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Three-body electrodisintegration of the three-nucleon bound state with Δ -isobar excitation: Processes below pion-production threshold

2004; American Institute of Physics; Volume: 70; Issue: 3 Linguagem: Inglês

10.1103/physrevc.70.034004

1538-4497

A. Deltuva, L. Yuan, J. Adam, P. U. Sauer,

Atomic and Molecular Physics

Electron scattering from the three-nucleon bound state with two- and three-body disintegration is described. The description uses the purely nucleonic charge-dependent CD-Bonn potential and its coupled-channel extension $\mathrm{CD}\text{\penalty1000-\hskip0pt}\text{Bonn}+\ensuremath{\Delta}$. 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 $\ensuremath{\Delta}$-isobar channels. $\ensuremath{\Delta}$-isobar effects on the observables are isolated. The $\ensuremath{\Delta}$-isobar excitation yields an effective three-nucleon force and effective two- and three-nucleon currents beside other $\ensuremath{\Delta}$-isobar effects; they are mutually consistent.