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NSR database version of April 27, 2024.

Search: Author = J.Lehr

Found 14 matches.

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2004FA13      Prog.Part.Nucl.Phys. 53, 25 (2004)

T.Falter, J.Lehr, U.Mosel, P.Muehlich, M.Post

In-medium properties of hadrons -- observables

doi: 10.1016/j.ppnp.2004.02.012
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2004KR16      Eur.Phys.J. A 22, 277 (2004)

B.Krusche, J.Lehr, J.Ahrens, J.R.M.Annand, R.Beck, F.Bloch, L.S.Fog, D.Hornidge, S.Janssen, M.Kotulla, J.C.McGeorge, I.J.D.MacGregor, J.Messchendorp, V.Metag, U.Mosel, R.Novotny, R.O.Owens, M.Pfeiffer, R.Sanderson, S.Schadmand, D.P.Watts

Photoproduction of π⁰-mesons from nuclei

NUCLEAR REACTIONS ¹²C, ⁴⁰Ca, ⁹³Nb, ²⁰⁸Pb(γ, π⁰X), E=200-800 MeV; measured missing-energy and missing-mass spectra, σ, σ(E, θ); deduced in-medium effects. Tagged photons, comparison with model predictions, previous results.

doi: 10.1140/epja/i2004-10033-9
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2004KR17      Eur.Phys.J. A 22, 347 (2004)

B.Krusche, J.Lehr, F.Bloch, M.Kotulla, V.Metag, U.Mosel, S.Schadmand

Surface and volume effects in the photoabsorption of nuclei

NUCLEAR REACTIONS ²H, C, Ca, Nb, Pb(γ, X), E=200-900 MeV; analyzed meson production σ; deduced surface and volume components, resonance effects.

doi: 10.1140/epja/i2004-10098-4
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2004LE08      Phys.Rev. C 69, 024603 (2004)

J.Lehr, U.Mosel

Influence of the nucleon spectral function in photon and electron induced reactions on nuclei

NUCLEAR REACTIONS ⁴⁰Ca(γ, X), E=0.5-1 GeV; ⁴⁰Ca(e, e'X), E=1.8-3.2 GeV; calculated η-meson production σ, medium effects. Transport model, comparison with data.

doi: 10.1103/PhysRevC.69.024603
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2003LE22      Phys.Rev. C 68, 044601 (2003)

J.Lehr, M.Post, U.Mosel

In-medium modifications of the S₁₁(1535) resonance and η photoproduction

NUCLEAR REACTIONS ¹H, C, Al, Ca, Cu, Nb, Pb(γ, X), E ≈ 0.6-1 GeV; calculated η-meson production σ; deduced role of in-medium resonance modification. Transport model, comparison with data.

doi: 10.1103/PhysRevC.68.044601
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2003LE23      Phys.Rev. C 68, 044603 (2003)

J.Lehr, U.Mosel

η electroproduction on nuclei in the nucleon resonance region

NUCLEAR REACTIONS ⁴⁰Ca(e, e'X), (e, e'π⁰X), E=3.2, 4 GeV; ⁴⁰Ca(γ, X), E=0.6-1 GeV; calculated pion and η meson production σ, final state interaction effects. Transport model.

doi: 10.1103/PhysRevC.68.044603
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2003MU04      Phys.Rev. C 67, 024605 (2003)

P.Muhlich, T.Falter, C.Greiner, J.Lehr, M.Post, U.Mosel

Photoproduction of φ mesons from nuclei

NUCLEAR REACTIONS ¹H(γ, X), E=2-6 GeV; calculated φ meson production σ, σ(θ). ⁴⁰Ca(γ, K⁺K^-X), E=2.4 GeV; calculated φ meson production associated σ, kaon pair invariant mass spectra, final state interaction and other medium effects. Semiclassical transport model.

doi: 10.1103/PhysRevC.67.024605
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2002LE06      Nucl.Phys. A699, 324c (2002)

J.Lehr, U.Mosel

Photon and Electron Induced Particle Production on Nuclei

doi: 10.1016/S0375-9474(01)01512-3
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2002LE14      Nucl.Phys. A703, 393 (2002)

J.Lehr, H.Lenske, S.Leupold, U.Mosel

Nuclear Matter Spectral Functions by Transport Theory

doi: 10.1016/S0375-9474(01)01534-2
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2001LE33      Phys.Rev. C64, 042202 (2001)

J.Lehr, U.Mosel

In-Medium Broadening of Nucleon Resonances

NUCLEAR REACTIONS ⁴⁰Ca(γ, π⁰X), E=0.4-0.9 GeV; calculated pion production σ; deduced role of in-medium nucleon resonance broadening. Comparisons with data.

doi: 10.1103/PhysRevC.64.042202
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2000LE18      Nucl.Phys. A671, 503 (2000)

J.Lehr, M.Effenberger, U.Mosel

Electron and Photon Induced Reactions on Nuclei in the Nucleon Resonance Region

NUCLEAR REACTIONS ¹H(γ, π⁰), (γ, π⁺), (γ, X), E(cm)=1-2 GeV; analyzed σ(Q²); deduced parameters. ¹²C, ⁴⁰Ca, ⁵⁶Fe, ²⁰⁸Pb(e, e'X), E ≈ 0.6 GeV; ¹²C(e, e'X), E=0.96-1.5 GeV; calculated σ(E, θ); deduced resonance effects. ⁴⁰Ca(γ, X), (γ, π⁰X), (γ, 2π⁰X), (γ, π⁺π^-X), E=high; calculated σ(Q²), meson production features; deduced resonance effects. Comparisons with data.

doi: 10.1016/S0375-9474(99)00845-3
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2000LE24      Phys.Lett. 483B, 324 (2000)

J.Lehr, M.Effenberger, H.Lenske, S.Leupold, U.Mosel

Transport Theoretical Approach to the Nucleon Spectral Function in Nuclear Matter

doi: 10.1016/S0370-2693(00)00590-6
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1969HO21      Phys.Letters 29A, 553 (1969)

C.Hohenemser, R.Reno, H.C.Benski, J.Lehr

Perturbed Angular Correlation Experiment for ⁵⁷Fe in a Ni Host

RADIOACTIVITY ⁵⁷Co; measured γγ(θ, H, t) in Ni; deduced hyperfine field.

doi: 10.1016/0375-9601(69)90434-4
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1969HO28      Phys.Rev. 184, 298 (1969)

C.Hohenemser, R.Reno, H.C.Benski, J.Lehr

Time-Differential Perturbed Angular-Correlation Experiment for ⁵⁷Fe in A Ni Host, and a Comparison with the Mossbauer Effect

RADIOACTIVITY ⁵⁷Co; measured γγ(θ, H, t). ⁵⁷Fe level deduced T_1/2.

doi: 10.1103/PhysRev.184.298
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