SMEFT effects on spin correlations and entanglement at NLO QCD in di-boson production at hadron colliders
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arXiv
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| Natura: | Preprint |
| Pubblicazione: |
2026
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| _version_ | 1866911376235036672 |
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| author | Pelliccioli, Giovanni Re, Emanuele |
| author_facet | Pelliccioli, Giovanni Re, Emanuele |
| contents | We perform for the first time a full study of spin correlations in inclusive WZ production at the LHC with leptonic decays in the presence of NLO QCD corrections and of effects from a dimension-six operator in the SMEFT modifying the electroweak triple-gauge coupling. We carry out the complete quantum-state tomography of the di-boson system and relate its results to common purity and spin-entanglement markers, highlighting the sizeable impact of both QCD corrections and SMEFT insertions. Additionally, we show how a naive truncation at dimension-six in the SMEFT expansion of the spin-density matrix can lead to a cumbersome spin interpretation of the quantum-tomography results. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2601_09540 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | SMEFT effects on spin correlations and entanglement at NLO QCD in di-boson production at hadron colliders Pelliccioli, Giovanni Re, Emanuele High Energy Physics - Phenomenology High Energy Physics - Experiment We perform for the first time a full study of spin correlations in inclusive WZ production at the LHC with leptonic decays in the presence of NLO QCD corrections and of effects from a dimension-six operator in the SMEFT modifying the electroweak triple-gauge coupling. We carry out the complete quantum-state tomography of the di-boson system and relate its results to common purity and spin-entanglement markers, highlighting the sizeable impact of both QCD corrections and SMEFT insertions. Additionally, we show how a naive truncation at dimension-six in the SMEFT expansion of the spin-density matrix can lead to a cumbersome spin interpretation of the quantum-tomography results. |
| title | SMEFT effects on spin correlations and entanglement at NLO QCD in di-boson production at hadron colliders |
| topic | High Energy Physics - Phenomenology High Energy Physics - Experiment |
| url | https://arxiv.org/abs/2601.09540 |