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Search: Author = I.R.Afnan

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2015AF06      Phys.Rev. C 92, 054608 (2015)

I.R.Afnan, B.F.Gibson

Resonances in the Λnn system

NUCLEAR STRUCTURE 3n; analyzed existence of a resonance in Λnn hypertriton system using a rank-one separable potential formulation of the Hamiltonian, eigenvalues from Faddeev equations in a complex energy plane, and Yamaguchi separable potentials for Λp system. Discussed possibility of measuring Λn interaction and Λnn resonance through 3H(e, e'K) experiment at JLAB.

doi: 10.1103/PhysRevC.92.054608
Citations: PlumX Metrics


2014GI06      Few-Body Systems 55, 913 (2014)

B.F.Gibson, I.R.Afnan

6ΛH modeled as 4ΛH + n + n

NUCLEAR STRUCTURE 6H, 6He; calculated hypernuclei spectra, J, π, binding energies. Comparison with available data.

doi: 10.1007/s00601-014-0816-4
Citations: PlumX Metrics


2013CA02      Phys.Rev. C 87, 015801 (2013)

M.E.Carrillo-Serrano, I.C.Cloet, K.Tsushima, A.W.Thomas, I.R.Afnan

Variations of nuclear binding with quark masses

NUCLEAR STRUCTURE 7Li, 12C, 16O; calculated single-particle energies versus quark masses. 2,3H, 7Li, 12C, 16O; calculated variation of binding energy, and the 1S0 antibound pole position versus quark mass. Quark-meson coupling (QMD) and one boson-exchange (OBE) models. 7Li; calculated abundance using Big Bang nucleosynthesis computer code of Kawano.

doi: 10.1103/PhysRevC.87.015801
Citations: PlumX Metrics


2013GI04      Nucl.Phys. A914, 179c (2013)

B.F.Gibson, I.R.Afnan

A 4ΛH + n + n model of 6ΛH

NUCLEAR STRUCTURE 6H, 6He; calculated hypernuclei binding energy, Q.

doi: 10.1016/j.nuclphysa.2013.02.017
Citations: PlumX Metrics


2010AF04      Phys.Rev. C 82, 064002 (2010)

I.R.Afnan, B.F.Gibson

Model dependence of the 2H electric dipole moment

NUCLEAR STRUCTURE 2H; calculated electric dipole moment (EDM), matrix elements of the dipole operator using separable potential model description. Model dependence of deuteron EDM calculations.

doi: 10.1103/PhysRevC.82.064002
Citations: PlumX Metrics


2004AF01      Phys.Rev. C 69, 034010 (2004)

I.R.Afnan, D.R.Phillips

Three-body problem with short-range forces: Renormalized equations and regulator-independent results

NUCLEAR REACTIONS 2H(n, n), E=low; calculated phase shifts. Effective field theory, comparison with data.

doi: 10.1103/PhysRevC.69.034010
Citations: PlumX Metrics


2003AF01      Phys.Rev. C 67, 017001 (2003)

I.R.Afnan, B.F.Gibson

Λ-Λ interaction and ΛΛ6He

NUCLEAR STRUCTURE 6He; calculated ΛΛ hypernucleus binding energy vs ΛΛ scattering length. One-boson exchange model.

doi: 10.1103/PhysRevC.67.017001
Citations: PlumX Metrics


2003AF04      Phys.Rev. C 68, 035201 (2003)

I.R.Afnan, F.Bissey, J.Gomez, A.T.Katramatou, S.Liuti, W.Melnitchouk, G.G.Petratos, A.W.Thomas

Deep inelastic scattering from A = 3 nuclei and the neutron structure function

NUCLEAR REACTIONS 3H, 3He(e, e'X), E=high; analyzed structure functions, EMC effect; deduced ratio of neutron to proton structure functions.

doi: 10.1103/PhysRevC.68.035201
Citations: PlumX Metrics


2003AF08      Eur.Phys.J. A 18, 301 (2003)

I.R.Afnan, A.D.Lahiff

The Bethe-Salpeter equation and the Low Energy Theorems for πN scattering

doi: 10.1140/epja/i2002-10221-7
Citations: PlumX Metrics


2002LA27      Phys.Rev. C66, 044001 (2002)

A.D.Lahiff, I.R.Afnan

Unitarity and the Bethe-Salpeter equation

doi: 10.1103/PhysRevC.66.044001
Citations: PlumX Metrics


2001BI12      Phys.Rev. C64, 024004 (2001)

F.Bissey, A.W.Thomas, I.R.Afnan

Structure Functions for the Three-Nucleon System

NUCLEAR STRUCTURE 3H, 3He; calculated nucleon momentum distributions, unpolarized and polarized three-nucleon structure functions.

doi: 10.1103/PhysRevC.64.024004
Citations: PlumX Metrics


2000AF26      Phys.Lett. 493B, 36 (2000)

I.R.Afnan, F.Bissey, J.Gomez, A.T.Katramatou, W.Melnitchouk, G.G.Petratos, A.W.Thomas

Neutron Structure Function and A = 3 Mirror Nuclei

NUCLEAR REACTIONS 3H, 3He(e, e'), E=12 GeV; calculated ratio of neutron and proton structure functions. Faddeev wave functions method.

doi: 10.1016/S0370-2693(00)01012-1
Citations: PlumX Metrics


2000PH03      Phys.Rev. C61, 044002 (2000)

D.R.Phillips, I.R.Afnan, A.G.Henry-Edwards

Numerical Renormalization using Dimensional Regularization: A simple test case in the Lippmann-Schwinger equation

doi: 10.1103/PhysRevC.61.044002
Citations: PlumX Metrics


2000SA49      Phys.Lett. 493B, 288 (2000)

K.Saito, C.Boros, K.Tsushima, F.Bissey, I.R.Afnan, A.W.Thomas

Deep Inelastic Scattering on Asymmetric Nuclei

NUCLEAR STRUCTURE 3H, 3He; calculated structure functions for deep inelastic scattering, flavor asymmetry features.

doi: 10.1016/S0370-2693(00)01166-7
Citations: PlumX Metrics


1999LA19      Phys.Rev. C60, 024608 (1999)

A.D.Lahiff, I.R.Afnan

Solution of the Bethe-Salpeter Equation for Pion-Nucleon Scattering

doi: 10.1103/PhysRevC.60.024608
Citations: PlumX Metrics


1998AF04      Nucl.Phys. A639, 55c (1998)

I.R.Afnan

The Ξ- + d → n + Λ + Λ Reaction as a Probe of the ΛΛ Interaction

NUCLEAR STRUCTURE 6He; calculated ΛΛ hypernucleus binding energy.

doi: 10.1016/S0375-9474(98)00258-9
Citations: PlumX Metrics


1998AF05      Acta Phys.Pol. B29, 2397 (1998)

I.R.Afnan

The Dynamics of πN Scattering and the Baryon Spectrum


1998CA12      Nucl.Phys. A631, 776c (1998)

S.B.Carr, I.R.Afnan, B.F.Gibson

The ΛΛ Interaction and the Ξ- + d → n + Λ + Λ

doi: 10.1016/S0375-9474(98)00108-0
Citations: PlumX Metrics


1998CA17      Phys.Rev. C57, 2858 (1998)

S.B.Carr, I.R.Afnan, B.F.Gibson

Ξ-d → n ΛΛ and ΛΛ Final State Interaction

doi: 10.1103/PhysRevC.57.2858
Citations: PlumX Metrics


1997CA54      Nucl.Phys. A625, 143 (1997)

S.B.Carr, I.R.Afnan, B.F.Gibson

(Λ)(Λ)6He as a ΛΛ Interaction Constraint

doi: 10.1016/S0375-9474(97)00480-6
Citations: PlumX Metrics


1997LA30      Phys.Rev. C56, 2387 (1997)

A.D.Lahiff, I.R.Afnan

Role of Retardation in Three-Dimensional Relativistic Equations

doi: 10.1103/PhysRevC.56.2387
Citations: PlumX Metrics


1996PH02      Phys.Rev. C54, 1542 (1996); Erratum Phys.Rev. C55, 3178 (1997)

D.R.Phillips, I.R.Afnan

Solving the Four-Dimensional NN-πNN Equations for Scalars below the Meson-Production Threshold

doi: 10.1103/PhysRevC.54.1542
Citations: PlumX Metrics


1996PH04      Ann.Phys.(New York) 247, 19 (1996)

D.R.Phillips, I.R.Afnan

Covariant Four-Dimensional Scattering Equations for the NN → πNN System

doi: 10.1006/aphy.1996.0037
Citations: PlumX Metrics


1995CA09      Nucl.Phys. A585, 315c (1995)

S.B.Carr, I.R.Afnan, B.F.Gibson

The ΛΛ Interaction and Ξd Cross Sections

doi: 10.1016/0375-9474(94)00584-A
Citations: PlumX Metrics


1995VA20      Phys.Rev. C52, 554 (1995)

C.H.M.van Antwerpen, I.R.Afnan

Gauge Invariant Unitary Theory for Pion Photoproduction

doi: 10.1103/PhysRevC.52.554
Citations: PlumX Metrics


1994GI18      Prog.Theor.Phys.(Kyoto), Suppl. 117, 339 (1994)

B.F.Gibson, I.R.Afnan, J.A.Carlson, D.R.Lehman

Importance of Baryon-Baryon Coupling in Hypernuclei

doi: 10.1143/PTPS.117.339
Citations: PlumX Metrics


1994SA39      Phys.Rev. C50, 2756 (1994)

T.-Y.Saito, I.R.Afnan

How Important is the Three-Nucleon Force ( Question )

NUCLEAR STRUCTURE 3H; calculated three-body force contribution to binding energy. Perturbation theory.

doi: 10.1103/PhysRevC.50.2756
Citations: PlumX Metrics


1992ES04      Phys.Rev. C46, 2344 (1992)

A.Eskandarian, I.R.Afnan

α-d Resonances and the Low-Lying States of 6Li

NUCLEAR STRUCTURE 6Li; calculated levels, width. Three-body models, two-body nonlocal separable interactions, α-d resonances.

doi: 10.1103/PhysRevC.46.2344
Citations: PlumX Metrics


1990AF02      Phys.Rev. C41, 2787 (1990)

I.R.Afnan, B.F.Gibson

Hypertriton: Δ → Σ Σ → Δ Conversion and Tensor Forces

doi: 10.1103/PhysRevC.41.2787
Citations: PlumX Metrics


1989PE05      Phys.Rev. C40, 220 (1989)

B.C.Pearce, I.R.Afnan

Three-Body Unitarity, the Cloudy Bag Model, and the Roper Resonance

NUCLEAR REACTIONS 1n, 1H(π, π), E ≈ 20-380 MeV; calculated phase shifts vs E. Three-body unitarity, cloudy bag model.

doi: 10.1103/PhysRevC.40.220
Citations: PlumX Metrics


1987AF01      Nucl.Phys. A463, 443c (1987)

I.R.Afnan

Quark Versus Hadronic Degrees of Freedom in Light Nuclear System

NUCLEAR REACTIONS 1H(p-bar, p-bar), E=226 MeV; compiled polarization, spin correlation parameters; 1H(p-bar, γ), E at rest; compiled γ-spectrum; 1H(p, π), E ≤ 1000 MeV; compiled σ; 1H(polarized n, γ), E=478 MeV; compiled analyzing powers; 3He(π+, γ), (π-, γ), E=65 MeV; compiled σ ratio; 1H(π+, π+), (π-, π-), E=67-163 MeV; compiled differential σ.

doi: 10.1016/0375-9474(87)90688-9
Citations: PlumX Metrics


1985AF01      Phys.Rev. C31, 986 (1985)

I.R.Afnan, B.C.Pearce

Three-Body Unitarity and the K-Matrix Analyses of Dibaryon Resonances

NUCLEAR REACTIONS 2H(π, π), E(cm)=25-300 MeV; calculated phase shifts, inelasticities. K-matrix, Faddeev amplitudes.

doi: 10.1103/PhysRevC.31.986
Citations: PlumX Metrics


1985AF02      Phys.Rev. C31, 1821 (1985)

I.R.Afnan, R.J.McLeod

Polarization Observables in πd → πd and pp → πd and the NN-πNN Equations

NUCLEAR REACTIONS 1H(polarized p, π+), E=800 MeV; calculated σ(θ), analyzing power vs θ. 2H(π, π), E=256 MeV; calculated σ(θ), iT11(θ), T22(θ), T20(θ). Nucleon-nucleon plus pion-nucleon-nucleon equation.

doi: 10.1103/PhysRevC.31.1821
Citations: PlumX Metrics


1985BL08      Phys.Rev. C31, 1380 (1985)

B.Blankleider, I.R.Afnan

Relatioship between Partial Wave Amplitudes and Polarization Observables in pp → dπ+ and πd → πd

NUCLEAR REACTIONS 1H(polarized p, π+), E=567, 383, 800 MeV; calculated σ(θ), polarization transfer, correlation observables vs θ; deduced relation to partial wave amplitudes. Orthogonal function expansion.

doi: 10.1103/PhysRevC.31.1380
Citations: PlumX Metrics


1984PE17      Phys.Rev. C30, 2022 (1984)

B.C.Pearce, I.R.Afnan

Resonance Poles in Three-Body Systems

NUCLEAR REACTIONS 2H(π, π), E ≤ 0-300 MeV; calculated resonance poles; deduced amplitude analytic continuation. Complex plane.

doi: 10.1103/PhysRevC.30.2022
Citations: PlumX Metrics


1981AF01      Phys.Rev. C23, 845 (1981)

I.R.Afnan, A.T.Stelbovics

Pion-Deuteron Optical Potential

NUCLEAR REACTIONS 2H(π, π), E(cm)=30-130 MeV; calculated σ(E); deduced convergence properties of multiple scattering series.Three-body approach.

doi: 10.1103/PhysRevC.23.845
Citations: PlumX Metrics


1981BL12      Phys.Rev. C24, 1572 (1981)

B.Blankleider, I.R.Afnan

Unified Theory of NN → πd, πd → πd, and NN → NN Reactions

NUCLEAR REACTIONS 2H(π+, d), E=25-250 MeV; calculated σ(total, E); 1H(p, π+), E=382.9-799.3 MeV; calculated σ(θ); 2H(π+, π+), E=47.7 MeV; calculated σ(θ); 2H(π+, π+), E=50-350 MeV; calculated σ(total, E); 2H(π+, π+), E=140, 256 MeV; calculated iT11(θ, d), T20(θ, d). Nucleon-nucleon phase shift input, unified theory.

doi: 10.1103/PhysRevC.24.1572
Citations: PlumX Metrics


1980AF01      Phys.Lett. 93B, 367 (1980)

I.R.Afnan, B.Blankleider

The Effect of Absorption on Low Energy π-d Scattering

NUCLEAR REACTIONS 2H(π+, π+), (π+, p), E=47.7 MeV; calculated σ(θ); deduced absorption effects. 1H(p, p), E=380, 425 MeV; calculated phase shifts. Faddeev equations, channel coupling effects.

doi: 10.1016/0370-2693(80)90344-5
Citations: PlumX Metrics


1980PA12      Phys.Rev. C22, 823 (1980)

G.L.Payne, J.L.Friar, B.F.Gibson, I.R.Afnan

Configuration Space Faddeev Calculations. I. Triton Ground State Properties

NUCLEAR STRUCTURE 3H; calculated binding energy, wave function, rms radius. Faddeev equations.

doi: 10.1103/PhysRevC.22.823
Citations: PlumX Metrics


1978BI02      Phys.Rev. C17, 326 (1978)

N.D.Birrell, I.R.Afnan

Three-Nucleon Results for One-Boson-Exchange Potential

NUCLEAR STRUCTURE 3H; calculated binding energy. 3He; calculated charge form factor. Faddeev approach.

doi: 10.1103/PhysRevC.17.326
Citations: PlumX Metrics


1977AF01      Phys.Rev. C15, 2143 (1977)

I.R.Afnan, A.W.Thomas

Mass Extrapolation of the Amplitude for Pion Production in N-N Collision

NUCLEAR REACTIONS 2H(π-, 2n); calculated S-wave π production as function of produced pion.

doi: 10.1103/PhysRevC.15.2143
Citations: PlumX Metrics


1977AF02      Phys.Rev. C16, 823 (1977)

I.R.Afnan, N.D.Birrell

Comparison of the Unitary Pole and Adhikari-Sloan Expansions in the Three-Nucleon System

NUCLEAR STRUCTURE 3H; calculated binding energy. 3He; calculated charge form factor.

doi: 10.1103/PhysRevC.16.823
Citations: PlumX Metrics


1975AF01      Phys.Rev. C12, 293 (1975)

I.R.Afnan, J.M.Read

Comparison of Realistic Local and One-Boson-Exchange Potentials in the Three-Nucleon System

NUCLEAR STRUCTURE 3H; calculated binding energy, doublet scattering length. Faddeev approach, realistic n-n interactions.

doi: 10.1103/PhysRevC.12.293
Citations: PlumX Metrics


1973AF03      Phys.Rev. C8, 1294 (1973)

I.R.Afnan, J.M.Read

T-Matrix Perturbation Theory for the Three-Nucleon System with the Reid Potential

NUCLEAR STRUCTURE 3H; calculated binding energy. T-matrix perturbation theory.

doi: 10.1103/PhysRevC.8.1294
Citations: PlumX Metrics


1971AF04      Nucl.Phys. A170, 625 (1971)

I.R.Afnan, D.M.Clement, F.J.D.Serduke

The Tensor Force in Nuclear Saturation

NUCLEAR STRUCTURE 4He; calculated binding energy. Tensor force.

doi: 10.1016/0375-9474(71)90242-9
Citations: PlumX Metrics


1971SE08      Phys.Rev. C4, 1002 (1971)

F.J.D.Serduke, I.R.Afnan

Redetermination of the Singlet Effective-Range Parameters of the Mongan Separable Potentials

NUCLEAR STRUCTURE 3H; calculated binding energy. Mongan S-wave potential.

doi: 10.1103/PhysRevC.4.1002
Citations: PlumX Metrics


1971TH04      Phys.Rev.Lett. 26, 906 (1971)

A.W.Thomas, I.R.Afnan

Importance of the D-State Probability of the Deuteron in Threshold p + p→π + d

NUCLEAR REACTIONS 1H(p, π), E approx threshold; calculated deuteron D-state probability on threshold. Realistic local, nonlocal separable N-N interactions.

doi: 10.1103/PhysRevLett.26.906
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1969AF02      Phys.Rev. 185, 1231 (1969)

I.R.Afnan, D.M.Clement, W.W.True

Hartree-Fock Descriptions of Excited States in O16

NUCLEAR STRUCTURE 16O; calculated levels. Hartree-Fock method.

doi: 10.1103/PhysRev.185.1231
Citations: PlumX Metrics


1969AF03      Phys.Rev. 186, 984 (1969)

I.R.Afnan

Cluster Expansion Method in Light Nuclei

NUCLEAR STRUCTURE 3H, 4He; calculated binding energy. Cluster expansion method.

doi: 10.1103/PhysRev.186.984
Citations: PlumX Metrics


1967AF01      Phys.Rev. 163, 1016 (1967)

I.R.Afnan

Shell-Model Theory of Nuclear Reactions in Deformed Nuclei

doi: 10.1103/PhysRev.163.1016
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