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NSR database version of April 24, 2024.

Search: Author = S.Simula

Found 44 matches.

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2021FR10      Eur.Phys.J. A 57, 282 (2021)

R.Frezzotti, G.Gagliardi, V.Lubicz, F.Sanfilippo, S.Simula

Rotated twisted-mass: a convenient regularization scheme for isospin breaking QCD and QED lattice calculations

doi: 10.1140/epja/s10050-021-00579-5
Citations: PlumX Metrics


2007SI10      Eur.Phys.J. A 31, 603 (2007)

S.Simula

Leading and higher twists in proton, neutron and deuteron unpolarized structure functions F2

doi: 10.1140/epja/i2006-10246-x
Citations: PlumX Metrics


2006OS01      Nucl.Phys. A766, 142 (2006)

M.Osipenko, W.Melnitchouk, S.Simula, S.Kulagin, G.Ricco

Leading twist moments of the neutron structure function Fn2

NUCLEAR STRUCTURE 1,2H; analyzed spin-dependent structure function data; deduced matrix elements.

doi: 10.1016/j.nuclphysa.2005.11.018
Citations: PlumX Metrics


2005BE15      Eur.Phys.J. A 24, Supplement 1, 69 (2005)

D.Becirevic, D.Guadagnoli, G.Isidori, V.Lubicz, G.Martinelli, F.Mescia, M.Papinutto, S.Simula, C.Tarantino, G.Villadoro

SU(3)-breaking effects in kaon and hyperon semileptonic decays from lattice QCD

doi: 10.1140/epjad/s2005-05-012-0
Citations: PlumX Metrics


2005GU21      Nucl.Phys. A755, 485c (2005)

D.Guadagnoli, M.Papinutto, S.Simula

Extracting excited states from lattice QCD: the Roper resonance

doi: 10.1016/j.nuclphysa.2005.03.059
Citations: PlumX Metrics


2005OS01      Phys.Lett. B 609, 259 (2005)

M.Osipenko, W.Melnitchouk, S.Simula, P.Bosted, V.Burkert, M.E.Christy, K.Griffioen, C.Keppel, S.E.Kuhn

Higher twist analysis of the proton g1 structure function

NUCLEAR STRUCTURE 1H; analyzed spin-dependent structure function data; deduced matrix elements, polarizabilities.

doi: 10.1016/j.physletb.2005.01.071
Citations: PlumX Metrics


2004FA28      Phys.Rev. D 70, 074017 (2004)

P.Faccioli, D.Guadagnoli, S.Simula

Neutron electric dipole moment in the instanton vacuum: Quenched versus unquenched simulations

NUCLEAR STRUCTURE 1n; calculated electric dipole moment, role of fermionic determinant. Instanton liquid drop model.

doi: 10.1103/PhysRevD.70.074017
Citations: PlumX Metrics


2003PE11      Phys.Rev. D 67, 094004 (2003); Erratum Phys.Rev. D 68, 099901 (2003)

R.Petronzio, S.Simula, G.Ricco

Possible evidence of extended objects inside the proton

NUCLEAR STRUCTURE 1H; analyzed structure function data; deduced constituent size, related features.

doi: 10.1103/PhysRevD.67.094004
Citations: PlumX Metrics


2003SI24      Phys.Lett. B 574, 189 (2003)

S.Simula

Longitudinal structure function of the proton at low momentum transfer and extended constituents

NUCLEAR STRUCTURE 1H; calculated inelastic Nachtmann moments of unpolarized structure function.

doi: 10.1016/j.physletb.2003.09.032
Citations: PlumX Metrics


2002SA37      Phys.Rev. C66, 024001 (2002)

M.M.Sargsian, S.Simula, M.I.Strikman

Neutron structure function and inclusive deep inelastic scattering from 3H and 3He at large Bjorken x

NUCLEAR REACTIONS 3H, 3,4He, 56Fe(e, e'X), E=high; calculated σ(E, θ), structure functions, nuclear effects; deduced uncertainties. Comparisons with data.

doi: 10.1103/PhysRevC.66.024001
Citations: PlumX Metrics


2002SI01      Phys.Rev. D65, 034017 (2002)

S.Simula, M.Osipenko, G.Ricco, M.Taiuti

Leading and Higher Twists in the Proton Polarized Structure Function g1p at Large Bjorken x

NUCLEAR STRUCTURE 1H; analyzed data; deduced polarized structure function.

doi: 10.1103/PhysRevD.65.034017
Citations: PlumX Metrics


2002SI24      Phys.Rev. C66, 035201 (2002)

S.Simula

Comparison Among Hamiltonian Light-Front Formalisms at q+ = 0 and q+ ≠ 0: Spacelike elastic form factors of pseudoscalar and vector mesons

doi: 10.1103/PhysRevC.66.035201
Citations: PlumX Metrics


2000CA16      Nucl.Phys. A663-664, 931c (2000)

F.Cardarelli, S.Simula

Analysis of the Exclusive Semileptonic Decay Λb → Λe + l(ν-bar)l within a Light-Front Constituent Quark Model

doi: 10.1016/S0375-9474(99)00800-3
Citations: PlumX Metrics


2000CA51      Phys.Rev. C62, 065201 (2000)

F.Cardarelli, S.Simula

SU(6) Breaking Effects in the Nucleon Elastic Electromagnetic Form Factors

NUCLEAR STRUCTURE 1n, 1H; calculated nucleon elastic electromagnetic form factors, SU(6) symmetry breaking effects.

doi: 10.1103/PhysRevC.62.065201
Citations: PlumX Metrics


2000PA19      Nucl.Phys. A666-667, 33c (2000)

E.Pace, G.Salme, F.Cardarelli, S.Simula

A Light-Front Description of Electromagnetic Form Factors for J ≤ 3/2 Hadrons

doi: 10.1016/S0375-9474(00)00007-5
Citations: PlumX Metrics


2000RI01      Nucl.Phys. A666-667, 165c (2000)

G.Ricco, S.Simula

Power Corrections to the Structure Functions of Proton and Deuteron

doi: 10.1016/S0375-9474(00)00023-3
Citations: PlumX Metrics


2000RI07      Nucl.Phys. A663-664, 1015c (2000)

G.Ricco, S.Simula

Power Corrections to the Structure Functions of Proton and Deuteron

NUCLEAR STRUCTURE 1,2H; analyzed data; deduced contributions of multiparton correlations to structure functions.

doi: 10.1016/S0375-9474(99)00758-7
Citations: PlumX Metrics


2000SI17      Phys.Lett. 481B, 14 (2000)

S.Simula

Target-Mass Corrections and the Bloom-Gilman Duality of the Nucleon Structure Function

NUCLEAR STRUCTURE 1H; calculated structure functions, form factors, target-mass corrections.

doi: 10.1016/S0370-2693(00)00425-1
Citations: PlumX Metrics


2000SI37      Phys.Lett. 493B, 325 (2000)

S.Simula

Soft Gluon Effects in the Extraction of Higher Twists at Large Bjorken x

NUCLEAR STRUCTURE 1H; analyzed structure functions; deduced higher twist contributions, soft gluon effects.

doi: 10.1016/S0370-2693(00)01147-3
Citations: PlumX Metrics


1999CA47      Phys.Lett. 467B, 1 (1999)

F.Cardarelli, S.Simula

Relativistic Effects on the Neutron Charge Form Factor in the Constituent Quark Model

NUCLEAR STRUCTURE 1n; calculated charge form factor, relativistic corrections. Constituent quark model.

doi: 10.1016/S0370-2693(99)01146-6
Citations: PlumX Metrics


1999RI15      Nucl.Phys. B555, 306 (1999)

G.Ricco, S.Simula, M.Battaglieri

Power Corrections in the Longitudinal and Transverse Structure Functions of Proton and Deuteron

NUCLEAR STRUCTURE 1,2H; analyzed data; deduced corrections to longitudinal, transverse structure functions.

doi: 10.1016/S0550-3213(99)00302-8
Citations: PlumX Metrics


1998CA10      Phys.Lett. 418B, 237 (1998)

F.Cardarelli, B.Pasquini, S.Simula

The Nucleon Drell-Hearn-Gerasimov Sum Rule within a Relativistic Constituent Quark Model

doi: 10.1016/S0370-2693(97)01472-X
Citations: PlumX Metrics


1998RI01      Phys.Rev. C57, 356 (1998)

G.Ricco, M.Anghinolfi, M.Ripani, S.Simula, M.Taiuti

Bloom-Gilman Duality of Inelastic Structure Functions in Nucleon and Nuclei

NUCLEAR REACTIONS 1,2H, 9Be, 12C, 16O(e, e'), E not given; analyzed data; deduced onset of Bloom-Gilman local duality.

doi: 10.1103/PhysRevC.57.356
Citations: PlumX Metrics


1998SI05      Nucl.Phys. A631, 602c (1998)

S.Simula

Spectator Scaling in Semi-Inclusive Inelastic Lepton Scattering Off the Deuteron and the Neutron Structure Function

NUCLEAR REACTIONS 2H(e, e'p), (e, e'n), E not given; calculated response functions; deduced spectator mechanism scaling properties.

doi: 10.1016/S0375-9474(98)00075-X
Citations: PlumX Metrics


1997CA21      Phys.Lett. 397B, 13 (1997)

F.Cardarelli, E.Pace, G.Salme, S.Simula

Electroproduction of the Roper Resonance and the Constituent Quark Model

NUCLEAR STRUCTURE 1n, 1H; calculated constituent quarks momentum distribution.

doi: 10.1016/S0370-2693(97)00149-4
Citations: PlumX Metrics


1997CA43      Nucl.Phys. A623, 361c (1997)

F.Cardarelli, E.Pace, G.Salme, S.Simula

Light-Front CQM Calculations of Baryon Electromagnetic Form Factors

doi: 10.1016/S0375-9474(97)00456-9
Citations: PlumX Metrics


1996AN13      Nucl.Phys. A602, 405 (1996)

M.Anghinolfi, M.Battaglieri, N.Bianchi, R.Cenni, P.Corvisiero, A.Fantoni, P.Levi Sandri, A.Longhi, V.Lucherini, V.I.Mokeev, V.Muccifora, E.Polli, A.Reolon, G.Ricco, M.Ripani, P.Rossi, S.Simula, M.Taiuti, A.Teglia, A.Zucchiatti

Quasi-Elastic and Inelastic Inclusive Electron Scattering from an Oxygen Jet Target

NUCLEAR REACTIONS 12C, 16O(e, e'X), E=0.5-1.5 GeV; measured inclusive σ vs energy transfer; deduced nucleon-nucleon correlations role. Data on other targets analyzed.

doi: 10.1016/0375-9474(96)00093-0
Citations: PlumX Metrics


1996CA13      Phys.Lett. 371B, 7 (1996)

F.Cardarelli, E.Pace, G.Salme, S.Simula

Electromagnetic N - Δ Transition Form Factors in a Light-Front Constituent Quark Model

doi: 10.1016/0370-2693(95)01612-0
Citations: PlumX Metrics


1996CI01      Phys.Rev. C53, 1689 (1996)

C.Ciofi degli Atti, S.Simula

Realistic Model of the Nucleon Spectral Function in Few- and Many-Nucleon Systems

NUCLEAR REACTIONS 3,4He(e, e'pX), E=not given; calculated σ(θ(e'), E(e'), θp) vs missing energy. 2H, 4He, 54Fe(e, e'X), E not given; calculated nuclear scaling function. Realistic nucleon spectral function model.

doi: 10.1103/PhysRevC.53.1689
Citations: PlumX Metrics


1996SI18      Phys.Lett. 387B, 245 (1996)

S.Simula

Semi-Inclusive Deep Inelastic Electron Scattering Off the Deuteron and the Neutron to Proton Structure Function Ratio

NUCLEAR REACTIONS 2H(e, e'X), E not given; calculated semi-inclusive σ. 1n, 1H deduced structure function ratio.

doi: 10.1016/0370-2693(96)01044-1
Citations: PlumX Metrics


1995AN09      J.Phys.(London) G21, L9 (1995)

M.Anghinolfi, M.Ripani, R.Cenni, P.Corvisiero, A.Longhi, L.Mazzaschi, V.Mokeev, G.Ricco, M.Taiuti, A.Teglia, A.Zucchiatti, N.Bianchi, A.Fantoni, V.Muccifora, P.Levi Sandri, V.Lucherini, E.Polli, A.R.Reolon, P.Rossi, S.Simula

Inclusive Electron Scattering from an Oxygen and Argon Jet Target

NUCLEAR REACTIONS 16O, 40Ar(e, e'X), E=0.5-1.5 GeV; measured σ(θ) vs energy transfer; deduced Coulomb sum rule in quasielastic peak region. Clustered jet target, BGO calorimeter.

doi: 10.1088/0954-3899/21/3/001
Citations: PlumX Metrics


1995CA13      Phys.Lett. 349B, 393 (1995)

F.Cardarelli, I.L.Grach, I.M.Narodetsky, G.Salme, S.Simula

Electromagnetic Form Factors for the ρ Meson in a Light-Front Constituent Quark Model

doi: 10.1016/0370-2693(95)00230-I
Citations: PlumX Metrics


1995CA34      Phys.Lett. 357B, 267 (1995)

F.Cardarelli, E.Pace, G.Salme, S.Simula

Nucleon and Pion Electromagnetic Form Factors in a Light-Front Constituent Quark Model

NUCLEAR STRUCTURE 1H; calculated electromagnetic form factors. Light-front constituent quark model.

doi: 10.1016/0370-2693(95)00921-7
Citations: PlumX Metrics


1995CA35      Phys.Lett. 359B, 1 (1995)

F.Cardarelli, I.L.Grach, I.M.Narodetsky, G.Salme, S.Simula

Radiative πρ and πω Transition Form Factors in a Light-Front Constituent Quark Model

doi: 10.1016/0370-2693(95)01058-X
Citations: PlumX Metrics


1995KE03      Phys.Lett. 344B, 79 (1995)

L.J.H.M.Kester, W.H.A.Hesselink, N.Kalantar-Nayestanaki, J.H.Mitchell, A.Pellegrino, E.Jans, J.Konijn, J.J.M.Steijger, J.L.Visschers, A.Zondervan, J.R.Calarco, D.DeAngelis, F.W.Hersman, W.Kim, Th.S.Bauer, M.W.Kelder, Z.Papandreou, J.Ryckebusch, C.Ciofi degli Atti, S.Simula

Two-Nucleon Knock-Out Investigated with the Semi-Exclusive 12C(e, e'p) Reaction

NUCLEAR REACTIONS 12C(e, e'p), E=475 MeV; measured σ(E(e'), θ(e'), θp) vs missing energy; deduced virtual photon coupling to pion exchange currents, Δ-excitation roles.

doi: 10.1016/0370-2693(94)01583-X
Citations: PlumX Metrics


1994CA34      Phys.Lett. 332B, 1 (1994)

F.Cardarelli, I.L.Grach, I.M.Narodetsky, E.Pace, G.Salme, S.Simula

Hard Constituent Quarks and Electroweak Properties of Pseudoscalar Mesons

doi: 10.1016/0370-2693(94)90849-4
Citations: PlumX Metrics


1994CI03      Phys.Lett. 325B, 276 (1994)

C.Ciofi degli Atti, S.Simula

Nucleon-Nucleon Correlations and Final State Interaction in Inclusive Quasi-Elastic Electron Scattering Off Nuclei at x > 1

NUCLEAR REACTIONS 2H, 4He, 56Fe(e, e'X), E not given; calculated inclusive σ, scaling function; deduced pair virtual photon absorption, pair rescattering into continuum role.

doi: 10.1016/0370-2693(94)90010-8
Citations: PlumX Metrics


1993CI05      Phys.Lett. 319B, 23 (1993)

C.Ciofi degli Atti, S.Simula

Slow Proton Production in Semi-Inclusive Deep Inelastic Lepton Scattering Off Nuclei

NUCLEAR REACTIONS 12C(e, e'p), E not given; calculated σ(E(e'), θ(e'), θp) vs proton kinetic energy. Semi-inclusive deep inelastic scattering.

doi: 10.1016/0370-2693(93)90775-D
Citations: PlumX Metrics


1991CI06      Phys.Rev. C44, R7 (1991)

C.Ciofi degli Atti, S.Simula, L.L.Frankfurt, M.I.Strikman

Two-Nucleon Correlations and the Structure of the Nucleon Spectral Function at High Values of Momentum and Removal Energy

NUCLEAR STRUCTURE 3He; calculated spectral function vs removal energy, width. Two-nucleon correlations.

doi: 10.1103/PhysRevC.44.R7
Citations: PlumX Metrics


1991MA63      Nucl.Phys. A532, 301c (1991)

C.Marchand, G.Salme, S.Simula

Quasi-Elastic Electron Scattering and Nucleon-Nucleon Correlations

NUCLEAR STRUCTURE 56Fe; calculated nucleon momentum distribution, asymptotic scaling function. 4He; calculated asymptotic scaling function.

doi: 10.1016/0375-9474(91)90705-B
Citations: PlumX Metrics


1990CI04      Phys.Rev. C41, R2474 (1990)

C.Ciofi degli Atti, S.Liuti, S.Simula

Nucleon Spectral Function in Complex Nuclei and Nuclear Matter and Inclusive Quasielastic Electron Scattering

NUCLEAR STRUCTURE 4He, 12C, 56Fe; analyzed quasielastic electron scattering data; deduced y-scaling.

doi: 10.1103/PhysRevC.41.R2474
Citations: PlumX Metrics


1986CI05      Czech.J.Phys. B36, 966 (1986)

C.Ciofi degli Atti, S.Simula

Calculations for Few-Body Systems with Correlated Basis Functions

NUCLEAR STRUCTURE 3H, 3He; calculated point proton density. Correlated variational harmonic oscillator.


1985CI04      Phys.Rev. C32, 1090 (1985)

C.Ciofi degli Atti, S.Simula

Variational Calculations with Correlated Basis Functions: Three-nucleon and three-alpha-particle systems

NUCLEAR STRUCTURE 3H; calculated ground state energy, mean kinetic energy, S-wave probability, point proton radius, density, momentum distribution, charge form factor. Three-body variational calculation, correlated basis function. 12C; calculated ground state energy, mean kinetic energy, mass radius, charge form factor. Three-α system, variational method correlated basis function.

doi: 10.1103/PhysRevC.32.1090
Citations: PlumX Metrics


1984CI09      Lett.Nuovo Cim. 41, 101 (1984)

C.Ciofi Degli Atti, S.Simula

A New Variational Wave Function for Interacting Few-Body Systems

NUCLEAR STRUCTURE 3He; calculated point proton density. Three-nucleon interaction, variational function.


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