The impact of heavy-quark loops on LHC dark matter searches
If only tree-level processes are included in the analysis, LHC monojet searches give weak constraints on the dark matter-proton scattering cross section arising from the exchange of a new heavy scalar or pseudoscalar mediator with Yukawa-like couplings to quarks. In this letter we calculate the cons...
| Glavni autori: | , , |
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| Format: | Journal article |
| Jezik: | English |
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2012
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| _version_ | 1826256446524751872 |
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| author | Haisch, U Kahlhoefer, F Unwin, J |
| author_facet | Haisch, U Kahlhoefer, F Unwin, J |
| author_sort | Haisch, U |
| collection | OXFORD |
| description | If only tree-level processes are included in the analysis, LHC monojet searches give weak constraints on the dark matter-proton scattering cross section arising from the exchange of a new heavy scalar or pseudoscalar mediator with Yukawa-like couplings to quarks. In this letter we calculate the constraints on these interactions from the CMS 5.0/fb and ATLAS 4.7/fb searches for jets with missing energy including the effects of heavy-quark loops. We find that the inclusion of such contributions leads to a dramatic increase in the predicted cross section and therefore a significant improvement of the bounds from LHC searches. |
| first_indexed | 2024-03-06T18:02:24Z |
| format | Journal article |
| id | oxford-uuid:0040781b-d7e1-4b2d-af9c-2499b58d98cd |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-06T18:02:24Z |
| publishDate | 2012 |
| record_format | dspace |
| spelling | oxford-uuid:0040781b-d7e1-4b2d-af9c-2499b58d98cd2022-03-26T08:28:27ZThe impact of heavy-quark loops on LHC dark matter searchesJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:0040781b-d7e1-4b2d-af9c-2499b58d98cdEnglishSymplectic Elements at Oxford2012Haisch, UKahlhoefer, FUnwin, JIf only tree-level processes are included in the analysis, LHC monojet searches give weak constraints on the dark matter-proton scattering cross section arising from the exchange of a new heavy scalar or pseudoscalar mediator with Yukawa-like couplings to quarks. In this letter we calculate the constraints on these interactions from the CMS 5.0/fb and ATLAS 4.7/fb searches for jets with missing energy including the effects of heavy-quark loops. We find that the inclusion of such contributions leads to a dramatic increase in the predicted cross section and therefore a significant improvement of the bounds from LHC searches. |
| spellingShingle | Haisch, U Kahlhoefer, F Unwin, J The impact of heavy-quark loops on LHC dark matter searches |
| title | The impact of heavy-quark loops on LHC dark matter searches |
| title_full | The impact of heavy-quark loops on LHC dark matter searches |
| title_fullStr | The impact of heavy-quark loops on LHC dark matter searches |
| title_full_unstemmed | The impact of heavy-quark loops on LHC dark matter searches |
| title_short | The impact of heavy-quark loops on LHC dark matter searches |
| title_sort | impact of heavy quark loops on lhc dark matter searches |
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