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Pramana

, Volume 22, Issue 3–4, pp 257–274 | Cite as

A study of pion absorption by16O using realistic interactions—I. Twonucleon emission following bound-pion absorption

  • U N L Mathur
  • Y R Waghmare
Particle Physics

Abstract

Matrix element of the Galilean invariant non-relativistic reduction of the pseudoscalar-pseudovector interaction has been calculated assuming the reaction to be a direct process with boundπ being absorbed by a correlated pair of nucleons. The Hartree-Fock wavefunctions obtained with the unitary-model-operator approach starting with the realistic nucleon-nucleon interaction have been used forπ-capturing nucleon pair in the initial state. The calculations have been done with and without antisymmetrising the initial state wavefunction of the pion absorbing pair. For the final state nucleon-nucleon interaction has been taken into account. The strongπ-nucleus interaction together with the Coulomb interaction with the finite nuclear size on the bound pion wavefunction are taken into account. Angular distributions of the emitted nucleon-pair, the branching ratios and the total absorption rates are calculated for16O with and without antisymmetrisation effect. The calculated results are compared with the experimental and other theoretical work.

Keywords

Bound-pion absorption Hartree-Fock wavefunctions absorption by nucleon pair pion-nucleon interaction antisymmetric wavefunctions initial state pion wavefunctions final state pion wavefunctions 

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Copyright information

© Indian Academy of Sciences 1984

Authors and Affiliations

  • U N L Mathur
    • 1
  • Y R Waghmare
    • 1
  1. 1.Department of PhysicsIndian Institute of TechnologyKanpurIndia

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