Trinucleon photonuclear reactions with $\Delta$-isobar excitation: Processes below pion-production threshold

Abstract

Radiative nucleon-deuteron capture and two- and three-body photo disintegration of the three-nucleon bound state are described. The description uses the purely nucleonic charge-dependent CD-Bonn potential and its coupled-channel extension CD Bonn + $\Delta$. The $\Delta$-isobar excitation yields an effective three-nucleon force and effective two- and three-nucleon currents besides other $\Delta$-isobar effects; they are mutually consistent. Exact solutions of three-particle equations are employed for the initial and final states of the reactions. The current has one-baryon and two-baryon contributions and couples nucleonic with $\Delta$-isobar channels. $\Delta$-isobar effects on the observables are isolated. Shortcomings of the theoretical description are discussed and their consequence for the calculation of observables is estimated.

18 pages (RevTex4), 15 figures, resubmitted to Phys. Rev. C

References in corpus (7)

• The high-precision, charge-dependent Bonn nucleon-nucleon potential (CD-Bonn)
• Realistic models of pion-exchange three-nucleon interactions
• Search for Three-Nucleon Force Effects in Two-Body Photodisintegration of 3He(3H) and in the Time Reversed Proton-Deuteron Radiative Capture Process
• Faddeev Calculations of Proton-Deuteron Radiative Capture with Exchange Currents
• Three-Nucleon Photodisintegration of 3He
• Trinucleon Photo Reactions with $\Delta$-Isobar Excitation: Radiative Nucleon-Deuteron Capture and Two-Body Photo Disintegration of the Three-Nucleon Bound State
• Electroweak Processes in Few-Nucleon Systems

Cited by in corpus (25)

• Momentum-space treatment of Coulomb interaction in three-nucleon reactions with two protons
• Momentum-space description of three-nucleon breakup reactions including the Coulomb interaction
• Review of two-photon exchange in electron scattering
• Electromagnetic structure of A=2 and 3 nuclei and the nuclear current operator
• Electron and Photon Scattering on Three-Nucleon Bound States
• Three-body electrodisintegration of the three-nucleon bound state with $\Delta$-isobar excitation: Processes below pion-production threshold
• Measurement of the Target-Normal Single-Spin Asymmetry in Quasi-Elastic Scattering from the Reaction ${}^3$He${}^{\uparrow }(e,e^{\prime })$
• Neutron-Deuteron System and Photon Polarization Parameter at Thermal Neutron Energies
• Measurement of the 3He Spin-Structure Functions and of Neutron (3He) Spin-Dependent Sum Rules at 0.035<Q^2<0.24 GeV^2
• Spin observables in deuteron-proton radiative capture at intermediate energies
• The Transverse Electron Scattering Response Function of 3He
• Calculation of two-photon exchange effects for $\Delta$ production in electron-proton collisions
• First Measurements of Spin-Dependent Double-Differential Cross Sections and the GDH Integrand from \vec{^3He}(\vecγ,n)pp at Incident Photon Energies of 12.8 and 14.7 MeV
• Polarization observables in the semiexclusive photoinduced three-body breakup of 3He
• Analyzing powers Ayy, Axx, Axz and Ay in the dd->3Hen reaction at 270 MeV
• Measurement of double-polarization asymmetries in the quasi-elastic ${}^3\overrightarrow{\mathrm{He}}(\vec{\mathrm{e}},{\mathrm{e}}^{\prime }\mathrm{d})$ process
• Transverse electron scattering response function of ${}^3$He with $\Delta$-isobar degrees of freedom
• Relativistic corrections of one-nucleon current in low-energy three-nucleon photonuclear reactions
• Measurement of double-polarization asymmetries in the quasi-elastic ${}^3\overrightarrow{\mathrm{He}}(\vec{\mathrm{e}},{\mathrm{e}}^{\prime }\mathrm{p})$ process
• Measurement of the Doubly-Polarized $\overrightarrow{{}^{3}He}(\vec{\gamma },n)pp$ Reaction at 16.5 MeV and Its Implications for the GDH Sum Rule
• Vector and Tensor Analyzing Powers of the H(d,gamma)He-3 capture reaction
• Proton-deuteron radiative capture cross sections at intermediate energies
• First Measurement of the Asymmetry and the Gerasimov-Drell-Hearn Integrand from $\overrightarrow{{}^{3}He}(\vec{\gamma },p)d$ reaction at the Incident Photon Energy of 29 MeV
• Two-Body Triton Photodisintegration and Wigner-SU(4) Symmetry
• Signatures of the $\Delta$ isobar in spin observables of ${}^3\mathrm{He}$ electrodisintegration