Discovery and Measurement of Sleptons, Binos, and Winos with a Z'

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dc.creatorBaumgart, Matthew
dc.creatorHartman, Thomas
dc.creatorKilic, Can
dc.creatorWang, Lian-Tao
dc.date2006-08-15
dc.date2007-11-27
dc.date.accessioned2026-07-07T11:05:29Z
dc.date.available2026-07-07T11:05:29Z
dc.descriptionExtensions of the MSSM could significantly alter its phenomenology at the LHC. We study the case in which the MSSM is extended by an additional U(1) gauge symmetry, which is spontaneously broken at a few TeV. The production cross-section of sleptons is enhanced over that of the MSSM by the process $pp\to Z' \to \tilde{\ell} \tilde{\ell}^*$, so the discovery potential for sleptons is greatly increased. The flavor and charge information in the resulting decay, $\tilde{\ell} \to \ell + {LSP}$, provides a useful handle on the identity of the LSP. With the help of the additional kinematical constraint of an on-shell Z', we implement a novel method to measure all of the superpartner masses involved in this channel. For certain final states with two invisible particles, one can construct kinematic observables bounded above by parent particle masses. We demonstrate how output from one such observable, m_T2, can become input to a second, increasing the number of measurements one can make with a single decay chain. The method presented here represents a new class of observables which could have a much wider range of applicability.
dc.description20 pages, 15 figures; v2 references added and minor changes
dc.identifierhttps://arxiv.org/abs/hep-ph/0608172
dc.identifierhttp://arxiv.org/abs/hep-ph/0608172
dc.identifierJHEP0711:084,2007
dc.identifierdoi:10.1088/1126-6708/2007/11/084
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/189218
dc.subjectHigh Energy Physics - Phenomenology
dc.titleDiscovery and Measurement of Sleptons, Binos, and Winos with a Z'
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