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Search: Author = L.Tiator

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2022SV02      Phys.Rev. C 105, 024614 (2022)

A.Svarc, Y.Wunderlich, L.Tiator

Application of the single-channel, single-energy amplitude and partial-wave analysis method to K+Λ photoproduction

NUCLEAR REACTIONS 1H(γ, K+Λ), E(cm)=1625-2296 MeV; analyzed σ(θ) from CLAS(2006BR06, 2010MC02, 2016PA25) and GRAAL (2007LL01); deduced photoproduction multipoles. Amplitude and partial-wave analysis (AA-PWA).

doi: 10.1103/PhysRevC.105.024614
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2021OS03      Phys.Rev. C 104, 034605 (2021)

H.Osmanovic, M.Hadzimehmedovic, R.Omerovic, J.Stahov, V.Kashevarov, M.Ostrick, L.Tiator, A.Svarc

Single-energy partial-wave analysis for pion photoproduction with fixed-t analyticity

NUCLEAR REACTIONS 1H(polarized γ, π0p), (polarized γ, π+n), 1n(polarized γ, π-p), (polarized γ, π0n), W<2.2 GeV; analyzed experimental world collection of data from several laboratories; deduced helicity amplitudes, polarization observables, electric and magnetic isoscalar and isovector multipoles for different isospins using fixed-t analyticity constraining method for single-energy partial wave analysis (SE PWA) in pion photoproduction. Compiled experimental world data for π0p, π+n and π-p channels from experiments at A2MAMI, CLAS, CBELSA/TAPS

doi: 10.1103/PhysRevC.104.034605
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2020KL02      Eur.Phys.J. A 56, 261 (2020)

E.Klempt, V.Burkert, U.Thoma, L.Tiator, R.Workman, for the Baryon at PDG Collaboration

Λ and Σ Excitations and the Quark Model

doi: 10.1140/epja/s10050-020-00261-2
Citations: PlumX Metrics

2020SV01      Phys.Rev. C 102, 064609 (2020)

A.Svarc, Y.Wunderlich, L.Tiator

Amplitude- and truncated partial-wave analyses combined: A single-channel method for extracting photoproduction multipoles directly from measured data

NUCLEAR REACTIONS 1H(polarized γ, ηp), (polarized γ, π0p), E=710-1470 MeV; analyzed experimental σ(θ, E) data from CBELSA/TAPS (2020, PL-B 803, 135323), A2@MAMI (2016An07), GRAAL (2007Ba67), and A2@MAMI (2010Mc05) collaborations for photoproduction of mesons; deduced photoproduction multipoles for partial waves directly from the experimental data by combining amplitude- and truncated partial-wave analyses.

doi: 10.1103/PhysRevC.102.064609
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2019OS04      Phys.Rev. C 100, 055203 (2019)

H.Osmanovic, M.Hadzimehmedovic, R.Omerovic, J.Stahov, M.Gorchtein, V.Kashevarov, K.Nikonov, M.Ostrick, L.Tiator, A.Svarc

Single-energy partial wave analysis for π0 photoproduction on the proton with fixed-t analyticity imposed

NUCLEAR REACTIONS 1H(γ, π0p), (polarized γ, π0p), E(cm)=1.07-1.9 GeV; analyzed experimental differential σ(E) data from A2@MAMI, DAPHNE, MAMI, CBELSA/TAPS and GRAAL collaborations; deduced electric and magnetic multipoles up to l=3. Fixed-t single energy partial-wave analysis (SE PWA) of π0 photoproduction on the world collection of data.

doi: 10.1103/PhysRevC.100.055203
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2018HI03      Phys.Rev. C 97, 035205 (2018)

M.Hilt, T.Bauer, S.Scherer, L.Tiator

Nucleon-to-Δ transition form factors in chiral effective field theory using the complex-mass scheme

doi: 10.1103/PhysRevC.97.035205
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2018OS01      Phys.Rev. C 97, 015207 (2018)

H.Osmanovic, M.Hadzimehmedovic, R.Omerovic, J.Stahov, V.Kashevarov, K.Nikonov, M.Ostrick, L.Tiator, A.Svarc

Fixed-t analyticity as a constraint in single-energy partial-wave analyses of meson photoproduction reactions

NUCLEAR REACTIONS 1H(γ, pη), E=1487-1850 MeV; analyzed differential σ(E, θ) for polarization observables experimental data at MAMI and GRAAL facilities using analytical constraints from fixed-t dispersion relations in partial wave analysis of η photoproduction data.

doi: 10.1103/PhysRevC.97.015207
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2018SV01      Phys.Rev. C 97, 054611 (2018)

A.Svarc, Y.Wunderlich, H.Osmanovic, M.Hadzimehmedovic, R.Omerovic, J.Stahov, V.Kashevarov, K.Nikonov, M.Ostrick, L.Tiator, R.Workman

Connection between angle-dependent phase ambiguities and the uniqueness of the partial-wave decomposition

doi: 10.1103/PhysRevC.97.054611
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2018SV03      Phys.Rev. C 98, 045206 (2018)

A.Svarc, H.Osmanovic, M.Hadzimehmedovic, R.Omerovic, J.Stahov, M.Gorchteyn, V.Kashevarov, K.Nikonov, M.Ostrick, L.Tiator

Role of angle-dependent phase rotations of reaction amplitudes in η photoproduction on protons

NUCLEAR REACTIONS 1H(γ, η), E(cm)=1.5-2.0 GeV; calculated E0+η and all η photoproduction multipoles using Kent State University, Bonn-Gatchina, Julich-Bonn, and Mainz EtaMAID models, differential σ(θ) using partial wave analysis. Comparison with experimental data from MAMI and GRAAL collaborations.

doi: 10.1103/PhysRevC.98.045206
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2018TI10      Eur.Phys.J. A 54, 210 (2018)

L.Tiator, M.Gorchtein, V.L.Kashevarov, K.Nikonov, M.Ostrick, M.Hadzimehmedovic, R.Omerovic, H.Osmanovic, J.Stahov, A.Svarc

Eta and etaprime photoproduction on the nucleon with the isobar model EtaMAID2018

NUCLEAR REACTIONS 1H(γ, η), (γ, η')1H, E ≈ 1-3 GeV;1n(γ, η)1n, E ≈ 1-3 GeV; calculated σ using EtaMAID2018 code (updated isobar model EtaMAID); compared with published experimental data.

doi: 10.1140/epja/i2018-12643-x
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2017KA44      Phys.Rev. C 96, 035207 (2017)

V.L.Kashevarov, M.Ostrick, L.Tiator

Regge phenomenology in π0 and η photoproduction

NUCLEAR REACTIONS 1H(γ, π0p), (γ, ηp), (polarized γ, π0p), (polarized γ, ηp), E=4-15 GeV; analyzed differential cross sections and polarization observables data from SLAC, GlueX-17, Daresbury, DESY, and CEA using two different Regge model approaches.

doi: 10.1103/PhysRevC.96.035207
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2017TI06      Phys.Rev. C 96, 025210 (2017)

L.Tiator, R.L.Workman, Y.Wunderlich, H.Haberzettl

Amplitude reconstruction from complete electroproduction experiments and truncated partial-wave expansions

doi: 10.1103/PhysRevC.96.025210
Citations: PlumX Metrics

2017WO01      Phys.Rev. C 95, 015206 (2017)

R.L.Workman, L.Tiator, Y.Wunderlich, M.Doring, H.Haberzettl

Amplitude reconstruction from complete photoproduction experiments and truncated partial-wave expansions

doi: 10.1103/PhysRevC.95.015206
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2017WU12      Phys.Rev. C 96, 065202 (2017)

Y.Wunderlich, A.Svarc, R.L.Workman, L.Tiator, R.Beck

Toward an understanding of discrete ambiguities in truncated partial-wave analyses

doi: 10.1103/PhysRevC.96.065202
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2016AN18      Eur.Phys.J. A 52, 284 (2016)

A.V.Anisovich, R.Beck, M.Doring, M.Gottschall, J.Hartmann, V.Kashevarov, E.Klempt, Ulf-G.Meissner, V.Nikonov, M.Ostrick, D.Ronchen, A.Sarantsev, I.Strakovsky, A.Thiel, L.Tiator, U.Thoma, R.Workman, Y.Wunderlich

The impact of new polarization data from Bonn, Mainz and Jefferson Laboratory on γp → πN multipoles

NUCLEAR REACTIONS 1H(γ, π0), (γ, π+), E=147-219, 650-2200 MeV; analyzed published σ(θ), beam asymmetry, double polarization data; calculated σ(θ), beam asymmetry, double polarization using PWA (Partial-Wave Analysis) BnGa code, Juelich-Bonn DCC (Dynamical CC) model, MAID and SAID models; deduced photoproduction multipoles, partial waves real, imaginary parts, parameters.

doi: 10.1140/epja/i2016-16284-9
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2016TI11      Phys.Rev. C 94, 065204 (2016)

L.Tiator, M.Doring, R.L.Workman, M.Hadzimehmedovic, H.Osmanovic, R.Omerovic, J.Stahov, A.Svarc

Baryon transition form factors at the pole

doi: 10.1103/PhysRevC.94.065204
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2014BA26      Phys.Rev. C 90, 015201 (2014)

T.Bauer, S.Scherer, L.Tiator

Electromagnetic transition form factors of the Roper resonance in a phenomenological field theory

doi: 10.1103/PhysRevC.90.015201
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2014SV02      Phys.Rev. C 89, 065208 (2014)

A.Svarc, M.Hadzimehmedovic, H.Osmanovic, J.Stahov, L.Tiator, R.Workman

Pole positions and residues from pion photoproduction using the Laurent-Pietarinen expansion method

doi: 10.1103/PhysRevC.89.065208
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2014WU04      Phys.Rev. C 89, 055203 (2014)

Y.Wunderlich, R.Beck, L.Tiator

The complete-experiment problem of photoproduction of pseudoscalar mesons in a truncated partial-wave analysis

doi: 10.1103/PhysRevC.89.055203
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2013HI02      Phys.Rev. C 87, 045204 (2013)

M.Hilt, S.Scherer, L.Tiator

Threshold π0 photoproduction in relativistic chiral perturbation theory

doi: 10.1103/PhysRevC.87.045204
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2013HI11      Phys.Rev. C 88, 055207 (2013)

M.Hilt, B.C.Lehnhart, S.Scherer, L.Tiator

Pion photo- and electroproduction in relativistic baryon chiral perturbation theory and the chiral MAID interface

doi: 10.1103/PhysRevC.88.055207
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2013SV02      Phys.Rev. C 88, 035206 (2013)

A.Svarc, M.Hadzimehmedovic, H.Osmanovic, J.Stahov, L.Tiator, R.L.Workman

Introducing the Pietarinen expansion method into the single-channel pole extraction problem

doi: 10.1103/PhysRevC.88.035206
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2013WO03      Phys.Rev. C 87, 068201 (2013)

R.L.Workman, L.Tiator, A.Sarantsev

Baryon photo-decay amplitudes at the pole

doi: 10.1103/PhysRevC.87.068201
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2011WO06      Eur.Phys.J. A 47, 143 (2011)

R.L.Workman, M.W.Paris, W.J.Briscoe, L.Tiator, S.Schumann, M.Ostrick, S.S.Kamalov

Model dependence of single-energy fits to pion photoproduction data

NUCLEAR REACTIONS 1H(γ, π0), E=200-1200 MeV; calculated σ, σ(θ) using MAID with different γ multipolarities. Compared with data.

doi: 10.1140/epja/i2011-11143-y
Citations: PlumX Metrics

2010TI08      Phys.Rev. C 82, 055203 (2010)

L.Tiator, S.S.Kamalov, S.Ceci, G.Y.Chen, D.Drechsel, A.Svarc, S.Yang

Singularity structure of the πN scattering amplitude in a meson-exchange model up to energies W≤2.0 GeV

doi: 10.1103/PhysRevC.82.055203
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2009DI10      Eur.Phys.J. A 42, 151 (2009)

R.Di Salvo, A.Fantini, G.Mandaglio, F.Mammoliti, O.Bartalini, V.Bellini, J.P.Bocquet, L.Casano, A.D'Angelo, J.P.Didelez, D.Franco, G.Gervino, F.Ghio, G.Giardina, B.Girolami, A.Giusa, M.Guidal, E.Hourany, R.Kunne, A.Lapik, P.Levi Sandri, A.Lleres, M.Manganaro, D.Moricciani, A.N.Mushkarenkov, V.Nedorezov, C.Randieri, D.Rebreyend, N.Rudnev, G.Russo, C.Schaerf, M.L.Sperduto, M.C.Sutera, A.Turinge, V.Vegna, A.Fix, S.S.Kamalov, L.Tiator

Measurement of Σ beam asymmetry in π0 photoproduction off the neutron in the second and third resonances region

doi: 10.1140/epja/i2009-10870-x
Citations: PlumX Metrics

2008CA12      Eur.Phys.J. A 35, 253 (2008)

S.Capstick, A.Svarc, L.Tiator, J.Gegelia, M.M.Giannini, E.Santopinto, C.Hanhart, S.Scherer, T.-S.H.Lee, T.Sato, N.Suzuki

The physical meaning of scattering matrix singularities in coupled-channel formalisms BRAG 2007 Workshop summary

doi: 10.1140/epja/i2007-10576-1
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2008FI01      Eur.Phys.J. A 36, 61 (2008)

A.Fix, M.Ostrick, L.Tiator

Analysis of angular distributions in γN → π0ηN

doi: 10.1140/epja/i2007-10551-x
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2007CH66      Phys.Rev. C 76, 035206 (2007)

G.Y.Chen, S.S.Kamalov, S.N.Yang, D.Drechsel, L.Tiator

Nucleon resonances in πN scattering up to energies √ s ≤ 2.0 GeV

doi: 10.1103/PhysRevC.76.035206
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2007DR10      Eur.Phys.J. A 34, 69 (2007)

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

Unitary isobar model - MAID2007

doi: 10.1140/epja/i2007-10490-6
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2007FI12      Eur.Phys.J. A 32, 311 (2007)

A.Fix, L.Tiator, M.V.Polyakov

Photoproduction of η -mesons on the deuteron above S11(1535) in the presence of a narrow P11(1670) -resonance

doi: 10.1140/epja/i2007-10385-6
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2007ME24      Phys.Rev.Lett. 99, 132301 (2007)

H.Merkel, P.Achenbach, C.Ayerbe Gayoso, J.C.Bernauer, R.Bohm, D.Bosnar, B.Cheymol, M.O.Distler, L.Doria, H.Fonvieille, J.Friedrich, P.Janssens, M.Makek, U.Muller, L.Nungesser, J.Pochodzalla, M.Potokar, S.Sanchez Majos, B.S.Schlimme, S.Sirca, L.Tiator, Th.Walcher, M.Weinriefer, for the A1 Collaboration

Recoil Polarization and Beam-Recoil Double Polarization Measurement of η Electroproduction on the Proton in the Region of the S11(1535) Resonance

doi: 10.1103/PhysRevLett.99.132301
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2007PA46      Eur.Phys.J. A 34, 387 (2007)

B.Pasquini, D.Drechsel, L.Tiator

Invariant amplitudes for pion electroproduction

doi: 10.1140/epja/i2007-10510-7
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2006EL02      Eur.Phys.J. A 27, 91 (2006)

D.Elsner, A.Sule, P.Barneo, P.Bartsch, D.Baumann, J.Bermuth, R.Bohm, D.Bosnar, M.Ding, M.Distler, D.Drechsel, I.Ewald, J.Friedrich, J.M.Friedrich, S.Grozinger, P.Jennewein, S.Kamalov, F.H.Klein, M.Kohl, K.W.Krygier, H.Merkel, P.Merle, U.Muller, R.Neuhausen, Th.Pospischil, M.Potokar, G.Rosner, H.Schmieden, M.Seimetz, O.Strahle, L.Tiator, Th.Walcher, M.Weis

Measurement of the LT-asymmetry in π0 electroproduction at the energy of the Δ(1232)-resonance

NUCLEAR REACTIONS 1H(polarized e, e'π0), E=855 MeV; measured longitudinal-transverse asymmetry at forward and backward angles; deduced multipole ratios. Comparison with model predictions and other data.

doi: 10.1140/epja/i2005-10212-2
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2006PA15      Eur.Phys.J. A 27, 231 (2006)

B.Pasquini, D.Drechsel, L.Tiator

Dispersion theory and the low-energy constants for neutral-pion photoproduction

doi: 10.1140/epja/i2006-10004-2
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2005PA08      Eur.Phys.J. A 23, 279 (2005)

B.Pasquini, D.Drechsel, L.Tiator

The Fubini-Furlan-Rossetti sum rule revisited

doi: 10.1140/epja/i2004-10114-9
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2004DR12      Ann.Rev.Nucl.Part.Sci. 54, 69 (2004)

D.Drechsel, L.Tiator

The Gerasimov-Drell-Hearn Sum Rule and the Spin Structure of the Nucleon

doi: 10.1146/annurev.nucl.54.070103.181159
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2004GO50      Phys.Rev. C 70, 055202 (2004)

M.Gorchtein, D.Drechsel, M.M.Giannini, E.Santopinto, L.Tiator

Generalized sum rules of the nucleon in the constituent quark model

NUCLEAR STRUCTURE 1n, 1H; calculated sum rules, polarizabilities. Hypercentral constituent quark model.

doi: 10.1103/PhysRevC.70.055202
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2004TI01      Eur.Phys.J. A 19, Supplement 1, 55 (2004)

L.Tiator, D.Drechsel, S.Kamalov, M.M.Giannini, E.Santopinto, A.Vassallo

Electroproduction of nucleon resonances

NUCLEAR REACTIONS 1H(e, π0X), E=high; analyzed data; deduced resonance production associated helicity amplitudes, Q2 dependence. Unitary isobar model.

doi: 10.1140/epjad/s2004-03-009-9
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2004YA15      Nucl.Phys. A737, 248 (2004)

S.N.Yang, F.-Y.Chen, S.S.Kamalov, D.Drechsel, L.Tiator

Threshold π0 photo- and electro-production in a meson-exchange model

NUCLEAR REACTIONS 1H(γ, π0), E ≈ threshold; calculated σ(θ). Meson-exchange dynamical model, comparison with data.

doi: 10.1016/j.nuclphysa.2004.03.085
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2003CH41      Nucl.Phys. A723, 447 (2003)

G.-Y.Chen, S.Kamalov, S.N.Yang, D.Drechsel, L.Tiator

Excitation of S11 resonances in pion scattering and pion photoproduction on the proton

NUCLEAR REACTIONS 1H(π, X), (γ, π), E not given; analyzed data; deduced resonance parameters. Coupled channels dynamical model.

doi: 10.1016/S0375-9474(03)01453-2
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2003CH66      Phys.Rev. C 68, 045202 (2003)

W.-T.Chiang, S.N.Yang, L.Tiator, M.Vanderhaeghen, D.Drechsel

Reggeized model for η and η' photoproduction

NUCLEAR REACTIONS 1H(γ, X), E ≈ 0.8-6 GeV; calculated η and η' production σ, σ(θ). Reggeized model, comparison with data.

doi: 10.1103/PhysRevC.68.045202
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2003TI11      Eur.Phys.J. A 17, 357 (2003)

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

Electromagnetic form factors of the Δ(1232) excitation

NUCLEAR REACTIONS 1H(e, e'π0), E=high; analyzed data; deduced resonance form factors, related features.

doi: 10.1140/epja/i2002-10177-6
Citations: PlumX Metrics

2003YA12      Nucl.Phys. A721, 401c (2003)

S.N.Yang, G.-Y.Chen, S.S.Kamalov, D.Drechsel, L.Tiator

Third and fourth S11 resonances in pion scattering and pion photoproduction

doi: 10.1016/S0375-9474(03)01080-7
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2002BA34      Phys.Rev.Lett. 88, 142001 (2002)

P.Bartsch, D.Baumann, J.Bermuth, R.Bohm, K.Bohinc, D.Bosnar, M.Ding, M.Distler, D.Drechsel, D.Elsner, I.Ewald, J.Friedrich, J.M.Friedrich, S.Grozinger, S.Hedicke, P.Jennewein, M.Kahrau, S.S.Kamalov, F.Klein, K.W.Krygier, A.Liesenfeld, H.Merkel, P.Merle, U.Muller, R.Neuhausen, Th.Pospischil, M.Potokar, G.Rosner, H.Schmieden, M.Seimetz, A.Sule, L.Tiator, A.Wagner, Th.Walcher, M.Weis

Measurement of the Beam-Helicity Asymmetry in the p(e(pol), e'p)π0 Reaction at the Energy of the Δ(1232) Resonance

NUCLEAR REACTIONS 1H(polarized e, e'π0), (polarized e, e'pX), E=854.5 MeV; measured missing mass, beam-helicity asymmetry. Comparison with model predictions.

doi: 10.1103/PhysRevLett.88.142001
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2002CH13      Nucl.Phys. A700, 429 (2002)

W.-T.Chiang, S.N.Yang, L.Tiator, D.Drechsel

An Isobar Model for η Photo- and Electroproduction on the Nucleon

NUCLEAR REACTIONS 1H(γ, X), E=700-1150 MeV; 1H(e, e'X), E=high; calculated η meson production σ(θ), σ, asymmetry. Isobar model, comparisons with data.

doi: 10.1016/S0375-9474(01)01325-2
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2002KA67      Phys.Rev. C 66, 065206 (2002)

S.S.Kamalov, L.Tiator, D.Drechsel, R.A.Arndt, C.Bennhold, I.I.Strakovsky, R.L.Workman

Dispersion relation analysis of neutral pion photoproduction and electroproduction at threshold

NUCLEAR REACTIONS 1H(γ, π0), (e, e'π0), E ≈ threshold; analyzed data; deduced multipole contributions. Dispersion relation analysis.

doi: 10.1103/PhysRevC.66.065206
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2002KO16      Phys.Lett. 530B, 67 (2002)

M.Kohl, P.Bartsch, D.Baumann, J.Bermuth, R.Bohm, K.Bohinc, S.Derber, M.Ding, M.O.Distler, I.Ewald, J.Friedrich, J.M.Friedrich, P.Jennewein, M.Kahrau, S.S.Kamalov, A.Kozlov, K.W.Krygier, M.Kuss, A.Liesenfeld, H.Merkel, P.Merle, U.Muller, R.Neuhausen, Th.Pospischil, M.Potokar, C.Rangacharyulu, A.Richter, D.Rohe, G.Rosner, H.Schmieden, G.Schrieder, M.Seimetz, S.Sirca, T.Suda, L.Tiator, M.Urban, A.Wagner, Th.Walcher, J.Wambach, M.Weis, A.Wirzba

Self Energies of the Pion and the Δ Isobar from the 3He(e, e'π+)3H Reaction

NUCLEAR REACTIONS 3He(e, e'π+), E=855 MeV; measured σ(θ, E), longitudinal and transverse σ(θ); deduced reduction in π+ mass. Chiral Perturbation Theory.

doi: 10.1016/S0370-2693(02)01345-X
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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
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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
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2001KA59      Phys.Lett. 522B, 27 (2001)

S.S.Kamalov, G.-Y.Chen, S.N.Yang, D.Drechsel, L.Tiator

π0 Photo- and Electroproduction at Threshold within a Dynamical Model

NUCLEAR REACTIONS 1H(γ, π0), E=146-160 MeV; 1H(e, e'π0), E ≈ threshold; calculated σ(θ), partial wave amplitudes. Meson-exchange dynamical model, comparisons with data.

doi: 10.1016/S0370-2693(01)01241-2
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2001PO08      Phys.Rev.Lett. 86, 2959 (2001)

Th.Pospischil, P.Bartsch, D.Baumann, J.Bermuth, R.Bohm, K.Bohinc, S.Derber, M.Ding, M.Distler, D.Drechsel, D.Elsner, I.Ewald, J.Friedrich, J.M.Friedrich, R.Geiges, S.Hedicke, P.Jennewein, M.Kahrau, S.S.Kamalov, F.Klein, K.W.Krygier, J.Lac, A.Liesenfeld, J.McIntyre, H.Merkel, P.Merle, U.Muller, R.Neuhausen, M.Potokar, R.D.Ransome, D.Rohe, G.Rosner, H.Schmieden, M.Seimetz, S.Sirca, I.Sick, A.Sule, L.Tiator, A.Wagner, Th.Walcher, G.A.Warren, M.Weis

Measurement of the Recoil Polarization in the p(e(pol), e'p(pol)π0 Reaction at the Δ(1232) Resonance

NUCLEAR REACTIONS 1H(polarized e, e'π0), E=854.4 MeV; measured recoil proton polarization components; deduced Coulomb quadrupole to magnetic dipole ratio. Mainz unitary isobar model.

doi: 10.1103/PhysRevLett.86.2959
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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
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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
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2000DR03      Nucl.Phys. A666-667, 286c (2000)

D.Drechsel, S.S.Kamalov, G.Krein, B.Pasquini, L.Tiator

Polarized Structure Functions of the Nucleon in the Resonance Region

doi: 10.1016/S0375-9474(00)00038-5
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2000SC25      Eur.Phys.J. A 8, 15 (2000)

H.Schmieden, L.Tiator

A Polarization Relation and the Measurement of the Longitudinal Response in Pseudoscalar Meson Electroproduction Off the Nucleon

NUCLEAR REACTIONS 1H(polarized e, e'π0), E not given; analyzed polarization observables; deduced longitudinal response.

doi: 10.1007/s100500070115
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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
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1999DR03      Phys.Rev. D59, 094021 (1999)

D.Drechsel, S.S.Kamalov, G.Krein, L.Tiator

Generalized Gerasimov-Drell-Hearn Integral and the Spin Structure of the Nucleon

NUCLEAR STRUCTURE 1n, 1H; calculated spin structure functions.

doi: 10.1103/PhysRevD.59.094021
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1999DR16      Nucl.Phys. A660, 57 (1999)

D.Drechsel, S.S.Kamalov, G.Krein, B.Pasquini, L.Tiator

Generalized Polarizabilities and Electroexcitation of the Nucleon

NUCLEAR REACTIONS 1n, 1H(polarized e, e'X), E not given; calculated electric, magnetic, spin polarizabilities. Unitary isobar model.

doi: 10.1016/S0375-9474(99)00359-0
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1999DR17      Nucl.Phys. A660, 423 (1999)

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

Medium Effects in Coherent Pion Photo- and Electroproduction on 4He and 12C

NUCLEAR REACTIONS 4He, 12C(γ, π0), E=200-400 MeV; calculated σ(θ); deduced medium effects. DWIA approach.

doi: 10.1016/S0375-9474(99)00412-1
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1999LI41      Phys.Lett. 468B, 20 (1999)

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

A Measurement of the Axial Form Factor of the Nucleon by the p(e, e'π+)n Reaction at W = 1125 MeV

NUCLEAR REACTIONS 1H(e, e'π+), E=405-855 MeV; measured longitudinal, transverse σ(θ); deduced axial mass parameter. Effective Lagrangian model.

doi: 10.1016/S0370-2693(99)01204-6
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1999TI09      Phys.Rev. C60, 035210 (1999)

L.Tiator, D.Drechsel, G.Knochlein, C.Bennhold

Analysis of Resonance Multipoles from Polarization Observables in η Photoproduction

NUCLEAR REACTIONS 1H(γ, X), E=716-1050 MeV; analyzed η production σ(θ), polarization observables; deduced resonance multipole parameters, branching ratios.

doi: 10.1103/PhysRevC.60.035210
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1998DE49      Eur.Phys.J. A 3, 171 (1998)

J.Denschlag, L.Tiator, D.Drechsel

Analysis of Eta Production using a Generalized Lee Model

NUCLEAR REACTIONS 1n, 1H(π, X), (γ, X), E ≈ threshold; calculated pion, η production σ; deduced S11(1535) contribution. Generalized Lee model.

doi: 10.1007/s100500050164
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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
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1998MA20      Nucl.Phys. A631, 765c (1998)

T.Mart, D.Kusno, C.Bennhold, L.Tiator, D.Drechsel

Photoproduction of the Hypertriton

NUCLEAR REACTIONS 3He(γ, X), E=1500-2200 MeV; calculated kaon production σ(θ); deduced hypertriton production features. Fadeev equations.

doi: 10.1016/S0375-9474(98)00106-7
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1998MA59      Nucl.Phys. A640, 235 (1998)

T.Mart, L.Tiator, D.Drechsel, C.Bennhold

Electromagnetic Production of the Hypertriton

NUCLEAR REACTIONS 3He(γ, K+), E=1500-2200 MeV; calculated hypernucleus production σ(θ); deduced Fermi motion effects, other reaction mechanism features. Impulse approximation.

doi: 10.1016/S0375-9474(98)00441-2
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1998PL02      Phys.Lett. 444B, 555 (1998)

R.Plotzke, J.Barth, W.Braun, R.Burgwinkel, J.Ernst, K.H.Glander, S.Goers, J.Hannappel, N.Jopen, H.G.Jungst, H.Kalinowsky, U.Kirch, F.Klein, F.-J.Klein, E.Klempt, A.Kozela, R.Lawall, J.Link, D.Menze, W.Neuerburg, M.Ostrick, M.Paganetti, E.Paul, H.van Pee, I.Schulday, W.J.Schwille, J.Smyrski, U.Thoma, L.Tiator, M.Q.Tran, F.Wehnes, B.Wiegers, F.W.Wieland, J.Wisskirchen

Photoproduction of η'-Mesons with the 4π-Detector SAPHIR

NUCLEAR REACTIONS 1H(γ, X), E=0.9-2.6 GeV; measured η' production σ(θ), σ; deduced resonance contributions. Tagged photons, 4π detector.

doi: 10.1016/S0370-2693(98)01444-0
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1997BL13      Nucl.Phys. A626, 871 (1997)

K.I.Blomqvist, W.U.Boeglin, R.Bohm, M.Distler, R.Edelhoff, J.Friedrich, R.Geiges, M.Kahrau, S.Kamalov, M.Kirchbach, M.Kohl, M.Korn, H.Kramer, K.W.Krygier, V.Kunde, M.Kuss, J.M.Laget, A.Liesenfeld, K.Merle, R.Neuhausen, E.A.J.M.Offermann, Th.Pospischil, M.Potokar, C.Rangacharyulu, A.Richter, A.W.Richter, A.Rokavec, G.Rosner, P.Sauer, St.Schardt, G.Schrieder, T.Suda, L.Tiator, B.Vodenik, A.Wagner, Th.Walcher, St.Wolf

Pion Electroproduction in the 3He(e, e'π+)3H Reaction at Intermediate Energies

NUCLEAR REACTIONS 3He(e, e'π+), E=555-855 MeV; measured transverse, longitudinal σ(θ(π)); deduced transverse, longitudinal structure functions. Standard Born amplitudes for elementary pion production, three-body Fadeev wave functions.

doi: 10.1016/S0375-9474(97)00463-6
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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
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1997KA01      Phys.Rev. C55, 88 (1997)

S.S.Kamalov, L.Tiator, C.Bennhold

Elastic Pion Scattering on the Deuteron in a Multiple Scattering Model

NUCLEAR REACTIONS 2H(π+, π+), E=65-324; calculated σ(θ), tensor analyzing power vs θ, other polarization observables. Multiple scattering model, polarized target.

doi: 10.1103/PhysRevC.55.88
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1997KA02      Phys.Rev. C55, 98 (1997)

S.S.Kamalov, L.Tiator, C.Bennhold

Coherent π0 and η Photoproduction on the Deuteron

NUCLEAR REACTIONS 2H(γ, π0), E=139-151 MeV; calculated reduced σ, σ(θ) vs E, photon asymmetry, vector, tensor analyzing power vs θ. 2H(γ, X), E=675 MeV; calculated η production σ(θ). Polarized target, coupled-channels approach in momentum space.

doi: 10.1103/PhysRevC.55.98
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1996AV02      Yad.Fiz. 59, No 6, 1149 (1996); Phys.Atomic Nuclei 59, 1104 (1996)

T.M.Avdeeva, S.S.Kamalov, L.Tiator

Two-Body Mechanisms in the Reaction 3He(π-, π0)3H

NUCLEAR REACTIONS 3He(π-, π0), E ≈ 150-600 MeV; analyzed σ(θ), σ(θ) vs E, asymmetry data; deduced two-body mechanism crucial role.

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
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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
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1996KA29      Phys.Rev. C54, 1863 (1996)

S.Karataglidis, K.Amos, C.Bennhold, L.Tiator

Large Basis Shell Model Analysis of 14N(γ, π+)14C(g.s) Reaction

NUCLEAR REACTIONS 14N(γ, π+), E=173 MeV; calculated σ(θ); deduced need for improved elementary pion production process. Shell model wave functions.

doi: 10.1103/PhysRevC.54.1863
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1996KI09      Nucl.Phys. A604, 385 (1996)

M.Kirchbach, L.Tiator

On the Coupling of the η Meson to the Nucleon

NUCLEAR REACTIONS 1H(γ, X), E=724-775 MeV; calculated η production σ(θ). Tintor-Bennhold-Kancalov model, pseudoscalar, pseudovector ηN coupling constants from an effective vertex.

doi: 10.1016/0375-9474(96)00140-6
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1996LE11      Nucl.Phys. A603, 345 (1996)

F.X.Lee, L.E.Wright, C.Bennhold, L.Tiator

Quasi-Free η Photoproduction from Nuclei

NUCLEAR REACTIONS 12C, 40Ca(γ, X), E=680-800 MeV; calculated σ(θp, θ(η), E(η)), photon asymmetry. DWIA.

doi: 10.1016/0375-9474(96)80006-D
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1995BE17      Nucl.Phys. A585, 313c (1995)

C.Bennhold, L.Tiator, S.S.Kamalov

The Nucleon Strangeness Content and the (Eta)NN Coupling

NUCLEAR REACTIONS 1H(γ, X), E ≤ 750 MeV; calculated σ(E). 1H(γ, X), E=752 MeV; calculated eta production σ(θ), recoil polarization; deduced (eta NN) coupling related features.

doi: 10.1016/0375-9474(94)00583-9
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1995KA37      Phys.Rev.Lett. 75, 1288 (1995)

S.S.Kamalov, L.Tiator, C.Bennhold

Two-Body Mechanisms in Pion Photoproduction on the Trinucleon

NUCLEAR REACTIONS 3He(γ, π+), E=300, 400, 500 MeV; analyzed σ(θ); deduced two-body mechanisms role.

doi: 10.1103/PhysRevLett.75.1288
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1995KN02      Z.Phys. A352, 327 (1995)

G.Knochlein, D.Drechsel, L.Tiator

Photo- and Electroproduction of Eta Mesons

NUCLEAR REACTIONS 1n, 1H(γ, X), E not given; calculated eta production σ. Electroproduction also included. Effective lagrangian approach.

1995MA32      Phys.Rev. C51, 2534 (1995)

S.K.Matthews, W.J.Briscoe, C.Bennhold, B.L.Berman, R.W.Caress, K.S.Dhuga, S.N.Dragic, S.S.Kamalov, N.J.Nicholas, M.F.Taragin, L.Tiator, S.J.Greene, D.B.Barlow, B.M.K.Nefkens, C.Pillai, J.W.Price, L.D.Isenhower, M.E.Sadler, I.Slaus, I.Supek

Elastic Scattering of Pions from 3H and 3He into the Backward Hemisphere

NUCLEAR REACTIONS 3He, 3H(π+, π+), E=142-256 MeV; measured σ(θ).

doi: 10.1103/PhysRevC.51.2534
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1994TI06      Nucl.Phys. A580, 455 (1994)

L.Tiator, C.Bennhold, S.S.Kamalov

The (Eta)NN Coupling in Eta Photoproduction

NUCLEAR REACTIONS 1H(γ, X), E=708-780 MeV; calculated σ(θ), σ(E) for eta production, polarization observables. Effective lagrangian approach.

doi: 10.1016/0375-9474(94)90909-1
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1993KA06      Phys.Rev. C47, 941 (1993)

S.S.Kamalov, L.Tiator, C.Bennhold

Pion Interaction with the Trinucleon Up to the Eta Production Threshold

NUCLEAR REACTIONS 3He(π+, π+), (π-, π-), E=100-500 MeV; calculated σ(θ), asymmetry vs θ. 2H(π+, π+), E=180-300 MeV; calculated σ(θ). 3He(π-, X), E=555-680 MeV; calculated σ(θ), target asymmetry vs θ for eta production. 3He(π-, π0), E=100-500 MeV; calculated target asymmetry vs θ.

doi: 10.1103/PhysRevC.47.941
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1992BE13      Nucl.Phys. A540, 621 (1992)

C.Bennhold, B.K.Jennings, L.Tiator, S.S.Kamalov

The Asymmetry in π-3He Scattering

NUCLEAR REACTIONS 3He(π+, π+), E=100-260 MeV; analyzed asymmetry data. Optical potential, realistic Faddeev wave functions, polarized target.

doi: 10.1016/0375-9474(92)90176-K
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1992BE41      Phys.Rev. C46, 2456 (1992)

C.Bennhold, L.Tiator, S.S.Kamalov, R.Mach

Electromagnetic and Pion-Nuclear Reactions on 15N

NUCLEAR REACTIONS 15N(π+, π0), E=30, 48 MeV; calculated σ(θ). 15N(γ, π-), E=170 MeV; calculated σ(θ). 15N(e, e), E not given; calculated M1 form factor; deduced higher configurations role. Shell model.

doi: 10.1103/PhysRevC.46.2456
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1992DR01      J.Phys.(London) G18, 449 (1992)

D.Drechsel, L.Tiator

Threshold Pion Photoproduction on Nucleons

NUCLEAR REACTIONS 1H(γ, π+), (γ, π0), 1n(γ, π-), (γ, π0), E ≈ threshold; calculated σ(E). 1H(γ, π+), E=149.1 MeV; calculated σ(θ). Reviewed other reaction data.

doi: 10.1088/0954-3899/18/3/004
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1992KA31      Nucl.Phys. A547, 599 (1992)

S.S.Kamalov, L.Tiator, C.Bennhold

Polarization Observables in Pion Photoproduction on 3He

NUCLEAR REACTIONS 3He(γ, π+), E=200-500 MeV; calculated σ(θ), photon asymmetry, polarization observables vs θ. Three-body Faddeev amplitude, nonlocal coupled-channels framework.

doi: 10.1016/0375-9474(92)90653-2
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1992KO02      Phys.Rev. C45, 230 (1992)

D.Koetsier, K.Amos, L.Tiator, C.Bennhold, L.E.Wright

Photopion Cross Sections and Mass 14 Structures

NUCLEAR REACTIONS 14N(γ, π+), E=173, 200 MeV; calculated σ(θ); deduced core polarization effects role.

doi: 10.1103/PhysRevC.45.230
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1991BE14      Phys.Rev. C43, 2742 (1991)

C.Bennhold, L.Tiator, A.M.Bernstein, S.S.Kamalov

0+ - 0+ Transition in Charged Photopion Reactions

NUCLEAR REACTIONS 14C(γ, π-), E=200 MeV; calculated σ(θ); deduced non-spin-flip term role in 0+ → 0+ transition.

doi: 10.1103/PhysRevC.43.2742
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1991KA32      Few-Body Systems 10, 143 (1991)

S.S.Kamalov, L.Tiator, C.Bennhold

Pion Photoproduction on 3He Including Final-State Interaction

NUCLEAR REACTIONS 3He(π+, π+), (π-, π-), E=50, 100 MeV; calculated σ(θ). 3He(π+, π+), (π-, π-), E=200 MeV; calculated spin-flip, nonspin-flip σ(θ). Faddeev wave functions, full nonlocal DWIA.

doi: 10.1007/BF01076291
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1991LA09      Phys.Rev.Lett. 67, 3356 (1991)

B.Larson, O.Hausser, E.J.Brash, C.Chan, A.Rahav, C.Bennhold, P.P.J.Delheij, R.S.Henderson, B.K.Jennings, A.Mellinger, D.Ottewell, A.Trudel, M.C.Vetterli, D.M.Whittal, S.Ram, L.Tiator, S.S.Kamalov

Asymmetries in Elastic Scattering of 100 MeV π+ from a Polarized 3He Target

NUCLEAR REACTIONS 3He(π+, π+), E=100 MeV; measured σ(θ), analyzing power. Full nonlocal DWIA, realistic three-body Faddeev wave functions. Polarized target.

doi: 10.1103/PhysRevLett.67.3356
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1990BE12      Phys.Lett. 238B, 31 (1990)

C.Bennhold, L.Tiator

E0 Suppression in Pion Photoproduction on 13C

NUCLEAR REACTIONS 13C(γ, π-), E ≈ 160-320 MeV; calculated pion photoproduction σ(θ) vs E; deduced E0 suppression features.

doi: 10.1016/0370-2693(90)92095-Z
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1990BE24      Phys.Rev. C42, 464 (1990)

C.Bennhold, L.Tiator

Comment on ' Wave Function of 14N '

NUCLEAR REACTIONS 14N(γ, π+), E=173, 200 MeV; 14N(e, e'), E not given; calculated σ(θ), M1 form factors. Phenomenological vs shell model wave functions.

doi: 10.1103/PhysRevC.42.464
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1990BE45      Nucl.Phys. A519, 805 (1990)

C.Bennhold, L.Tiator

The E0 Transition in Pion Photoproduction and Radiative Pion Capture on 13C

NUCLEAR REACTIONS 13C(γ, π-), E=160-320 MeV; calculated σ(θ) vs E. 13C(π+, γ), E=115.5 MeV; calculated σ(θ). Nonlocal DWIA, extended shell model space.

NUCLEAR STRUCTURE 13C; calculated magnetic form factor. Extended shell model space.

doi: 10.1016/0375-9474(90)90436-P
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1990BE49      Can.J.Phys. 68, 1270 (1990)

C.Bennhold, L.Tiator, L.E.Wright

Low-Energy Pion Photoproduction from p-Shell Nuclei

NUCLEAR REACTIONS 6Li, 10B(γ, π+), E=200 MeV; 14N(γ, π+), E=173 MeV; calculated σ(θ(π)). Improved DWIA, Feynman diagram based production operator.

doi: 10.1139/p90-183
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1990SO06      Nucl.Phys. A517, 473 (1990)

K.C.So, K.Min, L.Y.Murphy, E.J.Winhold, M.Yamazaki, P.Yergin, R.W.Gothe, B.Schoch, C.Bennhold, L.Tiator, S.J.Hall, J.D.Kellie, I.J.D.MacGregor, R.O.Owens, D.Branford

Spin-Isospin Excitation in 12C(γ, π+)12B(*) using Tagged Photons

NUCLEAR REACTIONS 12C(γ, π+), E=176-182 MeV; measured σ(Eπ, θπ); deduced photopion production σ(θ). 12B deduced levels. Natural target, tagged photon beam.

doi: 10.1016/0375-9474(90)90212-5
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1989TI02      Nucl.Phys. A501, 751 (1989)

L.Tiator, C.Bennhold, R.Neuhausen

Inelastic Electron Scattering and Pion Photoproduction on 12C

NUCLEAR REACTIONS 12C(e, e'), E=350 MeV; measured σ(E, θ); deduced form factors, nuclear structure coefficients, 12C(γ, π+) reaction σ(θ). Non-local DWIA.

doi: 10.1016/0375-9474(89)90159-0
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1988LI23      Nucl.Phys. A485, 580 (1988)

A.Liesenfeld, B.Alberti, D.Eyl, G.Kobschall, A.W.Richter, K.Rohrich, Ch.Schmitt, L.Tiator, V.H.Walther

Electroproduction of Negative Pions on 15N Leading to the Ground State of 15O

NUCLEAR REACTIONS 15N(e, π-), E=170 MeV; measured σ(E(e), θ(π), E(π)). Virtual photon theory.

doi: 10.1016/0375-9474(88)90554-4
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1988TI06      Nucl.Phys. A485, 565 (1988)

L.Tiator, J.Vesper, D.Drechsel, N.Ohtsuka, L.E.Wright

Photoproduction of π+ from 14N in the Δ(1232) Region

NUCLEAR REACTIONS 14N(γ, π+), E=200-400 MeV; calculated σ(θ); deduced reaction mechanism. Extended isobar doorway model.

doi: 10.1016/0375-9474(88)90553-2
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1986KI08      Phys.Lett. 172B, 287 (1986)

Y.E.Kim, M.Krell, L.Tiator

Charge-Symmetry Violation in π+ and π- Elastic Scattering from Tritium and 3He

NUCLEAR REACTIONS 3He(π+, π+), (π-, π-), E=140, 180, 220 MeV; analyzed σ(θ); deduced potential parameters, charge symmetry violation test conditions. Optical model.

doi: 10.1016/0370-2693(86)90253-4
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