Semi-visible jets + X: illuminating dark showers with radiation
Abstract We investigate the potential to search for semi-visible jets (SVJs) at the Large Hadron Collider (LHC) using initial-state radiation (ISR). Both photon ISR and jet ISR channels are considered, using a benchmark signal model with the decay of a leptophobic Z ′ mediator forming two SVJs. We c...
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| Format: | Article |
| Language: | English |
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SpringerOpen
2024-12-01
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| Series: | Journal of High Energy Physics |
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| Online Access: | https://doi.org/10.1007/JHEP12(2024)105 |
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| author | Bingxuan Liu Kevin Pedro |
| author_facet | Bingxuan Liu Kevin Pedro |
| author_sort | Bingxuan Liu |
| collection | DOAJ |
| description | Abstract We investigate the potential to search for semi-visible jets (SVJs) at the Large Hadron Collider (LHC) using initial-state radiation (ISR). Both photon ISR and jet ISR channels are considered, using a benchmark signal model with the decay of a leptophobic Z ′ mediator forming two SVJs. We compare and extend several techniques to decompose the missing transverse momentum into per-jet contributions, in order to reconstruct the mediator mass and to define a new observable measuring the fraction of invisible dark hadrons. The presence of ISR facilitates the identification of the SVJs, and the resulting boost improves the resolution of the observables, especially for models with high invisible fractions. We combine the two observables to propose a complete search strategy and discuss an extension of the strategy to probe the whole model parameter space. |
| format | Article |
| id | doaj-art-5bc0e2b457ba4ed9943b69d95d5bee2c |
| institution | Kabale University |
| issn | 1029-8479 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Journal of High Energy Physics |
| spelling | doaj-art-5bc0e2b457ba4ed9943b69d95d5bee2c2025-02-02T12:06:13ZengSpringerOpenJournal of High Energy Physics1029-84792024-12-0120241212210.1007/JHEP12(2024)105Semi-visible jets + X: illuminating dark showers with radiationBingxuan Liu0Kevin Pedro1School of Science, Sun Yat-sen University, Shenzhen CampusFermi National Accelerator LaboratoryAbstract We investigate the potential to search for semi-visible jets (SVJs) at the Large Hadron Collider (LHC) using initial-state radiation (ISR). Both photon ISR and jet ISR channels are considered, using a benchmark signal model with the decay of a leptophobic Z ′ mediator forming two SVJs. We compare and extend several techniques to decompose the missing transverse momentum into per-jet contributions, in order to reconstruct the mediator mass and to define a new observable measuring the fraction of invisible dark hadrons. The presence of ISR facilitates the identification of the SVJs, and the resulting boost improves the resolution of the observables, especially for models with high invisible fractions. We combine the two observables to propose a complete search strategy and discuss an extension of the strategy to probe the whole model parameter space.https://doi.org/10.1007/JHEP12(2024)105Dark Matter at CollidersJets and Jet Substructure |
| spellingShingle | Bingxuan Liu Kevin Pedro Semi-visible jets + X: illuminating dark showers with radiation Journal of High Energy Physics Dark Matter at Colliders Jets and Jet Substructure |
| title | Semi-visible jets + X: illuminating dark showers with radiation |
| title_full | Semi-visible jets + X: illuminating dark showers with radiation |
| title_fullStr | Semi-visible jets + X: illuminating dark showers with radiation |
| title_full_unstemmed | Semi-visible jets + X: illuminating dark showers with radiation |
| title_short | Semi-visible jets + X: illuminating dark showers with radiation |
| title_sort | semi visible jets x illuminating dark showers with radiation |
| topic | Dark Matter at Colliders Jets and Jet Substructure |
| url | https://doi.org/10.1007/JHEP12(2024)105 |
| work_keys_str_mv | AT bingxuanliu semivisiblejetsxilluminatingdarkshowerswithradiation AT kevinpedro semivisiblejetsxilluminatingdarkshowerswithradiation |