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| Format: | Preprint |
| Veröffentlicht: |
2025
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| Online-Zugang: | https://arxiv.org/abs/2502.03219 |
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| _version_ | 1866912245216182272 |
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| author | Varma, Mira Baker, Oliver K. |
| author_facet | Varma, Mira Baker, Oliver K. |
| contents | We investigate quantum correlations in Higgs-boson decays $\bigl(H \rightarrow ZZ^* \rightarrow 2e\,2μ\bigr)$ using CMS open data at $\sqrt{s}$ = 8 TeV, incorporating realistic detector effects. By reconstructing the polarization density matrix of the two-boson system and evaluating the Collins-Gisin-Linden-Massar-Popescu (CGLMP) Bell operator $I_3$, we quantify entanglement in the $ZZ$ state. Our analysis yields an $I_3$ value of $2.152 \pm 0.003$ for signal events $\bigl(H \rightarrow ZZ^*\bigr)$, indicating the presence of quantum entanglement. The non-resonant continuum background events $\bigl(pp \rightarrow ZZ\bigr)$ yield $I_3 = 1.158 \pm 0.012$, suggesting the absence of quantum correlations. These results demonstrate the feasibility of testing fundamental quantum mechanics at high energy colliders. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2502_03219 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Bell Inequalities and Quantum Correlations in $H \rightarrow ZZ \rightarrow 2e\,2μ$ Varma, Mira Baker, Oliver K. High Energy Physics - Phenomenology We investigate quantum correlations in Higgs-boson decays $\bigl(H \rightarrow ZZ^* \rightarrow 2e\,2μ\bigr)$ using CMS open data at $\sqrt{s}$ = 8 TeV, incorporating realistic detector effects. By reconstructing the polarization density matrix of the two-boson system and evaluating the Collins-Gisin-Linden-Massar-Popescu (CGLMP) Bell operator $I_3$, we quantify entanglement in the $ZZ$ state. Our analysis yields an $I_3$ value of $2.152 \pm 0.003$ for signal events $\bigl(H \rightarrow ZZ^*\bigr)$, indicating the presence of quantum entanglement. The non-resonant continuum background events $\bigl(pp \rightarrow ZZ\bigr)$ yield $I_3 = 1.158 \pm 0.012$, suggesting the absence of quantum correlations. These results demonstrate the feasibility of testing fundamental quantum mechanics at high energy colliders. |
| title | Bell Inequalities and Quantum Correlations in $H \rightarrow ZZ \rightarrow 2e\,2μ$ |
| topic | High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2502.03219 |