Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 7 of 7 for “"supersymmetry breaking"”.
-
Duality and Models of Supersymmetry Breaking
… in particle physics at the TeV scale, supersymmetry can only be present as a broken symmetry. In this thesis we explore various situations in which duality can continue be important when supersymmetry is broken spontaneously, or even explicitly. We first focus on the AdS/CFT …
-
Supersymmetry Breaking: Models of Gauge Mediation with Gauge Messengers
… different extensions of the standard model. Supersymmetry (SUSY), in particular the Minimal Supersymmetric Standard Model (MSSM), is one such extension that is specially attractive by its simplicity and elegance. However, if this symmetry is to be realized in nature, it must be spontaneously …
-
Pseudo-goldstino to gravitino decay : an implication of multiple supersymmetry breaking
… is that there are two independent sectors of supersymmetry breaking. We compute this main decay rate using the goldstino equivalence theorem to replace the final gravitino state with a goldstino. This replacement allows us to study simpler models which help build the intuition and methods for …
-
Electroweak symmetry breaking in the era of the Higgs boson discovery
… deviations from the electroweak symmetry breaking mechanism as predicted by the Standard Model (SM), and we introduce a new framework to analyze hadronic final states at colliders. In the first part, we begin by considering supersymmetric extensions of the SM and by studying the connection …
-
SUSY Seesaw model and phenomenological implications for leptonic processes at low energies and leptogenesis
… the lepton masses. Since the mechanism of soft supersymmetry breaking (SSB) is completely unknown, a novel analysis beyond the often studied minimal Supergravity scenarios has been performed. This way it has been demonstrated that in the considered mSUGRA, AMSB, GMSB and gaugino mediated …
-
Search for Long-Lived Neutral Particles in Final States with Delayed Photon and Missing Transverse Energy from Proton-Proton Collisions Using the CMS detector.
… \leq 300$GeV/c^{2}, or effective Supersymmetry breaking energy scale, $\Lambda \leq 220TeV$, are ruled out of existence at 95\% $CL_{S}$ confidence level. The exclusion limit on the product of the production cross-section and branching ratio of the neutralino to photon and …
-
A Search for Sleptons with Intermediate Lifetimes in e+e- Collisions at sqrt(s)=189-209 GeV
… werden im Rahmen des Minimal Gauge Mediated Supersymmetry Breaking (GMSB) Modells vorhergesagt und zerfallen jeweils in ein Lepton und ein Gravitino. Fuer die Suche wurde die charakteristische Topologie von Spuren mit grossen Stossparametern und fehlender Energie ausgenutzt. Alle bei LEP2 …