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arXiv · hep-ph/0009117

Model independent constraints on contact interactions from LEP2

A. A. Pankov·N. Paver
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Abstract

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 $e^+e^-\toμ^+μ^-$, $b\bar{b}$ 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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A. A. Pankov, N. Paver. 2000-09-11. Model independent constraints on contact interactions from LEP2. https://doi.org/10.1016/s0370-2693(00)01106-0

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