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arXiv · 2403.13942

Tripartite entanglement in $H \to ZZ,WW$ decays

J. A. Aguilar-Saavedra
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Abstract

The decays of the Higgs boson produce a state in which the spins of the decay products and the orbital angular momentum ($L$) are highly entangled. We obtain the tripartite density operator, as well as reduced operators, for the decay into two weak bosons. For $H \to ZZ$ in the four-lepton final state we also estimate the statistical sensitivity at the Large Hadron Collider and future upgrades, using a binned method to reconstruct the density operators from distributions. With the expected Run 3 data, establishing genuine tripartite entanglement would be possible beyond the $5\sigma$ level. The violation of Bell inequalities involving the spins of the two weak bosons could also be established beyond the $5\sigma$ level.

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J. A. Aguilar-Saavedra. 2024-03-20. Tripartite entanglement in $H \to ZZ,WW$ decays. https://arxiv.org/abs/2403.13942

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