• Phase shift analysis of hyperon-nucleon elastic scattering using optimized polynomial expansion techniques

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      https://www.ias.ac.in/article/fulltext/pram/027/03/0393-0400

    • Keywords

       

      Hyperon nucleon elastic scattering; helicity amplitudes; polynomial expansion technique; phase shifts; coupling parameters

    • Abstract

       

      A relatively stable method of phase shift analysis of hyperon-nucleon scattering proposed by us is applied to Σ+p and Λp scattering. The analytic cutt-planes of analyticity of the helicity amplitudes are mapped into the interior of unifocal ellipses. The helicity amplitudes are then expressed as accelerated convergent expansions in the mapped variable. A definite economy is observed in the number of free parameters for fixed energy phase shift analysis of Σ+p and Λp scattering at 40 and 100 MeV and 100 MeV respectively. Twenty six more phase shifts and coupling parameters corresponding to higherJ values are also predicted.

    • Author Affiliations

       

      S Mohanty1 J K Mohapatra1 2 B B Deo1

      1. Department of Physics, Utkal University, 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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