From angular coefficients to quantum observables: a phenomenological appraisal in di-boson systems
| Title: | From angular coefficients to quantum observables: a phenomenological appraisal in di-boson systems |
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| Authors: | Grossi, Michele, Pelliccioli, Giovanni, Vicini, Alessandro |
| Publication Year: | 2024 |
| Collection: | High Energy Physics - Experiment High Energy Physics - Phenomenology Quantum Physics |
| Subject Terms: | High Energy Physics - Phenomenology, High Energy Physics - Experiment, Quantum Physics |
| More Details: | 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. |
| Document Type: | Working Paper |
| DOI: | 10.1007/JHEP12(2024)120 |
| Access URL: | http://arxiv.org/abs/2409.16731 |
| Accession Number: | edsarx.2409.16731 |
| Database: | arXiv |
| DOI: | 10.1007/JHEP12(2024)120 |
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