Effects of the phase variation and high-order momentum transfer components of NN amplitude on p-4He elastic scattering

• Published in: Nuclear science and techniques Vol. 29; no. 1; pp. 65 - 76
• Main Author: I. M. A. Tag-Eldin;M. M. Taha;S. S. A. Hassan
• Format: Journal Article
• Language: English
• Published: Singapore Springer Singapore 2018
• Subjects: approximation; Elastic; Energy; Glauber; Hadrons; Heavy Ions; limit; multiple; Nuclear Energy; Nuclear Physics; Optical; scattering; Optical limit approximation; Elastic scattering; Glauber multiple scattering model
• ISSN: 1001-8042; 2210-3147
• DOI: 10.1007/s41365-017-0346-0

Elastic scattering differential cross sections for a p-4He system are calculated within the framework of optical limit approximation of the Glauber multiple scattering model. Three different ranges for proton energy (Elab), 19\Elab\50 MeV, 100 Elab 1730 MeV, and 45 Elab 393 GeV are considered. It is shown that the Pauli blocking fails to describe the data up to the proton energy, Elab\100 MeV. For higher proton energies, a qualitative agreement is obtained. The observed elastic scattering differential cross section is nicely reproduced in the whole range of scattering angles in the center of mass system up to Hc:m:\200 for 19\Elab 100 MeV when the effect of both the nucleon–nucleon (NN) phase variation parameter cNN and higher-order momentum transfer components (kn; n ?1 and 2) of (NN) elastic scattering amplitude is included. In the range of 200 Elab 1730 MeV, introducing kn plays a significant role in describing the data up to the momentum transfer, q2 1:2 (GeV/c)2.Moreover, it is found that considering only the effect of phase variation parameter, cNN, improved the agreement in the region of minima for elastic scattering differential cross section for 45 Elab 393 GeV. The values of cNN and kn as a function of incident proton energies are presented.