Entanglement and Bell inequalities violation in $$H\rightarrow ZZ$$ H → Z Z with anomalous coupling
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 possi...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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SpringerOpen
2023-11-01
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| Series: | European Physical Journal C: Particles and Fields |
| Online Access: | https://doi.org/10.1140/epjc/s10052-023-12216-0 |
| _version_ | 1797233413403443200 |
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| author | Alexander Bernal Paweł Caban Jakub Rembieliński |
| author_facet | Alexander Bernal Paweł Caban Jakub Rembieliński |
| author_sort | Alexander Bernal |
| collection | DOAJ |
| description | 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 the ZZ state is entangled and violates the CGLMP inequality for all values of the (anomalous) coupling constant. We also discuss the impact of a background on these results. The methods we develop are completely general, since they can be extrapolated to any scalar particle decaying into two spin-1 particles of different masses. Moreover, the violation of the CGLMP inequality in the final state is theoretically ensured for any value of the couplings. |
| first_indexed | 2024-03-10T17:10:26Z |
| format | Article |
| id | doaj.art-b0a32e958ff9446dbbdb977c0203eeb6 |
| institution | Directory Open Access Journal |
| issn | 1434-6052 |
| language | English |
| last_indexed | 2024-04-24T16:15:46Z |
| publishDate | 2023-11-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | European Physical Journal C: Particles and Fields |
| spelling | doaj.art-b0a32e958ff9446dbbdb977c0203eeb62024-03-31T11:29:49ZengSpringerOpenEuropean Physical Journal C: Particles and Fields1434-60522023-11-01831111110.1140/epjc/s10052-023-12216-0Entanglement and Bell inequalities violation in $$H\rightarrow ZZ$$ H → Z Z with anomalous couplingAlexander Bernal0Paweł Caban1Jakub Rembieliński2Instituto de Física Teórica, IFT-UAM/CSIC, Universidad Autónoma de MadridDepartment of Theoretical Physics, University of ŁódźDepartment of Theoretical Physics, University of ŁódźAbstract 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 the ZZ state is entangled and violates the CGLMP inequality for all values of the (anomalous) coupling constant. We also discuss the impact of a background on these results. The methods we develop are completely general, since they can be extrapolated to any scalar particle decaying into two spin-1 particles of different masses. Moreover, the violation of the CGLMP inequality in the final state is theoretically ensured for any value of the couplings.https://doi.org/10.1140/epjc/s10052-023-12216-0 |
| spellingShingle | Alexander Bernal Paweł Caban Jakub Rembieliński Entanglement and Bell inequalities violation in $$H\rightarrow ZZ$$ H → Z Z with anomalous coupling European Physical Journal C: Particles and Fields |
| title | Entanglement and Bell inequalities violation in $$H\rightarrow ZZ$$ H → Z Z with anomalous coupling |
| title_full | Entanglement and Bell inequalities violation in $$H\rightarrow ZZ$$ H → Z Z with anomalous coupling |
| title_fullStr | Entanglement and Bell inequalities violation in $$H\rightarrow ZZ$$ H → Z Z with anomalous coupling |
| title_full_unstemmed | Entanglement and Bell inequalities violation in $$H\rightarrow ZZ$$ H → Z Z with anomalous coupling |
| title_short | Entanglement and Bell inequalities violation in $$H\rightarrow ZZ$$ H → Z Z with anomalous coupling |
| title_sort | entanglement and bell inequalities violation in h rightarrow zz h z z with anomalous coupling |
| url | https://doi.org/10.1140/epjc/s10052-023-12216-0 |
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