NSR Query Results
Output year order : Descending NSR database version of April 27, 2024. Search: Author = L.Girlanda Found 41 matches. 2023GI08 Phys.Rev. C 107, L061001 (2023) L.Girlanda, E.Filandri, A.Kievsky, L.E.Marcucci, M.Viviani Effect of the N3LO three-nucleon contact interaction on p-d scattering observables NUCLEAR REACTIONS 1H(d, d), 2H(p, p), E(cm)=2 MeV; calculated proton and deuteron analyzing power, tensor observables, σ(θ). Chiral effective field theory with AV18 2N potential. Expression of short-range component in terms of five combinations of low-energy constants (LECs) parameterizing the N3LO 2N contact Lagrangian. Comparison to experimental data.
doi: 10.1103/PhysRevC.107.L061001
2023NA32 Eur.Phys.J. A 59, 293 (2023) A.Nasoni, E.Filandri, L.Girlanda Relativistic constraints on 3N contact interactions
doi: 10.1140/epja/s10050-023-01185-3
2023VI02 Phys.Rev.Lett. 130, 122501 (2023) M.Viviani, L.Girlanda, A.Kievsky, D.Logoteta, L.E.Marcucci Theoretical Study of the d(d, p)3H and d(d, n)3H Processes at Low Energies NUCLEAR REACTIONS 2H(d, p), (d, n), E(cm)<1 MeV; analyzed available data; deduced astrophysical S factor, the quintet suppression factor, single and double polarized observables, first estimate of the theoretical uncertainty for all these quantities.
doi: 10.1103/PhysRevLett.130.122501
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
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
2020GI08 Phys.Rev. C 102, 064003 (2020) L.Girlanda, A.Kievsky, L.E.Marcucci, M.Viviani Unitary ambiguity of NN contact interactions and the 3N force
doi: 10.1103/PhysRevC.102.064003
2020VI07 Phys.Rev. C 102, 034007 (2020) M.Viviani, L.Girlanda, A.Kievsky, L.E.Marcucci n + 3H, p + 3He, p + 3H and n + 3He scattering with the hyperspherical harmonic method NUCLEAR REACTIONS 3H(n, X), E<10 MeV; calculated total σ(E). 3He(p, p), E=2-6 MeV; calculated phase shifts. 3He(p, p), (polarized p, p), E=2.25, 4.05, 5.54 MeV; calculated differential σ(θ, E), analyzing powers Ay(θ, E), spin polarization coefficients. 3H(p, p), (p, n), E(cm)<3.5 MeV; calculated phase shifts as function of the center-of-mass kinetic energy, energies and widths of resonances. 3H(p, p), (polarized p, p), E=0.4, 0.6, 1.16, 2.0, 3.0, 4.17 MeV; 3H(n, n), (polarized n, n), E=1, 2, 3.5 MeV; 3H(p, n), (polarized p, n), E=2.5, 3.5, 4.15 MeV; calculated differential σ(θ, E), analyzing powers, and relevant model parameters. Hyperspherical harmonic (HH) method with nuclear Hamiltonians of two- and three-nucleon NN N3LO and 3N N2LO interactions. Comparison with experimental data. Application of HH method to the 4N scattering problem.
doi: 10.1103/PhysRevC.102.034007
2019GI08 Phys.Rev. C 99, 054003 (2019) L.Girlanda, A.Kievsky, M.Viviani, L.E.Marcucci Short-range three-nucleon interaction from A = 3 data and its hierarchical structure NUCLEAR REACTIONS 2H(p, p), E=0.647, 1.0, 2.0, 2.5, 3.0 MeV; analyzed experimental data for differential σ(θ, E), Ay(θ, E), iT11(θ, E), T20(θ, E) and T21(θ, E) polarization observables using a hybrid phenomenological approach; deduced accurate models of the three-nucleon (3N) interaction by fitting the low-energy constants (LECs) to the triton binding energy, n-d scattering lengths, cross sections, and polarization observables of p-d scattering.
doi: 10.1103/PhysRevC.99.054003
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
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
2018KI09 Phys.Rev.Lett. 121, 072701 (2018) A.Kievsky, M.Viviani, D.Logoteta, I.Bombaci, L.Girlanda Correlations imposed by the unitary limit between few-nucleon systems, nuclear matter, and neutron stars
doi: 10.1103/PhysRevLett.121.072701
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
2018VI01 Few-Body Systems 59, 73 (2018) M.Viviani, L.Girlanda, A.Kievsky, L.E.Marcucci, J.Dohet-Eraly Three-nucleon force effects in A=4 scattering NUCLEAR REACTIONS 3H(p, X)4He, E<3 MeV; calculated phase shift, σ(θ). Comparison with available data.
doi: 10.1007/s00601-018-1379-6
2017KI01 Phys.Rev. C 95, 024001 (2017) A.Kievsky, M.Viviani, M.Gattobigio, L.Girlanda Implications of Efimov physics for the description of three and four nucleons in chiral effective field theory NUCLEAR STRUCTURE 3H, 4He; calculated binding energies as function of regulator β for different values of the potential range, and compared with results form SU(4) symmetry. Chiral effective field theory with the leading order (LO) nucleon-nucleon potential, and the one-pion-exchange potential (OPEP).
doi: 10.1103/PhysRevC.95.024001
2017VI04 Few-Body Systems 58, 110 (2017) M.Viviani, L.Girlanda, A.Kievsky, L.E.Marcucci Three-Nucleon Force Effects in p-3H and n-3He Scattering NUCLEAR REACTIONS 3H(p, p), 3He(n, n), E<5 MeV; analyzed available data; calculated σ(θ) using N3LO500 model.
doi: 10.1007/s00601-017-1264-8
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
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
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
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
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
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
2013VI05 Phys.Rev.Lett. 111, 172302 (2013) M.Viviani, L.Girlanda, A.Kievsky, L.E.Marcucci Effect of Three-Nucleon Interactions in p-3He Elastic Scattering NUCLEAR REACTIONS 3He(p, p), E<6 MeV; calculated σ(θ), polarization. Three-nucleon interaction, comparison with experimental data.
doi: 10.1103/PhysRevLett.111.172302
2011GI01 Few-Body Systems 49, 51 (2011) Relativistic Covariance of the 2-Nucleon Contact Interactions
doi: 10.1007/s00601-010-0185-6
2011GI04 Phys.Rev. C 84, 014001 (2011); Erratum Phys.Rev. C 102, 019903 (2020) L.Girlanda, A.Kievsky, M.Viviani Subleading contributions to the three-nucleon contact interaction
doi: 10.1103/PhysRevC.84.014001
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
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
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
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
2010KI05 Phys.Rev. C 81, 044003 (2010) A.Kievsky, M.Viviani, L.Girlanda, L.E.Marcucci Comparative study of three-nucleon force models in A=3, 4 systems NUCLEAR STRUCTURE 3H, 4He; calculated binding energies, n-d doublet scattering length, and triton kinetic energy using AV18+TM', AV18+URIX, and AV18+N2LOL potentials. Three nucleon-force models. NUCLEAR REACTIONS 2H(polarized p, p), E=3 MeV; calculated σ(θ), A(y)(θ), iT11(θ), T20(θ), T21(θ), and T22(θ) using the AV18+TM', AV18+URIX, and AV18+N2LOL models. Comparison with experimental data.
doi: 10.1103/PhysRevC.81.044003
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
2009MA53 Phys.Rev. C 80, 034003 (2009) L.E.Marcucci, A.Kievsky, L.Girlanda, S.Rosati, M.Viviani N-d elastic scattering using the hyperspherical harmonics approach with realistic local and nonlocal interactions NUCLEAR REACTIONS 2H(n, n), (p, p), (polarized n, n), (polarized p, p), E(cm)=0.266-2.0 MeV; calculated scattering lengths, differential σ, σ(θ), vector and tensor analyzing powers using hyperspherical harmonic (HH) approach and two- and three-nucleon interactions (Argonne v18, N3LO-Idaho, Vlow-k, Urbana IX, N2LO). Comparisons with experimental data.
doi: 10.1103/PhysRevC.80.034003
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
2008GI04 Phys.Rev. C 77, 067001 (2008) Redundancy in the parity-violating 2-nucleon contact Lagrangian
doi: 10.1103/PhysRevC.77.067001
2008KI08 J.Phys.(London) G35, 063101 (2008) A.Kievsky, S.Rosati, M.Viviani, L.E.Marcucci, L.Girlanda A high-precision variational approach to three- and four-nucleon bound and zero-energy scattering states
doi: 10.1088/0954-3899/35/6/063101
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
2007GI15 Phys.Rev. C 76, 044002 (2007) L.Girlanda, M.Viviani, W.H.Klink Bakamjian-Thomas mass operator for few-nucleon systems from chiral dynamics
doi: 10.1103/PhysRevC.76.044002
2007VI12 Nucl.Phys. A790, 46c (2007) M.Viviani, L.Girlanda, A.Kievsky, L.E.Marcucci, S.Rosati Bound and scattering states with non-local potentials NUCLEAR STRUCTURE 3H, 4He; calculated binding energies, radii, related features. Hyperspherical harmonic approach.
doi: 10.1016/j.nuclphysa.2007.03.054
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
2006VI05 Few-Body Systems 39, 159 (2006) M.Viviani, L.E.Marcucci, S.Rosati, A.Kievsky, L.Girlanda Variational Calculation on A = 3 and 4 Nuclei with Non-Local Potentials NUCLEAR STRUCTURE 3H, 3,4He; calculated binding energies, radii, related features. Hyperspherical harmonic approach, non-local two-body potentials.
doi: 10.1007/s00601-006-0158-y
2005GI10 Nucl.Phys. A755, 653c (2005) L.Girlanda, A.Rusetsky, W.Weise The π-nucleus optical potential to O(p5) in Chiral Perturbation Theory
doi: 10.1016/j.nuclphysa.2005.03.079
2004GI04 Ann.Phys.(New York) 312, 92 (2004) L.Girlanda, A.Rusetsky, W.Weise Chiral perturbation theory in a nuclear background
doi: 10.1016/j.aop.2004.01.010
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