Isospin Multiplet Structure in Ultra--Heavy Fermion Bound States

Details Isospin Multiplet Structure in Ultra--Heavy Fermion Bound States Isospin Multiplet Structure in Ultra--Heavy Fermion Bound States

1993-07-13

arxiv.org/abs/hep-ph/9307264v1

Phys.Rev.D49:2514-2524,1994

Physics

High Energy Physics

High Energy Physics - Phenomenology

20 pages, 7 figures (hard copy available upon request), report# KU-HEP-93-29

Scientific paper

10.1103/PhysRevD.49.2514

The coupled Bethe--Salpeter bound state equations for a $Q\bar Q$ system, where $Q=(U,D)$ is a degenerate, fourth generation, super--heavy quark doublet, are solved in several ladder approximation models. The exchanges of gluon, Higgs and Goldstone modes in the standard model are calculated in the ultra--heavy quark limit where weak $\gamma, W^\pm$ and $Z^0$ contributions are negligible. A natural $I=0$ and $I=1$ multiplet pattern is found, with large splittings occuring between the different weak iso--spin states when $M_Q$, the quark masses, are larger than values in the range $0.4 TeV

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