The Spin–Symmetry of the Quark Model
نویسنده
چکیده
Corrections to the exact heavy–quark symmetry results are expected to follow the 1/mQ mass effect of the heavy–quark. We show, by an explicit calculation, that there is something other than the mass effect that suppresses the breaking of the spin symmetry.
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Meson is composed of one quark and one antiquark moving under the effect of confinement, oscillating and color potentials. Since quarks are particles with spin , there is a spin-spin interaction potential. Also we have isospins for u and d quarks and we can consider related potentials on isospin-isospin and spin-isospin effects. By comparing the given meson spectrum with the amount calculated...
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