American Journal of Modern Physics

Volume 9, Issue 6, November 2020

  • Elastic Scattering of Electrons by Helium Atoms in Born Approximation

    Saidou Diallo, Louis Gomis, Ibrahima Gueye Faye, Moustapha Sadibou Tall, Ismaila Diedhiou

    Issue: Volume 9, Issue 6, November 2020
    Pages: 77-83
    Received: Nov. 07, 2020
    Accepted: Dec. 02, 2020
    Published: Dec. 08, 2020
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    Abstract: Elastic scattering phenomena arising in electron-helium scattering are dominant processes. The determination of accurate elastic differential cross sections for electron-helium scattering has a considerable importance. An accurate calculation of the plane-wave first Born exchange amplitude of electrons elastic scattering by helium atoms is reported... Show More
  • A Theoretical Explanation on Gell-Mann-Nishijima Formula with Singular Number and the Establishment of Lepton Quantum Number Constrained Equation

    Hua Ma

    Issue: Volume 9, Issue 6, November 2020
    Pages: 84-90
    Received: Nov. 11, 2020
    Accepted: Dec. 01, 2020
    Published: Dec. 08, 2020
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    Abstract: In this paper, two fundamental problems of particle physics are studied theoretically. The first one is: to solve the problem of establishing general quantum number constrained equation, the symmetry transformation mechanism of charge eigenstates for elementary particles is adopted, and the general quantum number constrained equations are establish... Show More