Transverse electron scattering response function of 3He in the quasi-elastic peak region and beyond with Delta isobar degrees of freedom

Abstract

The 3He transverse electron scattering response function R_T(q,omega) is calculated in the quasi-elastic peak region and beyond for momentum transfers q = 500, 600 and 700 MeV/c. Distinct from our previous work for these kinematics where we included meson exchange currents and relativistic corrections we now additionally include Delta isobar currents (Delta-IC). The Delta-IC contribution increases the quasi-elastic peak height by about 5% and leads to an excellent agreement with experimental data in the whole peak region. In addition it is shown that effects due to the three-nucleon force largely cancel those due to the Delta-IC in the peak region. Finally, we have found that Delta-IC are important for three-body break-up reactions in the so-called dip region. This could explain why in a previous study of such a reaction, where Delta degrees of freedom were not included, no agreement between experimental and theoretical results could be obtained.

6 pages, 4 figures

References in corpus (6)

• The Lorentz Integral Transform (LIT) method and its applications to perturbation induced reactions
• Four-nucleon system with $\Delta$-isobar excitation
• Improved transverse (e,e') response function of 3He at intermediate momentum transfers
• Investigation of the Exclusive ^{3}He(e,e'pn)p Reaction
• Transverse electron scattering response function of ${}^3$He with $\Delta$-isobar degrees of freedom
• Frame dependence of 3He transverse (e,e') response functions at intermediate momentum transfers

Cited by in corpus (3)

• Relativistic effects in ab-initio electron-nucleus scattering
• Signatures of the $\Delta$ isobar in spin observables of ${}^3\mathrm{He}$ electrodisintegration
• Some relativistic aspects of nuclear dynamics at the electrodisintegration of nuclei