Quantum contextuality of spin-1 massive particles
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arXiv
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| Main Authors: | , , , |
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| Format: | Preprint |
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2025
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| _version_ | 1866913744516284416 |
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| author | Fabbrichesi, M. Floreanini, R. Gabrielli, E. Marzola, L. |
| author_facet | Fabbrichesi, M. Floreanini, R. Gabrielli, E. Marzola, L. |
| contents | Contextuality is a fundamental property of quantum mechanics. Contrary to entanglement, which can only exist in composite systems, contextuality is also present for single entities. The case of a three-level system is of particular interest because--in agreement with the Bell-Kochen-Specker theorem--it is the simplest in which quantum contextuality is necessarily present. We verify that the polarizations of spin-1 massive particles produced at collider experiments indeed exhibit contextuality. To this purpose we consider $W$ gauge bosons produced in top-quark decays, $J/ψ$ and $K^{*}(892)^0$ mesons created in $B$-meson decays and $ϕ$ mesons resulting from $χ^0_c$ charmonium decays, making use of the data collected and analyzed by the ATLAS, LHCb and BESIII collaborations, respectively. The polarizations of all these four particles show contextuality with a significance of more than $5σ$. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2503_14587 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Quantum contextuality of spin-1 massive particles Fabbrichesi, M. Floreanini, R. Gabrielli, E. Marzola, L. High Energy Physics - Phenomenology High Energy Physics - Experiment Quantum Physics Contextuality is a fundamental property of quantum mechanics. Contrary to entanglement, which can only exist in composite systems, contextuality is also present for single entities. The case of a three-level system is of particular interest because--in agreement with the Bell-Kochen-Specker theorem--it is the simplest in which quantum contextuality is necessarily present. We verify that the polarizations of spin-1 massive particles produced at collider experiments indeed exhibit contextuality. To this purpose we consider $W$ gauge bosons produced in top-quark decays, $J/ψ$ and $K^{*}(892)^0$ mesons created in $B$-meson decays and $ϕ$ mesons resulting from $χ^0_c$ charmonium decays, making use of the data collected and analyzed by the ATLAS, LHCb and BESIII collaborations, respectively. The polarizations of all these four particles show contextuality with a significance of more than $5σ$. |
| title | Quantum contextuality of spin-1 massive particles |
| topic | High Energy Physics - Phenomenology High Energy Physics - Experiment Quantum Physics |
| url | https://arxiv.org/abs/2503.14587 |