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NSR database version of May 24, 2024.

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2022LY02      Phys.Rev. C 105, 014327 (2022)

N.Lyutorovich, V.Tselyaev, J.Speth, G.Martinez-Pinedo, K.Langanke, P.-G.Reinhard

Self-consistent description of high-spin states in doubly magic 208Pb

NUCLEAR STRUCTURE 208Pb; calculated natural and unnatural high-spin yrast levels of spins from 13-30, energy difference for the first two excited states in each angular momentum channel, discrete RPA (DRPA) results for the energies of the high-spin yrast states, energies and structures of 2p2h, 1p1h+phonon, and two-phonon energies of high spins. Self-consistent phonon-coupling model based on Skyrme functionals, with renormalized time-blocking approximation which evolves coherent one-particle-one-hole states of the random-phase approximation (RPA) to more complex configurations beyond RPA. Comparison with experimental data.

doi: 10.1103/PhysRevC.105.014327
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2020SP06      Phys.Rev. C 102, 054332 (2020)

J.Speth, P.-G.Reinhard, V.Tselyaev, N.Lyutorovich

Generalized Skyrme random-phase approximation for nuclear resonances: Different trends for electric and magnetic modes

NUCLEAR STRUCTURE 208Pb; calculated collective low- and high-lying resonances, GDR, GMR, GQR, energies of M1 excitations, energies of the first excited 3-, 5-, and 2+ states. Self-consistent Skyrme energy-density functional (EDF) approach using random phase approximation (RPA) and particle-hole plus phonon-coupling model, termed as time-blocking approximation (TBA).

doi: 10.1103/PhysRevC.102.054332
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2020TS02      Phys.Rev. C 102, 064319 (2020)

V.Tselyaev, N.Lyutorovich, J.Speth, P.-G.Reinhard

M1 resonance in 208Pb within the self-consistent phonon-coupling model

NUCLEAR STRUCTURE 208Pb; calculated energy and B(M1) of the isoscalar 1+ state, mean energy and the summed strength B(M1) of the isovector M1 resonance, energies and B(Eλ) values for first 2+, 3-, 4+, 5- and 6+ states, strength distributions of M1 excitations in (γ, γ'), and partial M1 cross sections in (p, p'). Extended self-consistent model including the particle-phonon coupling within the renormalized time blocking approximation (RenTBA) with several modified Skyrme energy density functionals (EDFs), and random-phase approximation (RPA) calculations. Comparison with experimental data.

doi: 10.1103/PhysRevC.102.064319
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2019TS05      Phys.Rev. C 99, 064329 (2019)

V.Tselyaev, N.Lyutorovich, J.Speth, P.-G.Reinhard, D.Smirnov

Low-energy M1 excitations in 208Pb and the spin channel of the Skyrme energy-density functional

NUCLEAR STRUCTURE 208Pb; calculated levels, B(M1), M1 strength function, and one-particle one-hole energies, rms radii using RPA with various Skyrme energy-density functional parametrizations. Comparison with experimental values, and discussed impact of spin-dependent part of Skyrme energy-density functional on M1 modes.

doi: 10.1103/PhysRevC.99.064329
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2018LY06      Phys.Rev. C 98, 054304 (2018)

N.Lyutorovich, V.Tselyaev, J.Speth, P.-G.Reinhard

Excitation spectra of exotic nuclei in a self-consistent phonon-coupling model

NUCLEAR STRUCTURE 48,56,68,78Ni, 100,132,140,176Sn; calculated mean energies and widths of giant resonances: giant monopole (GMR), giant dipole (GDR), and giant quadrupole (GQR), low-lying electric dipole strength in pygmy dipole resonances (PDR), isoscalar E0, E1 and E2 strength functions, isoscalar photoabsorption σ, isovector E1 strength function of 56Ni, isovector photoabsorption σ of 56,68Ni and 100,140Sn, and dependence of photoabsorption σ on single-particle basis size using random phase approximation (RPA) with and without self-consistent time-blocking approximation and Skyrme-Hartree-Fock nuclear force. Comparison with experimental data.

doi: 10.1103/PhysRevC.98.054304
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2018TS02      Phys.Rev. C 97, 044308 (2018)

V.Tselyaev, N.Lyutorovich, J.Speth, P.-G.Reinhard

Self-consistency in the phonon space of the particle-phonon coupling model

NUCLEAR STRUCTURE 16O, 40Ca, 208Pb; calculated energies and B(E3) of first 3- states, mean energies and σ of giant dipole resonance (GDR). Particle-phonon coupling model with non-linear form of time blocking approximation (TBA), called as configuration blocking approximation (CBA). Comparison with experimental data, and with standard TBA approximation.

doi: 10.1103/PhysRevC.97.044308
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2017SP01      Int.J.Mod.Phys. E26, 1740025 (2017)

J.Speth, N.Lyutorovich

Many-body Green functions in nuclear physics

NUCLEAR STRUCTURE 40Ca, 153Eu, 152Sm, 188Os; calculated energy levels, J, π. Comparison with available data.

doi: 10.1142/S0218301317400250
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2017TS06      Phys.Rev. C 96, 024312 (2017)

V.Tselyaev, N.Lyutorovich, J.Speth, P.-G.Reinhard

Optimizing phonon space in the phonon-coupling model

NUCLEAR STRUCTURE 16O, 40,48Ca, 56Ni, 132Sn, 208Pb; calculated mean energies of giant resonances (GRs), energies, B(E2) and B(E3) values of low-lying 2+ and 3- states. Phonon-coupling model using the time-blocking approximation (TBA) code with three different Skyrme parametrizations. Comparison with experimental data.

doi: 10.1103/PhysRevC.96.024312
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2016TS01      Phys.Rev. C 94, 034306 (2016)

V.Tselyaev, N.Lyutorovich, J.Speth, S.Krewald, P.-G.Reinhard

Application of an extended random-phase approximation to giant resonances in light-, medium-, and heavy-mass nuclei

NUCLEAR REACTIONS 16O, 40,48Ca, 132Sn, 208Pb(γ, X), E*=0-40 MeV; calculated photoabsorption cross sections, fractions of EWSR, energies, widths and other characteristics of giant-monopole resonances (GMR), giant-dipole resonances (GDR), and giant-quadrupole resonances (GQR) using extended random phase approximation (RPA) with time-blocking approximation (TBA). Comparison with experimental data.

doi: 10.1103/PhysRevC.94.034306
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2014SA54      Phys.Atomic Nuclei 77, 1033 (2014)

E.E.Saperstein, O.I.Achakovskiy, S.P.Kamerdzhiev, S.Krewald, J.Speth, S.V.Tolokonnikov

Phonon coupling effects in magnetic moments of magic and semimagic nuclei

NUCLEAR STRUCTURE 188,190,192,194,196,198,200,202,204,206,207,208,209Pb, 187,189,191,193,195,197,199,201,203,205,207Tl, 209Bi, 100,102,104,106,108,110,112,114,116,118,120,122,124,126,128,130,132,134Sn, 105,107,109,111,113,115,117,119,121,123,125,127In, 115,117,119,121,123,125,127,129,131,133Sb; calculated energy levels, J, π, magnetic moments, B(E2). Comparison with experimental data.

doi: 10.1134/S1063778814080122
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2014SP02      Nucl.Phys. A928, 17 (2014)

J.Speth, S.Krewald, F.Grummer, P.-G.Reinhard, N.Lyutorovich, V.Tselyaev

Landau-Migdal vs. Skyrme

NUCLEAR STRUCTURE 208Pb; calculated E0, E1, E2 excitation γ strength functions using RPA with approximation for Landau-Migdal interaction and usin g full Skyrme interaction.

doi: 10.1016/j.nuclphysa.2014.03.023
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2013SA42      Europhys.Lett. 103, 42001 (2013)

E.E.Saperstein, S.Kamerdzhiev, S.Krewald, J.Speth, S.V.Tolokonnikov

A model for phonon coupling contributions to electromagnetic moments of odd spherical nuclei

NUCLEAR STRUCTURE 187,188,189,190,191,192,193,194,195,196,197,198,199,200,201,202,203,204,205,206,207,208,209,210,211Tl, 99,100,101,102,103,104,105,106,107,108,109,110,111,112,113,114,115,116,117,118,119,120,121,122,123,124,125,126,127,128,129,130,131In, 101,102,103,104,105,106,107,108,109,110,111,112,113,114,115,116,117,118,119,120,121,122,123,124,125,126,127,128,129,130,131,132,133Sb; calculated magnetic moments. Theory of Finite Fermi Systems (TFFS), comparison with experimental data.

doi: 10.1209/0295-5075/103/42001
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2012LY02      Phys.Rev.Lett. 109, 092502 (2012)

N.Lyutorovich, V.I.Tselyaev, J.Speth, S.Krewald, F.Grummer, P.-G.Reinhard

Self-Consistent Calculations of the Electric Giant Dipole Resonances in Light and Heavy Nuclei

NUCLEAR REACTIONS 16O, 40Ca, 208Pb(γ, X), E<40 MeV; calculated σ, electric giant dipole resonances. Skyrme interaction, comparison with available data.

doi: 10.1103/PhysRevLett.109.092502
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2010SP06      Nucl.Phys. A844, 30c (2010)

J.Speth, S.Drozdz, F.Grummer

Complex systems: from nuclear physics to financial markets

doi: 10.1016/j.nuclphysa.2010.05.010
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2009KR04      Int.J.Mod.Phys. E18, 1425 (2009)

S.Krewald, J.Speth

PYGMY dipole resonances

doi: 10.1142/S0218301309013750
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2009TS03      Phys.Rev. C 79, 034309 (2009)

V.Tselyaev, J.Speth, S.Krewald, E.Litvinova, S.Kamerdzhiev, N.Lyutorovich, A.Avdeenkov, F.Grummer

Description of the giant monopole resonance in the even-A 112-124Sn isotopes within a microscopic model including quasiparticle-phonon coupling

NUCLEAR STRUCTURE 90Zr, 110,112,114,116,118,120,122,124,132Sn, 144Sm, 208Pb; calculated strength distribution, mean energies and widths of isoscalar giant-monopole resonances (ISGMR) using two microscopic models: quasiparticle random phase approximation (QRPA) and quasiparticle time blocking approximation (QTBA) with self-consistence scheme based on Hartree-Fock+Bardeen-Cooper-Schrieffer (HF+BCS) approximation and Skyrme energy functional. Comparison with experimental data.

doi: 10.1103/PhysRevC.79.034309
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2008LY03      Eur.Phys.J. A 37, 381 (2008)

N.Lyutorovich, J.Speth, A.Avdeenkov, F.Grummer, S.Kamerdzhiev, S.Krewald, V.I.Tselyaev

Self-consistent calculations within the Green's function method including particle-phonon coupling and the single-particle continuum

NUCLEAR STRUCTURE 132Sn, 208Pb; calculated levels, J, π, B(E1), GDR, photoabsorption σ, isoscalar/isovector quadrupole strength distributions using a quasiparticle time blocking approximation. Comparison with RPA and data.

doi: 10.1140/epja/i2008-10638-x
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2007TE05      Phys.Lett. B 647, 104 (2007)

G.Tertychny, V.Tselyaev, S.Kamerdzhiev, F.Grummer, S.Krewald, J.Speth, A.Avdeenkov, E.Litvinova

Microscopic description of the low lying and high lying electric dipole strength in stable Ca isotopes

NUCLEAR STRUCTURE 40,44,48Ca; calculated B(E1), electric dipole strength distribution, GDR. Extended theory of finite Fermi systems.

doi: 10.1016/j.physletb.2007.01.069
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2007TE08      Nucl.Phys. A788, 159c (2007)

G.Tertychny, V.Tselyaev, S.Kamerdzhiev, F.Grummer, S.Krewald, J.Speth, E.Litvinova, A.Avdeenkov

Pygmy dipole resonance in stable Ca isotopes

NUCLEAR STRUCTURE 40,44,48Ca; calculated B(E1), electric dipole strength distribution, transition densities. Extended theory of finite Fermi systems using RPA. Comparison with data.

doi: 10.1016/j.nuclphysa.2007.01.077
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2007TS01      Phys.Rev. C 75, 014315 (2007)

V.Tselyaev, J.Speth, F.Grummer, S.Krewald, A.Avdeenkov, E.Litvinova, G.Tertychny

Extended theory of finite Fermi systems: Application to the collective and noncollective E1 strength in 208Pb

NUCLEAR STRUCTURE 208Pb; calculated levels, J, π, E1 strength distribution, transition densities. Extended theory of finite Fermi systems.

doi: 10.1103/PhysRevC.75.014315
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2006GR12      J.Phys.(London) G32, R193 (2006)

F.Grummer, J.Speth

Landau-Migdal theory of interacting Fermi systems: a framework for effective theories in nuclear structure physics

NUCLEAR STRUCTURE 48Ca, 132Sn, 208Pb; calculated photoabsorption σ. Extended theory of finite Fermi systems.

NUCLEAR REACTIONS 58Ni(α, α'), E=240 MeV; calculated σ(E, θ), resonance contributions. Extended theory of finite Fermi systems.

doi: 10.1088/0954-3899/32/7/R01
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2004GA14      Phys.Rev. C 69, 034006 (2004)

A.Gasparyan, J.Haidenbauer, C.Hanhart, J.Speth

How to extract the ΛN scattering length from production reactions

NUCLEAR REACTIONS 1H(p, K+X), E=2.3 GeV; analyzed missing mass spectrum; deduced hyperon-nucleon scattering length.

doi: 10.1103/PhysRevC.69.034006
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2004HA62      Fizika(Zagreb) B 13, 37 (2004)

J.Haidenbauer, V.Baru, A.M.Gasparyan, C.Hanhart, J.Speth

Eta meson production in NN collisions

NUCLEAR REACTIONS 1H(p, pX), (n, nX), E ≈ threshold; calculated η meson production σ, invariant mass spectra. Comparisons with data.


2004KA11      Phys.Rep. 393, 1 (2004)

S.Kamerdzhiev, J.Speth, G.Tertychny

Extended theory of finite Fermi systems: collective vibrations in closed shell nuclei

doi: 10.1016/j.physrep.2003.11.001
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2003BA14      Phys.Rev. C 67, 024002 (2003)

V.Baru, A.M.Gasparyan, J.Haidenbauer, C.Hanhart, A.E.Kudryavtsev, J.Speth

Production of η mesons in nucleon-nucleon collisions

NUCLEAR REACTIONS 1H(p, pX), (n, nX), (n, dX), E ≈ threshold; calculated η production σ. Microscopic calculation, comparisons with data.

doi: 10.1103/PhysRevC.67.024002
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2003BA95      Nucl.Phys. A721, 727c (2003)

V.Baru, A.M.Gasparyan, J.Haidenbauer, C.Hanhart, A.E.Kudryavtsev, J.Speth

Production of η mesons in nucleon-nucleon collisions

NUCLEAR REACTIONS 1n, 1H(p, pX), 1n(p, dX), E ≈ threshold; calculated η meson production σ. Comparisons with data.

doi: 10.1016/S0375-9474(03)01167-9
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2003GA35      Phys.Rev. C 68, 045207 (2003)

A.M.Gasparyan, J.Haidenbauer, C.Hanhart, J.Speth

Pion-nucleon scattering in a meson-exchange model

NUCLEAR REACTIONS 1n, 1H(π, π), E(cm)=1.1-1.9 GeV; calculated phase shifts, inelasticities. 1H(π-, nX), E(cm)=1400-1900 MeV; calculated η meson production σ, σ(θ). Meson exchange model, comparisons with data.

doi: 10.1103/PhysRevC.68.045207
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2003KU27      Yad.Fiz. 66, 1994 (2003); Phys.Atomic Nuclei 66, 1946 (2003)

A.E.Kudryavtsev, V.E.Tarasov, J.Haidenbauer, C.Hanhart, J.Speth

Angular Asymmetries in the Reactions p(pol)p → dπ+η and p(pol)n → dπ0η and a0-f0 Mixing

NUCLEAR REACTIONS 1H(polarized p, dπ+X), E=2.65 GeV; 1n(polarized p, dπ0X), E not given; calculated η-meson production associated σ(θ), polarization observables, nonresonant contributions.

doi: 10.1134/1.1619506
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2003NA28      Phys.Rev. C 68, 045201 (2003)

K.Nakayama, J.Haidenbauer, C.Hanhart, J.Speth

Analysis of the reaction pp → ppη near threshold

NUCLEAR REACTIONS 1H(p, p'X), E ≈ threshold; analyzed η meson production associated invariant mass spectra, σ, σ(θ), Ay(θ); deduced partial wave amplitudes, resonance features.

doi: 10.1103/PhysRevC.68.045201
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2003SA56      Eur.Phys.J. A 18, 197 (2003)

F.P.Sassen, S.Krewald, J.Speth

t-dependence of pion production in π-p → π0π0n

NUCLEAR REACTIONS 1H(π-, 2π0), E not given; analyzed data; deduced form factors, possible role of kaon-antikaon molecular state.

doi: 10.1140/epja/i2002-10306-3
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2003SC37      Eur.Phys.J. A 18, 421 (2003)

S.Schneider, A.Sibirtsev, Ch.Elster, J.Haidenbauer, S.Krewald, J.Speth

ηN final-state interaction in incoherent photoproduction of η-mesons from the deuteron

NUCLEAR REACTIONS 2H(γ, X), E=630-681 MeV; calculated η-meson production σ, σ(θ), final-state interaction effects.

doi: 10.1140/epja/i2002-10250-2
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2003SP03      Nucl.Phys. A721, 679c (2003)

J.Speth, F.P.Sassen, S.Krewald

Meson-Production and the Structure of Scalar Mesons

doi: 10.1016/S0375-9474(03)01151-5
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2003SZ03      Nucl.Phys. A728, 182 (2003)

A.Szczurek, J.Speth

Perturbative QCD versus pion exchange and hadronic FSI effects in the γγ → π+π- reaction

doi: 10.1016/j.nuclphysa.2003.08.018
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2003SZ06      Eur.Phys.J. A 18, 445 (2003)

A.Szczurek, J.Speth

Perturbative versus nonperturbative effects at medium energies in the γγ → π+π- reaction

doi: 10.1140/epja/i2002-10256-8
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2002BU01      Phys.Rev. C65, 014603 (2002)

M.Buscher, B.L.Ioffe, V.Koptev, M.Nekipelov, A.Sibirtsev, K.Sistemich, J.Speth, H.Stroher

Phenomenological Analysis of K+-Meson Production in Proton-Nucleus Collisions

NUCLEAR REACTIONS C, Na, F, Pb(p, K+X), E=0.8-2.9 GeV; analyzed kaon production σ, σ(θ).

doi: 10.1103/PhysRevC.65.014603
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2002CA45      Phys.Rev. C66, 044006 (2002)

G.Caia, J.W.Durso, Ch.Elster, J.Haidenbauer, A.Sibirtsev, J.Speth

Pseudovector vs pseudoscalar coupling in one-boson exchange NN potentials

NUCLEAR STRUCTURE 2H; calculated binding energy, quadrupole moment, related quantities. Several models compared, comparison with data.

doi: 10.1103/PhysRevC.66.044006
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2002KU29      Phys.Rev. C66, 015207 (2002)

A.E.Kudryavtsev, V.E.Tarasov, J.Haidenbauer, C.Hanhart, J.Speth

Aspects of a0-f0 Mixing in the Reaction p(pol)n → da0

NUCLEAR REACTIONS 1n(polarized p, dX), E at 2645 MeV/c; calculated scalar meson production associated invariant mass spectra, role of mixing effects.

doi: 10.1103/PhysRevC.66.015207
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2002NA11      Phys.Rev. C65, 045210 (2002)

K.Nakayama, J.Speth, T.-S.H.Lee

η Meson Production in NN Collisions

NUCLEAR REACTIONS 1H(p, X), (n, X), E ≈ threshold; calculated η meson production σ, σ(θ), Ay(θ). Relativistic meson exchange model, comparison with data.

doi: 10.1103/PhysRevC.65.045210
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2002SI08      Phys.Rev. C65, 044007 (2002)

A.Sibirtsev, S.Schneider, Ch.Elster, J.Haidenbauer, S.Krewald, J.Speth

ηN Final State Interaction in Incoherent Photoproduction of η Mesons from the Deuteron Near Threshold

NUCLEAR REACTIONS 2H(γ, X), E=620-800 MeV; calculated η meson production σ; deduced role of final state interactions. Comparison with data.

doi: 10.1103/PhysRevC.65.044007
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2002SI14      Phys.Rev. C65, 067002 (2002)

A.Sibirtsev, S.Schneider, Ch.Elster, J.Haidenbauer, S.Krewald, J.Speth

Incoherent η Photoproduction from the Deuteron Near Threshold

NUCLEAR REACTIONS 2H(γ, npX), E=620-680 MeV; calculated η meson photoproduction σ, σ(θ). Impulse approximation plus corrections, comparison with data.

doi: 10.1103/PhysRevC.65.067002
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2002SZ07      Phys.Rev. C 66, 055206 (2002)

A.Szczurek, N.N.Nikolaev, J.Speth

From soft to hard regime in elastic pion-pion scattering above resonances

doi: 10.1103/PhysRevC.66.055206
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2001BA38      Yad.Fiz. 64, No 3, 633 (2001); Phys.Atomic Nuclei 64, 579 (2001)

V.V.Baru, A.M.Gasparian, J.Haidenbauer, A.E.Kudryavtsev, J.Speth

On the Migdal-Watson Approach to FSI Effects in Meson Production in NN Collisions

NUCLEAR REACTIONS 1H(p, pX), E ≈ threshold; calculated meson production associated final state interaction form factors. Migdal-Watson approach.

doi: 10.1134/1.1358484
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2001GA30      Nucl.Phys. A684, 397c (2001)

A.M.Gasparian, J.Haidenbauer, C.Hanhart, L.Kondratyuk, J.Speth

Near Threshold Λ and Σ Production in pp Collisions

NUCLEAR REACTIONS 1H(p, K+X), E ≈ threshold; calculated Λ and Σ hyperon production σ. Comparison with data.

doi: 10.1016/S0375-9474(01)00407-9
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2001NA03      Phys.Rev. C63, 015201 (2001)

K.Nakayama, J.Haidenbauer, J.Speth

The Reactions pn → dω and pn → dφ Near Threshold

NUCLEAR REACTIONS 1H(n, dX), E ≈ threshold; calculated ω, φ meson production σ, σ(θ). Relativistic meson-exchange model.

doi: 10.1103/PhysRevC.63.015201
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2001NA25      Nucl.Phys. A689, 402c (2001)

K.Nakayama, J.Haidenbauer, J.Speth

The Reactions pn → dω and pn → d0 and the Role of the OZI Rule

NUCLEAR REACTIONS 1H(n, X), E ≈ threshold; calculated φ, ω meson production σ. Relativistic meson-exchange model.

doi: 10.1016/S0375-9474(01)00865-X
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2001SI28      Phys.Rev. C64, 024006 (2001)

A.Sibirtsev, Ch.Elster, J.Haidenbauer, J.Speth

Incoherent Photoproduction of η Mesons from the Deuteron Near Threshold

NUCLEAR REACTIONS 1H(γ, X), E =700-800 MeV; 2H(γ, npX), E=620-800 MeV; calculated η meson production σ, σ(E); deduced final state interaction effects, other reaction mechanism features. Comparison with data.

doi: 10.1103/PhysRevC.64.024006
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2001SP01      Nucl.Phys. A680, 328c (2001)

J.Speth, O.Krehl, S.Krewald, C.Hanhart

The Structure of the Roper Resonance

doi: 10.1016/S0375-9474(00)00438-3
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2001SZ01      Phys.Lett. 500B, 254 (2001)

A.Szczurek, N.N.Nikolaev, W.Schafer, J.Speth

Mapping the Proton Unintegrated Gluon Distribution in Dijets Correlations in Real and Virtual Photoproduction at HERA

NUCLEAR REACTIONS 1H(γ, X), E=high; calculated dijet production σ(φ), azimuthal correlations vs Bjorken-x, Q2, transverse momenta, dependence on proton gluon distribution.

doi: 10.1016/S0370-2693(01)00084-3
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2001SZ04      Phys.Rev. D63, 114005 (2001)

A.Szczurek, V.Uleshchenko, J.Speth

(d-bar)-(u-bar) Asymmetry and Semi-Inclusive Production of Pions in Deep Inelastic Scattering

NUCLEAR REACTIONS 1H(γ, X), E=high; analyzed pion production data; deduced implications for quark asymmetry determination.

doi: 10.1103/PhysRevD.63.114005
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2001WA13      Nucl.Phys. A684, 429c (2001)

Z.S.Wang, S.Krewald, J.Speth

A Meson-Theoretical Explanation of the f0(980) Production Puzzle in the Reaction π-p → π0π0n

doi: 10.1016/S0375-9474(01)00448-1
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2001WA22      Yad.Fiz. 64, No 4, 750 (2001); Phys.Atomic Nuclei 64, 691 (2001)

Z.S.Wang, S.Krewald, J.Speth

A Meson-Theoretical Explanation of the f0 (980)-Production Puzzle in the Reaction π-p → π0π0n

NUCLEAR REACTIONS 1H(π-, 2π0), E at 18.3, 38 GeV/c; analyzed partial wave amplitudes; deduced meson dynamics effects.

doi: 10.1134/1.1368225
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2000BA92      Acta Phys.Pol. B31, 2127 (2000)

V.Baru, A.M.Gasparian, J.Haidenbauer, A.E.Kudryavtsev, J.Speth

FSI Effects in Meson Production in NN Collisions


2000BE23      Nucl.Phys. A673, 241 (2000)

O.Benhar, N.N.Nikolaev, J.Speth, A.A.Usmani, B.G.Zakharov

Final State Interactions in 4He(e, e'p)3H at Large Proton Energy

NUCLEAR REACTIONS 4He(e, e'p), E not given; calculated missing momentum distributions for large proton energy; deduced final state interaction effects, role of color transparency. Eikonal approximation.

doi: 10.1016/S0375-9474(00)00126-3
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2000GA21      Phys.Lett. 480B, 273 (2000)

A.M.Gasparian, J.Haidenbauer, C.Hanhart, L.Kondratyuk, J.Speth

The Reactions pp → pΛK+ and pp → pΣ0K+ Near Their Thresholds

NUCLEAR REACTIONS 1H(p, K+X), E ≈ threshold; calculated hyperon associated production σ; deduced reaction mechanism features. Comparisons with data.

doi: 10.1016/S0370-2693(00)00412-3
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2000GR04      Phys.Lett. 475B, 9 (2000)

V.Yu.Grishina, L.A.Kondratyuk, M.Buscher, J.Haidenbauer, C.Hanhart, J.Speth

η- and η'-Meson Production in the Reaction pn → dM Near Threshold

NUCLEAR REACTIONS 1n(p, dX), E ≈ threshold; calculated η, η' production associated σ; deduced meson exchange contributions. Two-step model, comparisons with data.

doi: 10.1016/S0370-2693(00)00048-4
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2000HA21      Nucl.Phys. A663-664, 461c (2000)

C.Hanhart, J.Haidenbauer, O.Krehl, J.Speth

Polarization Phenomena in a Dynamical Model of NN → NNπ

NUCLEAR REACTIONS 1H(p, pπ0), (p, pπ+), E not given; calculated spin correlation parameters. Comparisons with data.

doi: 10.1016/S0375-9474(99)00631-4
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2000HA22      Nucl.Phys. A663-664, 549c (2000)

J.Haidenbauer, W.Melnitchouk, J.Speth

Meson-Exchange Model for the YN Interaction

doi: 10.1016/S0375-9474(99)00653-3
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2000HA30      Phys.Rev. C61, 064008 (2000)

C.Hanhart, J.Haidenbauer, O.Krehl, J.Speth

Polarization Phenomena in the Reaction NN → NNπ Near Threshold

NUCLEAR REACTIONS 1H(p, pπ0), (p, nπ+), (p, π+), E ≈ threshold; calculated spin correlation parameters; deduced resonant and nonresonant contributions. Comparisons with data.

doi: 10.1103/PhysRevC.61.064008
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2000KA22      Eur.Phys.J. A 7, 483 (2000)

S.Kamerdzhiev, J.Speth, G.Tertychny

Microscopic Analysis of the Breathing Mode in 40Ca and 58Ni

NUCLEAR REACTIONS 40Ca, 58Ni(α, α'), E=240 MeV; analyzed isoscalar monopole resonance transition densities. Microscopic model.

doi: 10.1007/s100500050421
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2000KR11      Phys.Rev. C62, 025207 (2000)

O.Krehl, C.Hanhart, S.Krewald, J.Speth

What is the Structure of the Roper Resonance ?

doi: 10.1103/PhysRevC.62.025207
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2000NA02      Phys.Rev. C61, 024001 (2000)

K.Nakayama, H.F.Arellano, J.W.Durso, J.Speth

η' Meson Production in Proton-Proton Collisions

NUCLEAR REACTIONS 1H(p, pX), E ≈ threshold; calculated pion, η-, η'-meson production σ; deduced contributions. Relativistic meson exchange model. Comparisons with data.

doi: 10.1103/PhysRevC.61.024001
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2000NI01      Phys.Lett. 473B, 157 (2000)

N.N.Nikolaev, J.Speth, V.R.Zoller

The Color Dipole BFKL-Regge Expansion: From DIS on protons to pions to rise of hadronic cross sections

NUCLEAR REACTIONS 1H(p, X), (p-bar, X), (γ, X), (π+, X), (π-, X), E=high; calculated total σ; deduced small-x structure function contributions.

doi: 10.1016/S0370-2693(99)01474-4
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2000NI09      Yad.Fiz. 63, No 8, 1543 (2000); Phys.Atomic Nuclei 63, 1463 (2000)

N.N.Nikolaev, J.Speth, B.G.Zakharov

Nuclear-Medium Modification of the ρ0(1S) and ρ'(2S) Mesons in Coherent Photo- and Electroproduction: Coupled-channel analysis

NUCLEAR REACTIONS 9Be, 56Fe, 207Pb(γ, X), E=2, 5, 10, 20 GeV; calculated ρ meson associated dilepton mass spectra for real and virtual photoproduction; deduced nuclear medium modification features.

doi: 10.1134/1.1307468
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2000SC40      Acta Phys.Pol. B31, 2511 (2000)

W.Schafer, N.Nikolaev, J.Speth, A.Szczurek

Inclusive Production of Forward Neutrons and the Pionic Content of the Nucleon

NUCLEAR REACTIONS 1H(p, nX), E(cm)=30-63 GeV; calculated σ(E, θ), pion exchange contributions. Comparison with data.


1999BB14      Eur.Phys.J. A 6, 445 (1999)

V.Baru, J.Haidenbauer, C.Hanhart, A.Kudryavtsev, P.Moskal, J.Speth

On Production of η' Mesons in pp Collisions Close to Threshold

NUCLEAR REACTIONS 1H(p, p'X), E ≈ threshold; analyzed η' meson production σ; deduced role of η'p final state interaction.

doi: 10.1007/s100500050368
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1999BO50      Phys.Rev. C60, 055212 (1999)

R.Bockmann, C.Hanhart, O.Krehl, S.Krewald, J.Speth

πNN Vertex Function in a Meson-Theoretical Model

doi: 10.1103/PhysRevC.60.055212
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1999KR21      Phys.Rev. C60, 055206 (1999)

O.Krehl, C.Hanhart, S.Krewald, J.Speth

What Does ' ρ Exchange ' in πN Scattering Mean ?

doi: 10.1103/PhysRevC.60.055206
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1999NA38      Phys.Rev. C60, 055209 (1999)

K.Nakayama, J.W.Durso, J.Haidenbauer, C.Hanhart, J.Speth

φ-Meson Production in Proton-Proton Collisions

NUCLEAR REACTIONS 1H(p, pX), E=2.85 MeV; calculated φ-meson production associated σ(θ); deduced reaction mechanism features. Relativistic meson-exchange model. Comparisons with data.

doi: 10.1103/PhysRevC.60.055209
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1999NI01      Phys.Rev. D60, 014004 (1999)

N.N.Nikolaev, W.Schafer, A.Szczurek, J.Speth

Do the E866 Drell-Yan Data Change Our Picture of the Chiral Structure of the Nucleon ?

NUCLEAR REACTIONS 1H(p, X), E=high; analyzed data. 1H deduced structure function asymmetry mechanism, related features.

doi: 10.1103/PhysRevD.60.014004
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1999RA08      Phys.Rev. C59, R1237 (1999)

R.Rapp, J.W.Durso, Z.Aouissat, G.Chanfray, O.Krehl, P.Schuck, J.Speth, J.Wambach

Enhancement of πA → ππA Threshold Cross Sections by In-Medium ππ Final State Interactions

NUCLEAR REACTIONS 2H, 40Ca(π+, π+π-), (π+, 2π+), E=282.7 MeV; calculated two-pion invariant mass spectra; deduced two-pion final state interaction medium modifications, related features. Comparison with data.

doi: 10.1103/PhysRevC.59.R1237
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1998HA13      Nucl.Phys. A629, 111c (1998)

J.Haidenbauer, J.Speth

Meson-Meson and Meson-Nucleon Scattering and the Structure of Hadrons

doi: 10.1016/S0375-9474(97)00674-X
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1998HA18      Nucl.Phys. A631, 515c (1998)

C.Hanhart, J.Haidenbauer, J.Speth

Threshold Pion Production in Nucleon-Nucleon Collisions

NUCLEAR REACTIONS 1H(p, pπ0), 1n(p, dπ0), E not given; calculated σ; deduced rescattering contributions. Comparison with data.

doi: 10.1016/S0375-9474(98)00058-X
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1998HA25      Phys.Lett. 424B, 8 (1998)

C.Hanhart, J.Haidenbauer, M.Hoffmann, Ulf.-G.Meissner, J.Speth

The Reactions pp → ppπ0 and pp → dπ+ at Threshold: The role of the isoscalar πN scattering amplitude

NUCLEAR REACTIONS 1H(p, pπ0), (p, π+), E ≈ threshold; calculated phase shifts, total σ; deduced role of isoscalar scattering amplitude. Chiral perturbation theory, semi-phenomenological boson exchange model. Comparison with data.

doi: 10.1016/S0370-2693(98)00216-0
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1998HA61      Phys.Lett. 444B, 25 (1998)

C.Hanhart, J.Haidenbauer, O.Krehl, J.Speth

Role of the Δ Isobar in the Reaction NN → NNπ Near Threshold

NUCLEAR REACTIONS 1H(polarized p, nπ+), (polarized p, π+), (polarized p, pπ0), (n, pπ-), E ≈ threshold; calculated total σ, Ay(θ), other polarization observables; deduced Δ isobar role. Comparison with data.

doi: 10.1016/S0370-2693(98)01385-9
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1998HA63      Acta Phys.Pol. B29, 3047 (1998)

C.Hanhart, J.Haidenbauer, J.Speth

Pion Production in Proton-Proton Collisions

NUCLEAR REACTIONS 1H(p, pπ0), (p, nπ+), (p, π+), E not given; calculated pion production σ; deduced Δ contribution. Comparison with data.


1998KA44      Acta Phys.Pol. B29, 2231 (1998)

S.Kamerdzhiev, J.Speth, G.Tertychny

Effects of the Quasiparticle-Phonon Interaction in Magic and Non-Magic Nuclei

NUCLEAR REACTIONS 40Ca, 58Ni(α, α'), E=240 MeV; analyzed E0 resonance strength distributions; deduced quasiparticle-phonon interaction role.


1998KR17      Acta Phys.Pol. B29, 2477 (1998)

O.Krehl, J.Speth

The Structure of Baryon Resonances in πN Scattering


1998KR27      Acta Phys.Pol. B29, 3073 (1998)

O.Krehl, S.Krewald, J.Speth

πN → ηN Cross Sections and the Influence of Baryonic Resonances


1998ME26      Phys.Rev. D59, 014033 (1998)

W.Melnitchouk, J.Speth, A.W.Thomas

Dynamics of Light Antiquarks in the Proton

NUCLEAR REACTIONS 1,2H(p, X), E=high; analyzed data; deduced x-dependence of antiquark distributions asymmetry.

doi: 10.1103/PhysRevD.59.014033
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1998NA11      Phys.Rev. C57, 1580 (1998)

K.Nakayama, A.Szczurek, C.Hanhart, J.Haidenbauer, J.Speth

Production of ω Mesons in Proton-Proton Collisions

NUCLEAR REACTIONS 1H(p, p'X), E=1890-2200 MeV; calculated ω-meson σ(θ), production σ; deduced off-shell effects. Comparison with data. Meson exchange model.

doi: 10.1103/PhysRevC.57.1580
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1998NA31      Acta Phys.Pol. B29, 2519 (1998)

K.Nakayama, S.Krewald, J.Speth

Possible Role of the ρN Coupling in Pion Photo-Production


1998SC04      Phys.Rev. C57, 1464 (1998)

C.Schutz, J.Haidenbauer, J.Speth, J.W.Durso

Extended Coupled Channels Model for πN Scattering and the Structure of N(*)(1440) and N(*)(1535)

doi: 10.1103/PhysRevC.57.1464
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1998SZ03      Phys.Lett. 428B, 383 (1998)

A.Szczurek, N.N.Nikolaev, J.Speth

Leading Proton Spectrum from DIS at HERA

NUCLEAR REACTIONS 1H(e, e'pX), E=high; calculated proton spectrum contributions; deduced reaction mechanism features.

doi: 10.1016/S0370-2693(98)00444-4
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1997DZ01      Phys.Lett. 401B, 321 (1997)

Z.Dziembowski, H.Holtmann, A.Szczurek, J.Speth

Transition from Meson to Quark Dynamics in the Nucleon Form Factors

NUCLEAR STRUCTURE 1H, 1n; calculated electromagnetic form factors, μ, rms radii.

doi: 10.1016/S0370-2693(97)00398-5
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1997DZ03      Ann.Phys.(New York) 258, 1 (1997)

Z.Dziembowski, H.Holtmann, A.Szczurek, J.Speth

Pionic Corrections to Nucleon Electromagnetic Properties in a Light-Cone Framework

NUCLEAR STRUCTURE 1n, 1H; calculated form factors, radii. Pion cloud model, relativistic calculations.

doi: 10.1006/aphy.1997.5693
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1997KA57      Nucl.Phys. A624, 328 (1997)

S.Kamerdzhiev, J.Speth, G.Tertychny

Microscopic Description of the E0, E2 and E1 Giant Resonances in 40Ca, 48Ca and 56Ni

NUCLEAR STRUCTURE 40,48Ca, 56Ni; calculated E0, E1, E2 giant resonances, strength functions, E1 transition densities; deduced ground-state correlations role. Continuum RPA, particle-hole-phonon coupling.

doi: 10.1016/S0375-9474(97)00315-1
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1997KH10      Z.Phys. A359, 191 (1997)

M.Kh.Khankhasayev, A.Szczurek, J.Speth

On Mesonic Interference Phenomena in Deep Inelastic Scattering

doi: 10.1007/s002180050386
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1997KR02      Phys.Lett. 390B, 23 (1997)

O.Krehl, R.Rapp, J.Speth

Meson-Meson Scattering: K(K-bar)-Thresholds and f0(980)-a0(980) Mixing

doi: 10.1016/S0370-2693(96)01425-6
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1997KR09      Nucl.Phys. A623, 162c (1997)

O.Krehl, J.Speth

Quasi Bound States from T-Channel Exchange

doi: 10.1016/S0375-9474(97)00435-1
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1997SP06      Z.Phys. C75, 717 (1997)

J.Speth, R.Tegen

ωNN Vertex Function and the γπππ Anomaly

doi: 10.1007/s002880050518
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1997SZ05      Nucl.Phys. A624, 495 (1997)

A.Szczurek, V.Uleshchenko, H.Holtmann, J.Speth

Production of the W and Z Bosons in the Nucleon-(Anti)Nucleon Collisions and the Meson Cloud in the Nucleon

NUCLEAR REACTIONS 1H(p, X), (p-bar, X), E=high; analyzed W, Z boson production, lepton asymmetries, other observables; deduced meson cloud effect.

doi: 10.1016/S0375-9474(97)00356-4
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1996BE66      Z.Phys. A355, 267 (1996)

O.Benhar, S.Fantoni, N.N.Nikolaev, J.Speth, A.A.Usmani, B.G.Zakharov

Glauber Theory of Initial- and Final-State Interactions in (p, 2p) Scattering

NUCLEAR REACTIONS 27Al(p, 2p), E at 6-12 GeV/c; 16O, 40Ca(p, 2p), E at 6, 12 GeV/c; calculated nuclear transparency vs missing momentum x-, y-compenents; analyzed data. Quasielastic scattering, initial, final states Glauber theory description.

doi: 10.1007/s002180050109
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1996BF01      Zh.Eksp.Teor.Fiz. 110, 1933 (1996); J.Exper.Theo.Phys. 83, 1063 (1996)

O.Benhar, S.Fantoni, N.N.Nikolaev, J.Speth, A.A.Usmani, B.G.Zakharov

On the Missing-Momentum Dependence of the Color-Transparency Effects in (e, e'p) Scattering

NUCLEAR REACTIONS 16O, 40Ca(e, e'p), E not given; calculated nuclear transparency, missing momentum distribution in parallel, transverse kinematics; deduced non-vanishing off diagonal incoherent rescattering contribution. Coupled-channel multiple-scattering theory.


1996HA48      Acta Phys.Pol. B27, 2893 (1996)

J.Haidenbauer, Ch.Hanhart, J.Speth

Threshold Meson Production in Nucleon-Nucleon Collisions


1996HO02      Nucl.Phys. A596, 631 (1996)

H.Holtmann, A.Szczurek, J.Speth

Flavour and Spin of the Proton and the Meson Cloud

NUCLEAR REACTIONS 1H(p, X), E=high; calculated Λ-, n-, Δ++-production differential σ.

doi: 10.1016/0375-9474(95)00448-3
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1996HO04      Z.Phys. A353, 411 (1996)

H.Holtmann, N.N.Nikolaev, J.Speth, A.Szczurek

Pion Content of the Nucleon as Seen in the NA51 Drell-Yan Experiment

doi: 10.1007/BF01285152
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1996JA22      Phys.Rev. C54, 2218 (1996)

G.Janssen, K.Holinde, J.Speth

πρ Correlations in the NN Potential

NUCLEAR REACTIONS 1H(n, n), E ≤ 300 MeV; calculated phase shifts. Correlated πρ-exchange in NN-interaction.

NUCLEAR STRUCTURE 2H; calculated binding energy, D-state probability, quadrupole moment, D- to S-state asymptotic ratio.

doi: 10.1103/PhysRevC.54.2218
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1996KA09      Nucl.Phys. A599, 373c (1996)

S.Kamerdzhiev, J.Speth

Distribution of Giant Resonance Strength in Stable and Unstable Nuclei

NUCLEAR REACTIONS 208Pb(γ, X), E ≤ 40 MeV; compiled, reviewed calculations of giant resonance photoabsorption σ(E). 208Pb(γ, n), E ≤ 22 MeV; calculated σ(E). Microscopic theory.

NUCLEAR STRUCTURE 48,40Ca, 56,78Ni, 100,132Sn, 208Pb; compiled, reviewed calculations of B(M1).

doi: 10.1016/0375-9474(96)00080-2
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1996MA42      Nucl.Phys. A606, 41 (1996)

M.Macfarlane, J.Speth, D.Zawischa

The Orbital Magnetic Dipole Response of Nonspherical Nuclei

NUCLEAR REACTIONS 156Gd(e, e'), E=30 MeV; 162Dy(γ, γ'), E not given; 238U(p, p'), E not given; analyzed data, analyses; deduced orbital M1 response related features.

doi: 10.1016/0375-9474(96)00201-1
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1996MA45      Nucl.Phys. A608, 305 (1996)

Z.-Y.Ma, J.Speth, S.Krewald, B.-Q.Chen, A.Reuber

Hypernuclei with Meson-Exchange Hyperon-Nucleon Interactions

NUCLEAR STRUCTURE A=12-208; calculated Λ hypernuclei single particle levels, other aspects. Relativistic mean field theory.

doi: 10.1016/S0375-9474(96)00169-8
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