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arXiv · 2307.13496

Entanglement and Bell inequalities violation in $H\to ZZ$ with anomalous coupling

Alexander Bernal·Paweł Caban·Jakub Rembieliński
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Abstract

We discuss entanglement and violation of Bell-type inequalities for a system of two $Z$ bosons produced in Higgs decays. We take into account beyond the Standard Model (anomalous) coupling between $H$ and daughter bosons but we limit ourselves to an overall scalar $ZZ$ state (we exclude the possibility that $H$ contains a pseudo-scalar component). In particular we consider the case when each $Z$ decays further into fermion-antifermion pair. We find that a $ZZ$ state is entangled and violates the CGLMP inequality for all values of the (anomalous) coupling constant.

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Alexander Bernal, Paweł Caban, Jakub Rembieliński. 2023-07-25. Entanglement and Bell inequalities violation in $H\to ZZ$ with anomalous coupling. https://doi.org/10.1140/epjc%2Fs10052-023-12216-0

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