In this thesis, we study di erent topics relating to supersymmetry at electroweak scale using naturalness and minimality as our guiding principles. We will discuss a new mechanism to generate large A-terms in MSSM. This mechanism could be combined with gauge mediation supersymmetry breaking mechanism to explain the MSSM spectrum and the Higgs mass with minimum ne-tuning. Moreover, we will show that these models may have unique spectrum with one of the stops much lighter than other colored particles. We will also discuss how simple vector-like extensions of MSSM can explain the dark matter relic abundance and the Higgs mass in a natural setting. Among other results, we emphasize a tight relation between relic abundance and spin dependent cross-section in our model. Finally we discuss the e ect of D-term on the vacuum structure of O'Raifeartaigh models and its possible role in models of direct gauge mediation.
Subject (authority = RUETD)
Topic
Physics and Astronomy
RelatedItem (type = host)
TitleInfo
Title
Rutgers University Electronic Theses and Dissertations
Identifier (type = RULIB)
ETD
Identifier
ETD_7688
PhysicalDescription
Form (authority = gmd)
electronic resource
InternetMediaType
application/pdf
InternetMediaType
text/xml
Extent
1 online resource (viii, 92 p. : ill.)
Note (type = degree)
Ph.D.
Note (type = bibliography)
Includes bibliographical references
Subject (authority = ETD-LCSH)
Topic
Supersymmetry
Subject (authority = ETD-LCSH)
Topic
Electroweak interactions
Note (type = statement of responsibility)
by Aria Basirnia
RelatedItem (type = host)
TitleInfo
Title
Graduate School - New Brunswick Electronic Theses and Dissertations
Identifier (type = local)
rucore19991600001
Location
PhysicalLocation (authority = marcorg); (displayLabel = Rutgers, The State University of New Jersey)
Rutgers University. Graduate School - New Brunswick
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Type
License
Name
Author Agreement License
Detail
I hereby grant to the Rutgers University Libraries and to my school the non-exclusive right to archive, reproduce and distribute my thesis or dissertation, in whole or in part, and/or my abstract, in whole or in part, in and from an electronic format, subject to the release date subsequently stipulated in this submittal form and approved by my school. I represent and stipulate that the thesis or dissertation and its abstract are my original work, that they do not infringe or violate any rights of others, and that I make these grants as the sole owner of the rights to my thesis or dissertation and its abstract. I represent that I have obtained written permissions, when necessary, from the owner(s) of each third party copyrighted matter to be included in my thesis or dissertation and will supply copies of such upon request by my school. I acknowledge that RU ETD and my school will not distribute my thesis or dissertation or its abstract if, in their reasonable judgment, they believe all such rights have not been secured. I acknowledge that I retain ownership rights to the copyright of my work. I also retain the right to use all or part of this thesis or dissertation in future works, such as articles or books.