Search For Supersymmetry In Trilepton Final States With The D0 Detector PDF Download
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| Author | : Marc Hohlfeld |
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| Total Pages | : 4 |
| Release | : 2006 |
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Download Search for Supersymmetry in Trilepton Final States with the D0 Detector Book in PDF, ePub and Kindle
The data taken by the D0 experiment at the proton-antiproton collider Tevatron has been used to search for signatures with two or more leptons and missing transverse energy as they are expected for the decay of pair produced Charginos and Neutralinos. No excess above the Standard Model prediction has been observed and the results have been used to set mass limits for these particles.
| Author | : Daniela Käfer |
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| Total Pages | : 248 |
| Release | : 2006 |
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Download Search for R-parity Violating Supersymmetry in Multilepton Final States with the D0 Detector Book in PDF, ePub and Kindle
| Author | : |
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| Total Pages | : 6 |
| Release | : 1994 |
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Download Search for Supersymmetric {tilde W}1 and {tilde Z}2 States Using the D0 Detector Book in PDF, ePub and Kindle
The search for signals from Supersymmetry at hadron colliders has largely been centered on the search for squark and gluino production, usually through events with large missing transverse energy (E{sub t}). A promising alternative at the Tevatron is the search for production of the lightest chargino ({tilde W}1) and next-to-lightest neutralino ({tilde Z}2), with the assumptions that R-parity is conserved and the lightest neutralino ({tilde Z}1) is the lightest supersymmetric particle (LSP). Although the mass limit established by LEP experiments, 2M{sub {tilde W}1}>45 GeV/c2, excludes the on-shell process {anti p}p 2!W{sup {+-}} 2!{tilde W}1 + {tilde Z}2, the off-shell process W{sup {+-}} 2!{tilde W}1{tilde Z}2 can have a sizeable rate due to large WW{tilde W}1{tilde Z}2 coupling. Here, the status of a search for the pair production of the lightest chargino and second lightest neutralino states of the minimal supersymmetric model is presented. The authors searched for four tri-lepton final states: eee, ee[mu], e[mu][mu], and [mu][mu][mu], all with missing transverse energy.
| Author | : Jason Dhia Mansour |
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| Total Pages | : |
| Release | : 2015 |
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Download Search for Supersymmetry in Trilepton Final States with the DØ Experiment Book in PDF, ePub and Kindle
| Author | : |
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| Total Pages | : 134 |
| Release | : 2004 |
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Download Search for Evidence of Supersymmetry in the Like-sign Dimuon Channel at the D0 Experiment Book in PDF, ePub and Kindle
Supersymmetry (SUSY) is a proposed symmetry between fermions and bosons. If this symmetry does exist, it is clearly broken since only half of the particle spectrum is observed. One model which provides a simple breaking mechanism is called minimal supergravity (mSUGRA) inspired SUSY. One clean final state predicted by this model is a trilepton final state from chargino and neutralino decays. In this analysis, these events are sought in 239±16 pb-1 of D0 Run II data by requiring like-sign dimuon pairs. Requiring only two muons increases the signal acceptance, and adding the like-sign requirement reduces the Standard Model background from Drell-Yan dimuon pairs and the various resonances in the dimuon spectrum. The reach into some parts of mSUGRA parameter space will be greater when searching with the like-sign dilepton final state than the trilepton final state. Combining results from a search in the like-sign dilepton channels with searches in the trilepton channels provides increased sensitivity in the search for supersymmetry. In this dissertation, the best-ever D limit on the total cross section for associated chargino and neutralino production with leptonic final states is presented.
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| Release | : 2005 |
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Download Search for Supersymmetric [tilde W][sub 1] and [tilde Z][sub 2] States Using the D0 Detector Book in PDF, ePub and Kindle
The search for signals from Supersymmetry at hadron colliders has largely been centered on the search for squark and gluino production, usually through events with large missing transverse energy (E[sub t]). A promising alternative at the Tevatron is the search for production of the lightest chargino ([tilde W][sub 1]) and next-to-lightest neutralino ([tilde Z][sub 2]), with the assumptions that R-parity is conserved and the lightest neutralino ([tilde Z][sub 1]) is the lightest supersymmetric particle (LSP). Although the mass limit established by LEP experiments, [sup 2]M[sub [tilde W]1]>45 GeV/c[sup 2], excludes the on-shell process [anti p]p [yields] W[sup [+-]] [yields] [tilde W][sub 1] + [tilde Z][sub 2], the off-shell process W[sup [+-]] [yields] [tilde W][sub 1][tilde Z][sub 2] can have a sizeable rate due to large WW[tilde W][sub 1][tilde Z][sub 2] coupling. Here, the status of a search for the pair production of the lightest chargino and second lightest neutralino states of the minimal supersymmetric model is presented. The authors searched for four tri-lepton final states: eee, ee[mu], e[mu][mu], and [mu][mu][mu], all with missing transverse energy.
| Author | : |
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| Total Pages | : 175 |
| Release | : 2013 |
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Download Search for Supersymmetry in Final States with Leptons with the ATLAS Detector at the Large Hadron Collider Book in PDF, ePub and Kindle
After a short review of the Standard Model of Elementary Particle Physics and its minimal supersymmetric extension, the MSSM, a global analysis of two highly simplified supersymmetric models, the CMSSM and the NUHM1 is presented, with a focus on the fine-tuning of these models. A new, phenomenologically motivated measure for fine-tuning is introduced. In addition, a search for supersymmetry in final states with four leptons is presented, where a procedure for the consideration of trigger efficiencies with a focus on the calculation of uncertainties on the sum of event weights is given. Fina...
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| Total Pages | : 8 |
| Release | : 2007 |
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Download Search for Supersymmetry in Di-photon Final States at $\sqrt{s}$ Book in PDF, ePub and Kindle
We report results of a search for supersymmetry (SUSY) with gauge-mediated symmetry breaking in di-photon events collected by the D0 experiment at the Fermilab Tevatron Collider in 2002-2006. In 1.1 fb-1 of data, we find no significant excess beyond the background expected from the standard model and set the most stringent lower limits to date for a standard benchmark model on the lightestneutralino and chargino masses of 125 GeV and 229 GeV, respectively, at 95% confidence.
| Author | : Stephan Horner |
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| Release | : 2011 |
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Download Search for Supersymmetry in Single-lepton Final States with the ATLAS Detector and Improved Background Model for the Search of New Physics Book in PDF, ePub and Kindle
Zusammenfassung: Diese Dissertation präsentiert den Beitrag des Autors zur Suche nach supersymmetrischen Teilchen in Endzuständen mit genau einem hochenergetischen Lepton, verursacht durch Proton-Proton-Kollision am ATLAS-Experiment des Large Hadron Colliders. Darüberhinaus wird eine neue Methode zur Verbesserung der Untergrundmodelle in einer Suche nach neuer Physik vorgestellt
| Author | : Itzebelt Santoyo Castillo |
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| Release | : 2015 |
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Download Search for Supersymmetry in Final States with Three Leptons and Missing Transverse Energy with the ATLAS Detector at the Large Hadron Collider Book in PDF, ePub and Kindle
