Detection of SUSY Signals in Stau Neutralino Co-annihilation Region at the LHC

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dc.creatorArnowitt, R.
dc.creatorAurisano, A.
dc.creatorDutta, B.
dc.creatorKamon, T.
dc.creatorKolev, N.
dc.creatorSimeon, P.
dc.creatorToback, D.
dc.creatorWagner, P.
dc.date2006-11-07
dc.date2006-11-09
dc.date.accessioned2026-07-07T11:43:41Z
dc.date.available2026-07-07T11:43:41Z
dc.descriptionWe study the prospects of detecting the signal in the stau neutralino co-annihilation region at the LHC using tau leptons. The co-annihilation signal is characterized by the stau and neutralino mass difference (dM) to be 5-15 GeV to be consistent with the WMAP measurement of the cold dark matter relic density as well as all other experimental bounds within the minimal supergravity model. Focusing on tau's from neutralino_2 --> tau stau --> tau tau neutralino_1 decays in gluino and squark production, we consider inclusive MET+jet+3tau production, with two tau's above a high E_T threshold and a third tau above a lower threshold. Two observables, the number of opposite-signed tau pairs minus the number of like-signed tau pairs and the peak position of the di-tau invariant mass distribution, allow for the simultaneous determination of dM and M_gluino. For dM = 9 GeV and M_gluino = 850 GeV with 30 fb^-1 of data, we can measure dM to 15% and M_gluino to 6%.
dc.description4 pages LaTex, 3 figures. To appear in Proceedings of SUSY06, the 14th International Conference on Supersymmetry and the Unification of Fundamental Interactions, UC Irvine, California, 12-17 June 2006. A typo in a reference is corrected
dc.identifierhttps://arxiv.org/abs/hep-ph/0611089
dc.identifierhttp://arxiv.org/abs/hep-ph/0611089
dc.identifierAIPConf.Proc.903:229-232,2007
dc.identifierdoi:10.1063/1.2735167
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/201332
dc.subjectHigh Energy Physics - Phenomenology
dc.titleDetection of SUSY Signals in Stau Neutralino Co-annihilation Region at the LHC
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