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arXiv · 2411.15686

New test on contact interactions in the data at $\sqrt{s}$ 130-207GeV by Bhabha scattering process $e^+e^-\to e^+e^-$

Zhikun Xi·Minghui Liu·Jürgen Ulbricht
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Abstract

We used data mainly collected by OPAL experiment to test the signal significance of a parameter $\varepsilon$, which is equal to zero in SM. For total cross sections, we obtained no derivation of enough significance. But for differential cross sections, some derivation over 3$\sigma$ are observed(statistical uncertainty only), indicating that this contact interaction might exist.

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Zhikun Xi, Minghui Liu, Jürgen Ulbricht. 2024-11-24. New test on contact interactions in the data at $\sqrt{s}$ 130-207GeV by Bhabha scattering process $e^+e^-\to e^+e^-$. https://arxiv.org/abs/2411.15686

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