254 citations · 1.4k across the 32 of their papers we have counts for
29 papers · 1 filter
A new analysis of the "hep" S-factor and the "hen" cross section
Michele Viviani, Alex Gnech, Laura Elisa Marcucci +2
We present a new accurate analysis of the HeHe (''hep'') reaction at astrophysical energies. The S-factor is computed using a state-of-the-art method to calcu…
Bayesian analysis of proton-proton fusion in chiral effective field theory
Vittorio Barlucchi, Alex Gnech, Scilla Degl'Innocenti +1
The astrophysical -factor for the proton-proton fusion is calculated in the low-energy regime for a variety of nuclear interactions and consistent nuclear currents, derived with…
Emulation of Proton-Deuteron Scattering via the Reduced Basis Method and Active Learning: Detailed Description
Alex Gnech, Xilin Zhang, Christian Drischler +5
Nucleon-deuteron () scattering can be used to constrain three-nucleon forces in chiral effective field theory (EFT). However, high-fidelity calculations, such as the Hypersp…
Accurate and Efficient Emulation of Proton-Deuteron Scattering via the Reduced Basis Method and Active Learning
Alex Gnech, Xilin Zhang, Christian Drischler +5
We introduce highly accurate and efficient emulators for proton-deuteron scattering below the deuteron breakup threshold. We explore two different reduced-basis method strategies:…
nuclear contact coefficients in the generalized contact formalism
E. Proietti, L. E. Marcucci, M. Viviani
We present a theoretical calculation for the and 4 nuclear contact coefficients within the generalized contact formalism, using both local and non-local chiral potential…
nuclear contact coefficients in the Generalized Contact Formalism
Eleonora Proietti, Laura Elisa Marcucci, Michele Viviani
This work focuses on extracting nuclear contact coefficients for \( A = 2 \), \( A = 3 \) and \( A = 4 \) nuclei within the Generalized Contact Formalism framework. We investigate…
The 3- and 4- particle systems within short-range Effective Field Theory
E. Filandri, M. Viviani, L. Girlanda +2
and nuclei represent essential elements for life on Earth. The study of their formation plays a key role in understanding heavy element nucleosynt…
The and correlation functions
E. Garrido, A. Kievsky, M. Gattobigio +5
In this work we present the study of and scattering processes using femtoscopic correlation functions. This observable has been recently used to access the low-energy in…
The X17 boson and the d(p,e+ e-)3He and d(n,e+ e-)3H processes: a theoretical analysis
M. Viviani, E. Filandri, L. Girlanda +3
The present work deals with the e+ e- pair production in the d(p,e+e-)3He and d(n,e+ e-)3H processes, in order to evidentiate possible effects due to the exchange of a hypothetical…
From response functions to cross sections in neutrino scattering off the deuteron and trinucleons
J. Golak, R. Skibinski, K. Topolnicki +4
Response functions, differential cross sections and total cross sections for several (anti)neutrino induced reactions on 2H, 3He and 3H are calculated in momentum space for (anti)n…
The astrophysical -factor and its implications for Big Bang Nucleosynthesis
A. Grassi, G. Mangano, L. E. Marcucci +1
The radiative capture is studied in order to predict the Li primordial abundance. Within a two-body framework, the particle and the deuteron…
Muon capture on 3H
J. Golak, R. Skibinski, H. Witala +4
The muon capture on 3H leading to muonic neutrino and three neutrons in the final state is studied under full inclusion of final state interactions. Predictions for the three-body…
Towards order-by-order calculations of the nuclear and neutron matter equations of state in chiral effective field theory
F. Sammarruca, L. Coraggio, J. W. Holt +3
We calculate the nuclear and neutron matter equations of state from microscopic nuclear forces at different orders in chiral effective field theory and with varying momentum-space…
Muon capture on deuteron and the neutron-neutron scattering length
L. E. Marcucci, R. Machleidt
We study the capture rate in the doublet hyperfine initial state for the muon capture reaction () and the total capture rate for the…
The nuclear matter equation of state with consistent two- and three-body perturbative chiral interactions
L. Coraggio, J. W. Holt, N. Itaco +3
We compute the energy per particle of infinite symmetric nuclear matter from chiral N3LO (next-to-next-to-next-to-leading order) two-body potentials plus N2LO three-body forces. Th…
Effect of three-nucleon interaction in p-3He elastic scattering
M. Viviani, L. Girlanda, A. Kievsky +1
We present a detailed study of the effect of different three-nucleon interaction models in p-3He elastic scattering at low energies. In particular, two models have been considered:…
Inclusive neutrino scattering off deuteron from threshold to GeV energies
G. Shen, L. E. Marcucci, J. Carlson +2
Background: Neutrino-nucleus quasi-elastic scattering is crucial to interpret the neutrino oscillation results in long baseline neutrino experiments. There are rather large uncerta…
Proton-3He elastic scattering at low energies and the "A_y Puzzle"
M. Viviani, L. Girlanda, A. Kievsky +2
The Kohn variational principle and the hyperspherical harmonic technique are applied to study p-3He elastic scattering at low energies. Preliminary results obtained using several i…
Comparative study of three-nucleon force models in systems
A. Kievsky, M. Viviani, L. Girlanda +1
Using modern nucleon-nucleon interactions in the description of the nuclei, it is not possible to reproduce both the three- and four-nucleon binding energies simultaneously…
Neutron-triton elastic scattering
M. Viviani, A. Kievsky, L. Girlanda +1
The Kohn variational principle and the hyperspherical harmonics technique are applied to study n-3H elastic scattering at low energies. In this contribution the first results obtai…
Quantum Monte Carlo calculations of magnetic moments and M1 transitions in A<=7 nuclei including meson-exchange currents
L. E. Marcucci, Muslema Pervin, Steven C. Pieper +2
Green's function Monte Carlo calculations of magnetic moments and M1 transitions including two-body meson-exchange current (MEC) contributions are reported for A<=7 nuclei. The rea…
A high-precision variational approach to three- and four-nucleon bound and zero-energy scattering states
A. Kievsky, S. Rosati, M. Viviani +2
The hyperspherical harmonic (HH) method has been widely applied in recent times to the study of the bound states, using the Rayleigh-Ritz variational principle, and of low-energy s…
Variational Calculation on A=3 and 4 Nuclei with Non-Local Potentials
M. Viviani, L. E. Marcucci, S. Rosati +2
The application of the hyperspherical harmonic approach to the case of non-local two-body potentials is described. Given the properties of the hyperspherical harmonic functions, th…
Two-Body Electrodisintegration of He at High Momentum Transfer
R. Schiavilla, O. Benhar, A. Kievsky +2
The He reaction is studied using an accurate three-nucleon bound state wave function, a model for the electromagnetic current operator including one- and two…