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NSR database version of April 26, 2024.

Search: Author = S.Janssen

Found 20 matches.

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2007BL20      Eur.Phys.J. A 32, 219 (2007)

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

Double pion photoproduction off 40Ca

doi: 10.1140/epja/i2006-10383-2
Citations: PlumX Metrics

2004IR01      Nucl.Phys. A740, 147 (2004)

D.G.Ireland, S.Janssen, J.Ryckebusch

A genetic algorithm analysis of N* resonances in p(γ, K+)Λ reactions

NUCLEAR REACTIONS 1H(γ, K+X), E=high; analyzed hyperon production σ, σ(θ), polarization data; deduced resonance contributions. Genetic algorithm fitting procedure.

doi: 10.1016/j.nuclphysa.2004.05.007
Citations: PlumX Metrics

2004KO01      Phys.Lett. B 578, 63 (2004)

M.Kotulla, J.Ahrens, J.R.M.Annand, R.Beck, D.Hornidge, S.Janssen, B.Krusche, J.C.McGeorge, I.J.D.MacGregor, J.G.Messchendorp, V.Metag, R.Novotny, M.Pfeiffer, R.O.Owens, M.Rost, S.Schadmand, D.P.Watts

Double π0 photoproduction off the proton at threshold

NUCLEAR REACTIONS 1H(γ, 2π0), E=300-425 MeV; measured invariant mass spectra, σ(θ), σ. Tagged photons. Comparison with model predictions.

doi: 10.1016/j.physletb.2003.10.056
Citations: PlumX Metrics

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
Citations: PlumX Metrics

2004PF01      Phys.Rev.Lett. 92, 252001 (2004); Comment Phys.Rev.Lett. 94, 049101 (2005)

M.Pfeiffer, J.Ahrens, J.R.M.Annand, R.Beck, G.Caselotti, S.Cherepnya, K.Fohl, L.S.Fog, D.Hornidge, S.Janssen, V.Kashevarov, R.Kondratiev, M.Kotulla, B.Krusche, J.C.McGeorge, I.J.D.MacGregor, K.Mengel, J.G.Messchendorp, V.Metag, R.Novotny, M.Rost, S.Sack, R.Sanderson, S.Schadmand, A.Thomas, D.P.Watts

Photoproduction of η-Mesic 3He

NUCLEAR REACTIONS 3He(γ, X), E=600-820 MeV; measured η-meson production σ, σ(θ); deduced resonance structure. 3He deduced quasibound η-mesic state energy, width.

doi: 10.1103/PhysRevLett.92.252001
Citations: PlumX Metrics

2004VA11      Eur.Phys.J. A 20, 283 (2004)

T.Van Cauteren, D.Merten, T.Corthals, S.Janssen, B.Metsch, H.-R.Petry, J.Ryckebusch

Electric and magnetic form factors of strange baryons

doi: 10.1140/epja/i2003-10158-3
Citations: PlumX Metrics

2003JA04      Phys.Rev. C 67, 052201 (2003)

S.Janssen, J.Ryckebusch, T.Van Cauteren

Constraints on background contributions from K+Λ electroproduction

NUCLEAR REACTIONS 1H(e, e'K+), E=high; calculated hyperon production response functions, σ(Q2), background contributions. Tree-level hydrodynamical model, comparison with data.

doi: 10.1103/PhysRevC.67.052201
Citations: PlumX Metrics

2003RY02      Nucl.Phys. A728, 226 (2003)

J.Ryckebusch, D.Debruyne, P.Lava, S.Janssen, B.Van Overmeire, T.Van Cauteren

Relativistic formulation of Glauber theory for A(e, e'p) reactions

NUCLEAR REACTIONS 1n, 1H(p, X), (p, p), E at 0.1-10 GeV/c; analyzed total and elastic σ; deduced parameters. 4He, 12C, 56Fe, 208Pb(e, e'p), E not given; calculated Glauber phase vs proton energy. 4He(e, e'p), E=4.8 GeV; calculated response functions. Glauber multiple scattering theory.

doi: 10.1016/j.nuclphysa.2003.08.022
Citations: PlumX Metrics

2002DE07      Phys.Lett. 527B, 62 (2002)

D.Debruyne, J.Ryckebusch, S.Janssen, T.Van Cauteren

Bridging Two Ways of Describing Final-State Interactions in A(e, e'p) Reactions

NUCLEAR REACTIONS 16O(e, e'p), E=2.4 GeV; 12C(e, e'p), E=579 MeV; calculated structure functions, polarization observables, nuclear transparency. Relativistic eikonal approximation, Glauber theory, comparisons with data.

doi: 10.1016/S0370-2693(01)01511-8
Citations: PlumX Metrics

2002JA01      Phys.Rev. C65, 015201 (2002)

S.Janssen, J.Ryckebusch, D.Debruyne, T.Van Cauteren

Kaon Photoproduction: Background contributions, form factors, and missing resonances

NUCLEAR REACTIONS 1H(γ, K+), E=900-2000 MeV; calculated σ, background contributions; deduced form factors, resonance parameters. Field-theoretic approach, comparison with data.

doi: 10.1103/PhysRevC.65.015201
Citations: PlumX Metrics

2002JA10      Acta Phys.Pol. B33, 935 (2002)

S.Janssen, for the TAPS and A2 Collaborations

2π0-Photoproduction on Nuclei

NUCLEAR REACTIONS 1H, 12C, Pb(γ, 2π0X), E=400-460 MeV; measured pion pair invariant mass distributions; deduced target mass dependence.

2002JA15      Phys.Rev. C66, 035202 (2002)

S.Janssen, J.Ryckebusch, D.Debruyne, T.Van Cauteren

Σ Photoproduction in the Resonance Region

NUCLEAR REACTIONS 1H(γ, K+X), (γ, K0X), E=1000-2000 MeV; calculated Σ photoproduction σ, σ(θ); deduced possible resonance contributions. Comparisons with data.

doi: 10.1103/PhysRevC.66.035202
Citations: PlumX Metrics

2002KO59      Phys.Rev.Lett. 89, 272001 (2002)

M.Kotulla, J.Ahrens, J.R.M.Annand, R.Beck, G.Caselotti, L.S.Fog, D.Hornidge, S.Janssen, B.Krusche, J.C.McGeorge, I.J.D.McGregor, K.Mengel, J.G.Messchendorp, V.Metag, R.Novotny, M.Pfeiffer, M.Rost, S.Sack, R.Sanderson, S.Schadmand, D.P.Watts

The Reaction γp → π0γ'p and the Magnetic Dipole Moment of the Δ+(1232) Resonance

NUCLEAR REACTIONS 1H(γ, γ'π0), E(cm)=1221-1331 MeV; measured missing mass, σ(E, θ); deduced Δ resonance dipole moment.

doi: 10.1103/PhysRevLett.89.272001
Citations: PlumX Metrics

2002ME22      Phys.Rev.Lett. 89, 222302 (2002)

J.G.Messchendorp, S.Janssen, M.Kotulla, J.Ahrens, J.R.H.Annand, R.Beck, F.Bloch, G.Caselotti, L.Fog, D.Hornidge, B.Krusche, W.Langgartner, J.C.McGeorge, I.J.D.MacGregor, K.Mengel, V.Metag, R.Novotny, R.O.Owens, M.Pfeiffer, S.Sack, R.Sanderson, S.Schadmand

In-Medium Modifications of the ππ Interaction in Photon-Induced Reactions

NUCLEAR REACTIONS 1H, 12C, Pb(γ, 2π0X), (γ, π0π+X), (γ, π0π-X), E=400-460 MeV; measured two-pion mass distributions, σ(E); deduced in-medium modification features. Comparison with model predictions.

doi: 10.1103/PhysRevLett.89.222302
Citations: PlumX Metrics

2001JA13      Eur.Phys.J. A 11, 105 (2001)

S.Janssen, J.Ryckebusch, W.Van Nespen, D.Debruyne, T.Van Cauteren

The Role of Hyperon Resonances in p(γ, K+)Λ Processes

NUCLEAR REACTIONS 1H(γ, K+), E ≈ 900-2000 MeV; calculated hyperon production σ, σ(θ); deduced role of hyperon resonances. Effective Lagrangian approach, comparison with data.

doi: 10.1007/s100500170100
Citations: PlumX Metrics

2000DE38      Phys.Rev. C62, 024611 (2000)

D.Debruyne, J.Ryckebusch, W.Van Nespen, S.Janssen

Relativistic Eikonal Approximation in High-Energy A(e, e'p) Reactions

NUCLEAR REACTIONS 12C, 16O(e, e'p), E=high; calculated σ(E, θ), left-right asymmetry. Fully relativistic eikonal framework. Comparison with data.

doi: 10.1103/PhysRevC.62.024611
Citations: PlumX Metrics

2000JA05      Nucl.Phys. A672, 285 (2000)

S.Janssen, J.Ryckebusch, W.Van Nespen, D.Debruyne

Spin-Dependent Correlations and the Semi-Exclusive 16O(e, e'p) Reaction

NUCLEAR REACTIONS 16O(e, e'p), E=1.2-2.5 GeV; calculated σ(E, θ); deduced role of nucleon-nucleon correlations.

doi: 10.1016/S0375-9474(00)00058-0
Citations: PlumX Metrics

2000RY01      Phys.Rev. C61, 021603 (2000)

J.Ryckebusch, S.Janssen, W.Van Nespen, D.Debruyne

Tensor Correlations in Nuclei and Exclusive Electron Scattering

NUCLEAR REACTIONS 16O(e, e'p), (e, e'np), E=855 MeV; calculated σ(θ), recoil polarization vs missing momentum; deduced effects of tensor correlations.

doi: 10.1103/PhysRevC.61.021603
Citations: PlumX Metrics

2000TE02      Phys.Rev.Lett. 84, 1990 (2000)

D.R.Temprano, J.Mesot, S.Janssen, K.Conder, A.Furrer, H.Mutka, K.A.Muller

Large Isotope Effect on the Pseudogap in the High-Temperature Superconductor HoBa2Cu4O8

NUCLEAR MOMENTS 16,18O; analyzed intrinsic linewidths in superconducting material; deduced isotope effect in relaxation rate.

doi: 10.1103/PhysRevLett.84.1990
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1999RY06      Phys.Rev. C60, 034604 (1999)

J.Ryckebusch, D.Debruyne, W.Van Nespen, S.Janssen

Meson and Isobar Degrees of Freedom in A(e(pol), e'p(pol)) Reactions at 0.2 ≤ Q2 ≤ 0.8 (GeV/c)2

NUCLEAR REACTIONS 16O(e, e'2p), E=580 MeV; calculated missing momentum distributions vs excitation energy. 16O(polarized e, e'p), (polarized e, e'n), E=855 MeV; 12C(polarized e, e'p), E=579 MeV; 208Pb(polarized e, e'p), E=462 MeV; calculated reduced σ(E, θ), recoil polarization observables; deduced effects of meson, isobar degrees of freedom.

doi: 10.1103/PhysRevC.60.034604
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