$α_s(M_Z^2)$ and $R_b$ discrepancy with nonuniversal interactions

Details $α_s(M_Z^2)$ and $R_b$ discrepancy with nonuniversal interactions $α_s(M_Z^2)$ and $R_b$ discrepancy with nonuniversal interactions

1995-09-18

arxiv.org/abs/hep-ph/9509319v1

Phys.Rev. D53 (1996) 1712-1714

Physics

High Energy Physics

High Energy Physics - Phenomenology

9 pages, ReVTeX, 1 table and 1 figure

Scientific paper

10.1103/PhysRevD.53.1712

We implement global fits to LEP data with the \non interactions. Consistent $R_b$ with experimental value and consistent $\as(M_Z^2)$ with that from low energy experiments are obtained. We also find that the $\xx$ is better than the Standard Model. And we argue that other kinds of new physics are needed to explain the difference between the values of $\as(M_Z^2)$ from low energy experiments and from the 3-jet ratio.

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