Two-component model for the deuteron electromagnetic structure

Abstract

We suggest a simple phenomenological parametrization for all three deuteron electromagnetic form factors, and show that a good fit on the available data, with a minimal number of parameters, can be obtained. The present description of the deuteron electromagnetic structure is based on two components with different radii, one corresponding to two nucleons separated by ≃2 fm, and a standard isoscalar contribution, saturated by ω and φ mesons, only.

Charge form factor and cluster structure of the 6Li nucleus

“…The values of two sets of the parameters α, β, γ and δ obtained in [44] by a best fit to the experimental data, which are used in the calculations of the present work, are given in Table 1. In Fig.…”

“…In Fig. 2 are presented the experimental data for the deuteron charge form factor [42,43] and the result of the parametrization from [44] up to ≈ 3 8 fm…”

“…correction) and the experimental data for the charge form factors of 4 He and the deuteron. For the latter we use the same parametrization from [44], Eq. (4)-Eq.…”

“…The latter are those from the Thomas Jefferson Laboratory experiments in which the deuteron charge form factor was measured for the first time to a transferred momentum value up to = 6 64 fm −1 and the node of the form factor was observed (Abbott et al [42,43]). In our calculations for the deuteron charge form factor, we use a best fit parametrization obtained in [44]. It is represented by Eq.…”

Two-component model for the axial form factor of the nucleon

“…It has been shown to be rather successful in the description of the nucleon electromagnetic form factors both in the space-and in the timelike region [13,14,15]. Other applications of the two-component model include the deuteron [16] and the strange form factors of the proton [17].…”