• Zeros of the helicity amplitudes of Σ-p and Λ-p elastic scattering

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      https://www.ias.ac.in/article/fulltext/pram/023/04/0475-0484

    • Keywords

       

      Σ-p elastic scattering; Λ-p elastic scattering; analyticity; conformal mapping; optimised polynomial expansion technique

    • Abstract

       

      The forces of interaction as reflected in the cosθ plane analytic structures of the helicity amplitudes of Σ-p and Λ-p scattering are optimally exploited using the conformal mapping technique of Cutkosky and coworkers. A suitable parametrization of these amplitudes in the mapped variable is then chosen so that it can see the zeros better. These zeros are then located by making a good fit to the differential scattering cross-section curves. The effect of these zeros upon the cross-sections is discussed. Values for the phase shifts and coupling parameters between channels of fixedJ values are also computed.

    • Author Affiliations

       

      S Mohanty1 J K Mohapatra1 2

      1. Department of Physics, Utkal University, Vani Vihar, Bhubaneswar - 751 004, India
      2. Department of Physics, Regional College of Education, Bhubaneswar - 751 007, India
    • Dates

       
  • Pramana – Journal of Physics | News

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      Posted on July 25, 2019

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