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Search: Author = R.Schiavilla

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2022GN02      Phys.Rev. C 106, 044001 (2022)

A.Gnech, R.Schiavilla

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
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2022KI11      Phys.Rev. C 105, L042501 (2022)

G.B.King, S.Pastore, M.Piarulli, R.Schiavilla

Partial muon capture rates in A=3 and A=6 nuclei with chiral effective field theory

NUCLEAR REACTIONS 3He, 6Li(μ-, ν); E at rest; calculated partial muon capture rates. Ab-initio calculations - variational and Green’s function Monte Carlo methods. Comparison to experimental data.

doi: 10.1103/PhysRevC.105.L042501
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2022PA12      Phys.Rev. C 105, 049802 (2022)

S.Pastore, J.Carlson, R.Schiavilla, J.L.Barrow, S.Gandolfi, R.B.Wiringa

Reply to "Comment on 'Quasielastic lepton scattering and back-to-back nucleons in the short-time approximation"

NUCLEAR REACTIONS 4He(e, e'), q=300-800 MeV/c; calculated transverse scaling functions for 4He with one-body and one plus two-body currents. Short time approximation (STA). Pointed that enhanced scaling reflects quasielastic kinematics and the dominant role played by pion-exchange interactions and currents in the quasielastic regime.

doi: 10.1103/PhysRevC.105.049802
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2022VI01      Phys.Rev. C 105, 014001 (2022)

M.Viviani, E.Filandri, L.Girlanda, C.Gustavino, A.Kievsky, L.E.Marcucci, R.Schiavilla

X17 boson and the3H(p, e+e-)4He and 3He(n, e+e-4He processes: A theoretical analysis

NUCLEAR REACTIONS 3H(p, γ)4He, E(cm)<0.85 MeV; 3He(n, γ)4He, E(cm)<2 MeV; calculated astrophysical S factor, total σ(E) using Δ-less (N3LO500/N2LO500) and Δ-full (NVIa/3NIa) χEFT formalism, and compared with experimental data. 3H(p, e-e+)4He, E=0.90 MeV; calculated five-fold differential σ(E, θ) as function of the electron energy using N3LO500/N2LO500 interactions in the ATOMKI setup. 3H(p, e-e+)4He, E=0.40, 0.90 MeV; 3He(n, e-e+)4He, E=0.17, 0.35, 0.70, 2.0 MeV; calculated four-fold differential σ(E, θ) based on the N3LO500/N2LO500 interactions, including results obtained from the exchange of a scalar, pseudoscalar, vector, and axial X17 boson, and compared with differential σ data for 3H(p, e-e+)4He, E=0.51, 0.61.0.90 MeV reaction from ATOMKI (reported by 2021Kr08: Phys. Rev. C 104, 044003). 3H(p, p)(p, p'), E=0.9 MeV; calculated reduced matrix elements (RMEs) for channels with J≤2, dependences on the three-momentum transfer and proton incident energy of electromagnetic RMEs using N3LO500/N2LO500 or NVIa/3NIa chiral interactions. 3He(n, e-e+)4He, 3He(n, γ)4He, E=0.17, 0.35, 0.70, 1.00, 2.00, 3.50 MeV; calculated total σ(E) using the N3LO500/N2LO500 and NVIa/3NIa Hamiltonians; deduced X17 coupling constants from the fit of the 2019 ATOMKI angular distribution data for 3H(p, e+e-)4He, E=0.90 MeV. Relevance to possible future experiments probing e+ - e- pair production in a four-nucleon system such as 4He at a number of candidate facilities.

doi: 10.1103/PhysRevC.105.014001
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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
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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
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2020KI13      Phys.Rev. C 102, 025501 (2020)

G.B.King, L.Andreoli, S.Pastore, M.Piarulli, R.Schiavilla, R.B.Wiringa, J.Carlson, S.Gandolfi

Chiral effective field theory calculations of weak transitions in light nuclei

NUCLEAR STRUCTURE 3H, 4,6,8He, 6,7,8Li, 7,8Be, 8,10B, 10C; calculated energies of ground and excited states, point-proton radii using Green's function Monte Carlo (GFMC) calculations, and compared with experimental data.

RADIOACTIVITY 6,8He, 8Li(β-); 7Be(EC); 8B, 10C(β+); calculated Gamow-Teller reduced matrix elements (RMEs), two-body transition densities and pair densities using chiral axial currents and GFMC (VMC) wave functions, with NV2+3-Ia and NV2+3-Ia* Hamiltonian models, and RMEs compared to experimental data.

doi: 10.1103/PhysRevC.102.025501
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2020PA15      Phys.Rev. C 101, 044612 (2020)

S.Pastore, J.Carlson, S.Gandolfi, R.Schiavilla, R.B.Wiringa

Quasielastic lepton scattering and back-to-back nucleons in the short-time approximation

NUCLEAR REACTIONS 4He(e, e'), q=300-800 MeV/c; calculated transverse response densities, longitudinal and transverse sum rules, contribution of response density in the back-to-back configurations due to scattering from pp and nn pairs. Short time approximation (STA), combined with quantum Monte Carlo computational methods. Comparison with experimental data, and with results from Green's function Monte Carlo (GFMC) method. Relevance to current and planned neutrino oscillation experiments.

doi: 10.1103/PhysRevC.101.044612
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2019LO11      Phys.Rev. C 100, 035502 (2019)

A.Lovato, N.Rocco, R.Schiavilla

Muon capture in nuclei: An ab initio approach based on Green's function Monte Carlo methods

NUCLEAR REACTIONS 4He(μ, nν)3H, (μ, 2nν)2H, (μ, 3nν)1H, 3H(μ, 3nν), E=0-83.6 MeV; calculated differential rates of muon capture on 3H and 4He as function of energy of the muon neutrino using an ab initio Green's function Monte Carlo (GFMC) method, in a dynamical framework based on realistic two- and three-nucleon interactions and realistic nuclear charge-changing weak currents. Comparison with experimental data for muon capture in 4He.

doi: 10.1103/PhysRevC.100.035502
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2019SC07      Phys.Rev. C 99, 034005 (2019)

R.Schiavilla, A.Baroni, S.Pastore, M.Piarulli, L.Girlanda, A.Kievsky, A.Lovato, L.E.Marcucci, StevenC.Pieper, M.Viviani, R.B.Wiringa

Local chiral interactions and magnetic structure of few-nucleon systems

NUCLEAR STRUCTURE 2,3H, 3He; calculated magnetic form factors, and contributions to the isoscalar and isovector combinations of the trinucleon magnetic moments using chiral interactions. Comparison with experimental data.

NUCLEAR REACTIONS 2H(γ, n), E=2-29 MeV; 2H(e, n), E=0-3 MeV; calculated deuteron photodisintegration cross sections, deuteron threshold electrodisintegration cross sections at backward angles using chiral two-, and three-nucleon interactions including Δ intermediate states for LO, NLO, N2LO, and N3LO models. Comparison with experimental data.

doi: 10.1103/PhysRevC.99.034005
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2018BA37      Phys.Rev. C 98, 044003 (2018)

A.Baroni, R.Schiavilla, L.E.Marcucci, L.Girlanda, A.Kievsky, A.Lovato, S.Pastore, M.Piarulli, S.Pieper, M.Viviani, R.B.Wiringa

Local chiral interactions, the tritium Gamow-Teller matrix element, and the three-nucleon contact term

RADIOACTIVITY 3H(β-); calculated Gamow-Teller matrix element, and low energy constants in the contact three-nucleon interaction within the chiral two- and three nucleon interactions including Δ intermediate states, contributions due to loop corrections in the axial current at next-to-next-to-next-to-next-to-leading order (N4LO). Comparison with experimental values.

doi: 10.1103/PhysRevC.98.044003
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2018LO04      Phys.Rev. C 97, 022502 (2018)

A.Lovato, S.Gandolfi, J.Carlson, E.Lusk, S.C.Pieper, R.Schiavilla

Quantum Monte Carlo calculation of neutral-current ν - 12C inclusive quasielastic scattering

NUCLEAR REACTIONS 12C(ν, ν), (ν-bar, ν-bar), at energy transfer ω<400 MeV; calculated response functions and differential cross sections at final neutrino angles of 15°, 30°, 60° and 120° for neutral-current scattering at momentum transfer q=570 MeV/c; deduced substantial two-nucleon contributions to the neutral-current scattering of neutrinos and antineutrinos over the entire quasielastic region. Realistic treatments of nuclear interactions and currents, including the axial, vector, and vector-axial interference terms. Relevance to T2K, MINERνA and DUNE experiments.

doi: 10.1103/PhysRevC.97.022502
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2018PA08      Phys.Rev. C 97, 022501 (2018)

S.Pastore, A.Baroni, J.Carlson, S.Gandolfi, StevenC.Pieper, R.Schiavilla, R.B.Wiringa

Quantum Monte Carlo calculations of weak transitions in A = 6-10 nuclei

RADIOACTIVITY 3H, 6He(β-); 10C(β+); 7Be(EC); calculated ab initio Gamow-Teller (GT) reduced matrix elements (RMEs) using variational and Green's function Monte Carlo wave functions (GFMC, VMC)from the Argonne v18 two-nucleon and Illinois-7 three-nucleon interactions, and axial many-body currents from either meson-exchange phenomenology or chiral effective field theory. Comparison with experimental data. Calculations for 3H decay in Supplemental Material (Ref, 32 in paper).

doi: 10.1103/PhysRevC.97.022501
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2018PI01      Phys.Rev.Lett. 120, 052503 (2018)

M.Piarulli, A.Baroni, L.Girlanda, A.Kievsky, A.Lovato, E.Lusk, L.E.Marcucci, S.C.Pieper, R.Schiavilla, M.Viviani, R.B.Wiringa

Light-Nuclei Spectra from Chiral Dynamics

doi: 10.1103/PhysRevLett.120.052503
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2017BA18      Phys.Rev. C 96, 014002 (2017)

A.Baroni, R.Schiavilla

Inclusive neutrino scattering off the deuteron at low energies in chiral effective field theory

NUCLEAR REACTIONS 2H(ν, ν')np, (ν-bar, ν-bar')np, (ν, e-)pp, (ν-bar, e+)nn, E<150 MeV; calculated charge-changing (CC) and neutral weak currents (NC) σ(E), total cross sections for both the processes. Chiral effective field theory (ΧEFT) including high orders, up to N3LO in the vector current and axial charge, and up to N4LO in the axial current and vector charge, in the power counting.

doi: 10.1103/PhysRevC.96.014002
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2017RI02      Int.J.Mod.Phys. E26, 1740022 (2017)

D.O.Riska, R.Schiavilla

Chiral electroweak currents in nuclei

NUCLEAR STRUCTURE 2,3H, 3,4He, 9,7Be, 8B, 6,7,8Li; calculated M1, E2 transition widths, magnetic moments, magnetic form factors. Comparison with available data.

doi: 10.1142/S0218301317400225
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2016BA06      Phys.Rev. C 93, 015501 (2016); Erratum Phys.Rev. C 95, 059901 (2017)

A.Baroni, L.Girlanda, S.Pastore, R.Schiavilla, M.Viviani

Nuclear axial currents in chiral effective field theory

doi: 10.1103/PhysRevC.93.015501
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2016BA40      Phys.Rev. C 94, 024003 (2016); Erratum Phys.Rev. C 95, 059902 (2017)

A.Baroni, L.Girlanda, A.Kievsky, L.E.Marcucci, R.Schiavilla, M.Viviani

Tritium β decay in chiral effective field theory

RADIOACTIVITY 3H(β-); calculated Fermi and Gamow-Teller (GT) matrix elements by including in the charge-changing weak current corrections up to one in nuclear chiral effective field theory (χEFT), low-energy constants (LECs), one pion exchange (OPE) contributions.

doi: 10.1103/PhysRevC.94.024003
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2016LO09      Phys.Rev.Lett. 117, 082501 (2016)

A.Lovato, S.Gandolfi, J.Carlson, Steven C.Pieper, R.Schiavilla

Electromagnetic Response of 12C: A First-Principles Calculation

NUCLEAR REACTIONS 12C(E, E'), E<400 MeV; calculated electromagnetic longitudinal and transverse response functions, form factors, Coulomb sum rule.

doi: 10.1103/PhysRevLett.117.082501
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2016MA09      J.Phys.(London) G43, 023002 (2016)

L.E.Marcucci, F.Gross, M.T.Pena, M.Piarulli, R.Schiavilla, I.Sick, A.Stadler, J.W.Van Orden, M.Viviani

Electromagnetic structure of few-nucleon ground states

NUCLEAR REACTIONS 2,3H, 3,4He(E, E), E not given; analyzed available data; deduced experimental form factors of the hydrogen and helium isotopes, extracted from an up-to-date global analysis of σ and polarization observables measured in elastic electron scattering from these systems.

doi: 10.1088/0954-3899/43/2/023002
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2016PI15      Phys.Rev. C 94, 054007 (2016)

M.Piarulli, L.Girlanda, R.Schiavilla, A.Kievsky, A.Lovato, L.E.Marcucci, StevenC.Pieper, M.Viviani, R.B.Wiringa

Local chiral potentials with Δ-intermediate states and the structure of light nuclei

NUCLEAR STRUCTURE 3H, 3,4,6He, 6Li; calculated ground- and excited-state energies, and proton rms radii using nonlocal nucleon-nucleon potentials in hyperspherical harmonics (HH), variational Monte Carlo (VMC), Green's function Monte Carlo (GFMC) approaches.

NUCLEAR REACTIONS 1H(p, p), (n, n), E=0-125, 0-200 MeV; analyzed Granada-2013 database of pp and np observables order by order in the chiral expansion up to N3LO and fitted to the deuteron binding energy and nn singlet scattering length; deduced nucleon-nucleon potentials, long-range included one- and two-pion exchange contributions without and with Δ isobars in the intermediate states up to order Q3 in the chiral expansion, while the short range consisted of contact interactions up to order Q4.

doi: 10.1103/PhysRevC.94.054007
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2015LO05      Phys.Rev. C 91, 062501 (2015)

A.Lovato, S.Gandolfi, J.Carlson, S.C.Pieper, R.Schiavilla

Electromagnetic and neutral-weak response functions of 4He and 12C

NUCLEAR REACTIONS 4He, 12C(e, e') at q=570, 600 MeV; calculated Euclidean neutral-weak transverse and interference response functions, Euclidean electromagnetic longitudinal and transverse response function. Green's function Monte Carlo (GFMC) method. Comparison with experimental data. Results question the conventional picture of dominant single-nucleon knockout processes in quasielastic inclusive scattering.

doi: 10.1103/PhysRevC.91.062501
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2015PI04      Phys.Rev. C 91, 024003 (2015)

M.Piarulli, L.Girlanda, R.Schiavilla, R.Navarro-Perez, J.E.Amaro, E.Ruiz Arriola

Minimally nonlocal nucleon-nucleon potentials with chiral two-pion exchange including Δ resonances

doi: 10.1103/PhysRevC.91.024003
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2014FO08      Phys.Rev. C 89, 034004 (2014)

W.P.Ford, R.Schiavilla, J.W.Van Orden

The 3He(e, e'p) 2H and 4He(e, e'p)3H reactions at high momentum transfer

NUCLEAR REACTIONS 3He(e, e'p), 4He(e, e'p), (polarized e, e'p), at 0-1200 MeV/c; calculated differential σ(momentum transfer), longitudinal transverse asymmetry, induced polarization for 4He in (polarized e, e' polarized proton). Plane-wave impulse approximation (PWIA) with the full single and double rescattering Glauber approximation. Comparison with experimental data.

doi: 10.1103/PhysRevC.89.034004
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2014LO06      Phys.Rev.Lett. 112, 182502 (2014)

A.Lovato, S.Gandolfi, J.Carlson, Steven C.Pieper, R.Schiavilla

Neutral Weak Current Two-Body Contributions in Inclusive Scattering from 12C

NUCLEAR STRUCTURE 12C; calculated sum rules of the neutral weak response functions. Ab initio model.

doi: 10.1103/PhysRevLett.112.182502
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2014PA41      Phys.Rev. C 90, 024321 (2014)

S.Pastore, R.B.Wiringa, S.C.Pieper, R.Schiavilla

Quantum Monte Carlo calculations of electromagnetic transitions in 8Be with meson-exchange currents derived from chiral effective field theory

NUCLEAR STRUCTURE 8Be; calculated Green's function Monte Carlo (GFMC) ground-state energies, levels, J, π, E2 and M1 transition matrix elements, isospin-mixed widths, one- and two-body M1 transition densities. Argonne ν18 two-nucleon and Illinois-7 three-nucleon potentials and chiral effective field theory. Comparison with experimental data.

doi: 10.1103/PhysRevC.90.024321
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2014VI02      Phys.Rev. C 89, 064004 (2014)

M.Viviani, A.Baroni, L.Girlanda, A.Kievsky, L.E.Marcucci, R.Schiavilla

Chiral effective field theory analysis of hadronic parity violation in few-nucleon systems

NUCLEAR REACTIONS 1H(polarized p, X), 1,2H(polarized n, X), 3He(polarized n, p)3H; analyzed parity-violating (PV) nucleon-nucleon potential up to next-to-next-to-leading (N2LO) order within a chiral effective field theory (χEFT) framework. Predictions for other PV observables. Discussed relevant ongoing and planned experiments at SNS facility of Oak Ridge National Laboratory.

doi: 10.1103/PhysRevC.89.064004
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2014WI01      Phys.Rev. C 89, 024305 (2014)

R.B.Wiringa, R.Schiavilla, S.C.Pieper, J.Carlson

Nucleon and nucleon-pair momentum distributions in A ≤ 12 nuclei

NUCLEAR STRUCTURE 2H, 3,4,6,8He, 6,7,8,9Li, 8,9,10Be, 10B, 12C; calculated neutron and proton single-nucleon distributions, nucleon-pair, and nucleon-cluster momentum distributions distribution, spin-isospin densities and correlations. Variational Monte Carlo wave functions using realistic Argonne ν18 two-nucleon and Urbana X three-nucleon potentials.

doi: 10.1103/PhysRevC.89.024305
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2013LO09      Phys.Rev.Lett. 111, 092501 (2013)

A.Lovato, S.Gandolfi, R.Butler, J.Carlson, E.Lusk, Steven C.Pieper, R.Schiavilla

Charge Form Factor and Sum Rules of Electromagnetic Response Functions in 12C

NUCLEAR REACTIONS 12C(E, E), (E, E'), E<350 MeV; calculated ground-state wave function, elastic form factor. Green's function Monte Carlo, comparison with available data.

doi: 10.1103/PhysRevLett.111.092501
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2013MA37      Phys.Rev.Lett. 110, 192503 (2013)

L.E.Marcucci, R.Schiavilla, M.Viviani

Proton-Proton Weak Capture in Chiral Effective Field Theory

doi: 10.1103/PhysRevLett.110.192503
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2013PA10      Phys.Rev. C 87, 035503 (2013)

S.Pastore, S.C.Pieper, R.Schiavilla, R.B.Wiringa

Quantum Monte Carlo calculations of electromagnetic moments and transitions in A≤9 nuclei with meson-exchange currents derived from chiral effective field theory

NUCLEAR STRUCTURE 2,3H, 3He, 6,7,8,9Li, 7,9Be, 8,9B, 9C; calculated levels, J, π, isospin, nucleon radii, magnetic dipole moments, electric quadrupole moments, magnetic density, M1 and E2 transition widths and matrix elements. Greens function Monte Carlo (GFMC) calculations using realistic Argonne ν18 two-nucleon and Illinois-7 three-nucleon potentials, with inclusion of two-body meson-exchange current (MEC) operators for magnetic moments and M1 transitions. Comparison with experimental data.

doi: 10.1103/PhysRevC.87.035503
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2013PI01      Phys.Rev. C 87, 014006 (2013)

M.Piarulli, L.Girlanda, L.E.Marcucci, S.Pastore, R.Schiavilla, M.Viviani

Electromagnetic structure of A=2 and 3 nuclei in chiral effective field theory

NUCLEAR STRUCTURE 2H, 3H, 3He; calculated structure function, tensor polarization, charge, isoscalar and isovector magnetic and quadrupole form factors, low-energy constants (LEC). Chiral-effective-field-theory. Chiral or conventional two- and three-nucleon potentials and Monte Carlo methods.

doi: 10.1103/PhysRevC.87.014006
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2012MA01      Phys.Rev.Lett. 108, 052502 (2012)

L.E.Marcucci, A.Kievsky, S.Rosati, R.Schiavilla, M.Viviani

Chiral Effective Field Theory Predictions for Muon Capture on Deuteron and 3He

NUCLEAR REACTIONS 2H, 3He(μ-, ν), E not given; calculated muon capture rates; deduced a value of induced pseudoscalar form factor. Comparison with measurements and chiral perturbation theory.

doi: 10.1103/PhysRevLett.108.052502
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2012SH28      Phys.Rev. C 86, 035503 (2012)

G.Shen, L.E.Marcucci, J.Carlson, S.Gandolfi, R.Schiavilla

Inclusive neutrino scattering off the deuteron from threshold to GeV energies

NUCLEAR REACTIONS 2H(ν, ν'), (ν-bar, ν-bar), (ν, e-), (ν-bar, e+), E=100-1000 MeV; calculated total σ(E) sections, logitudinal and transverse electromagnetic responses, differential σ(E). AV18 potential, and consistent nuclear electroweak currents with one- and two-body terms. comparison with experimental data. Relevance to interpretation of neutrino oscillation results in long baseline neutrino experiments.

doi: 10.1103/PhysRevC.86.035503
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2011AD03      Rev.Mod.Phys. 83, 195 (2011)

E.G.Adelberger, A.Garcia, R.G.H.Robertson, K.A.Snover, A.B.Balantekin, K.Heeger, M.J.Ramsey-Musolf, A.B.Balantekin, K.Heeger, M.J.Ramsey-Musolf, D.Bemmerer, A.Junghans, D.Bemmerer, A.Junghans, C.A.Bertulani, K.-W.Chen, H.Costantini, P.Prati, M.Couder, E.Uberseder, M.Wiescher, R.Cyburt, B.Davids, S.J.Freedman, M.Gai, D.Gazit, L.Gialanella, G.Imbriani, U.Greife, M.Hass, W.C.Haxton, T.Itahashi, K.Kubodera, K.Langanke, D.Leitner, M.Leitner, P.Vetter, L.Winslow, L.E.Marcucci, T.Motobayashi, A.Mukhamedzhanov, R.E.Tribble, F.M.Nunes, T.-S.Park, R.Schiavilla, E.C.Simpson, C.Spitaleri, F.Strieder, H.-P.Trautvetter, K.Suemmerer, S.Typel

Solar fusion cross sections. II. The pp chain and CNO cycles

NUCLEAR REACTIONS 2H(p, γ), 3He(3He, 2p), (α, γ), (p, e), 7Be, 12C, 14N, 15N, 17O(p, γ), 15N, 16,17,18O(p, α), E<3 MeV; analyzed and evaluated experimental data; deduced recommended values and uncertainties.

doi: 10.1103/RevModPhys.83.195
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2011MA05      Phys.Rev. C 83, 014002 (2011)

L.E.Marcucci, M.Piarulli, M.Viviani, L.Girlanda, A.Kievsky, S.Rosati, R.Schiavilla

Muon capture on deuteron and 3He

NUCLEAR REACTIONS 2H(μ-, ν)2n, 3He(μ-, ν)3H; calculated binding energies of deuteron, triton and 3H, scattering lengths, magnetic moments, total and differential rates for muon capture using chiral effective field theory (EFT) with the two- and three-nucleon potentials AV18/UIX and N3LO/N2LO. Comparison with experimental data.

doi: 10.1103/PhysRevC.83.014002
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2011PA22      Phys.Rev. C 84, 024001 (2011)

S.Pastore, L.Girlanda, R.Schiavilla, M.Viviani

Two-nucleon electromagnetic charge operator in chiral effective field theory (χEFT) up to one loop

doi: 10.1103/PhysRevC.84.024001
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2011TO06      Phys.Lett. B 702, 121 (2011)

W.Tornow, H.J.Karwowski, J.H.Kelley, R.Raut, G.Rusev, S.C.Stave, A.P.Tonchev, A.Deltuva, A.C.Fonseca, L.E.Marcucci, M.Viviani, A.Kievsky, J.Golak, R.Skibinski, H.Witala, R.Schiavilla

Two-body photodisintegration of 3He between 7 and 16 MeV

NUCLEAR REACTIONS 3He(γ, p), E=7-16 MeV; measured reaction products, Ep, Ip; deduced σ. Comparison with theoretical calculations and experimental data.

doi: 10.1016/j.physletb.2011.06.080
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetL0168.


2010GI01      Phys.Rev. C 81, 034005 (2010)

L.Girlanda, S.Pastore, R.Schiavilla, M.Viviani

Relativity constraints on the two-nucleon contact interaction

doi: 10.1103/PhysRevC.81.034005
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2010GI10      Phys.Rev.Lett. 105, 232502 (2010)

L.Girlanda, A.Kievsky, L.E.Marcucci, S.Pastore, R.Schiavilla, M.Viviani

Thermal Neutron Captures on d and 3He

NUCLEAR REACTIONS 2H, 3He(n, γ), E=thermal; calculated wave functions, σ. Comparison with experimental data.

doi: 10.1103/PhysRevLett.105.232502
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2010VI06      Phys.Rev. C 82, 044001 (2010)

M.Viviani, R.Schiavilla, L.Girlanda, A.Kievsky, L.E.Marcucci

Parity-violating asymmetry in the 3He(n(pol), p)3H reaction

NUCLEAR REACTIONS 3He(polarized n, p)3H, E AP 0; calculated parity-violating R-and T-matrix elements using the meson-exchange DDH or pionless effective-field-theory (EFT) model for the weak-interaction potential.

doi: 10.1103/PhysRevC.82.044001
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2009PA34      Phys.Rev. C 80, 034004 (2009)

S.Pastore, L.Girlanda, R.Schiavilla, M.Viviani, R.B.Wiringa

Electromagnetic currents and magnetic moments in chiral effective field theory χEFT)

doi: 10.1103/PhysRevC.80.034004
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2008MA50      Phys.Rev. C 78, 065501 (2008)

L.E.Marcucci, M.Pervin, Steven C.Pieper, R.Schiavilla, R.B.Wiringa

Quantum Monte Carlo calculations of magnetic moments and M1 transitions in A ≤ 7 nuclei including meson-exchange currents

NUCLEAR STRUCTURE 2H, 3H, 3He, 6Li, 7Li, 7Be; calculated magnetic moments, transition widths. Monte Carlo method.

doi: 10.1103/PhysRevC.78.065501
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2008PA37      Phys.Rev. C 78, 064002 (2008)

S.Pastore, R.Schiavilla, J.L.Goity

Electromagnetic two-body currents of one- and two-pion range

NUCLEAR REACTIONS 1,2H(n, γ), E=thermal; calculated σ, photon polarization parameter. Explicit-field theory.

doi: 10.1103/PhysRevC.78.064002
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2008SC14      Phys.Rev. C 78, 014002 (2008); Erratum Phys.Rev. C 83, 029902 (2011)

R.Schiavilla, M.Viviani, L.Girlanda, A.Kievsky, L.E.Marcucci

Neutron spin rotation in n(pol)-d scattering

doi: 10.1103/PhysRevC.78.014002
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2008WI08      Phys.Rev. C 78, 021001 (2008)

R.B.Wiringa, R.Schiavilla, Steven C.Pieper, J.Carlson

Dependence of two-nucleon momentum densities on total pair momentum

NUCLEAR STRUCTURE 3,4He; calculated dependence of two-nucleon momentum distributions for ground states on total pair momentum using variational Monte Carlo wave functions.

doi: 10.1103/PhysRevC.78.021001
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2007AR18      Phys.Rev. C 76, 014007 (2007)

A.Arriaga, R.Schiavilla

Relativistic calculation of deuteron threshold electrodisintegration at backward angles

doi: 10.1103/PhysRevC.76.014007
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2007SC06      Phys.Rev.Lett. 98, 132501 (2007)

R.Schiavilla, R.B.Wiringa, S.C.Pieper, J.Carlson

Tensor Forces and the Ground-State Structure of Nuclei

NUCLEAR STRUCTURE 3,4He, 6Li, 8Be; calculated two-nucleon momentum distributions; deduced effect of tensor forces. Variational Monte Carlo wave functions.

doi: 10.1103/PhysRevLett.98.132501
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2007VI13      Phys.Rev.Lett. 99, 112002 (2007)

M.Viviani, R.Schiavilla, B.Kubis, R.Lewis, L.Girlanda, A.Kievsky, L.E.Marcucci, S.Rosati

Isospin Mixing in the Nucleon and 4He and the Nucleon Strange Electric Form Factor

NUCLEAR STRUCTURE 4He; calculated isospin breaking corrections needed to isolate the contribution of nucleon strange electric form factor to the parity violating assymetry measured in polarized electron scattering.

doi: 10.1103/PhysRevLett.99.112002
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2006MA94      Nucl.Phys. A777, 111 (2006)

L.E.Marcucci, K.M.Nollett, R.Schiavilla, R.B.Wiringa

Modern theories of low-energy astrophysical reactions

NUCLEAR REACTIONS 1H(n, γ), E=1-1000 keV; calculated σ(E). 1H(n, γ), E=thermal; calculated σ. 2H(p, γ), E(cm)=0-50 keV; 3He(p, e+ν), E=low; 2H(α, γ), E(cm)=0.05-10 MeV; 3He(α, γ), E(cm)=0-2.5 MeV; 3H(α, γ), E(cm)=0-1.5 MeV; calculated astrophysical S-factor. Direct integration, correlated hyperspherical harmonics and variational Monte Carlo models with realistic two- and three-nucleon interactions. Comparison with data.

RADIOACTIVITY 7Be(EC);3H(β-); calculated T1/2 and Gamow-Teller matrix elements. Comparison with data.

NUCLEAR STRUCTURE 3H, 3,4He, 6,7Li, 7Be; calculated binding energies. Correlated hyperspherical harmonics, variational Monte Carlo and Green's function Monte Carlo models. Comparison with data.

doi: 10.1016/j.nuclphysa.2004.09.008
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2005MA18      Eur.Phys.J. A 24, Supplement 1, 95 (2005)

L.E.Marcucci, M.Viviani, R.Schiavilla, A.Kievsky, S.Rosati

Electrodisintegration of 3He below and above deuteron breakup threshold

NUCLEAR REACTIONS 2H(p, γ), E(cm)=2 MeV; calculated σ(θ), analyzing powers. 3He(e, e'), E not given; calculated longitudinal and transverse response functions. 3He(e, e'd), E=370, 576 MeV; calculated σ(E, θ). Pair-correlated hyperspherical harmonics method, comparison with data.

doi: 10.1140/epjad/s2005-05-017-7
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2005MA54      Phys.Rev. C 72, 014001 (2005)

L.E.Marcucci, M.Viviani, R.Schiavilla, A.Kievsky, S.Rosati

Electromagnetic structure of A = 2 and 3 nuclei and the nuclear current operator

NUCLEAR REACTIONS 2H(p, p), E(cm)=6.66 MeV; 2H(p, γ), E(cm)=2-18.66calculated σ(θ), analyzing powers. 1,2H(n, γ), E=thermal; calculated σ. 2H(n, γ), E(cm)=6, 7.2 MeV; calculated σ(θ). Comparisons with data.

NUCLEAR STRUCTURE 3H, 3He; calculated μ, form factors.

doi: 10.1103/PhysRevC.72.014001
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2005SC02      Phys.Rev.Lett. 94, 072303 (2005)

R.Schiavilla, O.Benhar, A.Kievsky, L.E.Marcucci, M.Viviani

Polarization Transfer in 4He(e(pol), e'p(pol))3H: Is the Ratio GEp/GMp Modified in the Nuclear Medium?

NUCLEAR REACTIONS 4He(polarized e, e'p), E=high; analyzed polarization transfer, induced polarization; deduced no medium modification.

doi: 10.1103/PhysRevLett.94.072303
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2005SC19      Phys.Rev. C 72, 034001 (2005)

R.Schiavilla

Induced polarization in the 2H(γ, n(pol))1H reaction at low energy

NUCLEAR REACTIONS 2H(γ, n), E ≈ 3-33 MeV; calculated photodisintegration σ, σ(θ), induced polarization. Several models compared with data.

doi: 10.1103/PhysRevC.72.034001
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2005SC30      Phys.Rev. C 72, 064003 (2005)

R.Schiavilla, O.Benhar, A.Kievsky, L.E.Marcucci, M.Viviani

Two-body electrodisintegration of 3He at high momentum transfer

NUCLEAR REACTIONS 3He(e, e'p), E=high; calculated σ vs missing momentum, longitudinal-transverse asymmetry. Comparison with data.

doi: 10.1103/PhysRevC.72.064003
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2004AN27      Eur.Phys.J. A 22, 449 (2004)

K.A.Aniol, M.B.Epstein, E.Gama, D.J.Margaziotis, W.Bertozzi, J.P.Chen, D.Dale, R.E.J.Florizone, S.Gilad, A.J.Sarty, J.A.Templon, S.P.Van Verst, J.Zhao, Z.-L.Zhou, P.Bartsch, W.U.Boeglin, R.Boehm, M.O.Distler, I.Ewald, J.M.Friedrich, J.M.Friedrich, R.Geiges, P.Jennewein, M.Kahrau, K.W.Krygier, A.Liesenfeld, H.Merkel, K.Merle, U.Muller, R.Neuhausen, E.A.J.M.Offermann, Th.Pospischil, G.Rosner, H.Schmieden, A.Wagner, Th.Walcher, M.Kuss, A.Richter, G.Schrieder, K.Bohinc, M.Potokar, S.Sirca, J.M.Udias, J.R.Vignote, R.Schiavilla

Measurement of RLT and ATL in the 4He(e, e'p)3H reaction at pmiss of 130-300 MeV/c

NUCLEAR REACTIONS 4He(e, e'p), E=675, 855 MeV; measured σ(E, θ), transverse-longitudinal asymmetry, response function. Comparison with model predictions.

doi: 10.1140/epja/i2004-10040-x
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2004SC38      Phys.Rev. C 70, 044007 (2004)

R.Schiavilla, J.Carlson, M.Paris

Parity-violating interaction effects in the np system

NUCLEAR REACTIONS 1H(polarized n, n), E=0-180 MeV; 1H(polarized n, γ), E=thermal; 2H(polarized γ, n), E=threshold-20 MeV; 2H(polarized e, e'n), E=70-104 MeV; calculated σ, σ(θ), parity-violating asymmetries.

doi: 10.1103/PhysRevC.70.044007
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2003BR21      Eur.Phys.J. A 18, 289 (2003)

V.R.Brown, B.F.Gibson, J.A.Carlson, R.Schiavilla

Parity non-conservation in proton-proton elastic scattering

NUCLEAR REACTIONS 1H(polarized p, p), E=0-350 MeV; calculated parity-non-conserving longitudinal asymmetry.

doi: 10.1140/epja/i2002-10218-2
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2003CA02      Phys.Lett. B 553, 191 (2003)

J.Carlson, J.Jourdan, R.Schiavilla, I.Sick

Coulomb sum rule for 4He

NUCLEAR REACTIONS 4He(e, e'), E not given; analyzed longitudinal and transverse response functions. 4He deduced Coulomb sum rule, no medium modification of nucleon form factors.

doi: 10.1016/S0370-2693(02)03231-8
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2003PA19      Phys.Rev. C 67, 055206 (2003)

T.-S.Park, L.E.Marcucci, R.Schiavilla, M.Viviani, A.Kievsky, S.Rosati, K.Kubodera, D.-P.Min, M.Rho

Parameter-free effective field theory calculation for the solar proton-fusion and hep processes

NUCLEAR REACTIONS 1H, 3He(p, e+ν), E=low; calculated threshold astrophysical S-factors, dependence on cutoff parameters. Effective field theory.

doi: 10.1103/PhysRevC.67.055206
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2003SC04      Phys.Rev. C 67, 032501 (2003)

R.Schiavilla, J.Carlson, M.Paris

Parity-violating interactions and currents in the deuteron

NUCLEAR REACTIONS 1H(polarized n, γ), E=thermal; calculated radiative capture σ, asymmetry, parity-violation effects. 2H(e, e'p), E=193 MeV; calculated longitudinal asymmetry vs momentum transfer, parity-violation effects.

doi: 10.1103/PhysRevC.67.032501
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2003VI06      Eur.Phys.J. A 17, 483 (2003)

M.Viviani, L.E.Marcucci, A.Kievsky, S.Rosati, R.Schiavilla

Electromagnetic and weak transitions in light nuclei

NUCLEAR REACTIONS 2H(p, γ), E(cm)=2, 3.33 MeV; calculated σ(θ), analyzing powers. 3He(μ-, ν), E not given; calculated capture rate, angular correlation parameters.

doi: 10.1140/epja/i2002-10199-0
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2002CA03      Phys.Rev. C65, 024002 (2002)

J.Carlson, J.Jourdan, R.Schiavilla, I.Sick

Longitudinal and Transverse Quasielastic Response Functions of Light Nuclei

NUCLEAR REACTIONS 3,4He, 6Li(e, e'), E not given; analyzed data; deduced longitudinal and transverse response functions.

doi: 10.1103/PhysRevC.65.024002
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2002CA15      Phys.Rev. C65, 035502 (2002)

J.Carlson, R.Schiavilla, V.R.Brown, B.F.Gibson

Parity-Violating Interaction Effects: The longitudinal asymmetry in pp elastic scattering

NUCLEAR REACTIONS 1H(p, p), E=0-350 MeV; calculated parity-violating longitudinal asymmetry; deduced reaction mechanism features. Comparisons with data.

doi: 10.1103/PhysRevC.65.035502
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2002MA66      Phys.Rev. C 66, 054003 (2002)

L.E.Marcucci, R.Schiavilla, S.Rosati, A.Kievsky, M.Viviani

Theoretical study of 3He(μ-, νμ)3H capture

NUCLEAR REACTIONS 3He(μ-, ν), E not given; calculated capture rate, angular correlation parameters. Correlated hyperspherical harmonics wave function, several NN interactions compared.

NUCLEAR STRUCTURE 3H, 3He; calculated binding energies.

doi: 10.1103/PhysRevC.66.054003
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2002SC18      Phys.Rev. C65, 054302 (2002)

R.Schiavilla, R.B.Wiringa

Weak Transitions in A = 6 and 7 Nuclei

RADIOACTIVITY 6He(β-); 7Be(EC); calculated decay matrix elements, T1/2, branching ratios. Variational Monte Carlo wave functions, comparison with data.

NUCLEAR STRUCTURE 6He, 6,7Li, 7Be; calculated binding energies, radii. Variational Monte Carlo wave functions, comparison with other models and data.

doi: 10.1103/PhysRevC.65.054302
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2002SC21      Phys.Rev. C65, 064009 (2002)

R.Schiavilla, V.R.Pandharipande

Elastic e-d Scattering Data and the Deuteron Wave Function

NUCLEAR REACTIONS 2H(e, e), E not given; analyzed structure functions, tensor polarization; deduced sensitivity to deuteron wave function.

doi: 10.1103/PhysRevC.65.064009
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2001DI07      Phys.Rev. C63, 044007 (2001)

L.Diaconescu, R.Schiavilla, U.van Kolck

Parity-Violating Electron-Deuteron Scattering

NUCLEAR REACTIONS 2H(e, e'), E=193 MeV calculated σ(θ), asymmetry. Model including Z0 exchange and 1-, 2-body contributions.

doi: 10.1103/PhysRevC.63.044007
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2001MA02      Phys.Rev. C63, 015801 (2001)

L.E.Marcucci, R.Schiavilla, M.Viviani, A.Kievsky, S.Rosati, J.F.Beacom

Weak Proton Capture on 3He

NUCLEAR REACTIONS 3He(p, e+ν), E(cm)=0, 5, 10 keV; calculated astrophysical S-factors. Correlated hyperspherical harmonics method. Comparison with data.

doi: 10.1103/PhysRevC.63.015801
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2001NO01      Phys.Rev. C63, 024003 (2001)

K.M.Nollett, R.B.Wiringa, R.Schiavilla

Six-Body Calculation of the α-Deuteron Radiative Capture Cross Section

NUCLEAR REACTIONS 2H(α, γ), E < 3 MeV; calculated σ, S-factors, multipole contributions. Six-body wavefunction, variational Monte Carlo method. Astrophysical implications discussed.

doi: 10.1103/PhysRevC.63.024003
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2001SC19      Nucl.Phys. A684, 157c (2001)

R.Schiavilla

Electro-Weak Capture Reactions for Astrophysics

NUCLEAR REACTIONS 2H(p, γ), E(cm)=0-2 MeV; calculated S-factor, σ(θ). 3He(p, e+), E=0, 5, 10 keV; calculated astrophysical S-factors. Comparisons with data.

doi: 10.1016/S0375-9474(01)00410-9
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2001SC33      Nucl.Phys. A689, 84c (2001)

R.Schiavilla

Electromagnetic Structure of Few-Nucleon Systems: A critical review

doi: 10.1016/S0375-9474(01)00822-3
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2001SC38      Phys.Rev. C64, 041002 (2001)

R.Schiavilla, I.Sick

Neutron Charge Form Factor at Large q2

NUCLEAR REACTIONS 2H(e, e), E not given; analyzed quadrupole form factor data. 1n deduced charge form factor.

doi: 10.1103/PhysRevC.64.041002
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2000MA38      Phys.Rev.Lett. 84, 5959 (2000)

L.E.Marcucci, R.Schiavilla, M.Viviani, A.Kievsky, S.Rosati

Realistic Calculation of the 3He + p(hep) Astrophysical Factor

NUCLEAR REACTIONS 3He(p, e+ν), E(cm)=0, 5, 10 keV; calculated astrophysical S factor. Comparison with standard solar model.

doi: 10.1103/PhysRevLett.84.5959
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2000VI05      Phys.Rev. C61, 064001 (2000)

M.Viviani, A.Kievsky, L.E.Marcucci, S.Rosati, R.Schiavilla

Photodisintegration and Electrodisintegration of 3He at Threshold and pd Radiative Capture

NUCLEAR REACTIONS 2H(polarized p, γ), E(cm)=0-100, 2000 keV; calculated σ(θ), analyzing powers. 3He(polarized e, e'X), E not given; calculated longitudinal, transverse, and interference response functions. Comparisons with data.

doi: 10.1103/PhysRevC.61.064001
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2000WU02      Phys.Rev. C61, 021601 (2000)

E.A.Wulf, R.S.Canon, S.J.Gaff, J.H.Kelley, R.M.Prior, E.C.Schreiber, M.Spraker, D.R.Tilley, H.R.Weller, M.Viviani, A.Kievsky, S.Rosati, R.Schiavilla

New Photodisintegration Threshold Observable in 3He

NUCLEAR REACTIONS 2H(polarized p, γ), 1H(polarized d, γ), E=0-80 keV; measured σ(θ), vector and tensor analyzing powers, γ-ray polarization. 3He deduced matrix elements, sum rule features.

doi: 10.1103/PhysRevC.61.021601
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1998CA29      Rev.Mod.Phys. 70, 743 (1998)

J.Carlson, R.Schiavilla

Structure and Dynamics of Few Nucleon Systems

doi: 10.1103/RevModPhys.70.743
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1998MA78      Phys.Rev. C58, 3069 (1998)

L.E.Marcucci, D.O.Riska, R.Schiavilla

Electromagnetic Structure of Trinucleons

NUCLEAR STRUCTURE 3H, 3He; calculated charge, magnetic form factors; deduced contributions. Argonne v18 two-nucleon and Urbana IX three-nucleon interactions. Comparison with data.

doi: 10.1103/PhysRevC.58.3069
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1998SC31      Phys.Rev. C58, 1263 (1998)

R.Schiavilla, V.G.J.Stoks, W.Glockle, H.Kamada, A.Nogga, J.Carlson, R.Machleidt, V.R.Pandharipande, R.B.Wiringa, A.Kievsky, S.Rosati, M.Viviani

Weak Capture of Protons by Protons

NUCLEAR REACTIONS 1H(p, e+ν), E not given; calculated weak capture σ, axial matrix elements.

doi: 10.1103/PhysRevC.58.1263
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1998VA02      Phys.Rev.Lett. 80, 2543 (1998)

J.J.van Leeuwe, H.P.Blok, J.F.J.van den Brand, H.J.Bulten, G.E.Dodge, R.Ent, W.H.A.Hesselink, E.Jans, W.J.Kasdorp, J.M.Laget, L.Lapikas, S.I.Nagorny, C.J.G.Onderwater, A.R.Pellegrino, C.M.Spaltro, J.J.M.Steijger, R.Schiavilla, J.A.Templon, O.Unal

High-Missing-Momentum Components in the 4He(e, e'p)3H Reaction

NUCLEAR REACTIONS 4He(e, e'p), E=525 MeV; measured σ(E(e'), θ(e'), θ(p)) vs missing momentum; deduced final-state interactions, two-body currents contributions.

doi: 10.1103/PhysRevLett.80.2543
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1998WI28      Phys.Rev.Lett. 81, 4317 (1998)

R.B.Wiringa, R.Schiavilla

Microscopic Calculation of 6Li Elastic and Transition Form Factors

NUCLEAR STRUCTURE 6Li; calculated elastic, transition form factors. Variational Monte Carlo functions. Comparison with data.

doi: 10.1103/PhysRevLett.81.4317
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1997MA08      Phys.Rev. C55, 588 (1997)

L.Ma, H.J.Karwowski, C.R.Brune, Z.Ayer, T.C.Black, J.C.Blackmon, E.J.Ludwig, M.Viviani, A.Kievsky, R.Schiavilla

Measurements of 1H(d(pol), γ)3He and 2H(p(pol), γ)3He at Very Low Energies

NUCLEAR REACTIONS 1H(polarized d, γ), E(cm)=40-110 keV; 2H(polarized p, γ), E(cm)=70-210 keV; measured σ(θ), analyzing powers vs θ; deduced thermonuclear reaction rate.

doi: 10.1103/PhysRevC.55.588
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC0539.


1996FO04      Phys.Rev. C54, 646 (1996)

J.L.Forest, V.R.Pandharipande, S.C.Pieper, R.B.Wiringa, R.Schiavilla, A.Arriaga

Femtometer Toroidal Structures in Nuclei

NUCLEAR STRUCTURE 2H, 3,4He, 6,7Li, 16O; calculated two-nucleon density distribution; deduced shape features.

doi: 10.1103/PhysRevC.54.646
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1996SC14      Phys.Rev.Lett. 76, 3088 (1996)

G.J.Schmid, M.Viviani, B.J.Rice, R.M.Chasteler, M.A.Godwin, G.C.Kiang, L.L.Kiang, A.Kievsky, C.M.Laymon, R.M.Prior, R.Schiavilla, D.R.Tilley, H.R.Weller

Effects of Non-Nucleonic Degrees of Freedom in the D(p(pol), γ)3He and p(d(pol), γ)3He Reactions

NUCLEAR REACTIONS, ICPND 2H(polarized p, γ), 1H(polarized d, γ), E=80 keV; analyzed σ(θ), polarization observables, astrophysical S-factor data.

doi: 10.1103/PhysRevLett.76.3088
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC0405.


1996VI04      Phys.Rev. C54, 534 (1996)

M.Viviani, R.Schiavilla, A.Kievsky

Theoretical Study of the Radiative Capture Reactions 2H(n, γ)3H and 2H(p, γ)3He at Low Energies

NUCLEAR REACTIONS 2H(polarized p, γ), E=0-80 keV; calculated γ linear polarization vs θ, σ(θ), A(y)(θ), other polarization observables. 1H(polarized d, γ), E=0-80 keV; calculated T20(θ). Correlated hyperspherical harmonics, Δ-isobar admixtures.

doi: 10.1103/PhysRevC.54.534
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1995BE43      Phys.Rev. C52, 2601 (1995)

O.Benhar, J.Carlson, V.R.Pandharipande, R.Schiavilla

Euclidean Responses of 4He at High Momentum Transfer

NUCLEAR STRUCTURE 4He; calculated Euclidean nucleon responses at high momentum transfer. Correlated Glauber approximation, realistic interactions, nonrelativistic kinematics, Green's function Monte Carlo comparison.

doi: 10.1103/PhysRevC.52.2601
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1995FO15      Phys.Rev. C52, 576 (1995)

J.L.Forest, V.R.Pandharipande, J.Carlson, R.Schiavilla

Variational Monte Carlo Calculations of 3H and 4He with a Relativistic Hamiltonian

NUCLEAR STRUCTURE 3H, 4He; calculated one, two-body operators expectation values, relativistic Hamiltonians. Variational Monte Carlo techniques.

doi: 10.1103/PhysRevC.52.576
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1995WI02      Phys.Rev. C51, 38 (1995)

R.B.Wiringa, V.G.J.Stoks, R.Schiavilla

Accurate Nucleon-Nucleon Potential with Charge-Independence Breaking

NUCLEAR STRUCTURE 2H; calculated binding energy, D-state probability, μ, quadrupole moment, asymptotic properties, structure functions, tensor polarization. Nonrelativistic NN-potential, np, nn, pp scattering data analyzed.

doi: 10.1103/PhysRevC.51.38
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1994CA15      Phys.Rev. C49, R2880 (1994)

J.Carlson, R.Schiavilla

Inclusive Electron Scattering and Pion Degrees of Freedom in Light Nuclei

NUCLEAR REACTIONS 4He(e, e'X), E not given; calculated longitudinal, transverse responses; deduced pion degrees of freedom role.

doi: 10.1103/PhysRevC.49.R2880
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1994LO01      Phys.Rev. C49, 342 (1994)

R.J.Loucks, V.R.Pandharipande, R.Schiavilla

Pion Electroproduction on Proton and Deuteron

NUCLEAR REACTIONS 2,1H(e, e'π+), E=645 MeV; calculated σ(θ(e), E(e), θ(π), E(π)); deduced final state interactions role in 2H case. Polarized target.

doi: 10.1103/PhysRevC.49.342
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1994MU11      Phys.Rev. C50, 2173 (1994)

M.J.Musolf, R.Schiavilla, T.W.Donnelly

Many-Body Currents and the Strange-Quark Content of 4He

NUCLEAR REACTIONS 4He(polarized e, e), E not given; calculated parity violating asymmetry; deduced meson exchange currents, strange quark content roles. Monte Carlo techniques, variational approach.

doi: 10.1103/PhysRevC.50.2173
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1994PA03      Phys.Rev. C49, 789 (1994)

V.R.Pandharipande, J.Carlson, S.C.Pieper, R.B.Wiringa, R.Schiavilla

Isovector Spin-Longitudinal and -Transverse Response of Nuclei

NUCLEAR STRUCTURE 2H, 4He, 16O; calculated two-body density, sum, energy-weighted sum of isovector spin-longitudinal, -transverse responses. Realistic interactions.

doi: 10.1103/PhysRevC.49.789
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1994RE04      Phys.Rev. C49, 1263 (1994)

G.A.Retzlaff, H.S.Caplan, E.L.Hallin, D.M.Skopik, D.Beck, K.I.Blomqvist, G.Dodson, K.Dow, M.Farkhondeh, J.Flanz, S.Kowalski, W.W.Sapp, C.P.Sargent, D.Tieger, W.Turchinetz, C.F.Williamson, W.Dodge, X.K.Maruyama, J.W.Lightbody, Jr., R.Goloskie, J.McCarthy, T.S.Ueng, R.R.Whitney, B.Quinn, S.Dytman, K.Von Reden, R.Schiavilla, J.A.Tjon

Threshold Electrodisintegration in the A = 3 System

NUCLEAR REACTIONS 3He, 3H(e, e'X), E not given; measured double differential σ; deduced, analyzed longitudinal, transverse response functions. Models comparison.

doi: 10.1103/PhysRevC.49.1263
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1993CA05      Phys.Rev. C47, 484 (1993)

J.Carlson, V.R.Pandharipande, R.Schiavilla

Variational Monte Carlo Calculations of 3H and 4He with a Relativistic Hamiltonian

NUCLEAR STRUCTURE 3H, 4He; calculated binding energy. Variational Monte Carlo, relativistic Hamiltonian.

doi: 10.1103/PhysRevC.47.484
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1993SC17      Phys.Rev.Lett. 70, 3856 (1993)

R.Schiavilla, R.B.Wiringa, J.Carlson

Coulomb Sum and Proton-Proton Correlations in Few-Body Nuclei

NUCLEAR STRUCTURE 3,4He, 3H; calculated longitudinal-longitudinal distribution function.

doi: 10.1103/PhysRevLett.70.3856
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1992CA18      Phys.Rev.Lett. 68, 3682 (1992)

J.Carlson, R.Schiavilla

Euclidean Proton Response in Light Nuclei

NUCLEAR STRUCTURE 4He; calculated Euclidean, longitudinal response functions. Green's function Monte Carlo, realistic Hamiltonian, two-, three-nucleon potential models, final-state interactions.

doi: 10.1103/PhysRevLett.68.3682
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1992SC12      Phys.Rev. C45, 2628 (1992)

R.Schiavilla, R.B.Wiringa, V.R.Pandharipande, J.Carlson

Effects of Δ-Isobar Degrees of Freedom on Low-Energy Electroweak Transitions in Few-Body Nuclei

NUCLEAR STRUCTURE 3H(β-); calculated different contributions to Gamow-Teller matrix element. Variational wave functions with Δ-isobar components.

NUCLEAR REACTIONS 3He(n, γ), E=thermal; calculated different contributions to the radiative capture reaction. 3He(p, e+ν), E not given; calculated weak capture reaction matrix element. Variational wave functions with Δ-isobar components.

doi: 10.1103/PhysRevC.45.2628
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1991AR01      Phys.Rev. C43, 983 (1991)

A.Arriaga, V.R.Pandharipande, R.Schiavilla

Variational Monte Carlo Calculations of the 2H(d, γ)4He Reaction at Low Energies

NUCLEAR REACTIONS 2H(d, γ), E=100 keV; calculated σ(E), astrophysical S-factor vs E. Variational Monte Carlo methods.

doi: 10.1103/PhysRevC.43.983
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1991CA16      Phys.Rev. C44, 619 (1991)

J.Carlson, D.O.Riska, R.Schiavilla, R.B.Wiringa

Weak Proton Capture Reactions on 1H and 3He and Tritium β Decay

NUCLEAR REACTIONS 3He, 1H(p, e+ν), E=low; calculated weak capture σ; deduced exchange contribution role. Realistic wave function.

doi: 10.1103/PhysRevC.44.619
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1991SC01      Phys.Rev. C43, 437 (1991)

R.Schiavilla, D.O.Riska

Threshold Electrodisintegration and Electromagnetic Form Factors of the Deuteron

NUCLEAR REACTIONS 2H(e, X), E=threshold; calculated disintegration σ vs momentum transfer square.

NUCLEAR STRUCTURE 2H; calculated electromagnetic form factors, tensor polarization. Electron scattering data input.

doi: 10.1103/PhysRevC.43.437
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