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NSR database version of April 27, 2024.

Search: Author = W.B.Kaufmann

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2005HI11      Phys.Rev. C 71, 065201 (2005)

G.E.Hite, W.B.Kaufmann, R.J.Jacob

New evaluation of the πNΣ term

doi: 10.1103/PhysRevC.71.065201
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1999KA57      Phys.Rev. C60, 055204 (1999)

W.B.Kaufmann, G.E.Hite

Tests of Current Algebra and Partially Conserved Axial-Vector Current in the Subthreshold Region of the Pion-Nucleon System

doi: 10.1103/PhysRevC.60.055204
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1998GI02      Phys.Rev. C57, 784 (1998)

W.R.Gibbs, L.Ai, W.B.Kaufmann

Low-Energy Pion-Nucleon Scattering

NUCLEAR REACTIONS ¹H(π⁺, π⁺), (π^-, π^-), E ≈ 30-90 MeV; analyzed data; deduced pion-nucleon coupling constant, scattering volumes, subthreshold Σ term, off-shell amplitudes. Several data sets used.

doi: 10.1103/PhysRevC.57.784
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1998HI03      Phys.Rev. C57, 931 (1998)

G.E.Hite, W.B.Kaufmann

ππ Scattering Amplitudes in the Subthreshold Region

doi: 10.1103/PhysRevC.57.931
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1998NU05      Phys.Rev. C58, 2292 (1998)

M.Nuseirat, M.A.K.Lodhi, M.O.El-Ghossain, W.R.Gibbs, W.B.Kaufmann

Energy Dependence of Pion Double Charge Exchange

NUCLEAR REACTIONS ¹⁴C, ^42,44,48Ca(π⁺, π^-), E < 250 MeV; calculated σ(E, θ=10°); deduced reaction mechanism possible short-range corrections. Comparison with data.

doi: 10.1103/PhysRevC.58.2292
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1997KA08      Phys.Lett. 390B, 18 (1997)

W.B.Kaufmann, G.E.Hite

ππ Scattering Amplitudes within the Sub-Threshold Triangle

doi: 10.1016/S0370-2693(96)01390-1
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1995GI08      Phys.Rev.Lett. 74, 3740 (1995)

W.R.Gibbs, A.Li, W.B.Kaufmann

Isospin Breaking in Low-Energy Pion-Nucleon Scattering

NUCLEAR REACTIONS ¹H(π⁺, π⁺), (π^-, π^-), (π^-, π⁰), E=30-50 MeV; analyzed amplitudes obtained from data; deduced clear iso-spin breaking indications.

doi: 10.1103/PhysRevLett.74.3740
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1992KA35      Phys.Rev. C46, 1474 (1992)

W.B.Kaufmann, P.B.Siegel, W.R.Gibbs

Deeply Bound Pionic Atoms Via the (π^-, p) Reactions

NUCLEAR REACTIONS ⁵⁸Ni(π^-, p), E=20-50 MeV; ⁵⁸Ni(π^-, n), E=50 MeV; calculated σ(θ), pion capture of 1s atomic level. Distorted wave impulse approximation, direct capture into atomic level.

ATOMIC PHYSICS ⁵⁸Ni(π^-, p), E=20-50 MeV; ⁵⁸Ni(π^-, n), E=50 MeV; calculated σ(θ), pion capture of 1s atomic level. Distorted wave impulse approximation, direct capture into atomic level.

doi: 10.1103/PhysRevC.46.1474
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1989GI08      Phys.Lett. 231B, 6 (1989)

W.R.Gibbs, W.B.Kaufmann, J.-P.Dedonder

The Pion-Nucleus Resonance and Nuclear Translucence

NUCLEAR REACTIONS ¹²C(π, π), E=10-80 MeV; calculated pion-nucleus s-wave phase shift; deduced nuclear translucence effect.

doi: 10.1016/0370-2693(89)90102-0
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1989KA27      Phys.Rev. C40, 1729 (1989)

W.B.Kaufmann, W.R.Gibbs

K⁺-Nucleus Total Cross Section Analysis

NUCLEAR REACTIONS ²H, ⁶Li, ¹²C, ¹⁶O, ²⁸Si(K⁺, X), E at 550-800 MeV/c; analyzed σ extraction methods; deduced corrections.

doi: 10.1103/PhysRevC.40.1729
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1989LE11      Phys.Rev. C39, 2356 (1989)

M.J.Leitch, H.W.Baer, R.L.Burman, C.L.Morris, J.N.Knudson, J.R.Comfort, D.H.Wright, R.Gilman, S.H.Rokni, E.Piasetzky, Z.Weinfeld, W.R.Gibbs, W.B.Kaufmann

¹⁴C(π⁺, π^-)¹⁴O Reaction between 19 and 80 MeV

NUCLEAR REACTIONS ¹⁴C(π⁺, π^-)¹⁴O, E=19-80 MeV; measured σ(θ) vs E. ¹⁴O deduced double IAS excitation. DWIA, optical model.

doi: 10.1103/PhysRevC.39.2356
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1988AU05      Phys.Rev. C38, 1277 (1988)

N.Auerbach, W.R.Gibbs, J.N.Ginocchio, W.B.Kaufmann

Pion-Nucleus Double Charge Exchange and the Nuclear Shell Model

NUCLEAR REACTIONS ^42,44,46,48Ca, ^46,48,50Ti, ⁵²Cr, ⁵⁴Fe(π⁺, π^-), E=35, 45, 292 MeV; calculated ground, IAS transition σ(θ). Shell model.

doi: 10.1103/PhysRevC.38.1277
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1987KA03      Phys.Rev. C35, 838 (1987)

W.B.Kaufmann, W.R.Gibbs

Deser-Goldberger-Baumann-Thirring Formula for π^-p Atoms

NUCLEAR REACTIONS ¹n(π⁰, π⁰), E=3.3-6.5 MeV; calculated σ(E). ¹H(π^-, π^-), E not given; calculated scattering lengths. Dester-Goldberger-Baumann-Thirring formula.

ATOMIC PHYSICS, Mesic-Atoms ¹H; calculated pionic level shifts, widths. Deser-Goldberger-Baumann-Thirring formula.

doi: 10.1103/PhysRevC.35.838
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1986KA02      Phys.Lett. 166B, 279 (1986)

W.B.Kaufmann, H.Pilkuhn

Line Widths of Antiprotonic Atoms

ATOMIC PHYSICS ⁴He, ^6,7Li, ¹²C, ¹⁴N, ^16,17,18O, ¹⁹F, ²³Na, ³¹P, ³²S, ³⁵Cl, ³⁹K, ⁵⁶Fe, ⁸⁹Y, Zr, ¹²⁰Sn, ¹²⁷I, ¹³⁸Ba, Pr, ¹⁷⁴Yb; calculated antiprotonic atom level widths. Annihilation probabilities on nucleons.

doi: 10.1016/0370-2693(86)90798-7
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1985SI09      Phys.Rev. C31, 2184 (1985)

P.B.Siegel, W.B.Kaufmann, W.R.Gibbs

K⁺ as a Probe of Partial Deconfinement in Nuclei

NUCLEAR REACTIONS ¹²C, ⁴⁰Ca(K⁺, K⁺), E at 300-800 MeV/c; calculated σ(θ), σ(E), σ(¹²C)/σ(²H); deduced K⁺-nucleon interaction, phase shift nucleon size dependence.

doi: 10.1103/PhysRevC.31.2184
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1984GI11      Phys.Lett. 145B, 1 (1984)

W.R.Gibbs, W.B.Kaufmann

Antiprotonic Atomic Energy Levels via the (p(bar), p) Reaction

NUCLEAR REACTIONS ³¹P(p-bar, p), E=150 MeV; calculated σ(θ). ³¹P, ¹⁹F, ²³Na(p-bar, p), E=100 MeV; calculated σ(θ=0°); deduced possible antiprotonic atom level detection. DWIA.

doi: 10.1016/0370-2693(84)90934-1
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1984SI13      Phys.Rev. C30, 1256 (1984)

P.B.Siegel, W.B.Kaufmann, W.R.Gibbs

K⁺-Nucleus Elastic Scattering and Charge Exchange

NUCLEAR REACTIONS ¹²C, ⁴⁰Ca(K⁺, K⁺), E=446.4, 425, 433, 440 MeV; ¹³C(K⁺, K⁰), E=100-400 MeV; calculated σ(θ), σ(θ) vs E; deduced medium effects. DWIA analysis, multiple scattering theory.

doi: 10.1103/PhysRevC.30.1256
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1983KA19      Phys.Rev. C28, 1286 (1983)

W.B.Kaufmann, W.R.Gibbs

Nuclear Medium Effects in Pion Elastic Scattering and Charge Exchange

NUCLEAR REACTIONS ¹²C(π⁺, π⁺), E=165 MeV; calculated σ(θ). ⁷Li, ¹⁵N, ¹³C(π⁺, π⁰), E=40-240 MeV; calculated σ(0°), σ vs E, σ(θ); deduced binding, Pauli blocking correction effects. Pion-nucleus optical model, three-body approximation.

doi: 10.1103/PhysRevC.28.1286
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1976GI01      Phys.Rev.Lett. 36, 85 (1976)

W.R.Gibbs, B.F.Gibson, A.T.Hess, G.J.Stephenson, Jr., W.B.Kaufmann

Pion Charge-Exchange Scattering from Light Nuclei

NUCLEAR REACTIONS ⁷Li, ¹⁰B, ¹³C(π⁺, π⁰); calculated σ(E).

doi: 10.1103/PhysRevLett.36.85
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1976GI06      Phys.Rev. C13, 2433 (1976)

W.R.Gibbs, B.F.Gibson, A.T.Hess, G.J.Stephenson, Jr., W.B.Kaufmann

Elastic Pion-⁴He Scattering

NUCLEAR REACTIONS ⁴He(π⁺, π⁺), (π^-, π^-), E=24-110 MeV; calculated σ(θ).

doi: 10.1103/PhysRevC.13.2433
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1974KA07      Phys.Rev. C9, 1340 (1974)

W.B.Kaufmann, J.C.Jackson, W.R.Gibbs

Charge-Exchange Reactions on Light Nuclei in a Multiple-Scattering Formalism

NUCLEAR REACTIONS ¹⁸O(π⁺, π⁰), E=180 MeV; calculated σ(E); ¹⁸O(π⁺, π^-), E=180 MeV; calculated σ(E); ¹³C(π⁺, π⁰), E=30-200 MeV; calculated σ(E); ¹³C(π⁺, π⁰), E=180 MeV; calculated σ(θ); ⁹Be(π⁺, π⁰), E=30-250 MeV; calculated σ(E); ⁹Be(π⁺, π^-), E=30-250 MeV; calculated σ(E) to T=3/2 final states; ⁹Be(π⁺, π⁰), E=175 MeV; calculated σ(θ) to ground, sum of final states; ⁹Be(π⁺, π^-), E=175 MeV; calculated σ(θ) to T=3/2 final states; ¹¹B(π⁺, π⁰), E=20-250 MeV; calculated σ(E) to ground, sum of final states.

doi: 10.1103/PhysRevC.9.1340
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