NSR Query Results
Output year order : Descending NSR database version of May 10, 2024. Search: Author = A.Gnech Found 9 matches. 2024GN01 Phys.Rev. C 109, 035502 (2024) A.Gnech, L.E.Marcucci, M.Viviani Bayesian analysis of muon capture on the deuteron in chiral effective field theory
doi: 10.1103/PhysRevC.109.035502
2022GN01 Few-Body Systems 63, 7 (2022) A.Gnech, C.Adams, N.Brawand, G.Carleo, A.Lovato, N.Rocco Nuclei with Up to A=6 Nucleons with Artificial Neural Network Wave Functions NUCLEAR STRUCTURE 2,3H, 6Li, 3,4,6He; calculated VM-ANN and HH point-nucleon densities, ground-state energies and charge radii using as input the leading-order pionless-EFT Hamiltonian with and without the 3N force.
doi: 10.1007/s00601-021-01706-0
2022GN02 Phys.Rev. C 106, 044001 (2022) Magnetic structure of few-nucleon systems at high momentum transfers in a chiral effective field theory approach NUCLEAR STRUCTURE 3He, 2,3H; calculated magnetic form factor. Chiral effective field theory up to N4LO. Low energy constants determined with following interaction models - NVIa, NVIb, NVIaa, NVIIb, EMN40, EMN500 and EMN550. Comparison to experimental data.
doi: 10.1103/PhysRevC.106.044001
2021DE01 Phys.Rev. C 103, L012501 (2021) Renormalization of CP-violating nuclear forces
doi: 10.1103/PhysRevC.103.L012501
2021GN01 Phys.Rev. C 104, 035501 (2021) A.Gnech, L.E.Marcucci, R.Schiavilla, M.Viviani Comparative study of 6He β-decay based on different similarity-renormalization-group evolved chiral interactions RADIOACTIVITY 3H, 6He(β-); calculated Gamow-Teller reduced matrix element (RMEs) using the similarity renormalization group (SRG) versions of momentum- and configuration-space two-nucleon interactions N2LO450 and NV2-Ia deduced from chiral effective field theory (χEFT), with and without the explicit inclusion of Δ isobars, contributions of two-body currents such as N3LO(OPE), transition densities; deduced that N3LO(OPE) contribution is opposite in sign for the SRG-evolved N2LO450 and NV2-Ia interactions. NUCLEAR STRUCTURE 6He, 6Li; calculated binding energies using the similarity renormalization group (SRG) versions of momentum- and configuration-space
doi: 10.1103/PhysRevC.104.035501
2021SC12 Phys.Rev. C 103, 054003 (2021) R.Schiavilla, L.Girlanda, A.Gnech, A.Kievsky, A.Lovato, L.E.Marcucci, M.Piarulli, M.Viviani Two- and three-nucleon contact interactions and ground-state energies of light- and medium-mass nuclei NUCLEAR STRUCTURE 3H, 3,4,6He, 6Li, 16O, 40,48Ca, 90Zr; calculated binding energies in the EFT formalism with the construction of 2N contact local interactions at LO, NLO, and N3LO in configuration space, with deuteron properties determined from analysis of np and pp scattering data. Comparison with experimental data. NUCLEAR REACTIONS 1H(n, n), (p, p), E=1-25 MeV; analyzed experimental scattering data; deduced scattering lengths, effective radii and phase shifts, deuteron S-wave radial functions at LO and deuteron S- and D-wave radial functions in the EFT formalism.
doi: 10.1103/PhysRevC.103.054003
2020GN01 Phys.Rev. C 101, 024004 (2020) Time-reversal violation in light nuclei NUCLEAR STRUCTURE 2,3H, 3He; calculated electric dipole moments (EDM) by deriving the time-reversal violation (TRV) nucleon-nucleon (NN) and three-nucleon (NNN) potential up to next-to-next leading order (N2LO) in a chiral effective field theory (χEFT) framework. Comparison with other theoretical calculations.
doi: 10.1103/PhysRevC.101.024004
2020GN02 Phys.Rev. C 102, 014001 (2020) A.Gnech, M.Viviani, L.E.Marcucci Calculation of the 6Li ground state within the hyperspherical harmonic basis NUCLEAR STRUCTURE 6Li; calculated ground state binding energy, charge radius, magnetic dipole moment, electric quadrupole moment, asymptotic normalization coefficients (ANCs), matrix elements relevant for direct dark matter search, mean values of the proton and neutron spin operators using the hyperspherical harmonic (HH) approach with two-body nuclear forces. Comparison with other theoretical predictions.
doi: 10.1103/PhysRevC.102.014001
2019GN01 Nucl.Phys. A987, 1 (2019) Theoretical calculation of the p - 6Li radiative capture reaction NUCLEAR REACTIONS 6Li(p, γ)7Be, E=0-1.6 MeV; calculated radiative capture astrophysical S-factor using cluster model with intercluster potentials adjusted to the 7Be bound state and to the properties and p-6Li elastic scattering phase shifts. Compared with available calculations and published data.
doi: 10.1016/j.nuclphysa.2019.04.005
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