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Master's Dissertation
DOI
10.11606/D.43.2014.tde-02122014-093759
Document
Author
Full name
André Luiz Moura Britto
Institute/School/College
Knowledge Area
Date of Defense
Published
São Paulo, 2014
Supervisor
Committee
Funchal, Renata Zukanovich (President)
Albuquerque, Ivone Freire da Mota e
Guzzo, Marcelo Moraes
Title in Portuguese
Oscilação de neutrinos produzidos por aniquilação de matéria escura no sol
Keywords in Portuguese
Fisica teorica
Materia escura
Neutrinos
Teoria de campos
Abstract in Portuguese
Neste trabalho foi estudado como a materia escura pode ser capturada por corpos celestes e como a ela pode se comunicar com o Modelo Padrao atraves de sua aniquilacao em quarks e leptons. Os hadrons e leptons gerados podem decair em neutrinos que podem ser detectados por experimentos na Terra. Como tres tipos de neutrinos de autoestados de sabor ja foram observados experimentalmente e que diversos dados experimentais evidenciam oscilacao de sabor entre esses neutrinos, e preciso levar essa fenomenologia em consideracao ao estudar os neutrinos produzidos pela materia escura. O formalismo que permite considerar oscilacoes de neutrinos e ao mesmo tempo colisoes elasticas e inelasticas na materia e o formalismo de matriz densidade. Com ele estudamos o fluxo de muons gerados por neutrinos provenientes da aniquilacao da materia escura no interior do sol e como utilizar esse resultado para testes de modelos de particulas para materia escura.
Title in English
Neutrinos Oscillations Produced by Dark Matter annihilation in the Sun.
Keywords in English
Field Theory; 4. Dark Matter
Neutrinos
Theoretical Physics
Abstract in English
In this work was studied how dark matter can be captured by celestial bodies and how it can communicate with the Standard Model through its annihilation in quarks and leptons. The hadrons and leptons generated can decay in to neutrinos which can be detected by experiments in Earth. As three types of neutrino flavor eigenstates have been observed experimentally and many experimental data have shown the flavor neutrino oscillate, it is necessary use this phenomenology when studying neutrinos produced by Dark Matter. The formalism that allows considering neutrino oscillations and, at same time, elastic and inelastic matter collisions is the density matrix formalism. With this formalism we studied the muons flux produced by neutrinos coming from dark matter annihilation inside the sun and how to use these results to test particle models for dark matter.
 
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mestradoAndre.pdf (3.24 Mbytes)
Publishing Date
2014-12-02
 
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