Jet substructure probe to unfold singlet-doublet dark matter in the presence of non-standard cosmology
Abstract We examine the singlet-doublet fermionic dark matter model, where the non-thermal production of the dark matter in light of a non-standard cosmology demands a significantly large interaction rate than the typical radiation-dominated Universe. Despite being a model of freeze-in light dark ma...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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SpringerOpen
2023-06-01
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| Series: | Journal of High Energy Physics |
| Subjects: | |
| Online Access: | https://doi.org/10.1007/JHEP06(2023)198 |
| _version_ | 1827808204485033984 |
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| author | Prasanta Kumar Das Partha Konar Saumyen Kundu Sudipta Show |
| author_facet | Prasanta Kumar Das Partha Konar Saumyen Kundu Sudipta Show |
| author_sort | Prasanta Kumar Das |
| collection | DOAJ |
| description | Abstract We examine the singlet-doublet fermionic dark matter model, where the non-thermal production of the dark matter in light of a non-standard cosmology demands a significantly large interaction rate than the typical radiation-dominated Universe. Despite being a model of freeze-in light dark matter and heavy mediator, the characteristic long-lived particle searches at the collider experiment and the displaced vertex signature do not help in probing such a dark sector since this non-standard interaction mandates nearly prompt decay. We make a counterproposal to probe such signal with di-fat-jets generated from the boosted decays of massive vector bosons and Standard Model Higgs, along with the substantial missing transverse momentum to probe the dark matter at LHC. Interestingly, substructure variables associated with these fat jets have an additional handle to tackle the extensive QCD background as it encodes implicit footmarks of their origin. We adopt the multivariate analysis with the booted decision tree to constrain the measured relic density allowed parameter space of dark matter in the presence of the modified cosmological scenario. Our study shows how the non-trivial expansion affects dark matter production in the early Universe and alters the required search strategies at colliders. This probe provides the best discovery prospect at the HL-LHC for extended parameter space now opened up in the dark sector. |
| first_indexed | 2024-03-11T22:20:39Z |
| format | Article |
| id | doaj.art-2ac2c5903fbc4defa253494b84e8449e |
| institution | Directory Open Access Journal |
| issn | 1029-8479 |
| language | English |
| last_indexed | 2024-03-11T22:20:39Z |
| publishDate | 2023-06-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Journal of High Energy Physics |
| spelling | doaj.art-2ac2c5903fbc4defa253494b84e8449e2023-09-24T11:05:49ZengSpringerOpenJournal of High Energy Physics1029-84792023-06-012023612410.1007/JHEP06(2023)198Jet substructure probe to unfold singlet-doublet dark matter in the presence of non-standard cosmologyPrasanta Kumar Das0Partha Konar1Saumyen Kundu2Sudipta Show3Department of Physics, Birla Institute of Technology and Science-PilaniTheoretical Physics Division, Physical Research LaboratoryDepartment of Physics, Birla Institute of Technology and Science-PilaniTheoretical Physics Division, Physical Research LaboratoryAbstract We examine the singlet-doublet fermionic dark matter model, where the non-thermal production of the dark matter in light of a non-standard cosmology demands a significantly large interaction rate than the typical radiation-dominated Universe. Despite being a model of freeze-in light dark matter and heavy mediator, the characteristic long-lived particle searches at the collider experiment and the displaced vertex signature do not help in probing such a dark sector since this non-standard interaction mandates nearly prompt decay. We make a counterproposal to probe such signal with di-fat-jets generated from the boosted decays of massive vector bosons and Standard Model Higgs, along with the substantial missing transverse momentum to probe the dark matter at LHC. Interestingly, substructure variables associated with these fat jets have an additional handle to tackle the extensive QCD background as it encodes implicit footmarks of their origin. We adopt the multivariate analysis with the booted decision tree to constrain the measured relic density allowed parameter space of dark matter in the presence of the modified cosmological scenario. Our study shows how the non-trivial expansion affects dark matter production in the early Universe and alters the required search strategies at colliders. This probe provides the best discovery prospect at the HL-LHC for extended parameter space now opened up in the dark sector.https://doi.org/10.1007/JHEP06(2023)198Dark Matter at CollidersEarly Universe Particle PhysicsJets and Jet SubstructureModels for Dark Matter |
| spellingShingle | Prasanta Kumar Das Partha Konar Saumyen Kundu Sudipta Show Jet substructure probe to unfold singlet-doublet dark matter in the presence of non-standard cosmology Journal of High Energy Physics Dark Matter at Colliders Early Universe Particle Physics Jets and Jet Substructure Models for Dark Matter |
| title | Jet substructure probe to unfold singlet-doublet dark matter in the presence of non-standard cosmology |
| title_full | Jet substructure probe to unfold singlet-doublet dark matter in the presence of non-standard cosmology |
| title_fullStr | Jet substructure probe to unfold singlet-doublet dark matter in the presence of non-standard cosmology |
| title_full_unstemmed | Jet substructure probe to unfold singlet-doublet dark matter in the presence of non-standard cosmology |
| title_short | Jet substructure probe to unfold singlet-doublet dark matter in the presence of non-standard cosmology |
| title_sort | jet substructure probe to unfold singlet doublet dark matter in the presence of non standard cosmology |
| topic | Dark Matter at Colliders Early Universe Particle Physics Jets and Jet Substructure Models for Dark Matter |
| url | https://doi.org/10.1007/JHEP06(2023)198 |
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