DOI: https://doi.org/10.30970/jps.03.295
THE ROLE OF TENSOR FORCES IN NUCLEON-NUCLEON SCATTERING WITHIN NONLINEAR CHIRAL LAGRANGIAN APPROACH
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Journal of Physical Studies 3(3), 295–299 (1999)
DOI: https://doi.org/10.30970/jps.03.295 THE ROLE OF TENSOR FORCES IN NUCLEON-NUCLEON SCATTERING WITHIN NONLINEAR CHIRAL LAGRANGIAN APPROACH |
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V. I. Lengyel, O. O. Shpenyk
Uzhhorod State University,
32 Voloshin Str., Uzhhorod, UA-88000, Ukraine
The problem of nucleon–nucleon scattering is considered within nonlinear chiral Lagrangian approach. The Lagrangian was of the SU2$\times$SU2 nonlinear form with four–fermion interaction. It turns out that tensor term has to be included for quantitative description of the — $δ _{1S_{0} } $, $δ _{3S_{1}}$ phase shifts. Introducing only two adjustable parameters, namely $g_T$ and $B$, we obtain good energy behaviour of these phases up to 1000~MeV.