energy kaon beam delivered by the DANE collider of INFN-LNF with new...
In my talk I will highlight the background and achievements, as also some prospects, of the NEPTUN (NEutrino Properties Through Use of Nuclei) project's first year. NEPTUN is a 3-year neutrino-related nuclear-physics project funded by the EU through the Romanian Ministry of Research, Innovation and Digitzation. I will discuss the problem of the effective value of the weak axial-vector coupling...
We reexamine one of the most promising candidates for determining the neutrino mass scale: the unique first forbidden $\beta$ transition from $^{187}$Re($5/2^+$) to $^{187}$Os($1/2^-$). With the lowest-known ground-state to ground-state $Q$-value for a $\beta$ transition at $2.4709$ keV, rhenium's $\beta$ decay can offer insights into the neutrino mass scale puzzle. However, understanding its...
We present the normalized distributions of released energy in electron capture (EC) decay as a method for determining the neutrino mass. Our calculations account for exchange and overlap corrections, shake-up and shake-off atomic effects, electron screening effects, and the intrinsic line-widths of Breit-Wigner resonances.
The wave functions of the electrons were computed using the...
The state-of-the-art value of the charged kaon mass is still less precise than the charged pion mass. Its value is important in the non-perturbative QCD, and it also important in a determination of systematic uncertainty of the D0-meson mass. Since there is a need and a possibility to improve the precision of this value, we will present ongoing analysis of feasibility measurement of X-rays...
High-precision X-ray spectroscopy of light kaonic atoms serves as a crucial method for exploring into low-energy QCD within the strangeness sector, allowing the determination of the antikaon-nucleon interaction at threshold without the need of extrapolation to zero energy The SIDDHARTA-2 collaboration is currently engaged in the complex task of measuring kaonic deuterium transitions to its...
Interstellar dust, a processor of stellar radiation, a gas coolant and a good interstellar medium (ISM) tracer, is formed out of elements mostly forged in stars. Its precise composition, grain size and distribution are essential for the galaxy attenuation curves, for the stellar or dust evolution models. Likewise, dust and star formation scaling relations are essential in studies of ISM...
In this talk we discuss binary particle-antiparticle atomic systems starting from the formulation (in $16\times 16$ matrix form) of the relevant 2-body Dirac-Coulomb Hamiltonian. Then, we apply the separation of the radial dependence from the angular-spin dependence of the Dirac-spinor components based on the conservation laws that must be full filled as: the well-defined charge-conjugation,...
SPADES (Spectra and Phase spAce factors in Double bEta decayS), a software package for theoretical double beta decay analysis, integrates RADIAL package and the DHFS method to compute electron wave functions accurately in complex atomic systems. Its user-friendly interface facilitates input of parameters for seamless computations. Researchers can compare spectra and phase space factors across...
Measurements of two- and multi-particle azimuthal correlations provide valuable information on the properties of the system created in collisions of hadrons and nuclei at high energy. In this talk, the ALICE results for inclusive and identified particle azimuthal correlations are reported in different collision systems after a brief introduction of the concepts of a heavy-ion collision.
Ultra-high energy cosmic rays (UHECRs) are the most energetic, rare and mysterious particles in the Universe. Although they are known to be of extragalactic origin, their actual sources remain a subject of debate yet. Modern large-scale experiments are indirectly observing them on the ground, and are further expanded to increase data statistics with improved mass-sensitive measurements of...
Recent theoretical developments in the phenomenology of alpha-clustering are presented. The interplay of clustering with decay phenomena mediated by electromagnetic and weak interactions is outlined, together with its importance for modern nuclear structure and related fields.
The elastic scattering of alpha particles on N=Z nuclei exhibits a significant enhancement of the cross section at large scattering angles, a phenomenon known as anomalous large angle scattering (ALAS) [1]. Several studies [2] suggest that ALAS is linked to the alpha-like correlations present in N=Z nuclei. Moreover, this behavior cannot be satisfactorily explained within the standard...
In my talk I will present new statistical methods for assessing the values and their uncertainties of the nuclear matrix elements for neutrinoless double beta decays, two neutrino double beta decays, two neutrino double electron capture, and neutrinoless double electron capture. The analyses are made within the traditional shell model approach. Examples for 48Ca, 82Se, 124Xe, and 136Xe will be...
Pygmy Dipole Resonance in nuclear systems, related to the dipole response around neutron separation energy, was under a close scrutiny of several experimental and theoretical investigations during the last decade. Critical questions regard its nature, centroid position and width, the evolution of its features with the number of neutrons in excess, its role in the astrophysical context. We...
