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Jesse D. Thaler. Williams, Mobolaji (Mobolaji O.) Massachusetts Institute of Technology. Department of Physics. Massachusetts Institute of Technology. Department of Physics 2014-01-09T19:54:04Z 2014-01-09T19:54:04Z 2013 http://hdl.handle.net/1721.1/83778 864905469 Thesis (S.B.)--Massachusetts Institute of Technology, Dept. of Physics, 2013. Cataloged from PDF version of thesis. Includes bibliographical references (pages 67-68). This thesis studies the decay of a pseudo-goldstino to a gravitino plus a photon in the Minimal Supersymmetric Standard Model. The foundational premise of this decay process 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 the final calculation. Specifically, we first study the decay of a pseudo-goldstino to a goldstino plus a photon in a toy model of multiple supersymmetry breaking and then the same process in the Minimal Supersymmetric Standard Model without supergravity. Incorporating supergravity introduces the interpretation of the goldstino as the longitudinal component of the gravitino and introduces the constant mass ratio between the gravitino and the pseudo-goldstino which is definitive of multiple local supersymmetry breaking. For the main decay process, we find that the rate is zero for certain relationships between the parameters which define the two hidden sectors. In the discussion we suggest other similar calculations which can be done within the same framework. by Mobolaji Williams. S.B. 68 pages eng Massachusetts Institute of Technology M.I.T. theses are protected by copyright. They may be viewed from this source for any purpose, but reproduction or distribution in any format is prohibited without written permission. See provided URL for inquiries about permission. http://dspace.mit.edu/handle/1721.1/7582 Physics. Pseudo-goldstino to gravitino decay : an implication of multiple supersymmetry breaking Thesis application/pdf false Publication unknown unknown <Publication xmlns="https://www.openaire.eu/cerif-profile/1.1/" id="5200424e-0517-4c6a-b59c-6ad7f8875085"> <Type xmlns="https://www.openaire.eu/cerif-profile/vocab/COAR_Publication_Types">http://purl.org/coar/resource_type/c_1843</Type> <Language>eng</Language> <Title>Pseudo-goldstino to gravitino decay : an implication of multiple supersymmetry breaking</Title> <PublishedIn> <Publication> </Publication> </PublishedIn> <PublicationDate>2013</PublicationDate> <Authors> <Author> <DisplayName>Williams, Mobolaji (Mobolaji O.)</DisplayName> <Affiliation> <OrgUnit> </OrgUnit> </Affiliation> </Author> </Authors> <Editors> </Editors> <Publishers> <Publisher> <DisplayName>Massachusetts Institute of Technology</DisplayName> <OrgUnit /> </Publisher> </Publishers> <License>http://dspace.mit.edu/handle/1721.1/7582</License> <Keyword>Physics.</Keyword> <Abstract>This thesis studies the decay of a pseudo-goldstino to a gravitino plus a photon in the Minimal Supersymmetric Standard Model. The foundational premise of this decay process 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 the final calculation. Specifically, we first study the decay of a pseudo-goldstino to a goldstino plus a photon in a toy model of multiple supersymmetry breaking and then the same process in the Minimal Supersymmetric Standard Model without supergravity. Incorporating supergravity introduces the interpretation of the goldstino as the longitudinal component of the gravitino and introduces the constant mass ratio between the gravitino and the pseudo-goldstino which is definitive of multiple local supersymmetry breaking. For the main decay process, we find that the rate is zero for certain relationships between the parameters which define the two hidden sectors. In the discussion we suggest other similar calculations which can be done within the same framework.</Abstract> <Access xmlns="http://purl.org/coar/access_right" > </Access> </Publication>