Model independent constraints on contact interactions from LEP2

Details Model independent constraints on contact interactions from LEP2 Model independent constraints on contact interactions from LEP2

2000-09-11

arxiv.org/abs/hep-ph/0009117v1

Phys.Lett.B493:307-314,2000

Physics

High Energy Physics

High Energy Physics - Phenomenology

9 pages (Latex) with 6 figures and 1 table

Scientific paper

10.1016/S0370-2693(00)01106-0

We quantitatively discuss the possibility of deriving model-independent constraints on the general four-fermion contact interaction couplings, from the currently available data on the two-fermion production processes $e^+e^-\to\mu^+\mu^-$, $b\bar{b}$ and $c\bar{c}$ with unpolarized initial beams. The method is essentially based on particular, simple, combinations of the measured total cross section and forward-backward asymmetry that allow partial separation of the helicity cross sections, and the combination of experimental data obtained at the different energies of TRISTAN, LEP1 and LEP2.

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