From angular coefficients to quantum observables: a phenomenological appraisal in di-boson systems
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| Format: | Preprint |
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2024
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| _version_ | 1866910778555105280 |
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| author | Grossi, Michele Pelliccioli, Giovanni Vicini, Alessandro |
| author_facet | Grossi, Michele Pelliccioli, Giovanni Vicini, Alessandro |
| contents | Motivated by the growing interest in accessing the spin structure of multi-boson processes and in measuring quantum entanglement at high energies, we study polarisation and spin-correlation coefficients in di-boson systems. We show that higher-order corrections of QCD and electroweak type, off-shell modelling, and realistic effects such as fiducial selections and neutrino reconstruction are unavoidable to properly determine such coefficients, and consequently to provide a sound interpretation of observables sensitive to quantum entanglement and Bell-inequality violation. Our findings are based on a detailed phenomenological analysis of boson pairs at the LHC, either in inclusive electroweak production or coming from Higgs-boson decays. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2409_16731 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | From angular coefficients to quantum observables: a phenomenological appraisal in di-boson systems Grossi, Michele Pelliccioli, Giovanni Vicini, Alessandro High Energy Physics - Phenomenology High Energy Physics - Experiment Quantum Physics Motivated by the growing interest in accessing the spin structure of multi-boson processes and in measuring quantum entanglement at high energies, we study polarisation and spin-correlation coefficients in di-boson systems. We show that higher-order corrections of QCD and electroweak type, off-shell modelling, and realistic effects such as fiducial selections and neutrino reconstruction are unavoidable to properly determine such coefficients, and consequently to provide a sound interpretation of observables sensitive to quantum entanglement and Bell-inequality violation. Our findings are based on a detailed phenomenological analysis of boson pairs at the LHC, either in inclusive electroweak production or coming from Higgs-boson decays. |
| title | From angular coefficients to quantum observables: a phenomenological appraisal in di-boson systems |
| topic | High Energy Physics - Phenomenology High Energy Physics - Experiment Quantum Physics |
| url | https://arxiv.org/abs/2409.16731 |