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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

O Bóson de Higgs no contexto do modelo 331 supersimétrico reduzido

Ferreira Júnior, José Geilson 27 April 2016 (has links)
Submitted by Vasti Diniz (vastijpa@hotmail.com) on 2017-09-13T13:17:38Z No. of bitstreams: 1 arquivototal.pdf: 1153583 bytes, checksum: 90e000230d130e23facb89bab720b47a (MD5) / Made available in DSpace on 2017-09-13T13:17:38Z (GMT). No. of bitstreams: 1 arquivototal.pdf: 1153583 bytes, checksum: 90e000230d130e23facb89bab720b47a (MD5) Previous issue date: 2016-04-27 / Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - CAPES / In this work we built a supersymmetric version of the recently proposed reduced minimal 3-3-1 model using the superfield formalism. We study the mass spectrum of all particles emphasizing on the mass spectrum of the lightest scalars of the model. We show that Higgs mass of 125 GeV requires substantial radiative corrections. To do this, stops do not need develop a large mixing and must have mass around TeV. Moreover, some soft SUSY breaking terms may lie at the electroweak scale, which alleviates some tension concerning fine tuning of the related parameters. The lightest doubly charged scalar may have mass around few hundreds of GeV, which can be probed at the LHC, while the remaining scalars of the model have masses at TeV scale. / A presente tese busca construir a versão supersimétrica do modelo 3-3-1 mínimo reduzido, proposto recentemente, utilizando o formalismo de supercampos. Desenvolvemos o espectro de massa de todas as partículas, dando ênfase ao espectro de massa dos escalares mais leves do modelo. Mostramos que uma massa de 125 GeV para o bóson de Higgs requer correções radiativas substanciais. Para tal, os superparceiros do quark top não necessitam desenvolver uma grande mistura e devem ter massa em torno dos TeV. Além disso, alguns termos de quebra soft de supersimetria podem estar na escala eletrofraca, o que alivia um pouco o ajuste fino destes parâmetros. O mais leve escalar duplamente carregado pode ter massa em torno de algumas centenas de GeV, podendo ser sondado no LHC, enquanto os escalares restantes do modelo têm massas em escala TeV.

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