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      Transverse electron scattering response function of \(^3\)He with \(\Delta\)-isobar degrees of freedom

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          Abstract

          A calculation of the \(^3\)He transverse \((e,e')\) inclusive response function, \(R_T\), which includes \(\Delta\) degrees of freedom is performed using the Lorentz integral transform method. The resulting coupled equations are treated in impulse approximation, where the \(NNN\) and \(NN\Delta\) channels are solved separately. As NN and NNN potentials we use the Argonne V18 and UrbanaIX models respectively. Electromagnetic currents include the \(\Delta\)-isobar currents, one-body N-currents with relativistic corrections and two-body currents consistent with the Argonne V18 potential. \(R_T\) is calculated for the breakup threshold region at momentum transfers near 900 MeV/c. Our results are similar to those of Deltuva {\it et al.} in that large \(\Delta\)-isobar current contributions are found. However we find that these are largely canceled by the relativistic contribution from the one-body N-currents. Finally a comparison is made between theoretical results and experimental data.

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          Author and article information

          Journal
          17 June 2010
          2010-10-28
          Article
          10.1103/PhysRevC.82.054003
          1006.3499
          f6cf92b9-52c4-4520-bb2a-268b970fd9b4

          http://arxiv.org/licenses/nonexclusive-distrib/1.0/

          History
          Custom metadata
          Phys.Rev.C82:054003,2010
          21 pages,4 figures, a replacement of arXiv:1006.3499v1, additional calculations at different kinematics
          nucl-th

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