δ Isobar Degrees of Freedom in the ^3He Transverse (e,e') Response Function
Abstract
The ^3He transverse electron scattering response function RT(q,φ) is calculated in the quasi-elastic peak region and beyond for momentum transfers q >= 500 MeV/c. In addition to δ-isobar currents (δ-IC) we include meson exchange currents and relativistic corrections to one-body currents. The calculation is performed using the AV18-NN potential and the UrbanaIX three-nucleon force. The δ-IC are calculated in impulse approximation using the Lorentz integral transform (LIT) method (details are given in Ref. [1] and references therein). In addition to results for q=500, 600, and 700 MeV/c we plan to present results at even higher q. Use of the Active Nucleon Breit frame together with the two-fragment kinematical model results in excellent agreement with experiment in the quasi-elastic peak region. In addition our results suggest the importance of δ-IC for three-body break-up reactions in the dip region. [4pt] [1] L. Yuan, V.D. Efros, W. Leidemann, G. Orlandini, and E.L. Tomusiak, Phys. Rev. C72, 011002(R) (2005)
- Publication:
-
APS Division of Nuclear Physics Meeting Abstracts
- Pub Date:
- October 2012
- Bibcode:
- 2012APS..DNP.DG002T