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NSR database version of April 11, 2024.

Search: Author = F.Sammarruca

Found 57 matches.

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2023SA43      Phys.Rev. C 108, 044310 (2023)


Unitary limit and its far-reaching impact on neutron matter

doi: 10.1103/PhysRevC.108.044310
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2022SA28      Phys.Rev. C 105, 064303 (2022)


Neutron skin systematics from microscopic equations of state

NUCLEAR STRUCTURE 208Pb; calculated neutron skin thickness for a given set parameters of droplet model. 27Al, 48Ca, 58Ni, 59Co, 90Zr, 116,118,120,122,124Sn, 208Pb; analyzed available information on neutron skin thickness; deduced dependence of neutron skin thickness and surface width contribution on isospin asymmetry.

doi: 10.1103/PhysRevC.105.064303
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2021SA39      Phys.Rev. C 104, 034308 (2021)

F.Sammarruca, R.Millerson

Analysis of the neutron matter equation of state and the symmetry energy up to fourth order of chiral effective field theory

doi: 10.1103/PhysRevC.104.034308
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2021SA51      Phys.Rev. C 104, 064312 (2021)

F.Sammarruca, R.Millerson

Overview of symmetric nuclear matter properties from chiral interactions up to fourth order of the chiral expansion

doi: 10.1103/PhysRevC.104.064312
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2020MA13      Eur.Phys.J. A 56, 95 (2020)

R.Machleidt, F.Sammarruca

Can chiral EFT give us satisfaction?

doi: 10.1140/epja/s10050-020-00101-3
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2020SA34      Phys.Rev. C 102, 034313 (2020)

F.Sammarruca, R.Millerson

Exploring the relationship between nuclear matter and finite nuclei with chiral two- and three-nucleon forces

NUCLEAR STRUCTURE 16O, 40,48Ca, 208Pb; calculated energy per nucleon and charge radii, matter density distributions as function of the radial coordinate. Brueckner-Hartree-Fock (BHF) calculations of the nuclear matter equation of state (EoS) with chiral two- and three-nucleon interactions N2LO and N3LO. Comparison with experimental data.

doi: 10.1103/PhysRevC.102.034313
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2019MA22      Phys.Rev. C 99, 034003 (2019)

L.E.Marcucci, F.Sammarruca, M.Viviani, R.Machleidt

Momentum distributions and short-range correlations in the deuteron and 3He with modern chiral potentials

NUCLEAR STRUCTURE 2H, 3He; calculated single neutron and proton, neutron-proton, and proton-proton momentum distributions, short-range correlation probabilities using two-nucleon (2N) and 2N+3N chiral potentials (LO, NLO, N2LO, N3LO, N4LO) with and without leading chiral three-nucleon force; deduced model dependence of one- and two-body momentum distributions and the impact of three body forces. Comparison with previous theoretical predictions.

doi: 10.1103/PhysRevC.99.034003
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2017MU07      Int.J.Mod.Phys. E26, 1730001 (2017)

H.Muther, F.Sammarruca, Z.Ma

Relativistic effects and three-nucleon forces in nuclear matter and nuclei

NUCLEAR STRUCTURE 208Pb, 48Ca, 25O, 40Mg; calculated binding energy.

NUCLEAR REACTIONS 12C, 40Ca, 27Al, 56Fe, 98Mo, 208Pb(n, n), E<30 MeV; calculated θ(θ). Comparison with available data.

doi: 10.1142/S0218301317300016
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2017SA20      Phys.Rev. C 95, 044316 (2017)


Comparing symmetry energy predictions and recent constraints from the ASY-EOS experiment at GSI

NUCLEAR STRUCTURE 208Pb; calculated equation of state (EoS) of symmetric matter and neutron matter, and symmetry energy, neutron skin thickness and its relation to density derivatives of symmetry energy at and below saturation density. Estimate of theoretical uncertainties in microscopic predictions. Relevance to observables in the ASY-EOS experiment at GSI.

doi: 10.1103/PhysRevC.95.044316
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2016SA46      Phys.Rev. C 94, 044311 (2016)

F.Sammarruca, Y.Nosyk

Impact of the neutron matter equation of state on neutron skins and neutron drip lines in chiral effective field theory

NUCLEAR STRUCTURE 20,21,22,23,24,25,26,27,28,29,30,31O, 28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45Mg, 32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49Al; calculated binding energies and neutron skins for neutron-rich isotopes. Microscopic equations of state for neutron matter obtained at LO, NLO, N2LO and N3LO orders of chiral EFT, with phenomenological model for the EoS of symmetric nuclear matter. Comparison with available experimental values.

doi: 10.1103/PhysRevC.94.044311
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2016SA52      Phys.Rev. C 94, 054317 (2016)


Investigation of constraints on few-neutron forces in neutron matter by empirical information on the neutron skin of 48Ca and 208Pb

NUCLEAR STRUCTURE 48Ca, 208Pb; calculated density distributions for neutrons and protons, binding energy per nucleon, charge radius, proton and neutron point radii, neutron skin for different orders of chiral effective field theory (EFT) from NLO to N4LO. Microscopic equation of state (EOSs) of symmetric matter applying chiral two-nucleon forces (2NFs) up to fifth order.

doi: 10.1103/PhysRevC.94.054317
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2015SA22      Phys.Rev. C 91, 054311 (2015)

F.Sammarruca, L.Coraggio, J.W.Holt, N.Itaco, R.Machleidt, L.E.Marcucci

Toward order-by-order calculations of the nuclear and neutron matter equations of state in chiral effective field theory

doi: 10.1103/PhysRevC.91.054311
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2015SA42      Phys.Rev. C 92, 044003 (2015)


Short-range correlations in the deuteron: Chiral effective field theory, meson-exchange, and phenomenology

NUCLEAR REACTIONS 2H(e, e'), E at high momentum transfer; calculated high-momentum distributions and short-range correlation probabilities for deuteron using modern potentials based on chiral effective field theory; deduced short-range correlation probabilities from analyses of inclusive electron scattering data.

doi: 10.1103/PhysRevC.92.044003
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2015SA44      Phys.Rev. C 92, 054327 (2015)

F.Sammarruca, R.Machleidt, N.Kaiser

Spin-polarized neutron-rich matter at different orders of chiral effective field theory

doi: 10.1103/PhysRevC.92.054327
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2014CO09      Phys.Rev. C 89, 044321 (2014)

L.Coraggio, J.W.Holt, N.Itaco, R.Machleidt, L.E.Marcucci, F.Sammarruca

Nuclear-matter equation of state with consistent two- and three-body perturbative chiral interactions

NUCLEAR STRUCTURE 3H, 3He; calculated neutron-proton phase shifts, binding energy, Gamow-Teller transition matrix element, nuclear matter energy per particle. Equation of state (EOS) for two- and three-body perturbative chiral interactions in the framework of the perturbative Goldstone expansion and regulator functions. Comparison with experimental data.

doi: 10.1103/PhysRevC.89.044321
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2014SA14      Eur.Phys.J. A 50, 22 (2014)


Microscopic approach to the nucleon-nucleon effective interaction and nucleon-nucleon scattering in symmetric and isospin-asymmetric nuclear matter

NUCLEAR REACTIONS 1n, 1H(p, p), (p, X), E at 0-600 MeV/c; calculated σ in symmetric and isospin-asymmetric nuclear matter at various densities, nucleon mean-free path using using microscopic approach.

doi: 10.1140/epja/i2014-14022-1
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2014SA69      Phys.Rev. C 90, 064312 (2014)


Short-range correlations in isospin symmetric and asymmetric nuclear matter: A microscopic perspective

doi: 10.1103/PhysRevC.90.064312
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2014WH03      Phys.Rev. C 90, 044607 (2014)

L.White, F.Sammarruca

In-medium nucleon-nucleon cross sections with nonspherical Pauli blocking

NUCLEAR REACTIONS 1H(p, p), (n, n), E=50, 100, 200 MeV; calculated in-medium np and pp differential σ(θ) using solution to Bethe-Goldstone scattering equation.

doi: 10.1103/PhysRevC.90.044607
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2013CH22      Phys.Rev. C 87, 054616 (2013)

B.Chen, F.Sammarruca, C.A.Bertulani

Microscopic in-medium nucleon-nucleon cross sections with improved Pauli blocking effects

doi: 10.1103/PhysRevC.87.054616
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2013CO02      Phys.Rev. C 87, 014322 (2013)

L.Coraggio, J.W.Holt, N.Itaco, R.Machleidt, F.Sammarruca

Reduced regulator dependence of neutron-matter predictions with perturbative chiral interactions

doi: 10.1103/PhysRevC.87.014322
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2013WH02      Phys.Rev. C 88, 054619 (2013)

L.White, F.Sammarruca

Solution of the Bethe-Goldstone equation without partial-wave decomposition

doi: 10.1103/PhysRevC.88.054619
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2012SA51      Phys.Rev. C 86, 054317 (2012)

F.Sammarruca, B.Chen, L.Coraggio, N.Itaco, R.Machleidt

Dirac-Brueckner-Hartree-Fock versus chiral effective field theory

doi: 10.1103/PhysRevC.86.054317
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2012SA58      Eur.Phys.J. A 48, 181 (2012)

F.Sammarruca, L.White, B.Chen

The impact of charge symmetry and charge independence breaking on the properties of neutrons and protons in isospin-asymmetric nuclear matter

doi: 10.1140/epja/i2012-12181-7
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2012TS04      Phys.Rev. C 86, 015803 (2012)

M.B.Tsang, J.R.Stone, F.Camera, P.Danielewicz, S.Gandolfi, K.Hebeler, C.J.Horowitz, J.Lee, W.G.Lynch, Z.Kohley, R.Lemmon, P.Moller, T.Murakami, S.Riordan, X.Roca-Maza, F.Sammarruca, A.W.Steiner, I.Vidana, S.J.Yennello

Constraints on the symmetry energy and neutron skins from experiments and theory

NUCLEAR STRUCTURE 208Pb; analyzed neutron-skin thickness, symmetry energy constraints. Contributions of three-body forces in neutron matter models.

doi: 10.1103/PhysRevC.86.015803
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2011SA26      Phys.Rev. C 83, 064304 (2011)


Spin- and isospin-polarized states of nuclear matter in the Dirac-Brueckner-Hartree-Fock model

doi: 10.1103/PhysRevC.83.064304
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2011SA27      Phys.Rev. C 83, 064602 (2011)

F.Sammarruca, L.White

Probing the sensitivity of the total nucleus-nucleus reaction cross section at intermediate energies to medium effects and isospin asymmetries

NUCLEAR STRUCTURE 208Pb, 40Ca; calculated rms charge radii, neutron and proton densities.

NUCLEAR REACTIONS 208Pb(40Ca, X), E=50-300 MeV/nucleon; 28Si(46Ca, X), (47Ca, X), (48Ca, X), (49Ca, X), (50Ca, X), (42Ar, X), (43Ar, X), (44Ar, X), (45Ar, X), (46Ar, X), E=50-70 MeV/nucleon; calculated total reaction cross sections, NN interactions using microscopic equation of state (EOS). Comparison with experimental data.

doi: 10.1103/PhysRevC.83.064602
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2011SA44      Phys.Rev. C 84, 044307 (2011)


Contribution of isovector mesons to the symmetry energy in a microscopic model

doi: 10.1103/PhysRevC.84.044307
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2010SA22      Phys.Rev. C 82, 027307 (2010)


Splitting of the one-body potential in spin-polarized isospin-symmetric nuclear matter

doi: 10.1103/PhysRevC.82.027307
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2009SA14      Phys.Rev. C 79, 034301 (2009)


Effect of Λ hyperons on the nuclear equation of state in a Dirac-Brueckner-Hartree-Fock model

doi: 10.1103/PhysRevC.79.034301
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2009SA21      Phys.Rev. C 79, 057301 (2009)

F.Sammarruca, P.Liu

Neutron skin of 208Pb and density dependence of the symmetry energy

NUCLEAR STRUCTURE 208Pb; calculated neutron and proton densities and neutron skin thickness using Dirac-Brueckner Hartree-Fock approach with 3-body forces.

doi: 10.1103/PhysRevC.79.057301
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2008SA16      Phys.Rev. C 77, 047301 (2008)


Mean free path of protons and neutrons in isospin-asymmetric nuclear matter

doi: 10.1103/PhysRevC.77.047301
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2007SA15      Phys.Rev. C 75, 034315 (2007)

F.Sammarruca, P.G.Krastev

Spin polarized neutron matter within the Dirac-Brueckner-Hartree-Fock approach

doi: 10.1103/PhysRevC.75.034315
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2007SO06      Phys.Rev. C 75, 034611 (2007)

D.S.Sorenson, J.L.Ullmann, A.Ling, B.K.Park, R.C.Haight, N.S.P.King, R.A.Lindgren, H.Baghaei, E.J.Stephenson, F.P.Brady, J.L.Romero, J.Rapaport, B.L.Clausen, C.Wuest, F.Sammarruca

Limitations of the distorted-wave impulse approximation in describing the energy dependence of the 10B(n, p)10Be(g.s.) reaction

NUCLEAR REACTIONS 10B(n, p), E=70240 MeV; measured σ(E, θ). Comparison with zero- and finite-range DWIA predictions.

doi: 10.1103/PhysRevC.75.034611
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Data from this article have been entered in the EXFOR database. For more information, access X4 dataset14139.

2007ZH44      Phys.Rev. C 76, 054001 (2007)

H.F.Zhang, Z.H.Li, U.Lombardo, P.Y.Luo, F.Sammarruca, W.Zuo

Nucleon-nucleon cross sections in dense nuclear matter

doi: 10.1103/PhysRevC.76.054001
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2006KR05      Phys.Rev. C 74, 025808 (2006); Erratum Phys.Rev. C 74, 039901 (2006)

P.G.Krastev, F.Sammarruca

Neutron star properties and the equation of state of neutron-rich matter

doi: 10.1103/PhysRevC.74.025808
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2006SA02      Phys.Rev. C 73, 014001 (2006)

F.Sammarruca, P.Krastev

Effective nucleon-nucleon cross sections in symmetric and asymmetric nuclear matter

doi: 10.1103/PhysRevC.73.014001
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2005SA36      Phys.Rev. C 71, 064306 (2005)

F.Sammarruca, W.Barredo, P.Krastev

Predicting the single-proton and single-neutron potentials in asymmetric nuclear matter

doi: 10.1103/PhysRevC.71.064306
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2005ST01      Phys.Rev. C 71, 014612 (2005)

E.J.Stephenson, R.C.Johnson, F.Sammarruca

Inclusion of nonspherical components of the Pauli blocking operator in (p, p') reactions

NUCLEAR REACTIONS 40Ca(p, p'), E=100, 200 MeV; calculated σ(θ), analyzing powers. Nonspherical Pauli blocking operator.

doi: 10.1103/PhysRevC.71.014612
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2003AL13      Phys.Rev. C 67, 054301 (2003)

D.Alonso, F.Sammarruca

Microscopic calculations in asymmetric nuclear matter

doi: 10.1103/PhysRevC.67.054301
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2003AL34      Phys.Rev. C 68, 054305 (2003)

D.Alonso, F.Sammarruca

Neutron densities and the equation of state for neutron-rich matter

NUCLEAR STRUCTURE 40Ca, 90Zr, 208,266Pb; calculated binding energies, matter density distributions, radii, neutron skin thickness. Microscopic model of equation of state for asymmetric nuclear matter. Comparisons with data.

doi: 10.1103/PhysRevC.68.054305
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2002SA18      Phys.Rev. C65, 047601 (2002)

F.Sammarruca, D.Alonso, E.J.Stephenson

Comparison between Chiral and Meson-Theoretic Nucleon-Nucleon Potentials Through (p, p') Reactions

NUCLEAR REACTIONS 16O, 40Ca(p, p'), E=200 MeV; calculated σ(θ), polarization observables. Comparison of chiral and one-boson-exchange potentials.

doi: 10.1103/PhysRevC.65.047601
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2002WA23      Phys.Rev. C66, 014606 (2002)

X.Wang, J.Rapaport, M.Palarczyk, C.Hautala, X.Yang, D.L.Prout, B.Anderson, A.R.Baldwin, J.Olmsted, J.W.Watson, W.-M.Zhang, I.Van Heerden, E.J.Stephenson, R.Howes, S.Parks, E.Sugarbaker, B.A.Brown, F.Sammarruca

Polarization Transfer Measurements for the 13C(p(pol), n(pol))13N Reaction at 197 MeV and Empirical Isovector Spin-Longitudinal Response for the (1/2)g.s.- → (1/2)1+ Transition

NUCLEAR REACTIONS 13C(polarized p, n), E=197 MeV; measured excitation energy spectra, σ(E, θ), polarization transfer coefficients. 13N deduced transitions spin-transverse and spin-longitudinal components. Comparison with model predictions.

doi: 10.1103/PhysRevC.66.014606
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC0880.

2001SA48      Phys.Rev. C64, 034006 (2001)

F.Sammarruca, E.J.Stephenson

Δ Isobars and (p, p') Reactions

NUCLEAR REACTIONS 16O, 28Si, 40Ca(p, p'), E=200 MeV; calculated σ(E, θ), polarization observables, role of Δ-isobar coupling. Comparisons with data.

doi: 10.1103/PhysRevC.64.034006
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2000SA02      Phys.Rev. C61, 014309 (2000)

F.Sammarruca, E.J.Stephenson, K.Jiang, J.Liu, C.Olmer, A.K.Opper, S.W.Wissink

Testing Microscopic Medium Effects on Nucleons and Mesons using Polarization Observables in High-Spin, Unnatural-Parity (p(pol), p(pol)') Reactions at 200 MeV

NUCLEAR REACTIONS 16O, 28Si(polarized p, p'), E=200 MeV; calculated σ(E, θ), polarization observables; deduced medium effects. DWIA approach, comparisons with data.

doi: 10.1103/PhysRevC.61.014309
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2000SA30      Phys.Rev. C62, 014614 (2000)

F.Sammarruca, X.Meng, E.J.Stephenson

Exact Treatment of the Pauli Exclusion Operator in Nuclear Matter

doi: 10.1103/PhysRevC.62.014614
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2000SA42      Acta Phys.Pol. B31, 2039 (2000)

F.Sammarruca, H.Witala, X.Meng

Modifications of Meson Masses and the Three-Nucleon Problem

NUCLEAR REACTIONS 2H(polarized n, n), E=3-65 MeV; analyzed vector, tensor analyzing powers; deduced role of meson mass scaling. Brown-Rho hypothesis.

NUCLEAR STRUCTURE 3H; analyzed binding energy; deduced role of meson mass scaling. Brown-Rho hypothesis.

1999SA57      Phys.Rev. C60, 064610 (1999)

F.Sammarruca, E.J.Stephenson, K.Jiang

Microscopic Calculations of Medium Effects for 200-MeV (p(pol), p(pol)') Reactions

NUCLEAR REACTIONS 16O, 40Ca(p, p'), E=200 MeV; 28Si(p, p'), E=180 MeV; calculated σ(E, θ), analyzing powers; deduced medium effects. G-matrix calculation, comparisons with data, other models.

doi: 10.1103/PhysRevC.60.064610
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1998DE01      Phys.Rev. C57, 196 (1998)

P.A.Deutchman, F.Sammarruca

Effects of ρ Exchange in Coherent Pion Production

NUCLEAR REACTIONS 12C(12C, 12CX), E=100, 250, 400 MeV/nucleon; calculated neutral pion production σ(E(π), θ(π)); deduced ρ-exchange transition role.

doi: 10.1103/PhysRevC.57.196
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1998SA23      Phys.Rev. C58, 307 (1998)

F.Sammarruca, E.J.Stephenson

Framework for using (p(pol), p(pol)') Reactions to Characterize New Medium Modifications to the Nucleon-Nucleon Interaction

NUCLEAR REACTIONS 28Si(polarized p, p'), E=200 MeV; calculated σ(θ), analyzing power, polarization transfer coefficients; deduced baseline for NN potentials in-medium modifications. DWIA analysis.

doi: 10.1103/PhysRevC.58.307
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1998SA37      Few-Body Systems 24, 87 (1998)

F.Sammarruca, R.Machleidt

Triton Binding Energy and Minimal Relativity

NUCLEAR STRUCTURE 3H; calculated binding energy correction; deduced invariant two-body amplitude contribution, relativistic effects.

doi: 10.1007/s006010050078
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1997SA39      Can.J.Phys. 75, 493 (1997)


On the Role of the 3F3 Partial Wave in Elastic and Inelastic Nucleon-Nucleon Scattering at 800 MeV

NUCLEAR REACTIONS 1H(p, p), (p, X), E=810 MeV; analyzed data; deduced 3F3 partial wave role.

doi: 10.1139/cjp-75-7-493
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1996MA09      Phys.Rev. C53, R1483 (1996)

R.Machleidt, F.Sammarruca, Y.Song

Nonlocal Nature of the Nuclear Force and Its Impact on Nuclear Structure

NUCLEAR STRUCTURE 3H; calculated binding energy; deduced nonlocal potential off-shell behavior role. Relativistic meson field theory based nonlocality.

doi: 10.1103/PhysRevC.53.R1483
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1995SA24      Phys.Rev. C51, 2823 (1995)


Polarization in the pp → nΔ++ Reaction Above 1 GeV

NUCLEAR REACTIONS 1H(p, X), E=1-1.2 GeV; calculated beam asymmetry in Δ++ production; deduced energy dependence mechanism.

doi: 10.1103/PhysRevC.51.2823
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1994SA27      Phys.Rev. C50, 652 (1994)


Reaction pp → nΔ++: Observables and model predictions

NUCLEAR REACTIONS 1H(p, X), E=0.57-1.28 GeV; calculated σ(θ) for Δ production; deduced 3F3(NN) → 3P3(NΔ) transition amplitude phases role.

doi: 10.1103/PhysRevC.50.652
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1992SA17      Phys.Rev. C46, 1636 (1992)

F.Sammarruca, D.P.Xu, R.Machleidt

Relativistic Corrections to the Triton Binding Energy

NUCLEAR STRUCTURE 3H; calculated binding energy. Bethe-Salpeter equation, relativistic three dimensional version, Faddeev calculation.

doi: 10.1103/PhysRevC.46.1636
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1991MA12      Phys.Rev.Lett. 66, 564 (1991)

R.Machleidt, F.Sammarruca

Recent Determinations of the πNN Coupling Constants and Deuteron Properties

NUCLEAR STRUCTURE 2H; calculated quadrupole moment, D-state probability, asymptotic (D/S)-state ratio. New value of πNN coupling constant.

doi: 10.1103/PhysRevLett.66.564
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1990SA15      Phys.Rev. C41, 2286 (1990)

F.Sammarruca, T.Mizutani

Single Pion Production in Nucleon-Nucleon Collisions

NUCLEAR REACTIONS 1H(p, pπ+), E=800 MeV; calculated σ(θp, θ(π)) vs proton momentum.

doi: 10.1103/PhysRevC.41.2286
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