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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

A search for sterile neutrinos in MINOS

Osiecki, Thomas Henry, 1980- 28 August 2008 (has links)
MINOS, the Main Injector Neutrino Oscillation Search, is a long baseline neutrino oscillation experiment based at Fermilab National Accelerator Laboratory. The experiment uses a neutrino beam, which is measured 1 km downstream from its origin in the Near detector at Fermilab and then 735 km later in the Far detector at the Soudan mine. By comparing these two measurements, MINOS can attain a very high precision for parameters in the atmospheric sector of neutrino oscillations. In addition to precisely determining [Delta]m[superscript 2,subscript23] and [theta]₂₃ through the disappearance of v[subscript mu], MINOS is able to measure v[subscript mu] [mathematical symbol for implies] v[subscript sterile] by looking for a deficit in the number of neutral current interactions seen in the Far detector. In this thesis, we present the results of a search for sterile neutrinos in MINOS.
2

A search for sterile neutrinos in MINOS

Osiecki, Thomas Henry, January 1900 (has links)
Thesis (Ph. D.)--University of Texas at Austin, 2007. / Vita. Includes bibliographical references.
3

Topics in QCD and electroweak theory

Jora, Catalina Renata. January 2008 (has links)
Thesis (PH.D.) -- Syracuse University, 2008. / "Publication number AAT 3329392"
4

Implications of atmospheric neutrino data

Escamilla Roa, Jesús. January 2008 (has links)
Thesis (Ph. D. in Physics)--Vanderbilt University, Dec. 2008. / Title from title screen. Includes bibliographical references.
5

Comparison of prompt e-neutrino and mu-neutrino fluxes from 400 GeV p-W interactions

Smith, Elton Shouse. January 1983 (has links)
Thesis (Ph. D.)--University of Wisconsin--Madison, 1983. / Typescript. Vita. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves 116-171).
6

Phenomenological investigation of deep inelastic neutrino scattering

Weiler, Thomas Joseph, January 1976 (has links)
Thesis--Wisconsin. / Vita. Includes bibliographical references.
7

Charged current neutrino and antineutrino interactions and nucleon structure functions

Heagy, Stuart Maxwell. January 1980 (has links)
Thesis (Ph. D.)--University of Wisconsin--Madison, 1980. / Typescript. Vita. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves 224-229).
8

Atmospheric neutrino oscillation analysis using Fluka 3D flux and Super-Kamiokande data

Kibayashi, Atsuko. January 2002 (has links)
Thesis (Ph. D.)--University of Hawaii at Manoa, 2002. / Includes bibliographical references (leaves 126-128). Also available on microfiche.
9

Quantum dissipation and decoherence in neutrino oscillations = Dissipação e descoerência quântica em oscilação de neutrinos / Dissipação e descoerência quântica em oscilação de neutrinos

Balieiro Gomes, Guilherme, 1989- 24 August 2018 (has links)
Orientador: Marcelo Moraes Guzzo / Dissertação (mestrado) - Universidade Estadual de Campinas, Instituto de Física Gleb Wataghin / Made available in DSpace on 2018-08-24T10:29:34Z (GMT). No. of bitstreams: 1 BalieiroGomes_Guilherme_M.pdf: 6302317 bytes, checksum: 9ef0c8f211d65000eb42dea08706aab4 (MD5) Previous issue date: 2014 / Resumo: Nessa dissertação, utilizando a Mecânica Quântica de Sistemas Abertos, analisamos dados de KamLAND utilizando um modelo que considera oscilação de neutrinos em duas famílias incluindo-se o efeito de descoerência quântica. Revisamos conceitos importantes de Mecânica Quântica usual, como o princípio de superposição, coerência quântica, e o problema da medida. Revemos também o formalismo de matriz de densidade e o utilizamos para apresentar a Mecânica Quântica de Sistemas Abertos, da qual obtemos a equação de Lindblad - Kossakowski. Oscilação de neutrinos no vácuo são revisadas utilizando o formalismo de matriz de densidade, e então a equação de Lindblad - Kossakowski é usada para obtermos novas equações para oscilação de neutrinos em duas famílias, onde vemos a inclusão do efeito de descoerência quântica. Então, usamos um teste de ?2 para obter limites para os parâmetros usuais de oscilação de neutrinos e também para o parâmetro de descoerência, que chamamos de ?. Encontramos evidências em favor da inclusão do efeito de descoerência quântica , uma vez que nossa análise mostrou que o valor ? = 0 está excluído em 68,27%C.L. / Abstract: In this dissertation, using Quantum Open Systems we analyze data from KamLAND by using a model that considers neutrino oscillation in two families with the inclusion of the decoherence effect. We review important concepts of usual Quantum Mechanics, such as the superposition principle, coherence, and the measurement problem. We also review the density matrix formalism and we use it to present the theory of Quantum Open Systems, which gives the Lindblad ¿ Kossakowski equation. Vacuum neutrino oscillations are studied using the density matrix formalism, and then the lindblad - Kossakowski equation is used to obtain new equations for the neutrino oscillations in two families, in which we see the inclusion of the decoherence effect Then, we use a ?2 Test to find limits for the usual oscillation parameters and also for the decoherence parameter which we call ?. We find evidence in favor of the inclusion of the decoherence effect, since the analysis shows that a zero value for the decoherence parameter ? is excluded in 68.27% C.L. / Mestrado / Física / Mestre em Física
10

Geração de massa para neutrinos ativos na presença de 1 ou 2 neutrinos estéreis /

Machado, Ana Carolina Bruno. January 2007 (has links)
Orientador: Vicente Pleitez / Banca: Marcelo Moraes Guzzo / Banca: Alex Gomes Dias / Resumo: Este trabalho apresenta um estudo de modificações feitas no Modelo Padrão (MP), acrescentando massa aos neutrinos, a fim de observar as alterações que elas causam em todo o Modelo Padrão Eletrofraco (MPE). Assim, a idéia principal deste estudo é obter matrizes de massa, por meio da introdução de um ou dois neutrinos estéreis no conteúdo de matéria do MPE e de mecanismos de gerar massa de Majorana para os neutrinos ativos do MPE, como, por exemplo, correções radioativas, o operador de dimensão 5 e o tripleto escalar. Os modelos finais e, portanto, as matrizes de massa, serão provenientes das possíveis combinações entre os mecanismos estudados / Abstract: This work presents a study on the changes we have done in the Standard Model (SM), adding mass to neutrinos, in order to observe the alterations these changes may cause to the whole Electroweak Standard Model (ESM). Therefore, the main idea of this study is to get mass matrices by introducing one or two sterile neutrinos in the ESM mater content and mechanisms to generate Majorana mater to ESM' s active neutrinos, such as, radioactive corrections, the dimension five operator, and the scalar triplet. The final models, and therefore the mass matrices, come from the possible combinations between the studied mechanisms / Mestre

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