Measuring Smuon-Selectron Mass Splitting at the LHC and Patterns of Supersymmetry Breaking

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dc.creatorAllanach, B. C.
dc.creatorConlon, J. P.
dc.creatorLester, C. G.
dc.date2008-01-23
dc.date2008-03-03
dc.date.accessioned2026-07-07T11:55:29Z
dc.date.available2026-07-07T11:55:29Z
dc.descriptionWith 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.
dc.description5 pages, 5 figs. v2 has minor changes: to appear in PRD Rapid Comm
dc.identifierhttps://arxiv.org/abs/0801.3666
dc.identifierhttp://arxiv.org/abs/0801.3666
dc.identifierPhys.Rev.D77:076006,2008
dc.identifierdoi:10.1103/PhysRevD.77.076006
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/205262
dc.subjectHigh Energy Physics - Phenomenology
dc.subjectHigh Energy Physics - Experiment
dc.titleMeasuring Smuon-Selectron Mass Splitting at the LHC and Patterns of Supersymmetry Breaking
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