Extended time reversal operator and the symmetries of the hyperon - nucleon interaction
Dec, 1996
34 pages
Published in:
- Prog.Theor.Phys. 97 (1997) 587-616
DOI:
Report number:
- KUNS-1429
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Abstract: (Oxford Journals)
An extended time-reversal operator incorporating charge conjugation in the flavor SU_3 space is introduced in order to study the spin-flavor structure of the hyperon-nucleon interaction. Particle-hole conjugation in terms of this extended time reversal is found to be useful to characterize time-reversal odd components for the space-spin part of the hyperon-nucleon interaction, which yield non-zero contributions to the exchange Feynman diagram or to the transition amplitude between ΛN and ΣN systems when the flavor symmetry breaking is properly introduced. Some selection rules are also given for the spin-flavor factors appearing in the quark-model potentials of the hyperon-nucleon interaction.- nucleon hyperon: interaction
- Lambda
- Sigma
- quark: potential
- symmetry: SU(3)
- spin: flavor
- selection rule
- spin: orbit
- spin: correlation
- symmetry breaking: flavor
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