Solutions to the R_b, R_c and alpha_s puzzles by Vector Fermions

Details Solutions to the R_b, R_c and alpha_s puzzles by Vector Fermions Solutions to the R_b, R_c and alpha_s puzzles by Vector Fermions

1996-01-24

arxiv.org/abs/hep-ph/9601326v1

Phys.Rev.D54:7051-7056,1996

Physics

High Energy Physics

High Energy Physics - Phenomenology

12 pages, in LaTeX, postscript file also appear http://www.uic.edu/~keung/pub/rbrc.ps

Scientific paper

10.1103/PhysRevD.54.7051

We propose two minimal extensions of Standard Model, both of which can easily accommodate the recent puzzling observations about the excess in $R_b$, the deficit in $R_c$ and the discrepancy in the low energy and high energy determinations of $\alpha_{s}$. Each model requires three additional heavy vectorial fermions in order to resolve the puzzles. The current phenomenological constraints and the new potential phenomena are also discussed.

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