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Jouni Suhonen (University of Jyväskylä), Sabin Stoica (CIFRA)25/05/2026, 10:00
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Sabin Stoica (CIFRA)25/05/2026, 10:30
The “NEutrino Properties Through Use of Nuclei” (NEPTUN) project addresses some of the most fundamental open questions in modern physics by developing advanced theoretical methods and computational tools to study neutrinos produced in beta decay and neutrinoless double-beta decay. By combining the internationally recognised expertise of the theory groups from Jyväskylä, Bucharest, and...
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Dr Doru Delion25/05/2026, 11:40
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Dr Alexandru DUMITRESCU (IFIN-HH)25/05/2026, 12:20
We use the available experimental Gamow-Teller beta and electron-capture decay rates between 0 and 1+ ground states in neighboring even-even and odd-odd nuclei, combined with two-neutrions double beta half-lives, to analyze the influence of the nuclear environment on the weak axial-vector strength. For this purpose, the proton-neutron deformed quasiparticle random-phase approximation with a...
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Dr Mihai Horoi (CIFRA, CMU)25/05/2026, 15:00
After reviewing some recent results obtained under the present NEPTUN goals I will show how modern AI agents can be efficiently used to accelerate discovery and therefore extend the reach of the NEPTUN project goals.
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Jouni Suhonen (University of Jyväskylä)25/05/2026, 16:00
The physics of the NEPTUN project has included topics within the range of reactor antineutrinos, beta spectral shapes, the phenomenology of the axial-vector coupling, low-Q electron-capture and beta-minus decays for neutrino-mass and antineutrino-mass studies. Going beyond NEPTUN will inspire new projects and extension of the studies towards new developments in the double beta decay, ordinary...
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Dr Andrei Neacsu (CIFRA)26/05/2026, 10:00
Shell model calculations rely on effective Hamiltonians to convey observables. While the results from different Hamiltonians are generally consistent, residual uncertainties leave predictions open to question. To address this, we apply advanced statistical techniques to assign meaningful error bars to both known observables and those yet to be measured. Two unmeasured observables are of...
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Dr Andreea Budaca (CIFRA)26/05/2026, 11:10
The dynamics associated with two types of deformed nuclear systems is
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studied based on a geometrical perspective. One such problem refers to a
semiclassical treatment of a set of particles coupled to a triaxial core,
which can be put into a chiral configuration. The proposed model explores
the possibility of the harmonic chiral vibration. The quadrupole-octupole
dynamics associated with... -
Cosmin-Marian Cipu-Draghici (CIFRA, University of Bucharest)26/05/2026, 11:50
Our study investigates the response of neutron-rich nickel and tin isotopes under a dipole excitation, with emphasis on the properties of the Pygmy Dipole Resonance (PDR), the Giant Dipole Resonance (GDR) and the role of the symmetry energy. Using a framework based on Random Phase Approximation with Separable Interactions (RPA-SI), applying linear response theory and the Migdal model, we study...
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Mr Gabriel Filipciuc (CIFRA)26/05/2026, 12:30
I present a study of ordinary muon capture on 136Ba, the daughter nucleus of 136Xe double-beta decay, using two independent nuclear structure approaches: the interacting shell model (Jokiniemi code) and a proton–neutron QRPA framework (Ydrefors code). Both calculations employ an exact Dirac muon wave function and cover all relevant multipole contributions to the total capture rate. Within the...
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Dr Jenni Kotila26/05/2026, 15:00
Double beta decay provides a sensitive probe of neutrino properties and physics beyond the Standard Model. Its interpretation relies on nuclear matrix elements and, increasingly, on detailed spectral observables. In this talk, some recent developments in the description of these aspects are discussed, with emphasis on how improved nuclear‑theory inputs and precision measurements can be...
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Vasile-Alin Sevestrean (IFIN-HH, FF-UB, CIFRA)26/05/2026, 16:00
We present a comprehensive theoretical investigation of electron-capture processes and capture ratios across a broad range of atomic numbers, employing relativistic Dirac–Hartree–Fock–Slater calculations combined with improved treatments of electron correlations, overlap and exchange effects, and shake-up/shake-off processes. An energy-balance approach based on atomic masses is implemented to...
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Dr Stefan Ghinescu (CIFRA)27/05/2026, 10:00
My activities in the NEPTUN project were in part focused on elaborating the SPADES code, capable of producing phase space factors and spectra for all two-neutrino double beta decay channels and the light neutrino exchange model of their neutrinonless conterparts. The codebase is mature, able to compute PSFs and spectra to the highest precision attainable numerically, includes the most relevant...
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Dr Joona Kasurinen27/05/2026, 11:10
Tanks of liquid xenon are used in many present and upcoming dark matter direct detection experiments. As shielding these detectors from neutrinos is impossible, it is necessary to know the scattering cross sections of neutrinos with the detector material. The lack of measured cross sections necessitates theoretical methods. Here we provide the charged-current scattering cross sections for the...
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Agnitory Aagrah27/05/2026, 11:50
The study of nuclear weak processes processes play a key role in multiple avenues of searches for physics beyond the standard model. The search for the rare neutrinoless double β-decay(0νββ) and exotic dark matter in nuclear laboratory-scale experiments is among such searches that aim to answer foundational questions in physics. In the searches for exotic dark matter, unknown, rare forbidden...
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Dr Elina Kauppinen27/05/2026, 12:30
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Jouni Suhonen (University of Jyväskylä), Sabin Stoica (CIFRA)27/05/2026, 15:00
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