Radiation effects on the entanglement of fermion pairs at colliders
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arXiv
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| Autori principali: | , , , , , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2026
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| _version_ | 1866917416335835136 |
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| author | Aoude, Rafael Camacho, José Manuel Durupt, Valentin García-Mir, Guillermo Maltoni, Fabio Llácer, María Moreno Satrioni, Leonardo Vos, Marcel |
| author_facet | Aoude, Rafael Camacho, José Manuel Durupt, Valentin García-Mir, Guillermo Maltoni, Fabio Llácer, María Moreno Satrioni, Leonardo Vos, Marcel |
| contents | We study the impact of radiation on quantum systems defined by the spins of elementary fermion-antifermion pairs produced at colliders. We present predictions for several processes, showing that energetic final-state radiation can induce decoherence and significantly reduce the entanglement of quantum systems formed by elementary fermion pairs. We investigate the feasibility of observing this effect experimentally in exclusive samples with energetic radiation. A statistically significant signal can be obtained with current data in associated $pp \rightarrow t\bar{t}(g)$ production at the LHC and in $e^+e^- \rightarrow τ^{+}τ^{-}(γ)$ production at Belle 2. Future electron-positron colliders operated at the $Z$ pole or well above the $t\bar{t}$ production threshold will extend these prospects further. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2604_16268 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Radiation effects on the entanglement of fermion pairs at colliders Aoude, Rafael Camacho, José Manuel Durupt, Valentin García-Mir, Guillermo Maltoni, Fabio Llácer, María Moreno Satrioni, Leonardo Vos, Marcel High Energy Physics - Phenomenology High Energy Physics - Experiment High Energy Physics - Theory We study the impact of radiation on quantum systems defined by the spins of elementary fermion-antifermion pairs produced at colliders. We present predictions for several processes, showing that energetic final-state radiation can induce decoherence and significantly reduce the entanglement of quantum systems formed by elementary fermion pairs. We investigate the feasibility of observing this effect experimentally in exclusive samples with energetic radiation. A statistically significant signal can be obtained with current data in associated $pp \rightarrow t\bar{t}(g)$ production at the LHC and in $e^+e^- \rightarrow τ^{+}τ^{-}(γ)$ production at Belle 2. Future electron-positron colliders operated at the $Z$ pole or well above the $t\bar{t}$ production threshold will extend these prospects further. |
| title | Radiation effects on the entanglement of fermion pairs at colliders |
| topic | High Energy Physics - Phenomenology High Energy Physics - Experiment High Energy Physics - Theory |
| url | https://arxiv.org/abs/2604.16268 |