Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
1994-03-02
Phys.Lett. B328 (1994) 360-368
Physics
High Energy Physics
High Energy Physics - Phenomenology
Southampton preprint SHEP 93/94-15, This is a latex file with postscript figures attached to the end of the document
Scientific paper
10.1016/0370-2693(94)91491-5
We discuss the unification of the bottom quark and tau lepton Yukawa couplings within the framework of the next-to-minimal supersymmetric standard model. We compare the allowed regions of the $m_t$-$\tan \beta$ plane to those in the minimal supersymmetric standard model, and find that over much of the parameter space the deviation between the predictions of two models is small, and nearly always much less than the effect of current theoretical and experimental uncertainties in the bottom quark mass and the strong coupling constant. However over some regions of parameter space top-bottom Yukawa unification cannot be achieved. We also discuss the scaling of the light fermion masses and mixing angles, and show that to within current uncertainties the results of recent texture analyses performed for the minimal model also apply to the next-to-minimal model.
Allanach Ben C.
King Stephen F.
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