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NSR database version of May 30, 2024.

Search: Author = O.Hanstein

Found 10 matches.

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2001KA23      Nucl.Phys. A684, 321c (2001)

S.S.Kamalov, D.Drechsel, O.Hanstein, L.Tiator, S.N.Yang

Unitary Isobar (MAID) and Dynamical Models for Pion Electroproduction

doi: 10.1016/S0375-9474(01)00427-4
Citations: PlumX Metrics


2001KA45      Phys.Rev. C64, 032201 (2001)

S.S.Kamalov, S.N.Yang, D.Drechsel, O.Hanstein, L.Tiator

γ*N → Δ Transition Form Factors: A new analysis of data on p(e, e'p)π0 at Q2 = 2.8 and 4.0 (GeV/c)2

NUCLEAR REACTIONS 1H(e, e'π0), E=high; analyzed σ(E, θ), related data; deduced helicity amplitudes, Δ resonance production form factors.

doi: 10.1103/PhysRevC.64.032201
Citations: PlumX Metrics


2001TI05      Nucl.Phys. A689, 205c (2001)

L.Tiator, D.Drechsel, O.Hanstein, S.S.Kamalov, S.N.Yang

The E2/M1 and C2/M1 Ratios and Form Factors in N → Δ Transitions

doi: 10.1016/S0375-9474(01)00835-1
Citations: PlumX Metrics


2000BE05      Phys.Rev. C61, 035204 (2000)

R.Beck, H.P.Krahn, J.Ahrens, J.R.M.Annand, H.J.Arends, G.Audit, A.Braghieri, N.d'Hose, D.Drechsel, O.Hanstein, J.C.McGeorge, R.O.Owens, P.Pedroni, T.Pinelli, G.Tamas, L.Tiator, Th.Walcher

Determination of the E2/M1 Ratio in the γN → Δ(1232) Transition from a Simultaneous Measurement of p(γ(pol), p)π0 and p(γ(pol), π+)n

NUCLEAR REACTIONS 1H(polarized γ, π0), (polarized γ, π+), E=270-420 MeV; measured σ(θ), asymmetry; deduced Δ resonance associated E2/M1 ratio. Tagged photons.

doi: 10.1103/PhysRevC.61.035204
Citations: PlumX Metrics


1999DR01      Nucl.Phys. A645, 145 (1999)

D.Drechsel, O.Hanstein, S.S.Kamalov, L.Tiator

A Unitary Isobar Model for Pion Photo- and Electroproduction on the Proton Up to 1 GeV

NUCLEAR REACTIONS 1H(γ, π+), (γ, π0), (e, e'π+), (e, e'π0), E < 1 GeV; calculated σ(θ), asymmetries; deduced resonant, nonresonant contributions.

doi: 10.1016/S0375-9474(98)00572-7
Citations: PlumX Metrics


1998DR05      Phys.Lett. 420B, 248 (1998)

D.Drechsel, G.Krein, O.Hanstein

Dispersion Relations and the Spin Polarizabilities of the Nucleon

NUCLEAR STRUCTURE 1n, 1H; calculated spin polarizabilities; deduced nucleon spin structure features. Forward dispersion calculation.

doi: 10.1016/S0370-2693(97)01536-0
Citations: PlumX Metrics


1998HA20      Nucl.Phys. A632, 561 (1998)

O.Hanstein, D.Drechsel, L.Tiator

Multipole Analysis of Pion Photoproduction Based on Fixed t Dispersion Relations and Unitarity

NUCLEAR REACTIONS 1H(γ, π+), (γ, π0), E=160-450 MeV; 1n(γ, π-), E=190-420 MeV; analyzed σ(θ); deduced multipole amplitudes, threshold behaviour.

doi: 10.1016/S0375-9474(97)00818-X
Citations: PlumX Metrics


1997HA26      Phys.Lett. 399B, 13 (1997)

O.Hanstein, D.Drechsel, L.Tiator

A Dispersion Theoretical Approach to the Threshold Amplitudes of Pion Photoproduction

NUCLEAR REACTIONS 1n(γ, π-), E=159.83-165 MeV; calculated σ(θ); 1H(γ, π0), E=151.69 MeV; 1n(γ, π0), E=151.65 MeV; calculated σ(θ), polarization observables vs θ. Dispersion approach to threshold amplitudes.

doi: 10.1016/S0370-2693(97)00272-4
Citations: PlumX Metrics


1996BL02      Z.Phys. A353, 415 (1996)

K.I.Blomqvist, W.U.Boeglin, R.Bohm, M.Distler, D.Drechsel, R.Edelhoff, J.Friedrich, R.Geiges, O.Hanstein, M.Kahrau, M.Korn, H.Kramer, K.W.Krygier, V.Kunde, M.Kuss, A.Liesenfeld, K.Merle, R.Neuhausen, E.A.J.M.Offermann, Th.Pospischil, M.Potokar, A.Rokavec, A.W.Richter, G.Rosner, P.Sauer, S.Schardt, H.Schmieden, S.Sirca, L.Tiator, B.Vodenik, A.Wagner, Th.Walcher, S.Wolf

Precise Pion Electroproduction in the p(e, e'π+)n Reaction at W = 1125 MeV

NUCLEAR REACTIONS 1H(e, e'π+), E(cm)=1125 MeV; measured missing energy spectra, coincidence, longitudinal σ, asymmetry; deduced longitudinal, transverse structure functions, interference term.

doi: 10.1007/BF01285153
Citations: PlumX Metrics


1996HA34      Phys.Lett. 385B, 45 (1996)

O.Hanstein, D.Drechsel, L.Tiator

The Position and the Residues of the Delta Resonance Pole in Pion Photoproduction

NUCLEAR REACTIONS 1H(γ, π0), E=333 MeV; analyzed parallel, perpendicular σ(θ) ratio. 1H(γ, π0), E ≤ 500 MeV; analyzed electric, magnetic 3, 3 multipoles ratio vs E; deduced Δ resonance pole position, residues. Fixed-t dispersion relations.

doi: 10.1016/0370-2693(96)00855-6
Citations: PlumX Metrics


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