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Dissertations / Theses on the topic 'Neutrinole'

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Published: 9 March 2023
Last updated: 19 July 2025

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1

POZZI, STEFANO. "Search for double-beta decay of 130Te to the excited states of 130Xe in CUORE-0." Doctoral thesis, Università degli Studi di Milano-Bicocca, 2017. http://hdl.handle.net/10281/158137.

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CUORE-0 è stato un esperimento bolometrico, mantenuto in funzione dal 2013 al 2015, il cui scopo scientifico principale è stata la ricerca del decadimento doppio beta senza emissione di neutrini (0vbb) nel 130Te. Il rivelatore era costituito da 52 cristalli di TeO2, usati sia come rivelatore che come sorgente dell'isotopo di interesse. I cristalli erano organizzati in una singola torre e contenuti in un criostato capace di raggiungere la temperatura di 10 mK. Grazie al basso fondo radioattivo raggiunto dall'esperimento, la ricerca di altri processi rari, oltre al decadimento doppio beta senza
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2

Wong, Chan Fai. "Phenomenology of sterile neutrinos at different mass scales : neutrinoless double beta decay and neutrino oscillations." Thesis, Durham University, 2012. http://etheses.dur.ac.uk/4931/.

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The existence of neutrino oscillation is the first evidence of physics beyond the Standard Model. It proves that neutrinos are massive and motivates the study of the neutrino nature, mixings and mass generation models. To have a better understanding of neutrino masses and mixings, the existence and character of sterile neutrinos would be an important factor. In this thesis, we will describe the phenomena of neutrinoless double beta decay and sterile neutrino oscillations. The studies of these two topics will contribute to understanding the properties of sterile neutrinos in the heavy and light
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3

Gratieri, Diego Rossi 1982. "Fenomenologia de neutrinos atmosféricos com neutrinos de massa variável." [s.n.], 2012. http://repositorio.unicamp.br/jspui/handle/REPOSIP/278535.

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Orientador: Orlando Luis Goulart Peres<br>Tese (doutorado) - Universidade Estadual de Campinas, Instituto de Física Gleb Wataghin<br>Made available in DSpace on 2018-08-20T17:03:07Z (GMT). No. of bitstreams: 1 Gratieri_DiegoRossi_D.pdf: 1179296 bytes, checksum: 9a313c3efcf6512bd55d97d0b99d491b (MD5) Previous issue date: 2012<br>Resumo: Neste trabalho obtemos de forma independente a descrição da distribuição angular dos eventos de neutrinos atmosféricos vistos pelo detector Super-Kamiokande tanto para as regiões de sub-GeV como multi-GeV. Para tal, estudamos de forma detalhada a seção de choq
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4

Stachurska, Juliana. "Astrophysical Tau Neutrinos in IceCube." Doctoral thesis, Humboldt-Universität zu Berlin, 2020. http://dx.doi.org/10.18452/21611.

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Das IceCube Neutrino Observatorium am Südpol hat die Existenz eines diffusen astrophysikalischen Neutrinoflusses nachgewiesen. Die Flavor-Zusammensetzung astrophysikalischer Neutrinos trägt Informationen über Orte kosmischer Teilchenbeschleunigung und Auswirkungen potenzieller neuer Physik auf die Neutrinoausbreitung. Zur seiner Bestimmung ist die Beobachtung von Tau-Neutrinos nötig. Ab einer Energie von ~O(100 TeV) kann deren Wechselwirkung über geladene Ströme eine Doppelkaskaden-Topologie ergeben, bei der die zwei Energiedepositionen am Tau-Entstehungs- und Tau-Zerfallsvertex aufgelöst werd
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5

Girardi, Ivan. "Discrete Symmetry Approach to Lepton Flavour, Neutrino Mixing and Leptonic CP Violation, and Neutrino Related Physics Beyond the Standard Theory." Doctoral thesis, SISSA, 2016. http://hdl.handle.net/20.500.11767/4923.

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The experimental evidences of neutrino oscillation, caused by non-zero neutrino masses and neutrino mixing, which were obtained in the experiments with solar, atmospheric, accelerator and reactor neutrinos, opened new field of research in elementary particle physics. The principal goal is to understand at fundamental level the mechanism giving rise to non-zero neutrino masses and neutrino mixing. The open fundamental questions include those of the nature — Dirac or Majorana — of massive neutrinos, of the type of spectrum neutrino masses obey, of the status of CP symmetry in the lepton sector,
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6

George, Jeffrey S. "Experimental study of the atmospheric [Nu][mu]/[Nu]e ratio in the multi-GeV energy range /." Thesis, Connect to this title online; UW restricted, 1998. http://hdl.handle.net/1773/9752.

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7

Manzanillas, Luis. "Development of the source calibration system of the STEREO experiment and search for sterile neutrinos at the ILL." Thesis, Université Grenoble Alpes (ComUE), 2016. http://www.theses.fr/2016GREAY079/document.

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L'expérience STEREO a été proposé afin de donner une réponse sans ambiguïté àl'idée d'un état de neutrino stérile léger ($Delta m^{2}sim 1eV^{2}$) comme l'origine del'anomalie réacteur des antineutrinos. Le but de l'expérience est de confirmer ou de rejetercette hypothèse en recherchant un patron d'oscillation à courte distance (9-11 m) dans lespectre en énergie des $overline{nu_{e}}$'s émis par le réacteur nucléaire de recherchede l'Institut Laue-Langevin à Grenoble (France). A cet effet, le détecteur estcomposé de 2 tonnes du liquide scintillant dopé au Gd et lu par un réseau detubes photomu
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8

Pascoal, Kellen Alves. "Neutrino-magnetohidrodinâmica, oscilações de neutrinos e instabilidades em plasmas." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2018. http://hdl.handle.net/10183/180517.

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Foi feita uma modificação da teoria magnetohidrodinâmica, incorporando a dinâmica dos neutrinos, chamada magnetohidrodinâmica de neutrinos. Elétrons e íons foram toma- dos como não-relativísticos, juntamente com os neutrinos eletrônicos (ultra) relativísticos acoplados via força eletro-fraca. Devido à ressonância com um feixe de neutrinos, foi prevista a desestabilização das ondas magnetosônicas rápidas. Admitindo modos oblí- quos, é possível detectar uma instabilidade que se torna mais forte quando o vetor de onda é paralelo ao campo magnético de equilíbrio, associando-se à onda magnetosônica
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9

Tapia, Herrera Luis Carlos 1982. "Fenomenologia dos decaimentos de neutrinos de supernova." [s.n.], 2011. http://repositorio.unicamp.br/jspui/handle/REPOSIP/278537.

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Orientador: Orlando Luis Goulart Peres<br>Dissertação (mestrado) - Universidade Estadual de Campinas, Instituto de Física Gleb Wataghin<br>Made available in DSpace on 2018-08-19T13:26:00Z (GMT). No. of bitstreams: 1 TapiaHerrera_LuisCarlos1982-_M.pdf: 3198399 bytes, checksum: bd22a4c22f21d4db7bc8f29cda4bd521 (MD5) Previous issue date: 2011<br>Resumo: Apresentamos neste trabalho um estudo da fenomenologias dos neutrinos, que inicia com um modelo além do Modelo Padrão, que gera massa e decaimento para os neutrinos. O modelo foi proposto por Gelmini e Roncadelli [3], no modelo é introducido um
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10

Boriero, Daniel Francisco 1981. "Fenomenologia de neutrinos massivos em cosmologia." [s.n.], 2013. http://repositorio.unicamp.br/jspui/handle/REPOSIP/278586.

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Orientador: Pedro Cunha de Holanda<br>Tese (doutorado) - Universidade Estadual de Campinas, Instituto de Física Gleb Wataghin<br>Made available in DSpace on 2018-08-22T08:38:27Z (GMT). No. of bitstreams: 1 Boriero_DanielFrancisco_D.pdf: 1994859 bytes, checksum: a59e512b9fdcb71d04bb5f9702f0fb60 (MD5) Previous issue date: 2013<br>Resumo: Cosmologia de neutrinos é a atividade de pesquisa dedicada ao teste de propriedades de neutrinos através de observáveis cosmológicos. Particularmente, as propriedades estudadas e testadas ao longo desta tese de doutorado foram à massa dos neutrinos e o número
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11

Basto, Gonzalez Victor Saul 1977. "Procura de indícios de neutrinos estéreis nos experimentos IceCube e KATRIN." [s.n.], 2014. http://repositorio.unicamp.br/jspui/handle/REPOSIP/276982.

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Orientador: Orlando Luis Goulart Peres<br>Tese (doutorado) - Universidade Estadual de Campinas, Instituto de Física Gleb Wataghin<br>Made available in DSpace on 2018-08-24T13:21:19Z (GMT). No. of bitstreams: 1 BastoGonzalez_VictorSaul_D.pdf: 37659795 bytes, checksum: f4492cea9594ac4fbffc288a0c46526a (MD5) Previous issue date: 2014<br>Resumo: Motivados pelos indícios experimentais da existência de um quarto neutrino, que surge nos dados de oscilações coletados nos experimentos de aparecimento e desaparecimento de neutrinos, e pela possibilidade teórica de explicar a pequena massa dos neutrino
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12

Gomes, Abner Leonel Gadelha. "Limites nos parâmetros do modelo de oscilação com decaimento de neutrinos usando os dados do experimento MINOS." Universidade Federal de Goiás, 2014. http://repositorio.bc.ufg.br/tede/handle/tede/7509.

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Submitted by JÚLIO HEBER SILVA (julioheber@yahoo.com.br) on 2017-06-23T17:07:23Z No. of bitstreams: 2 Dissertação - Abner Leonel Gadelha Gomes - 2013.pdf: 12566466 bytes, checksum: de6788671342c72dc83a388cf0a1f093 (MD5) license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5)<br>Approved for entry into archive by Cláudia Bueno (claudiamoura18@gmail.com) on 2017-07-07T20:24:16Z (GMT) No. of bitstreams: 2 Dissertação - Abner Leonel Gadelha Gomes - 2013.pdf: 12566466 bytes, checksum: de6788671342c72dc83a388cf0a1f093 (MD5) license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf84
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13

Laberge, Gaetan (Gaetan Joseph Henri) Carleton University Dissertation Physics. "212Pb assay for the determination of the neutral current background at the Sudbury Neutrino Observatory." Ottawa, 1995.

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14

Delgadillo, Franco Luis Angel. "Sterile Neutrino Searches." Thesis, Virginia Tech, 2021. http://hdl.handle.net/10919/103875.

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In the first part of the thesis we explore the sensitivity to sterile neutrinos by using a novel kaon tagging technology: ENUBET, the proposed experiment could decisively test indications from the experiments Neutrino-4 and IceCube. In the second part of the thesis we discuss the current status of sterile neutrino searches at nuclear reactors, we present a study with the optimization of a green field, two baseline reactor experiment with respect to the sensitivity for electron anti-neutrino disappearance in search of a light sterile neutrino at both research and commercial reactors. We find th
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15

Godley, Andrew R. "A search for [nu mu to nu e] oscillations in the NOMAD experiment." Connect to full text, 2000. http://hdl.handle.net/2123/374.

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Thesis (Ph. D.)--University of Sydney, 2001.<br>Squiggly right arrow used in title. Title from title screen (viewed Apr. 23, 2008). Submitted in fulfilment of the requirements for the degree of Doctor of Philosophy to the School of Physics, Faculty of Science. Degree awarded 2001; thesis submitted 2000. Includes bibliography. Also available in print form.
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16

Zolotarova, Anastasiia. "Study and selection of scintillating crystals for the bolometric search for neutrinoless double beta decay." Thesis, Université Paris-Saclay (ComUE), 2018. http://www.theses.fr/2018SACLS293/document.

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L'observation de la désintégration double bêta sans émission de neutrino (0ν2β) fournirait des informations essentielles sur la nature du neutrino et son échelle de masse absolue. Ce processus consiste en la transformation simultanée de deux protons en deux neutrons avec l'émission de deux électrons et aucun neutrino. Cette transition n'est possible que si les neutrinos sont égaux aux antineutrinos (nature Majorana du neutrino). Les recherches pour une désintégration à ce point rare représentent un défi technique complexe, car les expériences de prochaine génération visent des sensibilités de
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17

Boriero, Daniel Francisco 1981. "Cosmologia de neutrinos e o neutrino estéril como matéria escura." [s.n.], 2008. http://repositorio.unicamp.br/jspui/handle/REPOSIP/278601.

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Orientador: Pedro Cunha de Holanda<br>Dissertação (mestrado) - Universidade Estadual de Campinas, Instituto de Fisica Gleb Wataghin<br>Made available in DSpace on 2018-08-12T10:44:00Z (GMT). No. of bitstreams: 1 Boriero_DanielFrancisco_M.pdf: 4969339 bytes, checksum: 948e129914cf07a208b25eb26a168a96 (MD5) Previous issue date: 2008<br>Resumo: Necessário na maioria das teorias para atribuir massa aos neutrinos e explicar o fenômeno de oscilação de sabores, o neutrino de mão direita, estéril em SU(2)L U(1)Y, é um candidato natural a matéria escura não bariônica. Cosmologicamente produzido via o
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18

Pequignot, Maxime. "Les expériences Nucifer et Stéréo : étude des antineutrinos de réacteurs à courte distance." Thesis, Paris 11, 2015. http://www.theses.fr/2015PA112194/document.

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Interagissant très peu avec leur environnement, les neutrinos peuvent aujourd'hui être clairement détectés à l'aide d'une technologie largement éprouvée reposant sur l'utilisation de liquide scintillant et de photo-multiplicateurs. Les progrès réalisés ces dernières années permettent de réduire la taille et la complexité des détecteurs et laissent ainsi entrevoir les premières applications à ces particules. Première expérience placée à 7,2 m d'un coeur de réacteur nucléaire, le détecteur Nucifer démontre la possibilité de compter les antineutrinos venant du combustible à cette faible distance
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19

Tsang, Ka-vang. "A search for periodic neutrino signals and gamma-ray burst neutrinos with the Sudbury Neutrino Observatory." Click to view the E-thesis via HKUTO, 2005. http://sunzi.lib.hku.hk/hkuto/record/B3194324X.

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20

Tsang, Ka-vang, and 曾嘉宏. "A search for periodic neutrino signals and gamma-ray burst neutrinos with the Sudbury Neutrino Observatory." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2005. http://hub.hku.hk/bib/B3194324X.

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21

Iyer, Sharada Ramalingham. "A novel approach in the detection of muon neutrino to tau neutrino oscillation from extragalactic neutrinos." Diss., The University of Arizona, 2001. http://hdl.handle.net/10150/290068.

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A novel approach is proposed for studying the ν(μ) → ν(τ) oscillation and detection of extragalactic neutrinos. Active Galactic Nuclei (AGN), Gamma Ray Bursters (GRB) and Topological Defects are believed to be sources of ultrahigh energy ν(μ) and νₑ. These astrophysical sources provide a long baseline of 100Mpc, or more, for possible detection of ν(μ) → ν(τ) oscillation with mixing parameter Δm² down to 10⁻¹⁷ eV², many orders of magnitude below the current accelerator experiments. The propagation characteristics of upward going muon and tau neutrinos is studied to show that high energy tau neu
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22

Pompa, Federica. "Neutrino physics with the XENONnT experiment." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2019. http://amslaurea.unibo.it/19448/.

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One of the most active fields in physics is the search for Dark Matter, for which the XENON Project is one of the main protagonists. The new XENONnT experiment will be operative starting from 2020 in the underground Laboratori Nazionali del Gran Sasso, under 3600 meters water equivalent of mountain rock shield. It is a multi-ton detector for direct search of Dark Matter, consisting of a double phase liquid-gas xenon TPC which contains 5.9 t of liquid xenon target mass, inserted in a Cryostat surrounded by a tank containing 700 t of Gd-loaded water, instrumented with PMTs for muon and neutron t
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23

Miknaitis, Kathryn Kelly Schaffer. "A search for matter enhanced neutrino oscillations through measurements of day and night solar neutrino fluxes at the Sudbury Neutrino Observatory /." Thesis, Connect to this title online; UW restricted, 2005. http://hdl.handle.net/1773/9636.

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24

Astier, Pierre. "Recherche d'oscillations de neutrinos dans le canal neutrino-muon vers neutrino-electron aupres de l'accelerateur de brookhaven." Paris 7, 1987. http://www.theses.fr/1987PA077268.

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25

Astier, Pierre. "Recherche d'oscillations de neutrinos dans le canal neutrino-muon vers neutrino-électron auprès de l'accélérateur de Brookhaven." Grenoble 2 : ANRT, 1987. http://catalogue.bnf.fr/ark:/12148/cb37602428b.

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26

Heereman, von Zuydtwyck David. "HitSpooling: an improvement for the supernova neutrino detection system in icecube." Doctoral thesis, Universite Libre de Bruxelles, 2015. http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/209179.

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The IceCube Neutrino Observatory consists of a lattice of 5160 photomultiplier tubes (PMTs)<p>which monitor one cubic kilometer of deep Antarctic ice at the geographic South Pole.<p>IceCube was primarily designed to detect neutrinos of energies greater than O(100 GeV).<p>Due to subfreezing ice temperatures, the photomultipliers' dark noise rates are particularly<p>low which enables IceCube to search for neutrinos from galactic supernovae by detecting<p>bursts of MeV neutrinos emitted during the core collapse and for several seconds following.<p>For that purpose, a dedicated online supernova DA
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27

Miguez, Bruno Silva Rodriguez 1986. "Extraindo limites para o fluxo difuso de neutrinos não eletrônicos de supernovas dos dados do SNO." [s.n.], 2010. http://repositorio.unicamp.br/jspui/handle/REPOSIP/277727.

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Orientadores: Ernesto Kemp , Orlando Luis Goulart Peres<br>Dissertação (mestrado) - Universidade Estadual de Campinas, Instituto de Fisica Gleb Wataghin<br>Made available in DSpace on 2018-08-15T13:43:50Z (GMT). No. of bitstreams: 1 Miguez_BrunoSilvaRodriguez_M.pdf: 1981431 bytes, checksum: b136bcf1df6dec73fc94b57c7d498cf0 (MD5) Previous issue date: 2010<br>Resumo: É predita a existência de um fluxo de neutrino difusos, gerado pela integração no tempo de todas as supernovas que ocorreram ao longo da evolução do universo e ponderado pelas taxas de formação estelar e de ocorrência de supernova
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28

Carneiro, Mateus Fernandes 1988. "Fenomenologia de modelos MaVanN's em neutrinos de reator." [s.n.], 2012. http://repositorio.unicamp.br/jspui/handle/REPOSIP/276991.

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Orientador: Pedro Cunha de Holanda<br>Dissertação (mestrado) - Universidade Estadual de Campinas, Instituto de Física Gleb Wataghin<br>Made available in DSpace on 2018-08-21T14:05:23Z (GMT). No. of bitstreams: 1 Carneiro_MateusFernandes_M.pdf: 12484894 bytes, checksum: d16e157cbea9d17a89f8d5f01c30ab44 (MD5) Previous issue date: 2012<br>Resumo: Mecanismos de Neutrinos de Massa Variável (Mass Varying Neutrinos - MaVaN¿s) são propostos para ligar a escala de massa dos neutrinos com a energia escura no intuito de resolver o problema da coincidência cósmica. Em alguns cenários essa massa pode apr
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29

Coleman, Stephen James. "A measurement of neutrino oscillations with muon neutrinos in the MINOS experiment." W&M ScholarWorks, 2011. https://scholarworks.wm.edu/etd/1539623581.

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Experimental evidence has established that neutrino flavor states evolve over time. A neutrino of a particular flavor that travels some distance can be detected in a different neutrino flavor state. The Main Injector Neutrino Oscillation Search (MINOS) is a long-baseline experiment that is designed to study this phenomenon, called neutrino oscillations. MI-NOS is based at Fermilab near Chicago, IL, and consists of two detectors: the Near Detector located at Fermilab, and the Far Detector, which is located in an old iron mine in Soudan, MN. Both detectors are exposed to a beam of muon neutrinos
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Garza, Juan Pablo Yáñez. "Measurement of neutrino oscillations in atmospheric neutrinos with the IceCube DeepCore detector." Doctoral thesis, Humboldt-Universität zu Berlin, Mathematisch-Naturwissenschaftliche Fakultät I, 2014. http://dx.doi.org/10.18452/17016.

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Neutrinooszillationen sind ein sehr aktives Forschungsfeld. In den letzten Jahrzehnten haben viele Experimente das Phänomen untersucht und sind inzwischen zu Präazisionsmessungen vorangeschritten. Mit seiner Niederenergieerweiterung DeepCore kann das IceCube-Experiment zu diesem Forschungsfeld beitragen. IceCube ist ein 1 km^3 großes Tscherenkow-Neutrino-Teleskop, welches das tiefe, antarktische Eis des Südpols als optisches Medium nutzt. DeepCore ist eine Erweiterung mit dichterer Instrumentierung im unteren Teil des IceCube-Teleskops. Diese dichte Instrumentierung ermöglicht den Nachweis
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31

Bailly-Salins, Louis. "Atmοspheric muοn studies and light sterile neutrinο search with ΚΜ3ΝeΤ/ΟRCA". Electronic Thesis or Diss., Normandie, 2024. http://www.theses.fr/2024NORMC228.

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La collaboration KM3NeT construit actuellement deux télescopes Cherenkov à neutrinos au fond de la mer Méditerranée, ORCA (Oscillation Research with Cosmics in the Abyss) pour mesurer les oscillations des neutrinos atmosphériques et ARCA (Astroparticle Research with Cosmics in the Abyss) pour détecter les neutrinos provenant de sources astrophysiques.Dans ce manuscrit, après avoir passé en revue l'état des mesures d'oscillation des neutrinos et des recherches de neutrinos stériles légers dans le premier chapitre, les détecteurs KM3NeT sont présentés dans le deuxième chapitre.Dans le chapitre 3
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32

Heron, Heidi. "Techniques to measure the NC background in the SNO experiment." Thesis, University of Oxford, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.244578.

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33

Prouse, Nicholas William. "The intermediate detector and neutrino phenomenology of the Hyper-Kamiokande experiment." Thesis, Queen Mary, University of London, 2018. http://qmro.qmul.ac.uk/xmlui/handle/123456789/46804.

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In this thesis, a number of aspects of neutrino oscillation physics are investigated, focusing on the design and phenomenology of next generation neutrino beam experiments. In working to optimise the sensitivity of the Hyper-Kamiokande experiment, new reconstruction software has been developed to meet the goal of fast, flexible reconstruction of particle positions, directions, energies and species. This is demonstrated for the TITUS intermediate detector, producing samples of neutrino interactions to constrain systematic uncertainties of oscillation analyses. Inclusion of these samples achieve
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34

DeKok, Alan (Alan T. ). Carleton University Dissertation Physics. "A Process degasser for the SNO Ultra-pure light water facility." Ottawa, 1996.

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35

Gonzalez, Yuber Ferney Perez. "Massive Neutrinos: Phenomenological and Cosmological Consequences." Universidade de São Paulo, 2017. http://www.teses.usp.br/teses/disponiveis/43/43134/tde-14122017-162727/.

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The XX century witnessed the quantum and relativistic revolutions in physics. The development of these two theories, namely, Quantum Mechanics and Relativity, was the inception of many crucial discoveries and technological advances. Among them, one stands out due to its uniqueness, the neutrino discovery. However, several neutrino properties are still obscure. Neutrinos are the only fundamental particles whose nature is currently unknown. Such fermions can either be different from their antiparticles, i.e., Dirac fermions, or be their own antiparticles, that is, Majorana fermions. On the other
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36

Fischer, Vincent. "Beta-decay emitted electronic antineutrinos as a tool for unsolved problems in neutrino oscillation physics." Thesis, Paris 6, 2015. http://www.theses.fr/2015PA066237/document.

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Le cadre global des oscillations de neutrinos est maintenant bien compris et nous quittons une ère d'exploration pour une ère de précision. L'expérience Double Chooz a pour but de mesurer l'angle de mélange theta13 par l'étude des oscillations des antineutrinos électroniques produits par les réacteurs de la centrale nucléaire de Chooz. Dans cette thèse, une sélection préliminaire des neutrinos détectés dans le détecteur proche est présentée. Les résultats les plus récents de Double Chooz, desquels sont extraits la mesure de theta13 la plus précise que l'expérience peut fournir à ce jour, seron
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37

Picoreti, Renan. "Neutrinos astrofísicos = mecanismo de produção e razão entre sabores." [s.n.], 2011. http://repositorio.unicamp.br/jspui/handle/REPOSIP/278534.

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Orientador: Orlando Luis Goulart Peres<br>Dissertação (mestrado) - Universidade Estadual de Campinas, Instituto de Física Gleb Wataghin<br>Made available in DSpace on 2018-08-17T22:10:39Z (GMT). No. of bitstreams: 1 Picoreti_Renan_M.pdf: 2695409 bytes, checksum: 33f93ce114e33774d72d40191bbac72b (MD5) Previous issue date: 2011<br>Resumo: Neutrinos Astrofísicos são produzidos quando prótons ou núcleos, acelerados numa fonte astrofísica, interagem com a matéria nas imediações gerando méons que decaem fracamente produzindo neutrinos. Remanescentes de Supernovas, Núcleos Ativos de Galáxias (AGN)
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38

Bartet--Friburg, Pierre. "Mesure de la section efficace d'interaction des neutrinos muoniques par courant chargé sur du carbone, sans production de pions dans l'état final et en fonction de la multiplicité et de la cinématique des particules produites, en utilisant le détecteur proche de T2K." Thesis, Paris 6, 2016. http://www.theses.fr/2016PA066351/document.

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Depuis la confirmation de l’existence du boson de Higgs et avec l’absence de signes de nouvelle physique au LHC, les oscillations des neutrinos sont parmi les seules à offrir des perspectivesd’observation et de mesure de phénomènes de nouvelle physique au delà du modèle standard.Le premier chapitre de cette thèse introduit le concept d’oscillation de saveur des neutrinospuis décrit l’état de l’art des connaissances ainsi que les perspectives expérimentales pour mesurer ou observer les pièces manquantes.Pour obtenir des résultats significatifs, ces futures expériences auront besoin de pouvoir p
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39

Back, Ashley Robert. "Probing new physics mechanisms in neutrinoless double-beta decay with SNO+." Thesis, Queen Mary, University of London, 2018. http://qmro.qmul.ac.uk/xmlui/handle/123456789/33945.

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In this thesis, I present the theory of neutrinoless double-beta decay (0 2 ), particularly the theory of exotic modes of 0 2 involving the emission of one or two Majorons. Alongside this, I summarise the most recent results in the experimental search for 0 2 , including limits on the rate of these exotic processes. I describe the SNO+ experiment and it's physics goals, which include the search for 0 2 . As part of the SNO+ collaboration, I have made a signi cant contribution towards the development of the data quality software that is essential for ensuring SNO+ can achieve its physics goals-
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40

Thornewell, Peter Michael. "³He neutral current detectors for the Sudbury Neutrino Observatory." Thesis, University of Oxford, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.343004.

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41

Euler, Sebastian [Verfasser]. "Observation of oscillations of atmospheric neutrinos with the IceCube Neutrino Observatory / Sebastian Euler." Aachen : Hochschulbibliothek der Rheinisch-Westfälischen Technischen Hochschule Aachen, 2014. http://d-nb.info/1058238922/34.

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42

Loach, James Chilton. "Measurement of the Flux of 8B Solar Neutrinos at the Sudbury Neutrino Observatory." Thesis, University of Oxford, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.490107.

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The Sudbury Neutrino Observatory (SNO) was a heavy water Cerenkov detector that had the unique ability to measure both the total il active flux of solar neutrino, using a neutral current (NC) interaction, and the flux of electron neutrinos, using a charged current (CC) interaction. The experiment has demonstrated that neutrinos 3 change flavour and that the total neutrino flux is consistent with the prediction of solar models.
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43

Felix, Regina Celia Medeiros. "Estudo de determinação dos parâmetros que descrevem a dinâmica de uma supernova galática por um detector de neutrinos futuro." Universidade de São Paulo, 2009. http://www.teses.usp.br/teses/disponiveis/43/43134/tde-17082009-084349/.

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O objetivo desta dissertação foi estudar os sinais que neutrinos provenientes de supernovas galáticas poderão produzir em detectores futuros, através de simulações de eventos observados na Terra por um detector Cherenkov pela reação de decaimento beta inverso. Por ser um local único em que neutrinos se encontram em condições de equilíbrio térmico, a física de neutrinos de supernova pode ser fonte de novo conhecimento na física de partículas elementares. Iniciamos o trabalho apresentando os aspectos mais importantes da física de neutrinos tal como é conhecida hoje, seguido de um estudo do pape
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44

Cernohorsky, Jan. "Neutrino driven neutron star formation." Amsterdam : Amsterdam : Rodopi ; Universiteit van Amsterdam [Host], 1990. http://dare.uva.nl/document/91884.

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45

Haberland, Marcus. "A search for a prompt atmospheric muon neutrino flux in the northern hemisphere using data releases from IceCube." Thesis, Uppsala universitet, Högenergifysik, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-415984.

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The IceCube Neutrino Observatory is a cubic kilometre scale detector for high-energy neutrinos above hundreds of GeV produced in Earth’s atmosphere as well as outside our solar system whenever particles are accelerated to ultra-relativistic energies. The prompt atmospheric contribution is a result of the creation of heavy mesons with charm components in the atmosphere. Past studies from IceCube using a maximum likelihood estimation over the whole neutrino energy spectrum always reported a best-fit zero prompt contribution so far [1–5], contrary to theory [6, 7]. In this analysis we tried to me
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46

Armatol, Antoine. "Innovative methods for background rejection in next-generation neutrinoless double beta decay bolometric experiments." Electronic Thesis or Diss., université Paris-Saclay, 2023. http://www.theses.fr/2023UPASP105.

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La recherche de la désintégration double bêta sans émission de neutrino (0ν2β) est un enjeu majeur de la physique contemporaine car son observation démontrerait que le neutrino est une particule de Majorana. La demi-vie du processus étant reliée à la masse effective de Majorana mββ, cela fournirait aussi une mesure de l'échelle de masse du neutrino et une information sur la hiérarchie de masse. L'expérience de prochaine génération CUPID vise à atteindre une sensibilité suffisamment grande pour explorer complètement l'espace des valeurs pour mββ dans le cas de la hiérarchie inversée de masse. E
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47

Basto, Gonzalez Victor Saul 1977. "Neutrinos de supernovas." [s.n.], 2008. http://repositorio.unicamp.br/jspui/handle/REPOSIP/278491.

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Orientador: Orlando Luis Goulart Peres.<br>Dissertação (mestrado) - Universidade Estadual de Campinas, Instituto de Física Gleb Wataghin.<br>Made available in DSpace on 2018-08-12T10:38:02Z (GMT). No. of bitstreams: 1 BastoGonzalez_VictorSaul_M.pdf: 1541009 bytes, checksum: b798dea659147d5050c68800d40ceb0a (MD5) Previous issue date: 2008<br>Resumo: Com este trabalho buscamos entender o fenômeno de oscilações de neutrinos na matéria. Para isto, estudamos a propagação de neutrinos em Supernovas. O estudo é feito nestes objetos astrofísicos, pois são produzidos neutrinos de todos os sabores qua
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48

Salagnac, Thomas. "Recherche d'un neutrino stérile avec l'expérience STEREO : développement de l'électronique et identification des neutrinos." Thesis, Université Grenoble Alpes (ComUE), 2017. http://www.theses.fr/2017GREAY068/document.

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Depuis 2011, la réévaluation de plus d’une vingtaine de mesures de flux de neutrinos de réacteur mesurés à courtes distances suggère la présence d’un déficit de 7 % par rapport aux prédictions. Cette anomalie est statistiquement significative à environ 3 sigmas, tout comme une autre anomalie similaire correspondant à l’observation d’un déficit de neutrinos émis par des sources intenses de désintégrations beta. Ces anomalies peuvent être expliquées soit par un biais dans la prédiction des flux de neutrinos, soit par l’existence d’un nouvel état de neutrino, un neutrino stérile léger, vers leque
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49

Stasik, Alexander Johannes. "Search for High Energetic Neutrinos from Core Collapse Supernovae using the IceCube Neutrino Telescope." Doctoral thesis, Humboldt-Universität zu Berlin, 2018. http://dx.doi.org/10.18452/18729.

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Die Entdeckung eines hochenergetischen Flusses astrophysikalischer Neutrinos stellt einen wesentlichen physikalischen Durchbruch der letzten Jahre dar. Trotz allem ist der Ursprung dieser Neutrinos immer noch unbekannt. Die Suche nach den Quellen der hochenergetischen kosmischen Strahlung ist direkt verbunden mit der Suche nach Neutrinos, da diese in den gleichen hadronischen Prozessen erzeugt werden und eine Neutrinoquelle deshalb einen direkten Hinweis auf eine Quelle der kosmischen Strahlung darstellen würde. Viele potentielle Quellen der Neutrinos werden diskutiert, darunter Kern-Kollaps S
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Grégoire, Timothée. "Search for high energy neutrinos from the Galactic plane with the ANTARES neutrino telescope." Thesis, Sorbonne Paris Cité, 2018. http://www.theses.fr/2018USPCC129/document.

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Deux analyses sont présentées dans cette thèse. Une première analyse exploite les données du télescope à neutrino ANTARES pour sonder la présence d'un flux de neutrino diffus galactique. Cette analyse se base sur un modèle récent de propagation des rayons cosmiques dans la galaxie, le modèle KRAγ. Ce modèle prédit un flux de neutrinos particulièrement élevé et proche de la sensibilité des télescopes à neutrinos actuels. Il existe deux versions de ce modèle correspondant à différentes coupures sur l'énergie des rayons cosmiques, à 5 et 50 PeV/nucléon. Une méthode de maximisation d'une fonction
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