Direct detection of dark matter in models with a light Z'
We discuss the direct detection signatures of dark matter interacting with nuclei via a Z' mediator, focussing on the case where both the dark matter and the $Z'$ have mass of a few GeV. Isospin violation (i.e. different couplings to protons and neutrons) arises naturally in this scenario....
| Main Authors: | , , , |
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| Format: | Journal article |
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2011
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| _version_ | 1826276201598025728 |
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| author | Frandsen, M Kahlhoefer, F Sarkar, S Schmidt-Hoberg, K |
| author_facet | Frandsen, M Kahlhoefer, F Sarkar, S Schmidt-Hoberg, K |
| author_sort | Frandsen, M |
| collection | OXFORD |
| description | We discuss the direct detection signatures of dark matter interacting with nuclei via a Z' mediator, focussing on the case where both the dark matter and the $Z'$ have mass of a few GeV. Isospin violation (i.e. different couplings to protons and neutrons) arises naturally in this scenario. In particular it is possible to reconcile the preferred parameter regions inferred from the observed DAMA and CoGeNT modulations with the bounds from XENON100, which requires f_n/f_p = -0.7. Moreover, the Z' mediator can also yield a large spin-dependent cross-section which could contribute to the DAMA signal, while the spin-independent cross-section is adequate to explain the CoGeNT signal. |
| first_indexed | 2024-03-06T23:10:28Z |
| format | Journal article |
| id | oxford-uuid:65495bf1-bc29-4791-a49e-7a59787f04e2 |
| institution | University of Oxford |
| last_indexed | 2024-03-06T23:10:28Z |
| publishDate | 2011 |
| record_format | dspace |
| spelling | oxford-uuid:65495bf1-bc29-4791-a49e-7a59787f04e22022-03-26T18:24:30ZDirect detection of dark matter in models with a light Z'Journal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:65495bf1-bc29-4791-a49e-7a59787f04e2Symplectic Elements at Oxford2011Frandsen, MKahlhoefer, FSarkar, SSchmidt-Hoberg, KWe discuss the direct detection signatures of dark matter interacting with nuclei via a Z' mediator, focussing on the case where both the dark matter and the $Z'$ have mass of a few GeV. Isospin violation (i.e. different couplings to protons and neutrons) arises naturally in this scenario. In particular it is possible to reconcile the preferred parameter regions inferred from the observed DAMA and CoGeNT modulations with the bounds from XENON100, which requires f_n/f_p = -0.7. Moreover, the Z' mediator can also yield a large spin-dependent cross-section which could contribute to the DAMA signal, while the spin-independent cross-section is adequate to explain the CoGeNT signal. |
| spellingShingle | Frandsen, M Kahlhoefer, F Sarkar, S Schmidt-Hoberg, K Direct detection of dark matter in models with a light Z' |
| title | Direct detection of dark matter in models with a light Z' |
| title_full | Direct detection of dark matter in models with a light Z' |
| title_fullStr | Direct detection of dark matter in models with a light Z' |
| title_full_unstemmed | Direct detection of dark matter in models with a light Z' |
| title_short | Direct detection of dark matter in models with a light Z' |
| title_sort | direct detection of dark matter in models with a light z |
| work_keys_str_mv | AT frandsenm directdetectionofdarkmatterinmodelswithalightz AT kahlhoeferf directdetectionofdarkmatterinmodelswithalightz AT sarkars directdetectionofdarkmatterinmodelswithalightz AT schmidthobergk directdetectionofdarkmatterinmodelswithalightz |