Amplitude-assisted tagging of longitudinally polarised bosons using wide neural networks
Abstract Extracting longitudinal modes of weak bosons in LHC processes is essential to understand the electroweak-symmetry-breaking mechanism. To that end, we propose a general method, based on wide neural networks, to properly model longitudinal-boson signals and hence enable the event-by-event tag...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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SpringerOpen
2023-08-01
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| Series: | European Physical Journal C: Particles and Fields |
| Online Access: | https://doi.org/10.1140/epjc/s10052-023-11931-y |
| _version_ | 1797682603687411712 |
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| author | Michele Grossi Massimiliano Incudini Mathieu Pellen Giovanni Pelliccioli |
| author_facet | Michele Grossi Massimiliano Incudini Mathieu Pellen Giovanni Pelliccioli |
| author_sort | Michele Grossi |
| collection | DOAJ |
| description | Abstract Extracting longitudinal modes of weak bosons in LHC processes is essential to understand the electroweak-symmetry-breaking mechanism. To that end, we propose a general method, based on wide neural networks, to properly model longitudinal-boson signals and hence enable the event-by-event tagging of longitudinal bosons. It combines experimentally accessible kinematic information and genuine theoretical inputs provided by amplitudes in perturbation theory. As an application we consider the production of a Z boson in association with a jet at the LHC, both at leading order and in the presence of parton-shower effects. The devised neural networks are able to extract reliably the longitudinal contribution to the unpolarised process. The proposed method is very general and can be systematically extended to other processes and problems. |
| first_indexed | 2024-03-12T00:02:13Z |
| format | Article |
| id | doaj.art-77b3ef6328414d0e9d9f76d2bfb769b7 |
| institution | Directory Open Access Journal |
| issn | 1434-6052 |
| language | English |
| last_indexed | 2024-03-12T00:02:13Z |
| publishDate | 2023-08-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | European Physical Journal C: Particles and Fields |
| spelling | doaj.art-77b3ef6328414d0e9d9f76d2bfb769b72023-09-17T11:25:33ZengSpringerOpenEuropean Physical Journal C: Particles and Fields1434-60522023-08-0183811910.1140/epjc/s10052-023-11931-yAmplitude-assisted tagging of longitudinally polarised bosons using wide neural networksMichele Grossi0Massimiliano Incudini1Mathieu Pellen2Giovanni Pelliccioli3European Organisation for Nuclear Research (CERN)Department of Computer Science, University of VeronaPhysikalisches Institut, Universität FreiburgMax-Planck-Institut für PhysikAbstract Extracting longitudinal modes of weak bosons in LHC processes is essential to understand the electroweak-symmetry-breaking mechanism. To that end, we propose a general method, based on wide neural networks, to properly model longitudinal-boson signals and hence enable the event-by-event tagging of longitudinal bosons. It combines experimentally accessible kinematic information and genuine theoretical inputs provided by amplitudes in perturbation theory. As an application we consider the production of a Z boson in association with a jet at the LHC, both at leading order and in the presence of parton-shower effects. The devised neural networks are able to extract reliably the longitudinal contribution to the unpolarised process. The proposed method is very general and can be systematically extended to other processes and problems.https://doi.org/10.1140/epjc/s10052-023-11931-y |
| spellingShingle | Michele Grossi Massimiliano Incudini Mathieu Pellen Giovanni Pelliccioli Amplitude-assisted tagging of longitudinally polarised bosons using wide neural networks European Physical Journal C: Particles and Fields |
| title | Amplitude-assisted tagging of longitudinally polarised bosons using wide neural networks |
| title_full | Amplitude-assisted tagging of longitudinally polarised bosons using wide neural networks |
| title_fullStr | Amplitude-assisted tagging of longitudinally polarised bosons using wide neural networks |
| title_full_unstemmed | Amplitude-assisted tagging of longitudinally polarised bosons using wide neural networks |
| title_short | Amplitude-assisted tagging of longitudinally polarised bosons using wide neural networks |
| title_sort | amplitude assisted tagging of longitudinally polarised bosons using wide neural networks |
| url | https://doi.org/10.1140/epjc/s10052-023-11931-y |
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