Spin-spin correlations in the reaction NN→NNπ at intermediate energies

J. Dubach, W. M. Kloet, R. R. Wilbar

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The authors predict the spin-spin correlations Ann, A SS, ALS, ASL and depolarisation parameter DNN for the reaction pp to np pi + in the geometry for exclusive, in-plane kinematics. Calculations are based on a relativistic and unitary three-body isobar model. The partial-wave isobar amplitudes T N alpha from NN (for alpha =P11 and P33 pi N quasiparticle interactions) are found by solving coupled Blankenbecler-Sugar integral equations with one-pion-exchange driver terms. Results are presented for several proton-pion angle pairs at Tlab=800 MeV and, for one angle pair, also at Tlab=500 and 1200 MeV. The correlations are typically large and change rapidly as kinematic conditions are varied. There is a moderate model-dependence in these predictions, as seen by comparing with calculations using heavy-boson-exchange modified partial-wave isobar amplitudes.

Original languageEnglish (US)
Article number006
Pages (from-to)475-483
Number of pages9
JournalJournal of Physics G: Nuclear Physics
Issue number4
StatePublished - 1982

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics
  • Physics and Astronomy(all)

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