Measuring Smuon-Selectron Mass Splitting at the LHC and Patterns of Supersymmetry Breaking
With sufficient data, Large Hadron Collider (LHC) experiments can constrain the selectron-smuon mass splitting through differences in the di-electron and di-muon edges from supersymmetry (SUSY) cascade decays. We study the sensitivity of the LHC to this mass splitting, which within mSUGRA may be con...
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| Format: | Journal article |
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2008
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| _version_ | 1797054942819647488 |
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| author | Allanach, B Conlon, J Lester, C |
| author_facet | Allanach, B Conlon, J Lester, C |
| author_sort | Allanach, B |
| collection | OXFORD |
| description | With sufficient data, Large Hadron Collider (LHC) experiments can constrain the selectron-smuon mass splitting through differences in the di-electron and di-muon edges from supersymmetry (SUSY) cascade decays. We study the sensitivity of the LHC to this mass splitting, which within mSUGRA may be constrained down to O(10^{-4}) for 30 fb^{-1} of integrated luminosity. Over substantial regions of SUSY breaking parameter space the fractional edge splitting can be significantly enhanced over the fractional mass splitting. Within models where the selectron and smuon are constrained to be universal at a high scale, edge splittings up to a few percent may be induced by renormalisation group effects and may be significantly discriminated from zero. The edge splitting provides important information about high-scale SUSY breaking terms and should be included in any fit of LHC data to high-scale models. |
| first_indexed | 2024-03-06T19:04:26Z |
| format | Journal article |
| id | oxford-uuid:14a54011-3b63-433b-b034-c27fd2f003e7 |
| institution | University of Oxford |
| last_indexed | 2024-03-06T19:04:26Z |
| publishDate | 2008 |
| record_format | dspace |
| spelling | oxford-uuid:14a54011-3b63-433b-b034-c27fd2f003e72022-03-26T10:20:56ZMeasuring Smuon-Selectron Mass Splitting at the LHC and Patterns of Supersymmetry BreakingJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:14a54011-3b63-433b-b034-c27fd2f003e7Symplectic Elements at Oxford2008Allanach, BConlon, JLester, CWith sufficient data, Large Hadron Collider (LHC) experiments can constrain the selectron-smuon mass splitting through differences in the di-electron and di-muon edges from supersymmetry (SUSY) cascade decays. We study the sensitivity of the LHC to this mass splitting, which within mSUGRA may be constrained down to O(10^{-4}) for 30 fb^{-1} of integrated luminosity. Over substantial regions of SUSY breaking parameter space the fractional edge splitting can be significantly enhanced over the fractional mass splitting. Within models where the selectron and smuon are constrained to be universal at a high scale, edge splittings up to a few percent may be induced by renormalisation group effects and may be significantly discriminated from zero. The edge splitting provides important information about high-scale SUSY breaking terms and should be included in any fit of LHC data to high-scale models. |
| spellingShingle | Allanach, B Conlon, J Lester, C Measuring Smuon-Selectron Mass Splitting at the LHC and Patterns of Supersymmetry Breaking |
| title | Measuring Smuon-Selectron Mass Splitting at the LHC and Patterns of
Supersymmetry Breaking |
| title_full | Measuring Smuon-Selectron Mass Splitting at the LHC and Patterns of
Supersymmetry Breaking |
| title_fullStr | Measuring Smuon-Selectron Mass Splitting at the LHC and Patterns of
Supersymmetry Breaking |
| title_full_unstemmed | Measuring Smuon-Selectron Mass Splitting at the LHC and Patterns of
Supersymmetry Breaking |
| title_short | Measuring Smuon-Selectron Mass Splitting at the LHC and Patterns of
Supersymmetry Breaking |
| title_sort | measuring smuon selectron mass splitting at the lhc and patterns of supersymmetry breaking |
| work_keys_str_mv | AT allanachb measuringsmuonselectronmasssplittingatthelhcandpatternsofsupersymmetrybreaking AT conlonj measuringsmuonselectronmasssplittingatthelhcandpatternsofsupersymmetrybreaking AT lesterc measuringsmuonselectronmasssplittingatthelhcandpatternsofsupersymmetrybreaking |