Abstract
The authors examine the accuracy of the quasi-deuteron model (QD) work for the trinucleon, for processes that involve small separations of a nucleon-nucleon pair. They find that the QD model is accurate to 10% for the trinucleon wavefunction, for separations from 0.5-2 fm, for the (spin-averaged) Eikemeier-Hackenbroich potential. They make the additional ansatz that the trinucleon wavefunction is symmetric on exchange of the two Jacobi vectors, and deduce that for 'large q2 the trinucleon isoscalar charge form factor (at 3q2/4) should be approximately proportional to the deuteron monopole form factor (at q2). This proportionality holds within experimental errors of several percent for 1.8<or=q2<or=6.2 fm-2: the trinucleon form factor is equal to 1.95 times the deuteron monopole form factor.
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