Electrodisintegration of the Deuteron. II. Final-State Interactions

Abstract

The effects of interactions between the outgoing nucleons on the cross sections for the inelastic electrondeuteron scattering process e-\-d-^ e-j-p-j-n are examined in detail. Results are presented as corrections to the theoretical cross sections which were calculated in a previous paper with a relativistic theory but neglecting final-state interactions. The changes are significant for the determination of the electromagnetic form factors of the neutron from the experimental cross sections. The method of the paper follows the treatment of final-state interactions given by Durand, extended to include the D state of the deuteron and the coupling between final-state partial waves of the same total angular momentum and parity. The resulting expressions for the quasielastic peak cross sections are expected to be valid in the momentumtransfer range 0<q^<1.0 (BeV/cy. An alternative approach is suggested for the analysis of experiments at larger q^ using an absorption model of the type which has been applied successfully to high-energy particle reactions.

Measurement of elastic electron-neutron scattering and inelastic electron-deuteron scattering cross sections at high momentum transfer

“…Wave Impulse Approximation (PWIA) of McGee [40] given by where q is the absolute value of the three-momentum It can be seen that the x2 values for Q2 < 6 (GeV/c)2 are not very good for any of the potentials, but are reasonable for the two highest Q2 points for all except the Bonn potential (this is the one with the smallest amount of high momentum components). The reason the fits are not good for the lower Q2 data can be seen in Fig.…”

“…. 14, Ratios of deuterium cross sections to the PWIA model of McGee-Durand [40] for five values of the scaling variable y, using the Paris potential. Shown are data from this experiment and several previous experiments at both forward and backward angles [43].…”

Measurements of νW2andR=σL/Pe1, Lung2, Andivahis3 et al. 1992Phys. Rev. C151170View full textAdd to dashboardCite

“…This relation is particularly useful when R is small, as it is known to be in the deep-inelastic region [16]. In the quasielastic region and for an isoscalar target, the nonrelativistic plane-wave impulse approximation [17] can be used to determine R in terms of the elastic nucleon form The nucleon elastic form-factor measurements of the present experiment [8,9] show that, to a good approximation, the form factors follow the scaling law E139 [18], and experiment E133 [4] and for iron from experiment NE3 [3]. The [18] and E133 [4] and iron data from SLAC experiment NE3 [3].…”

Breakup reactions and their ambiguities

“…First studies of electro-disintegration of the deuteron were performed at rather low incident energy and low momentum transfer, below 300 MeV/c [85][86][87]. At such low momentum transfer, the interpretation of the data required to take into account final state interactions (FSI) [88,89] and mesonexchange currents (MEC). Later measurements at Saclay [90,91], with a momentum transfer between 300 and 700 MeV/c, and at CEBAF [92] allowed to minimize these effects of FSI and EMC as the momentum transfer Q 2 of the virtual photon was increased [93].…”