NSR Query Results
Output year order : Descending NSR database version of April 27, 2024. Search: Author = R.Lazauskas Found 41 matches. 2023DU12 Phys.Rev. C 108, 054003 (2023) P.-Y.Duerinck, R.Lazauskas, J.Dohet-Eraly Antiproton-deuteron hydrogenic states from a coupled-channel approach
doi: 10.1103/PhysRevC.108.054003
2023LA03 Phys.Rev.Lett. 130, 102501 (2023) R.Lazauskas, E.Hiyama, J.Carbonell Low Energy Structures in Nuclear Reactions with 4n in the Final State NUCLEAR STRUCTURE 8He, 2,4NN; calculated strength and low energy four-neutron response functions with the AV18 nn interaction, low energy 4n response functions for the scaled nn MT13 potential; deduced the sharp low energy peak observed by studying the missing mass spectra of four neutrons as a consequence of dineutron-dineutron correlations.
doi: 10.1103/PhysRevLett.130.102501
2022AU03 Eur.Phys.J. A 58, 88 (2022) T.Aumann, W.Bartmann, O.Boine-Frankenheim, A.Bouvard, A.Broche, F.Butin, D.Calvet, J.Carbonell, P.Chiggiato, H.De Gersem, R.De Oliveira, T.Dobers, F.Ehm, J.Ferreira Somoza, J.Fischer, M.Fraser, E.Friedrich, A.Frotscher, M.Gomez-Ramos, J.-L.Grenard, A.Hobl, G.Hupin, A.Husson, P.Indelicato, K.Johnston, C.Klink, Y.Kubota, R.Lazauskas, S.Malbrunot-Ettenauer, N.Marsic, W.F.O Muller, S.Naimi, N.Nakatsuka, R.Necca, D.Neidherr, G.Neyens, A.Obertelli, Y.Ono, S.Pasinelli, N.Paul, E.C.Pollacco, D.Rossi, H.Scheit, M.Schlaich, A.Schmidt, L.Schweikhard, R.Seki, S.Sels, E.Siesling, T.Uesaka, M.Vilen, M.Wada, F.Wienholtz, S.Wycech, S.Zacarias PUMA, antiProton unstable matter annihilation
doi: 10.1140/epja/s10050-022-00713-x
2022HI06 Phys.Lett. B 833, 137367 (2022) E.Hiyama, R.Lazauskas, J.Carbonell 7H ground state as a 3H+4n resonance NUCLEAR STRUCTURE 3,4,5,7H, 4NN; analyzed available data; calculated S- and P-wave n-t phase shifts, resonant states, energy trajectories, eigenvalues of the 7H hamiltonian as a function of the stabilization parameter. The solution of the 5-body Schrodinger equation has been obtained by means of the variational Gaussian expansion approach and the resonance parameters.
doi: 10.1016/j.physletb.2022.137367
2022HI10 Phys.Rev. C 106, 064001 (2022) E.Hiyama, R.Lazauskas, J.Carbonell, T.Frederico Scaling of the 19B two-neutron halo properties close to unitarity NUCLEAR STRUCTURE 19B; calculated rms radii, S(2n), ground-state energy, n-17B scattering length, rms relative separation distances in the 17B+n+n system. Faddeev equation formalism in configuration space with Gaussian expansion method are used for solving three-body problem. Calculations with charge independent Bonn-A and charge dependent AV18 nn-interactions.
doi: 10.1103/PhysRevC.106.064001
2021LA14 Phys.Lett. B 820, 136573 (2021), Erratum Phys.Lett. B 841, 137936 (2023) Antiproton-deuteron hydrogenic states in optical models
doi: 10.1016/j.physletb.2021.136573
2019DE27 Phys.Rev. C 100, 044002 (2019) Tetraneutron resonance in the presence of a dineutron NUCLEAR REACTIONS 2n(2n, 2n)4n; calculated dineutron scattering phase shifts and cross sections by solving exact four-particle continuum using Faddeev-Yakubovsky (FY) and Alt, Grassberger, and Sandhas (AGS) equations, and by varying the interaction enhancement factor; deduced bound tetraneutron as a virtual 0+ state.
doi: 10.1103/PhysRevC.100.044002
2019HI05 Phys.Rev. C 100, 011603 (2019) E.Hiyama, R.Lazauskas, F.M.Marques, J.Carbonell Modeling 19B as a 17B - n - n three-body system in the unitary limit NUCLEAR STRUCTURE 19B; calculated n-17B scattering length, radial potential, ground state energy and probability amplitude of ground state using three-body (17B-n-n) system model, with the two-body subsystems 17B-n and n-n as unbound (virtual) states close to the unitary limit. Discussed link with the Efimov physics, and possibility to explain recently discovered resonant states in 20,21B.
doi: 10.1103/PhysRevC.100.011603
2019LA07 Phys.Lett. B 791, 335 (2019) R.Lazauskas, E.Hiyama, J.Carbonell Ab initio calculations of 5H resonant states NUCLEAR STRUCTURE 5H; calculated resonant states, J, π using the 5-body Faddeev-Yakubovsky equations in configuration space with realistic nuclear Hamiltonians.
doi: 10.1016/j.physletb.2019.02.047
2019LA11 Phys.Rev. C 99, 054002 (2019) Parity-violating neutron spin rotation in 4He NUCLEAR REACTIONS 4He(n, n), E(cm)=0-10 MeV; calculated S- and P-wave scattering phase shifts and scattering lengths; deduced parity-violating neutron spin rotation in 4He at vanishing incident neutron energy limit. 4He; calculated binding energy. Five-body Faddeev-Yakubovsky equations in configuration space using strong-interaction Hamiltonian based on chiral perturbation theory including three-nucleon force, with parity-violating nucleon-nucleon interaction of Desplanques, Donoghue, and Holstein model. Comparison with experimental data. Relevance to theoretical estimates of weak couplings.
doi: 10.1103/PhysRevC.99.054002
2018LA05 Phys.Rev. C 97, 044002 (2018) Solution of the n - 4He elastic scattering problem using the Faddeev-Yakubovsky equations NUCLEAR STRUCTURE 3,4He; calculated binding energies of ground states using the basis limitations in the present work, and considerably larger size of the Lagrange-mesh basis, and compared with literature values. NUCLEAR REACTIONS 4He(n, n), E(cm)=0-10 MeV; calculated scattering phase shifts using I-N3LO, AV18, and INOY04 realistic NN interaction Hamiltonians, with five-body Faddeev-Yakubovsky equations. Comparison with results from NCSMC method and R-matrix analysis of experimental data.
doi: 10.1103/PhysRevC.97.044002
2017CA16 Few-Body Systems 58, 67 (2017) J.Carbonell, R.Lazauskas, E.Hiyama, M.Kamimura On the Possible Existence of Four Neutron Resonances NUCLEAR REACTIONS 3He(n, n), E=0.03-10 MeV;3He(n, x), E not given; calculated possible tetraneutron resonance trajectory for 0+ state; deduced resonance, σ, resonance energy and width vs other parameters, higher 4n resonances, tetraneutron production response function via double charge exchange; deduced parameters.
doi: 10.1007/s00601-017-1219-0
2017LA11 Prog.Theor.Exp.Phys. 2017, 073D03 (2017) R.Lazauskas, J.Carbonell, E.Hiyama Modeling the double charge exchange response function for a tetraneutron system NUCLEAR REACTIONS 4He(8He, 8Be)4NN, E<8 MeV; analyzed available data; calculated σ, response functions, 4n resonance trajectory.
doi: 10.1093/ptep/ptx078
2017SO16 Phys.Rev. C 96, 024002 (2017); Erratum Phys.Rev. C 100, 019901 (2019) Y.-H.Song, R.Lazauskas, U.van Kolck Triton binding energy and neutron-deuteron scattering up to next-to-leading order in chiral effective field theory NUCLEAR REACTIONS 2H(n, X), E=5 MeV-10 GeV; analyzed cutoff dependence of three-nucleon observables: the quartet and doublet neutron-deuteron scattering lengths, phase shifts, and the triton binding energy at the leading and next-to-leading orders using Chiral Effective Field Theory. 3H; analyzed triton binding energy.
doi: 10.1103/PhysRevC.96.024002
2017VI03 Phys.Rev. C 95, 034003 (2017) M.Viviani, A.Deltuva, R.Lazauskas, A.C.Fonseca, A.Kievsky, L.E.Marcucci Benchmark calculation of p - 3H and n-3He scattering NUCLEAR REACTIONS 3H(polarized n, n), E=1.0, 2.0, 3.5 MeV; 3H(polarized p, p), 3H(polarized p, n)3He, E=2.5, 3.5, 4.15 MeV; calculated differential σ(E), neutron, proton and 3He analyzing powers, spin-correlation coefficient using N3LO500 potential. Calculations used three techniques for elastic and charge-exchange processes: Alt, Grassberger, Sandhas (AGS), hyperspherical harmonics (HH), and Faddeev-Yakubovsky (FY). Comparison with experimental data.
doi: 10.1103/PhysRevC.95.034003
2016HI03 Phys.Rev. C 93, 044004 (2016) E.Hiyama, R.Lazauskas, J.Carbonell, M.Kamimura Possibility of generating a 4-neutron resonance with a T=3/2 isospin 3-neutron force NUCLEAR STRUCTURE 4n; calculated narrow resonant states of tetraneutron for Jπ=0+, 2+ and 2-. 4H, 4He, 4Li; calculated energies of the lowest T=1, Jπ=2- states. 3n; calculated resonance trajectories for Jπ=3/2-, 1/2- and 1/2+ states. Complex scaling method (CSM) for resonance positions and widths. Gaussian expansion method used to solve Schrodinger equation and Lagrange-mesh technique to solve Faddeev-Yakubovsky (FY) equation. Comparison with recent experimental data from RIKEN.
doi: 10.1103/PhysRevC.93.044004
2016SO08 Phys.Rev. C 93, 065501 (2016) Y.-H.Song, R.Lazauskas, V.Gudkov Time reversal invariance violating and parity conserving effects in proton-deuteron scattering NUCLEAR REACTIONS 2H(p, p), E(cm)=0.015-2 MeV; 2H(n, n), E(cm)=100 keV; calculated scattering amplitudes as function of incident energy; deduced time reversal invariance violating parity conserving (TVPC) effects. Distorted-wave Born approximation (DWBA) to estimate TVPC matrix elements, and hadronic wave functions from solution of three-body Faddeev-Merkuriev equations.
doi: 10.1103/PhysRevC.93.065501
2015LA09 Phys.Rev. C 91, 041001 (2015) Modern nuclear force predictions for n - 3H scattering above the three- and four-nucleon breakup thresholds NUCLEAR REACTIONS 3H(n, n), (n, n'), E=14.1, 18, 22.1 MeV; calculated elastic observables and total breakup cross sections, phase shifts, inelasticity parameters, integrated elastic, breakup, and total σ(E), σ(θ) and neutron analyzing power Ay(θ) for elastic scattering at 22.1 MeV, dependence of the calculated total elastic and inelastic (breakup) cross sections on the triton binding energy. Little sensitivity to the short-range details of NN interaction. Complex-scaling method with the four-nucleon system described in configuration space by Faddeev-Yakubovsky equations. Comparison with experimental data.
doi: 10.1103/PhysRevC.91.041001
2013MO41 Ann.Nucl.Energy 54, 167 (2013) B.Morillon, R.Lazauskas, J.Carbonell Influence of the ab initio n-d cross sections in the critical heavy-water benchmarks
doi: 10.1016/j.anucene.2012.06.032
2013SO04 Phys.Rev. C 87, 015501 (2013) Y.-H.Song, R.Lazauskas, V.Gudkov Nuclear electric dipole moment of three-body systems NUCLEAR STRUCTURE 3H, 3He; calculated electric dipole moments (EDM) Faddeev equations in configuration space with Time reversal invariance violation (TRIV) potentials based on meson exchange. Comparison with previous calculations.
doi: 10.1103/PhysRevC.87.015501
2012LA13 Eur.Phys.J. A 48, 87 (2012) J.-M.Laborie, X.Ledoux, C.Varignon, R.Lazauskas, B.Morillon, G.Belier Measurement of the neutron-induced deuteron breakup reaction cross-section between 5 and 25 MeV NUCLEAR REACTIONS 2H(n, 2n), E=6.8, 7.8, 20-25 MeV; measured En, In, nn-coin; deduced neutron multiplicity, σ(En, θ), σ. Compared with other data, ENDF/B-VII and published ab initio calculations of the authors with different potentials.
doi: 10.1140/epja/i2012-12087-4
2012LA24 Phys.Rev. C 86, 044002 (2012) Application of the complex-scaling method to four-nucleon scattering above break-up threshold
doi: 10.1103/PhysRevC.86.044002
2012SO17 Phys.Rev. C 86, 045502 (2012) Y.-H.Song, R.Lazauskas, V.Gudkov Parity violation in radiative neutron capture on the deuteron
doi: 10.1103/PhysRevC.86.045502
2011LA04 Phys.Rev. C 83, 034006 (2011), Publishers Note Phys.Rev. C 83, 049901 (2011) R.Lazauskas, Y.Song, T.-S.Park Heavy-baryon chiral perturbation theory approach to thermal neutron capture on 3He NUCLEAR REACTIONS 3He(n, α), E=thermal; calculated total cross section using current operator from heavy-baryon chiral perturbation theory. Comparison with experimental data.
doi: 10.1103/PhysRevC.83.034006
2011LA15 Phys.Rev. C 84, 034002 (2011) Application of the complex-scaling method to few-body scattering
doi: 10.1103/PhysRevC.84.034002
2011LA21 Phys.Rev. C 84, 064318 (2011) Description of 3α-bosonic states in the 12C nucleus with local and nonlocal potentials NUCLEAR STRUCTURE 12C; calculated level energies, J, π, total widths, root-mean-square (rms) radius, ground-state and Hoyle-state rotational bands, 0+ condensate state energies, 3α positive-parity and negative-parity resonances, Kπ=3- band. Nonmicroscopic a-particle model involving local and nonlocal potentials, Faddeev equations to solve three-body problem for bound and resonant states. Comparison with experimental data.
doi: 10.1103/PhysRevC.84.064318
2011SO02 Phys.Rev. C 83, 015501 (2011) Parity violation in low-energy neutron-deuteron scattering NUCLEAR REACTIONS 2H(n, n'), E=15 keV; calculated neutron spin asymmetry and neutron spin rotation using effective field theory in a distorted-wave Born approximation, for weak interactions with realistic three-nucleon wave functions from the Faddeev equations in configuration space, Discussed parity-violating effects.
doi: 10.1103/PhysRevC.83.015501
2011SO15 Phys.Rev. C 83, 065503 (2011) Y.-H.Song, R.Lazauskas, V.Gudkov Time reversal invariance violation in neutron-deuteron scattering NUCLEAR REACTIONS 2H(n, n), E not given; calculated Time reversal invariance-violating (TRIV) effects using meson exchange and EFT-type TRIV potentials in a distorted-wave Born approximation; discussed relation between TRIV and parity-violating observables.
doi: 10.1103/PhysRevC.83.065503
2011SO21 Phys.Rev. C 84, 025501 (2011) Time reversal invariance violating and parity conserving effects in neutron-deuteron scattering
doi: 10.1103/PhysRevC.84.025501
2011VI06 Phys.Rev. C 84, 054010 (2011) M.Viviani, A.Deltuva, R.Lazauskas, J.Carbonell, A.C.Fonseca, A.Kievsky, L.E.Marcucci, S.Rosati Benchmark calculation of n-3H and p-3He scattering NUCLEAR REACTIONS 3He(p, p), E=2.25, 4.05, 5.54 MeV; 3H(n, n), E=1.0, 2.0, 3.5, 6.0 MeV; analyzed phase shifts, mixing parameters, total cross sections, differential σ(θ), neutron and triton analyzing powers using AGS, HS, and FY methods with I-N3LO, Argonne v18, CD Bonn interactions for four-nucleon problem.
doi: 10.1103/PhysRevC.84.054010
2009LA10 Phys.Rev. C 79, 054007 (2009) Elastic proton scattering on tritium below the n-3He threshold NUCLEAR REACTIONS 3H(p, p), E=0-1 MeV; calculated scattering lengths, σ(θ). Faddeev-Yakubovski equations.
doi: 10.1103/PhysRevC.79.054007
2009SO06 Phys.Rev. C 79, 051301 (2009) T.Sogo, R.Lazauskas, G.Ropke, P.Schuck Critical temperature for α-particle condensation within a momentum-projected mean-field approach
doi: 10.1103/PhysRevC.79.051301
2009SO10 Phys.Rev. C 79, 064002 (2009) Y.-H.Song, R.Lazauskas, T.-S.Park Up to N3LO heavy-baryon chiral perturbation theory calculation for the M1 properties of three-nucleon systems NUCLEAR STRUCTURE 3H, 3He; calculated M1 properties, magnetic moments, deuteron binding energy, np scattering length, and observables of radiative capture of thermal neutron by proton and deuteron in two- and three-nucleon systems using heavy baryon chiral perturbation theory of Weinberg and meson exchange currents derived up to L3NO. Comparison with experimental data.
doi: 10.1103/PhysRevC.79.064002
2008LA03 J.Phys.(London) G35, 025001 (2008) Charged current cross section for massive cosmological neutrinos impinging on radioactive nuclei
doi: 10.1088/0954-3899/35/2/025001
2007LA27 Nucl.Phys. A792, 219 (2007) Neutrino beams as a probe of the nuclear isospin and spin-isospin excitations NUCLEAR REACTIONS 16O, 56Fe, 100Mo, 208Pb(ν, X), (ν-bar, X), E=7.5-100 MeV; calculated σ; analyzed contribution of positive and negative parity states to σ. Quasi-particle RPA.
doi: 10.1016/j.nuclphysa.2007.06.005
2007SO17 Phys.Lett. B 656, 174 (2007) Y.-H.Song, R.Lazauskas, T.-S.Park, D.-P.Min Effective field theory approach for the M1 properties of A = 2 and 3 nuclei NUCLEAR STRUCTURE 2,3H, 3He; calculated μ, binding energies with a variational Monte Carlo method.
doi: 10.1016/j.physletb.2007.09.038
2005LA06 Phys.Rev. C 71, 034004 (2005) R.Lazauskas, J.Carbonell, A.C.Fonseca, M.Viviani, A.Kievsky, S.Rosati Low energy n-3H scattering: A novel testground for nuclear interactions NUCLEAR REACTIONS 3H(n, n), E(cm)=0.1-5 MeV; calculated phase shifts, total σ. Three methods compared.
doi: 10.1103/PhysRevC.71.034004
2005LA11 Phys.Rev. C 71, 044004 (2005) Three-neutron resonance trajectories for realistic interaction models NUCLEAR STRUCTURE 3n; calculated resonance trajectories.
doi: 10.1103/PhysRevC.71.044004
2005LA27 Phys.Rev. C 72, 034003 (2005) Is a physically observable tetraneutron resonance compatible with realistic nuclear interactions? NUCLEAR STRUCTURE 4n; calculated resonance energies; deduced no observable state. Faddeev-Yakubovski equations, realistic interactions, complex scaling and analytical continuation in the coupling constant.
doi: 10.1103/PhysRevC.72.034003
2004LA16 Few-Body Systems 34, 105 (2004) Ab-Initio Calculations of Four-Nucleon Elastic Scattering NUCLEAR REACTIONS 3H(n, n), E(cm)=2.625 MeV; 3He(p, p), E(cm)=4.1325 MeV; calculated σ(θ). 3H(n, n), E < 10 MeV; calculated total σ. 3He(p, p), E(cm) < 0.6 MeV; calculated σ(E, θ=120°). Faddeev-Yakubovski equations, comparison with data.
doi: 10.1007/s00601-004-0049-z
2004LA22 Phys.Rev. C 70, 044002 (2004) Testing nonlocal nucleon-nucleon interactions in four-nucleon systems NUCLEAR STRUCTURE 3H, 3,4He; calculated binding energies, radii, partial wave contributions. 4He calculated continuum states features. Fadeev-Yakubovski equations, nonlocal nucleon-nucleon interaction models. NUCLEAR REACTIONS 3H(n, X), E=0.1-10 MeV; calculated scattering lengths, phase shifts, total σ. Fadeev-Yakubovski equations, nonlocal nucleon-nucleon interaction models.
doi: 10.1103/PhysRevC.70.044002
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