PROTON-NUCLEUS ELASTIC SCATTERING AT ~1 GeV AND THE NN AMPLITUDE

Abstract

Working within the framework of Coulomb modified correlation expansion of the Glauber amplitude, we analyse the elastic scattering of ∼1 GeV protons on 4 He, 12 C, 16 O and 40 Ca nuclei. Emphasis has been put on the use of different parametrizations of the basic (input) NN amplitude, which provide equivalently good accounts of the elastic NN scattering observables up to the available momentum transfer region. Using realistic form factors for target nuclei, it is found that the proton-nucleus collisions could provide a test to know which is the better choice of the NN amplitude. The analysis also considers the possibility of extracting some additional information about the matter density distributions.

K+-nucleus elastic scattering at intermediate energies

“…The basic (input) K + N amplitude is parametrized in the same form as the NN amplitude [6], and its parameters are obtained from the K + N phase shifts [7]. Moreover, encouraged by the findings of Coker, Lumpe, and Ray [8,9] regarding the enhanced sensitivity of K + mesons to interior nuclear structure properties compared to that of protons, we attempt to see the suitability of the nucleon density distributions as obtained from the analyses of intermediate-energy proton scattering experiments [6,10,11] and the relativistic mean field (RMF) calculations [12]. Following Siegel et al [1], the analysis also considers the nuclear medium effects, and predicts the in-medium behavior of the K + N amplitude.…”

“…Moreover, it is to be noted that Eq. (1) has been modified to account for the (i) Coulomb effects [6], and (ii) deviation in the straight-line trajectory of the Glauber model because of the Coulomb field [6].…”

“…σ t is the total cross section of K + N scattering, and ρ is the ratio of the real to the imaginary parts of the forward K + N amplitude. [6,10,11] and the relativistic mean field (RMF) calculations [12].…”

“…As already mentioned, we parametrize the kaon-nucleon amplitude in the same form as the NN amplitude [6], (Table I). The calculations involve the nucleon density distributions as obtained in Refs.…”

“…The calculations involve the nucleon density distributions as obtained in Refs. [6,[10][11][12]. The data are taken from Refs.…”