Meson exchange potentials in an NN quark model with quark-antiquark excitations
نویسندگان
چکیده
منابع مشابه
Meson Exchange Potentials in an Nn Quark Model with Quark-antiquark Excitations
In a recent quark-model study of the NN interaction, we explicitly incorporated the qq excitations inherent in the quark-gluon interaction lagrangian into the model space, and examined the contributions to the NN potential of particular (3q)(qq) components of the single-nucleon wave function, with specific baryon and meson quantum numbers, through the Wigner transforms of the resultant coupling...
متن کاملNuclear Physics A456 (1986) 669-700 North-Holland, Amsterdam NN TENSOR AND LS POTENTIALS IN A QUARK MODEL WITH QUARK-ANTIQUARK EXCITATIONS
A more detailed study is made of the NN interaction in a quark model in which the (qq) excitations inherent in the quark-gluon interaction are explicitly incorporated into the model space. A unified treatment for all types of exchange terms of the (3q)-(3q) to (3q)-(3q)(q$ coupling kernels is used to calculate the space parts of the full coupling kernels and their Wigner transforms in complete ...
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We calculate the high energy behavior of quark-antiquark exchange in γ * γ * elastic scattering by summing, to all orders, the leading double logarithmic contributions of the QCD ladder diagrams. Motivation comes from the LEP data for σ γ * γ * tot which indicate the need for secondary reggeon exchange. We show that, for large photon virtualities, this exchange is calculable in pQCD. This appli...
متن کاملحالات مزونها و وابستگی آنها به اسپین و ایزواسپین
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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The spectrum of gluons in the presence of a static quark-antiquark pair is studied using Monte Carlo simulations on anisotropic space-time lattices. For very small quark-antiquark separations R, the level orderings and approximate degeneracies disagree with the expectations from an effective string theory. As the quarkantiquark separation R increases, a dramatic rearrangement of the energies oc...
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ژورنال
عنوان ژورنال: Nuclear Physics A
سال: 1986
ISSN: 0375-9474
DOI: 10.1016/0375-9474(86)90296-4