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NSR database version of April 11, 2024.

Search: Author = S.Pastore

Found 32 matches.

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2023AN15      J.Phys.(London) G50, 120501 (2023)

A.M.Ankowski, A.Ashkenazi, S.Bacca, J.L.Barrow, M.Betancourt, A.Bodek, M.E.Christy, L.Doria, S.Dytman, A.Friedland, O.Hen, C.J.Horowitz, N.Jachowicz, W.Ketchum, T.Lux, K.Mahn, C.Mariani, J.Newby, V.Pandey, A.Papadopoulou, E.Radicioni, F.Sanchez, C.Sfienti, J.M.Udias, L.Weinstein, L.Alvarez-Ruso, J.E.Amaro, C.A.Arguelles, A.B.Balantekin, S.Bolognesi, V.Brdar, P.Butti, S.Carey, Z.Djurcic, O.Dvornikov, S.Edayath, S.Gardiner, J.Isaacson, W.Jay, A.Klustova, K.S.McFarland, A.Nikolakopoulos, A.Norrick, S.Pastore, G.Paz, M.H.Reno, I.Ruiz Simo, J.E.Sobczyk, A.Sousa, N.Toro, Y.-D.Tsai, M.Wagman, J.G.Walsh, G.Yang

Electron scattering and neutrino physics

doi: 10.1088/1361-6471/acef42
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2023KI04      Phys.Rev. C 107, 015503 (2023)

G.B.King, A.Baroni, V.Cirigliano, S.Gandolfi, L.Hayen, E.Mereghetti, S.Pastore, M.Piarulli

Ab initio calculation of the β-decay spectrum of 6He

RADIOACTIVITY 6He(β-); calculated T1/2, β-decay energy spectrum, corrections to the β-decay spectrum induced by beyond-standard-model charged-current interactions in the standard model effective field theory, with and without sterile neutrinos. Quantum Monte Carlo methods with nuclear interactionsderived from chiral effective field theory and consistent weak vector and axial currents. Comparison to available experimental data.

doi: 10.1103/PhysRevC.107.015503
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2023PI01      Phys.Rev. C 107, 014314 (2023)

M.Piarulli, S.Pastore, R.B.Wiringa, S.Brusilow, R.Lim

Densities and momentum distributions in A ≤ 12 nuclei from chiral effective field theory interactions

NUCLEAR STRUCTURE 3H, 3,4,8He, 6,7Li, 9Be, 10B, 12C; calculated one-body neutron and proton densities, relative-distance np and pp pair densities, total number of spin-isospin pairs, total one-body neutron and proton momentum distributions, total np and pp momentum distributions, ratio of np and pp pairs as function of relative momentum. Variational Monte Carlo calculations with AV18+UX phenomenological three-nucleon interactions.

doi: 10.1103/PhysRevC.107.014314
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2022AN04      Phys.Rev. C 105, 014002 (2022)

L.Andreoli, J.Carlson, A.Lovato, S.Pastore, N.Rocco, R.B.Wiringa

Electron scattering on A=3 nuclei from quantum Monte Carlo based approaches

NUCLEAR REACTIONS 3H(e, e), (e, e'), at momentum transfer θ=300 MeV/c; calculated total longitudinal response density. 3H, 3He(e, e'), at momentum transfer θ=300, 500, 700 MeV/c; calculated longitudinal and transverse response functions, single proton momentum distribution of 3He. 3He(e, e), (e, e'), E=287.2, 319.1, 469.4, 499.9, 560.3, 667.3 MeV; 3H(e, e), (e, e'), E=367.7, 506.9, 557.9, 652.4, 790.2 MeV; calculated inclusive double-differential σ(E). Green's function Monte Carlo (GFMC) method with two approaches for the final hadronic state: the spectral-function (SF) formalism and the short-time approximation (STA). Comparison with experimental data.

doi: 10.1103/PhysRevC.105.014002
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2022CI08      J.Phys.(London) G49, 120502 (2022)

V.Cirigliano, Z.Davoudi, J.Engel, R.J.Furnstahl, G.Hagen, U.Heinz, H.Hergert, M.Horoi, C.W.Johnson, A.Lovato, E.Mereghetti, W.Nazarewicz, A.Nicholson, T.Papenbrock, S.Pastore, M.Plumlee, D.R.Phillips, P.E.Shanahan, S.R.Stroberg, F.Viens, A.Walker-Loud, K.A.Wendt, S.M.Wild

Towards precise and accurate calculations of neutrinoless double-beta decay

RADIOACTIVITY 48Ca(2β-); calculated neutrinoless nuclear matrix elements using chiral-EFT interactions, EDF, IBM, QRPA, SM-pf, SM-sdpf, SM-MBPT, RSM, QMC+SM, IM-GCM, VS-IMSRG, CCSD, CCSD-T1.

doi: 10.1088/1361-6471/aca03e
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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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2022SC13      Phys.Rev. C 106, 054323 (2022)

J.Schmitt, G.B.King, R.G.T.Zegers, Y.Ayyad, D.Bazin, B.A.Brown, A.Carls, J.Chen, A.Davis, M.DeNudt, J.Droste, B.Gao, C.Hultquist, H.Iwasaki, S.Noji, S.Pastore, J.Pereira, M.Piarulli, H.Sakai, A.Stolz, R.Titus, R.B.Wiringa, J.C.Zamora

Probing spin-isospin excitations in proton-rich nuclei via the 11C(p, n)11N reaction

NUCLEAR REACTIONS 1H(11C, n), E=95 MeV/nucleon; measured reaction products, time-of-flight, En, In, (particle)n-coin, angular distribution; deduced σ(θ), σ(θ, E), cumulative Gamow-Teller transition strengths, B(GT) values to the 1/2- state at 0.73 MeV and the 3/2- state at 2.86 MeV in 11N. Multipole decomposition analysis. Comparison to shell-model calculations with wbp interaction and to experimental data on the 11B(n, p), (d, 2He), (t, 3He) reactions. Ursinus liquid hydrogen target coupled to Low Energy Neutron Detector Array (LENDA) and S800 spectrograph. 11C beam produced from Be(16O, X) reaction and purified with A1900 fragment separator at Coupled Cyclotron Facility (CCF) at the NSCL.

doi: 10.1103/PhysRevC.106.054323
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Data from this article have been entered in the XUNDL database. For more information, click here.


2021RI06      Phys.Rev. C 103, 055501 (2021)

T.R.Richardson, M.R.Schindler, S.Pastore, R.P.Springer

Large-Nc analysis of two-nucleon neutrinoless double-β decay and charge-independence-breaking contact terms

doi: 10.1103/PhysRevC.103.055501
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2020CO16      Universe 6, 233 (2020)

L.Coraggio, N.Itaco, G.De Gregorio, A.Gargano, R.Mancino, S.Pastore

Present Status of Nuclear Shell-Model Calculations of 0νββ Decay Matrix Elements

doi: 10.3390/universe6120233
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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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2019CI06      Phys.Rev. C 100, 055504 (2019)

V.Cirigliano, W.Dekens, J.de Vries, M.L.Graesser, E.Mereghetti, S.Pastore, M.Piarulli, U.van Kolck, R.B.Wiringa

Renormalized approach to neutrinoless double-β decay

RADIOACTIVITY 6He, 12Be(2β-); calculated Fermi (F), Gamow-Teller (GT), and tensor (T) densities, variational Monte Carlo (VMC) for the dimensionless matrix elements of the long-range and short-range neutrino-exchange potentials and short-range transition densities for 0νββ decay modes; deduced that a short-range operator is only needed in spin-singlet s-wave transitions, while leading-order transitions involving higher partial waves depend solely on long-range currents.Ab initio calculations of the matrix elements for 0νββ decay using pionless and chiral effective field theory, extended to include next-to-leading-order corrections.

doi: 10.1103/PhysRevC.100.055504
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2019DI06      Phys.Rev. C 99, 034004 (2019)

N.N.Dinur, O.J.Hernandez, S.Bacca, N.Barnea, C.Ji, S.Pastore, M.Piarulli, R.B.Wiringa

Zemach moments and radii of 2, 3H and 3, 4He

NUCLEAR STRUCTURE 2,3H, 3,4He; calculated Zemach electromagnetic moments, charge radii, ground-state wave-functions using various few-body methods, such as Numerov algorithm or the harmonic oscillator expansion method for A=2 nuclei, and Monte Carlo (VMC) and Green's function Monte Carlo (GFMC) methods, with hyperspherical harmonics (HH) expansions and momentum-space formulation (HH-p), and the effective interaction scheme in coordinate space (EIHH). Comparison with experimental values. Benchmarking of electromagnetic moments relevant to ongoing experimental efforts of muon-nucleus systems, and to muonic atom data measured by the CREMA collaboration at the Paul Scherrer Institute.

doi: 10.1103/PhysRevC.99.034004
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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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2018PA05      Phys.Rev. C 97, 014606 (2018)

S.Pastore, J.Carlson, V.Cirigliano, W.Dekens, E.Mereghetti, R.B.Wiringa

Neutrinoless double-β decay matrix elements in light nuclei

RADIOACTIVITY 6,8,10He, 10,12Be, 48Ca, 76Ge, 136Xe(2β-); calculated dimensionless matrix elements for light Majorana-neutrino exchange in 0νββ decay using variational Monte Carlo (VMC) wave functions obtained from the Argonne ν18 two-nucleon potential and Illinois-7 three-nucleon interaction.

doi: 10.1103/PhysRevC.97.014606
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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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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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2014BA49      J.Phys.(London) G41, 123002 (2014)

S.Bacca, S.Pastore

Electromagnetic reactions on light nuclei

doi: 10.1088/0954-3899/41/12/123002
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2014PA37      Int.J.Mod.Phys. E23, 1430010 (2014)

S.Pastore, F.Myhrer, K.Kubodera

An update of muon capture on hydrogen

NUCLEAR REACTIONS 1,2H(μ-, X), E not given; analyzed available data; deduced parameters for capture rate. Chiral perturbation theory.

doi: 10.1142/S0218301314300100
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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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2013DA10      Phys.Rev.Lett. 111, 062502 (2013)

V.M.Datar, D.R.Chakrabarty, S.Kumar, V.Nanal, S.Pastore, R.B.Wiringa, S.P.Behera, A.Chatterjee, D.Jenkins, C.J.Lister, E.T.Mirgule, A.Mitra, R.G.Pillay, K.Ramachandran, O.J.Roberts, P.C.Rout, A.Shrivastava, P.Sugathan

Electromagnetic Transition from the 4+ to 2+ Resonance in 8Be Measured via the Radiative Capture in 4He+4He

NUCLEAR REACTIONS 4He(α, γ), E=19-29 MeV; measured reaction products, Eγ, Iγ; deduced σ; calculated energy levels, proton radii, quadrupole moments, B(E2). Green Function Monte Carlo method, comparison with available data.

doi: 10.1103/PhysRevLett.111.062502
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetD6232. Data from this article have been entered in the XUNDL database. For more information, click here.


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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2013PA40      Phys.Rev. C 88, 058501 (2013)

S.Pastore, F.Myhrer, K.Kubodera

Muon capture rate on hydrogen and the values of gA and gπNN

doi: 10.1103/PhysRevC.88.058501
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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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2013WI08      Phys.Rev. C 88, 044333 (2013)

R.B.Wiringa, S.Pastore, S.C.Pieper, G.A.Miller

Charge-symmetry breaking forces and isospin mixing in 8Be

NUCLEAR STRUCTURE 8Be; calculated levels, J, π, isospin-mixing (IM) matrix elements, isovector energy differences of mirror nuclei 8Be and 8Li; evaluated charge-symmetry breaking (CSB) components of the AV18 potential, contribution from one-photon, one-pion, one-ρ, and ρ-ω mixing. Green's function Monte Carlo (GFMC) calculations with realistic Argonne ν18 (AV18) two-nucleon and Illinois-7 three-nucleon potentials. Comparison with experimental data.

doi: 10.1103/PhysRevC.88.044333
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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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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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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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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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