• Charge symmetry of the nuclear force as off-shell constraint 

  Sauer, Peter Ulrich (College Park, MD : American Physical Society, 1975)

  Off-shell changes are generated in the 1S0 nucleon-nucleon interaction using the Reid soft-core potential and unitary transformations of short range. Charge symmetry is assumed for the nuclear force. The same off-shell ...
• Off-energy-shell continuation of the nucleon-nucleon and meson-nucleon transition matrices in the presence of inelasticities 

  Sauer, Peter Ulrich; Sevgen, A. (College Park, MD : American Physical Society, 1976)

  A technique for constructing the nucleon-nucleon transition matrices T in the presence of inelastic channels is given. The present technique avoids the usual potential fit and continues T off the energy shell directly ...
• Does it make sense to talk about NΔ phase shifts? 

  Garcilazo, H.; Mizutani, T.; Pea, M.T.; Sauer, Peter Ulrich (College Park, MD : American Physical Society, 1990)

  The question of whether one can consistently define and extract nucleon-delta scattering parameters, phase shifts, and inelasticities from the partial-wave NN→NΔ amplitudes is discussed. We have studied the unitarity ...
• Three-body force from kinematical effects in the three-nucleon system 

  Hajduk, Ch.; Sauer, Peter Ulrich (College Park, MD : American Physical Society, 1980)

  A Galilean-noninvariant correction to ordinary one-boson-exchange potentials is derived. It gives rise to a three-body force in the three-nucleon system. Its importance for the properties of the three-nucleon bound state ...
• Role of the neutron charge form factor in electron scattering from the three-nucleon system 

  Brandenburg, R.A.; Sauer, Peter Ulrich (College Park, MD : American Physical Society, 1975)

  We investigate the effects which the experimental uncertainty of the neutron charge form factor can have on the charge form factors of 3H and 3He. NUCLEAR REACTIONS Elastic electron scattering, charge form factors, ...
• Two-body electrodisintegration of the three-nucleon bound state with Δ-isobar excitation 

  Yuan, L.P.; Chmielewski, K.; Oelsner, M.; Sauer, Peter Ulrich; Adam, J. (College Park, MD : American Physical Society, 2002)

  Electrodisintegration of the three-nucleon bound state with two-body final states is described. The description uses nucleon degrees of freedom extended to include the excitation of a single nucleon to a Δ isobar. The ...
• Light-front Bethe-Salpeter equation 

  Sales, J.H.O.; Frederico, T.; Carlson, B.V.; Sauer, Peter Ulrich (College Park, MD : American Physical Society, 2000)

  A three-dimensional reduction of the two-particle Bethe-Salpeter equation is proposed. The proposed reduction is in the framework of light-front dynamics. It yields auxiliary quantities for the transition matrix and the ...
• Polarization effects in pion electroproduction from 3He 

  Schulze, R.-W.; Sauer, Peter Ulrich (College Park, MD : American Physical Society, 1997)

  Inelastic electron scattering from 3He is studied in the kinematic region of pion production. Inclusive processes with polarization of the electron probe and of the 3He target are described in the plane wave impulse ...
• Discrepancy in the cross section minimum of elastic nucleon-deuteron scattering 

  Nemoto, S.; Chmielewski, K.; Oryu, S.; Sauer, Peter Ulrich (College Park, MD : American Physical Society, 1998)

  Δ-isobar excitation in the nuclear medium yields an effective three-nucleon force. A coupled-channel formulation of nucleon-deuteron scattering with Δ-isobar excitation developed previously is used. The three-particle ...
• Renormalization of the ladder light-front Bethe-Salpeter equation in the Yukawa model 

  Sales, J.H.O.; Frederico, T.; Carlson, B.V.; Sauer, Peter Ulrich (College Park, MD : American Physical Society, 2001)

  The reduction of the two-fermion Bethe-Salpeter equation in the framework of light-front dynamics is studied for the Yukawa model. It yields auxiliary three-dimensional quantities for the transition matrix and the bound ...
• Polarized deep-inelastic lepton scattering from the polarized two- and three-nucleon bound states 

  Schulze, R.-W.; Sauer, Peter Ulrich (College Park, MD : American Physical Society, 1997)

  A relativistic description of polarized deep-inelastic lepton scattering from polarized nuclei is presented. It is based on front form dynamics. Convolution formulas for the nuclear spin structure functions gA1 and gA2 are ...
• Inelastic electron scattering from the three-nucleon bound states with polarization 

  Schulze, R.-W.; Sauer, P.U. (College Park, MD : American Physical Society, 1993)

  Spin-dependent inelastic electron scattering from polarized 3He is studied. The theoretical description uses the plane-wave impulse approximation. A spin-dependent spectral function, which summarizes all of the nuclear ...
• Effect of the NΔ interaction on observables of the πNN and γNN systems 

  Peña, M.T.; Garcilazo, H.; Oelfke, U.; Sauer, P.U. (College Park, MD : American Physical Society, 1992)

  Effects on the hadronic and electromagnetic properties of the two-nucleon system above pion threshold, arising from the interaction of the Δ isobar with nucleons, are investigated. The instantaneous nucleon-Δ potential is ...
• Three-nucleon force and the Δ mechanism for pion production and pion absorption 

  Peña, M.T.; Sauer, P.U.; Stadler, A.; Kortemeyer, G. (College Park, MD : American Physical Society, 1993)

  The description of the three-nucleon system in terms of nucleon and Δ degrees of freedom is extended to allow for explicit pion production (absorption) from single dynamic Δ deexcitation (excitation) processes. This mechanism ...
• Effects of a quark-model-based nucleon-Δ potential on the two-nucleon system above pion threshold 

  Valcarce, A.; Fernández, F.; Garcilazo, H.; Peña, M.T.; Sauer, P.U. (College Park, MD : American Physical Society, 1994)

  The interaction between a nucleon and a Δ isobar is studied. The nucleon-Δ potential is derived from a nonrelativistic quark model. It is compared with a corresponding one based on meson exchange. The quark-model potential ...
• Faddeev equations with three-nucleon force in momentum space 

  Stadler, A.; Glöckle, W.; Sauer, P.U. (College Park, MD : American Physical Society, 1991)

  Modified Faddeev equations that allow the inclusion of irreducible three-body forces in addition to two-body interactions are formulated and the technical apparatus for their solution in momentum space is described. Results ...
• Effect of the three-nucleon force on the three-nucleon ground state: Reducible and irreducible contributions 

  Stadler, A.; Sauer, P.U. (College Park, MD : American Physical Society, 1992)

  The Tucson-Melbourne two-pion exchange three-nucleon force is split into a reducible part mediated by Δ excitation and an irreducible part not mediated by Δ excitation. The triton binding energy is calculated. The irreducible ...
• Effect of the nucleon-delta interaction on properties of the three-nucleon ground state 

  Pea, M.T.; Henning, H.; Sauer, P.U. (College Park, MD : American Physical Society, 1990)

  Wave-function components containing a single Δ isobar are included in the calculation of the three-nucleon bound state. In extension to previous work, a nucleon-Δ potential based on meson exchange is incorporated in the ...
• Triton calculations with π and ρ exchange three-nucleon forces 

  Stadler, A.; Adam, Jr. J.; Henning, H.; Sauer, P.U. (College Park, MD : American Physical Society, 1995)

  The Faddeev equations are solved in momentum space for the trinucleon bound state with the new Tucson-Melbourne π and ρ exchange three-nucleon potentials. The three-nucleon potentials are combined with a variety of realistic ...
• Relations between isoscalar charge form factors of two- and three-nucleon systems 

  Henning, H.; Adam, Jr. J.; Sauer, P.U.; Stadler, A. (College Park, MD : American Physical Society, 1995)

  Theoretical predictions for the deuteron and the isoscalar trinucleon charge form factors are compared. Correlations between them are found. Linear relations hold for the position of the diffraction minimum and for the ...

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