Log in

Relevant bibliographies by topics / Massa del neutrino / Dissertations / Theses

To see the other types of publications on this topic, follow the link: Massa del neutrino.

Dissertations / Theses on the topic 'Massa del neutrino'

Author: Grafiati

Published: 9 March 2023

Last updated: 31 July 2025

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the top 50 dissertations / theses for your research on the topic 'Massa del neutrino.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Browse dissertations / theses on a wide variety of disciplines and organise your bibliography correctly.

1

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

Full text

Abstract:

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

APA, Harvard, Vancouver, ISO, and other styles

2

Salgado, Maurílio Ferreira. "Fenomenologia de medidas diretas de massa de neutrino." [s.n.], 2010. http://repositorio.unicamp.br/jspui/handle/REPOSIP/278492.

Full text

Abstract:

Orientador: Orlando Luís Goulart Peres<br>Dissertação (mestrado) - Universidade Estadual de Campinas, Instituto de Física Gleb Wataghin<br>Made available in DSpace on 2018-08-15T20:53:54Z (GMT). No. of bitstreams: 1 Salgado_MaurilioFerreira_M.pdf: 1919300 bytes, checksum: 5f4341c064eb9c9bbcc9a3ae84fa84d8 (MD5) Previous issue date: 2010<br>Resumo: A massa é um dos objetos de estudo mais importantes em física de neutrinos, talvez o mais importante. Nesta dissertação discutimos como se dá a geração de massa no Modelo Padrão, que é capaz de explicar de maneira compacta grande parte da diversidad

APA, Harvard, Vancouver, ISO, and other styles

3

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

Full text

Abstract:

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

APA, Harvard, Vancouver, ISO, and other styles

4

Lima, Dibartolomei Antônio Pereira de. "Mecanismos de geração de massa para neutrinos." Universidade Federal da Paraíba, 2010. http://tede.biblioteca.ufpb.br:8080/handle/tede/5699.

Full text

Abstract:

Made available in DSpace on 2015-05-14T12:14:00Z (GMT). No. of bitstreams: 1 arquivototal.pdf: 978847 bytes, checksum: 3c8166c6c938e9a2ddd388bff2104829 (MD5) Previous issue date: 2010-11-19<br>Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - CAPES<br>Studied in this work two mechanisms for generating mass for the neutrinos which are extentions of the SM. The first chapter is a presentation of the Standard Model with its contents and properties. The second chapter discusses an extension with the insertion of the right-handed neutrino component that implies in Dirac s massiv

APA, Harvard, Vancouver, ISO, and other styles

5

Zavanin, Eduardo Marcio 1989. "Tópicos em física de neutrinos." [s.n.], 2017. http://repositorio.unicamp.br/jspui/handle/REPOSIP/322731.

Full text

Abstract:

Orientador: Marcelo Moraes Guzzo<br>Tese (doutorado) - Universidade Estadual de Campinas, Instituto de Física Gleb Wataghin<br>Made available in DSpace on 2018-09-01T21:05:54Z (GMT). No. of bitstreams: 1 Zavanin_EduardoMarcio_D.pdf: 12290577 bytes, checksum: e37b2af24ec03321ad993ebd98fbc0dc (MD5) Previous issue date: 2017<br>Resumo: O objetivo desse trabalho é estudar um mecanismo alternativo à hipótese de neutrino estéril para a solução das anomalias dos antineutrinos de reatores, da anomalia do Gálio e da anomalia dos aceleradores. Vamos também entender como encaixar esse mecanismo na teor

APA, Harvard, Vancouver, ISO, and other styles

6

Pasquini, Pedro Simoni 1988. "Fenomenologia em modelos com dimensões extras." [s.n.], 2013. http://repositorio.unicamp.br/jspui/handle/REPOSIP/278477.

Full text

Abstract:

Orientador: Orlando Luis Goulart Peres<br>Dissertação (mestrado) - Universidade Estadual de Campinas, Instituto de Física Gleb Wataghin<br>Made available in DSpace on 2018-08-23T00:42:36Z (GMT). No. of bitstreams: 1 Pasquini_PedroSimoni_M.pdf: 4615786 bytes, checksum: d94409b2794db9d8be03e41a933166d1 (MD5) Previous issue date: 2013<br>Resumo: Apesar do grande sucesso alcançado pela teoria do modelo padrão baseada nas simetrias SU&subC;(3)? SU&subL;(2)? U(1), ainda existem alguns desafios a serem conquistados. Uma maneira direta de resolver os problemas é interpretar o modelo padrão (SM) como

APA, Harvard, Vancouver, ISO, and other styles

7

Sawy, Fatma H. A. "A new way to determine the neutrino mass hierarchy at reactors." Doctoral thesis, Università degli studi di Padova, 2019. http://hdl.handle.net/11577/3425774.

Full text

Abstract:

The neutrino mass ordering is one of the fundamental characteristics of the reference 3-neutrino mixing scheme that still remains undetermined experimentally at present. Some of basic neutrino physics observables, which are planned to be measured in currently running and/or upcoming neutrino experiments, depend critically on the neutrino mass ordering. The Neutrino Mass Hierarchy Determination ( MHD) is one of the main goals of the major current and future neutrino experiments. MHD corresponds to the sign of the so called atmospheric neutrino mass, |Delta(m^2_atm)|. The medium baselines react

APA, Harvard, Vancouver, ISO, and other styles

8

BORGHESI, MATTEO. "Toward the first neutrino mass measurement of Holmes." Doctoral thesis, Università degli Studi di Milano-Bicocca, 2022. http://hdl.handle.net/10281/379056.

Full text

Abstract:

Gli unici metodi per misurare la massa del neutrino che non siano dipendente dal modello teorico sono quelli basati sullo studio cinematico del decadimento beta o per cattura elettronica, poiché assumono solo la conservazioni di energia e momento. Holmes è un progetto ERC che è iniziato nel 2014 e che è portato avanti nei laboratori di criogenia dell’università di Milano-Bicocca. Il suo obiettivo è quello di effettuare una misura diretta della massa del neutrino con una sensibilità statistica dell’ordine dell’elettronvolt. Inoltre, proverà anche la fattibilità di questa tecnica per una futuro

APA, Harvard, Vancouver, ISO, and other styles

9

Medina, Alberto Martin Gago. "Soluções de grande comprimento de oscilação para o problema de neutrinos solares." Universidade de São Paulo, 2001. http://www.teses.usp.br/teses/disponiveis/43/43134/tde-04122013-105222/.

Full text

Abstract:

Esta tese apresenta uma análise estatística detalhada dos dados de experimentos com neutrinos solares mais recentes, com duas diferentes soluções para oscilações de neutrinos, ambas caracterizadas por um grande comprimento de oscilação. A primeira baseada no mecanismo de oscilação padrão, ou seja, induzida por massa, sendo esta estudada nos casos de duas e três gerações e dentro do regime de quase-vácuo. E a segunda, uma exótica, que usa como mecanismo de oscilação uma possível violação do princípio de equivalência, que foi analisada somente para o caso de duas gerações, sendo este discutido p

APA, Harvard, Vancouver, ISO, and other styles

10

Barbano, Eleonora. "Studio della risoluzione in impulso dei muoni nel Near Detector di DUNE." Bachelor's thesis, Alma Mater Studiorum - Università di Bologna, 2019. http://amslaurea.unibo.it/19392/.

Full text

Abstract:

Lo studio delle proprietà del neutrino ha conseguito notevoli risultati negli ultimi decenni, tuttavia esistono domande alle quali, al momento, non si è in grado di dare una risposta. Alcuni quesiti aperti riguardano la violazione di CP nel settore leptonico e la gerarchia di massa. L'esperimento DUNE sarà un progetto internazionale finalizzato allo studio delle oscillazioni di neutrino su un fascio di 1300 km dal Fermilab al South Dakota, con l'obiettivo di migliorare le nostre conoscenze sui processi che coinvolgono queste particelle. L'oggetto di questa tesi è stato lo studio delle presta

APA, Harvard, Vancouver, ISO, and other styles

11

Bourret, Simon. "Neutrino oscillations and earth tomography with KM3NeT-ORCA." Thesis, Sorbonne Paris Cité, 2018. http://www.theses.fr/2018USPCC247.

Full text

Abstract:

Les oscillations de saveur des neutrinos, découvertes au tournant du 21ème siècle, constituent à ce jour le signe le plus direct de physique au-delà du Modèle Standard. La collaboration KM3NeT a commencé la construction d'un détecteur à effet Tcherenkov de neutrinos au fond de la mer Méditerranée: ORCA (Oscillation Research with Cosmics in the Abyss). Le but principal d'ORCA sera la détermination de la hiérarchie de masse des neutrinos, un paramètre fondamental, encore inconnu, du modèle théorique des oscillations de neutrinos. Le principe de la mesure est la détection d'un large échantillon d

APA, Harvard, Vancouver, ISO, and other styles

12

Hemmer, Sabine. "Study of Lepton Number Conserving and Non-Conserving Processes Using GERDA Phase I Data." Doctoral thesis, Università degli studi di Padova, 2014. http://hdl.handle.net/11577/3424596.

Full text

Abstract:

The GERmanium Detector Array (GERDA) experiment, located underground at the INFN Laboratori Nazionali del Gran Sasso (LNGS) in Italy, uses high-purity germanium detectors to search for neutrinoless double beta decay (0νββ) of Ge-76. The first phase of the experiment lasted from November 2011 to May 2013 and collected data with a total exposure of 21.6 kg · yr. In this thesis, a thorough analysis of these data was performed. A background model was developed to decompose the observed energy spectrum in its individual contributions. The region around the Q-value of 0νββ, Qββ , at 2039 keV was s

APA, Harvard, Vancouver, ISO, and other styles

13

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/.

Full text

Abstract:

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

APA, Harvard, Vancouver, ISO, and other styles

14

Wilquet, Gaston. "Masses, mélange et oscillations de neutrinos." Doctoral thesis, Universite Libre de Bruxelles, 2005. http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/211058.

Full text

Abstract:

Une revue générale est faite de la situation expérimentale concernant la mesure des masses, du mélange et des oscillations de neutrinos, ainsi que de la phénoménologie sous-jacente. Mes contributions à travers le programme expérimental du CERN, CHARM-II, CHORUS et OPERA, font l'objet d'un développement particulier. Le dernier chapitre tente de mettre en perspective le programme expérimental à moyen et long terme.<p><p>The experimental situation concerning the measurements of neutrinos masses, mixing and oscillation is reviewed, as well as of the underlying phenomenology. A particular attention

APA, Harvard, Vancouver, ISO, and other styles

15

Torres, Fernando Rossi 1982. "Neutrinos de supernova." [s.n.], 2010. http://repositorio.unicamp.br/jspui/handle/REPOSIP/278288.

Full text

Abstract:

Orientadores: Marcelo Moraes Guzzo, Pedro Cunha de Holanda<br>Tese (doutorado) - Universidade Estadual de Campinas, Instituto de Física Gleb Wataghin<br>Made available in DSpace on 2018-08-16T08:24:00Z (GMT). No. of bitstreams: 1 Torres_FernandoRossi_D.pdf: 6051875 bytes, checksum: 56888c02ccce0616320cd185ab5d3267 (MD5) Previous issue date: 2010<br>Resumo: Neutrinos de supernova são ferramentas fundamentais, tanto para se entender o mecanismo de explosão de supernovas e formação de núcleos pesados além do ferro, assim como para determinar propriedades ainda desconhecidas e especulativas na f

APA, Harvard, Vancouver, ISO, and other styles

16

Machado, Ana Carolina Bruno. "Geração de massa para neutrinos ativos na presença de 1 ou 2 neutrinos estéreis /." São Paulo, 2007. http://hdl.handle.net/11449/138364.

Full text

Abstract:

Orientador: Vicente Pleitez<br>Banca: Marcelo Moraes Guzzo<br>Banca: Alex Gomes Dias<br>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 tr

APA, Harvard, Vancouver, ISO, and other styles

17

Machado, A. C. B. [UNESP]. "Geração de massa para neutrinos ativos na presença de 1 ou 2 neutrinos estéreis." Universidade Estadual Paulista (UNESP), 2007. http://hdl.handle.net/11449/138364.

Full text

Abstract:

Made available in DSpace on 2016-05-17T16:50:54Z (GMT). No. of bitstreams: 0 Previous issue date: 2007-04-20. Added 1 bitstream(s) on 2016-05-17T16:54:22Z : No. of bitstreams: 1 000855780.pdf: 631291 bytes, checksum: 8f982054c6f104f52a311d172deb51bb (MD5)<br>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

APA, Harvard, Vancouver, ISO, and other styles

18

Barry, James Munnik Hamilton. "Comparison of A₄ neutrino mass models." Thesis, Rhodes University, 2010. http://hdl.handle.net/10962/d1015271.

Full text

Abstract:

The present neutrino oscillation data are compatible with tri-bimaximal mixing, to leading order. The addition of an A₄ family symmetry and extended Higgs sector to the Standard Model can generate this mixing pattern, assuming the correct vacuum expectation value alignment of Higgs scalars. The effect of deviating this alignment is studied, for different types of A₄ models, with a phenomenological emphasis: the effect of perturbations on the model predictions for the neutrino oscillation and neutrino mass observables. The standard theoretical description of neutrino oscillations is presented,

APA, Harvard, Vancouver, ISO, and other styles

19

Erwin, Rebecca Joan Filippone Bradley Ramsey-Musolf Michael. "Neutrino mass constraints on electroweak parameters /." Diss., Pasadena, Calif. : Caltech, 2007. http://resolver.caltech.edu/CaltechETD:etd-05252007-084814.

Full text

APA, Harvard, Vancouver, ISO, and other styles

20

Frigerio, Michele. "Neutrino Mass Matrix: Reconstruction and Implications." Doctoral thesis, SISSA, 2003. http://hdl.handle.net/20.500.11767/4199.

Full text

APA, Harvard, Vancouver, ISO, and other styles

21

Rodejohann, Werner. "Phenomenological aspects of Majorana neutrino mass matrices." [S.l.] : [s.n.], 2001. http://deposit.ddb.de/cgi-bin/dokserv?idn=963801589.

Full text

APA, Harvard, Vancouver, ISO, and other styles

22

Mannaa, Sammy, and Antek Szadaj. "Distribution of Neutrino Mixing Parameters FromReal and Complex Random Neutrino Mass Matrices." Thesis, KTH, Teoretisk fysik, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-127458.

Full text

Abstract:

The theory of neutrino oscillations is covered. Also, the theory of Dirac, Majorana, and Dirac-Majorana neutrinos is presented. From this theory, and the model presented in [7], a program is constructed which creates a suitable number of neutrino mass matrices M using pseudo-random numbers generated in MATLAB. These matrices are diagonalised, and from the general notion of the Pontecorvo-Maki-Nakagawa-Sakata matrix UPMNS, statistical distributions of six mixing parameters are presented, namely; 12; 13; 23, the CP-violating Dirac phase delta ( ), and two Majorana CP-violating phases alpha one a

APA, Harvard, Vancouver, ISO, and other styles

23

Davour, Anna. "Search for low mass WIMPs with the AMANDA neutrino telescope." Doctoral thesis, Uppsala : Acta Universitatis Upsaliensis, 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-7913.

Full text

APA, Harvard, Vancouver, ISO, and other styles

24

Blennow, Mattias. "Theoretical and Phenomenological Studies of Neutrino Physics." Doctoral thesis, Stockholm : Department of Theoretical Physics, Royal Institute of Technology, 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-4415.

Full text

APA, Harvard, Vancouver, ISO, and other styles

25

Lima, Rodolfo Valentim da Costa. "Análise Bayesiana de dois problemas em Astrofísica Relativística: neutrinos do colapso gravitacional e massas das estrelas de nêutrons." Universidade de São Paulo, 2012. http://www.teses.usp.br/teses/disponiveis/14/14131/tde-26062013-162012/.

Full text

Abstract:

O evento estraordinário de SN1987A vem sendo investigado há mais de vinte e cinco anos. O fascínio que cerca tal evento astronômico está relacionado com a observação em tempo real da explosão à luz da Física de neutrinos. Detectores espalhados pelo mundo observaram um surto neutrinos que dias mais tarde foi confirmado como sendo a SN1987A. Kamiokande, IMB e Baksan apresentaram os eventos detectados que permitiu o estudo de modelos para a explosão e resfriamento da hipotética estrela de nêutrons remanescente. Até hoje não há um consenso a origem do progenitor e a natureza do objeto compacto re

APA, Harvard, Vancouver, ISO, and other styles

26

Laiman, Michael. "Recherches d'oscillation de neutrinos aupres d'un reacteur nucleaire." Strasbourg 1, 1999. http://www.theses.fr/1999STR13093.

Full text

Abstract:

Une serie de resultats recents ont fournis aux physiciens l'impulsion et la curiosite necessaires pour aller approfondir notre connaissance des neutrinos. En particulier l'observation des deficits de neutrinos solaires et atmospheriques semble indiquer la possibilite que les neutrinos aient une masse. La resolution de cette question fondamentale est donc l'objectif principal de toutes les experiences actuelles ayant rapport aux neutrinos ; plus precisement, l'etude des oscillations de neutrinos represente un moyen interessant d'y parvenir. Le present travail de these traite donc de la recherch

APA, Harvard, Vancouver, ISO, and other styles

27

Macko, Miroslav. "Expérience SuperNEMO : Études des incertitudes systématiques sur la reconstruction de traces et sur l'étalonnage en énergie. Evaluation de la sensibilité de la 0nbb avec émission de Majoron pour le Se-82." Thesis, Bordeaux, 2018. http://www.theses.fr/2018BORD0368/document.

Full text

Abstract:

La thèse présentée est composée de divers projets que j’ai réalisés au cours de la phasede construction du démonstrateur SuperNEMO pendant la période 2015-2018.L’expérience SuperNEMO, située dans le laboratoire souterrain LSM, est conçue pourrechercher 0nbb de 82Se. Sa technologie, qui tire parti du suivi des particules, est uniquedans le domaine des expériences de double désintégration bêta. La reconstruction de latopologie des événements est un outil puissant pour la suppression de fond naturel.Une partie de la thèse est consacrée à un travail expérimental. J’ai participé à la préparationde

APA, Harvard, Vancouver, ISO, and other styles

28

Wren, Steven. "Neutrino mass ordering studies with IceCube-DeepCore." Thesis, University of Manchester, 2018. https://www.research.manchester.ac.uk/portal/en/theses/neutrino-mass-ordering-studies-with-icecubedeepcore(70414fde-3bef-4028-877b-5e1e86b2165d).html.

Full text

Abstract:

The IceCube Neutrino Observatory at the South Pole is the world's largest neutrino detector with over 1km^3 of instrumented Antarctic ice. While it has been primarily designed to observe astrophysical neutrinos, this size also allows it to collect vast quantities of atmospheric neutrinos. These high-statistics datasets allow for measurements of the properties of neutrinos, in particular the phenomena of neutrino oscillation. One of the outstanding questions in this field is that of the neutrino mass ordering (NMO). The Precision IceCube Next Generation Upgrade (PINGU) is a proposed low-energy

APA, Harvard, Vancouver, ISO, and other styles

29

Aquino, Verissimo Manoel de. "Oscilações entre três sabores de neutrinos." [s.n.], 1995. http://repositorio.unicamp.br/jspui/handle/REPOSIP/278074.

Full text

Abstract:

Orientador: Jose Bellandi Filho<br>Tese (doutorado) - Universidade Estadual de Campinas, Instituto de Fisica "Gleb Wataghin"<br>Made available in DSpace on 2018-07-20T10:40:49Z (GMT). No. of bitstreams: 1 Aquino_VerissimoManoelde_D.pdf: 1700679 bytes, checksum: 1ff2afb3f8802ef6a4fb1df5f7c6f08c (MD5) Previous issue date: 1995<br>Resumo: Apresentam-se neste trabalho as soluções para a equação de evolução temporal para um spinor a três componentes, quando a hamiltoniana do sistema depende do tempo e quando ela for constante. Discute-se as soluções para um sistema de três estados de sabores de n

APA, Harvard, Vancouver, ISO, and other styles

30

Baur, Julien. "Détermination de la masse des neutrinos cosmologiques avec les forêts Lyman-alpha." Thesis, Université Paris-Saclay (ComUE), 2017. http://www.theses.fr/2017SACLS219/document.

Full text

Abstract:

Les travaux présentés dans cette thèse contraignent la masse des neutrinos dans le contexte de 4 modèles de matière noire en utilisant le spectre de puissance du flux transmit dans les forêts Lyman-alpha des quasars distants. Les neutrinos laissent une emprunte sur les grandes structures dans l'Univers à travers l'échelle à laquelle ils diffusent, qui se manifeste comme un déficit de fluctuations de densité de matière sur des distances inversement proportionnelles à leur masse. De l'ordre de quelques Mpc, ces échelles peuvent être sondées par les forêts Ly-$alpha$ qui tracent la densité d'hydr

APA, Harvard, Vancouver, ISO, and other styles

31

Williams, Simon Shaughan. "A cylindrical mirror analyser for neutrino mass measurement." Thesis, University of Oxford, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.253133.

Full text

APA, Harvard, Vancouver, ISO, and other styles

32

Thornby, John Albert. "AMBER : a novel approach to neutrino mass measurement." Thesis, University of Warwick, 2008. http://wrap.warwick.ac.uk/56292/.

Full text

Abstract:

The existence of neutrino oscillations demands that neutrinos have non-zero rest mass, the evidence for and implications of which are discussed. Nuclear B-decay is offered as a model-independent tool for direct neutrino mass measurement and contemporary experimental measurements are reviewed. The AMBER experiment is introduced as a novel charge spectrometer, aimed at precision electron energy measurements to probe the structure of the B-spectrum close to its endpoint. AMBER employs a vacuum insulated inverse Kelvin probe to continuously monitor a single rate-of-change observable. A detailed te

APA, Harvard, Vancouver, ISO, and other styles

33

Cooper, Iain K. "On discrete flavour symmetries, neutrino mass and mixing." Thesis, University of Southampton, 2012. https://eprints.soton.ac.uk/345719/.

Full text

Abstract:

Neutrino mixing is a thriving area of particle physics research, with the recent discovery of non-zero θ13 inspiring a large amount of research into the field. This thesis presents two models which aim to explain the observed neutrino mixing patterns in the context of Grand Unified Theories, which also output quark masses and mixings. A model predicting Tri-Bimaximal mixing is presented which combines a previously published SU(5) model with an A4 family symmetry. Extra adjoint fermionic matter is present as prescribed by the original Unified model, and this provides 2 seesaw particles; however

APA, Harvard, Vancouver, ISO, and other styles

34

Quinn, Liam. "Determining the neutrino mass hierarchy with KM3NeT/ORCA." Thesis, Aix-Marseille, 2018. http://www.theses.fr/2018AIXM0386.

Full text

Abstract:

ORCA (Recherche d'Oscillations avec les Rayons Cosmiques dans l'Abysse) est un détecteur TCherenkov de neutrinos à l'échelle des mégatonnes, actuellement en construction par la collaboration KM3NeT, à 2450m de profondeur dans la mer Méditerranée.Les neutrinos atmosphériques traversent la Terre le long d'un large éventail de lignes des bases, en subissant des effets de matière qui augmentent les oscillations des neutrinos avec énergies de l'ordre de peu GeV, qui dépendent de l'hiérarchie de masse des neutrinos (NMH).La conception d' ORCA comprise une dense configuration de modules optiques, qui

APA, Harvard, Vancouver, ISO, and other styles

35

Jiang, Miao. "Study of the neutrino mass hierarchy with the atmospheric neutrino data collected in Super-Kamiokande IV." Kyoto University, 2019. http://hdl.handle.net/2433/242899.

Full text

APA, Harvard, Vancouver, ISO, and other styles

36

Allanach, Benjamin Christopher. "Supersymmetric extensions of the standard model and the fermion mass problem." Thesis, University of Southampton, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.294624.

Full text

APA, Harvard, Vancouver, ISO, and other styles

37

Blondel, Sophie. "Optimisation du blindage contre les neutrons pour le démonstrateur de SuperNEMO et analyse de la double désintégration β du néodyme-150 vers les états excités du samarium-150 avec le détecteur NEMO 3". Phd thesis, Université Paris Sud - Paris XI, 2013. http://tel.archives-ouvertes.fr/tel-00855279.

Full text

Abstract:

La série de détecteurs NEMO est conçue pour la recherche de la double désintégration β sans émission de neutrino qui prouverait que le neutrino est une particule de Majorana (i.e. identique à son antiparticule) et massif. Après avoir présenté l'état des lieux en physique des neutrinos et les détecteurs NEMO 3 et SuperNEMO, cette thèse s'articule en deux parties indépendantes. La première concerne l'étude du bruit de fond provenant des neutrons pour optimiser le blindage destiné au premier module de SuperNEMO. La conclusion de cette étude montre que l'ajout de plaques de polyéthylène boré par r

APA, Harvard, Vancouver, ISO, and other styles

38

Bonnet, Florian. "Effective theories and neutrino physics." Paris 11, 2009. http://www.theses.fr/2009PA112068.

Full text

APA, Harvard, Vancouver, ISO, and other styles

39

Ohata, Takahiro. "The relationships between neutrino Majorana mass and other physics." Doctoral thesis, Kyoto University, 2021. http://hdl.handle.net/2433/263454.

Full text

APA, Harvard, Vancouver, ISO, and other styles

40

Wang, Peng Wise Mark B. Wise Mark B. Ramsey-Musolf Michael. "Neutrino mass implications for physics beyond the Standard Model /." Diss., Pasadena, Calif. : California Institute of Technology, 2007. http://resolver.caltech.edu/CaltechETD:etd-05312007-144931.

Full text

APA, Harvard, Vancouver, ISO, and other styles

41

Petracca, Fernanda <1983&gt. "Constraints on neutrino mass fraction using Redshift Space Distortions." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2014. http://amsdottorato.unibo.it/6728/1/Fernanda_Petracca_tesi.pdf.

Full text

Abstract:

Redshift Space Distortions (RSD) are an apparent anisotropy in the distribution of galaxies due to their peculiar motion. These features are imprinted in the correlation function of galaxies, which describes how these structures distribute around each other. RSD can be represented by a distortions parameter $\beta$, which is strictly related to the growth of cosmic structures. For this reason, measurements of RSD can be exploited to give constraints on the cosmological parameters, such us for example the neutrino mass. Neutrinos are neutral subatomic particles that come with three flavours,

APA, Harvard, Vancouver, ISO, and other styles

42

Petracca, Fernanda <1983&gt. "Constraints on neutrino mass fraction using Redshift Space Distortions." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2014. http://amsdottorato.unibo.it/6728/.

Full text

Abstract:

Redshift Space Distortions (RSD) are an apparent anisotropy in the distribution of galaxies due to their peculiar motion. These features are imprinted in the correlation function of galaxies, which describes how these structures distribute around each other. RSD can be represented by a distortions parameter $\beta$, which is strictly related to the growth of cosmic structures. For this reason, measurements of RSD can be exploited to give constraints on the cosmological parameters, such us for example the neutrino mass. Neutrinos are neutral subatomic particles that come with three flavours,

APA, Harvard, Vancouver, ISO, and other styles

43

Pereira, Ricardo Aluisio. "Mecanismos Seesaw de geração de massas para neutrinos." Universidade de São Paulo, 2012. http://www.teses.usp.br/teses/disponiveis/43/43134/tde-26032013-151946/.

Full text

Abstract:

Neste trabalho estudamos os mecanismos de geração de massa para os neutrinos. Inicialmente discorremos sobre o setor eletrofraco do Modelo Padrão dando ênfase para sua construção e os mecanismo de geração de massa das partículas, onde salientamos os limites deste modelo e sua percepção da natureza do neutrino. Utilizando campos do Modelo Padrão, vimos que é possível construir um operador de dimensão 5 que gera termos de massa de Majorana para partículas. Estudamos três realizações renormalizáveis que são pequenas extensões do Modelo Padrão e que a baixas energias exibiam o mesmo padrão que est

APA, Harvard, Vancouver, ISO, and other styles

44

Bergström, Johannes. "Models in Neutrino Physics : Numerical and Statistical Studies." Doctoral thesis, KTH, Teoretisk partikelfysik, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-127409.

Full text

Abstract:

The standard model of particle physics can excellently describe the vast majorityof data of particle physics experiments. However, in its simplest form, it cannot account for the fact that the neutrinos are massive particles and lepton flavorsmixed, as required by the observation of neutrino oscillations. Hence, the standardmodel must be extended in order to account for these observations, opening up thepossibility to explore new and interesting physical phenomena. There are numerous models proposed to accommodate massive neutrinos. Thesimplest of these are able to describe the observations us

APA, Harvard, Vancouver, ISO, and other styles

45

McCutcheon, Michael Warren. "Analysis of a 2-3 exchange symmetric neutrino mass matrix." Thesis, McGill University, 2002. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=79048.

Full text

Abstract:

We present an analysis of the requirements of a 2--3 exchange symmetry in the neutrino mass matrix in comparison to the experimentally allowed ranges of neutrino oscillation parameters. The symmetric matrix, being defined at an energy scale appropriate to a right-handed neutrino in a See-saw scheme of mass suppression, is subject to evolution under Supersymmetric Renormalisation Group Equations, in order to interpret the matrix at experimental energies. By way of motivation we discuss the status of neutrino mass in the Standard Model and justify the context of the analysis by examining

APA, Harvard, Vancouver, ISO, and other styles

46

Furse, Daniel Lawrence. "Techniques for direct neutrino mass measurement utilizing tritium [beta]-decay." Thesis, Massachusetts Institute of Technology, 2015. http://hdl.handle.net/1721.1/99313.

Full text

Abstract:

Thesis: Ph. D., Massachusetts Institute of Technology, Department of Physics, 2015.<br>In title on title-page, "[beta]" appears as the lower-case Greek letter. Cataloged from PDF version of thesis.<br>Includes bibliographical references (pages 265-270).<br>This thesis documents efforts performed in the service to two direct neutrino mass experiments, namely KATRIN at the Karlsruhe Institute of Technology in Karlsruhe, Germany and Project8 at the University of Washington in Seattle. These experiments aim to utilize a measurement of the shape of the endpoint of the tritium beta decay spectrum to

APA, Harvard, Vancouver, ISO, and other styles

47

Bartra, Jorge Humberto Colonia. "Efeitos das ondas magnetossônicas no fluxo de neutrinos solares." [s.n.], 1996. http://repositorio.unicamp.br/jspui/handle/REPOSIP/278284.

Full text

Abstract:

Orientador: Marcelo Moraes Guzzo<br>Dissertação (mestrado) - Universidade Estadual de Campinas, Instituto de Fisica Gleb Wataghin<br>Made available in DSpace on 2018-07-21T03:59:05Z (GMT). No. of bitstreams: 1 Bartra_JorgeHumbertoColonia_M.pdf: 807888 bytes, checksum: d8915103e00d9fb655e3e19f2b276e51 (MD5) Previous issue date: 1996<br>Resumo: Estudamos um modelo onde ondas magnetossônicas lentas são produzidas devido a deslocamentos de plasma solar, perturbando o campo magnético no Sol. Como conseqüência, quando se supõe um momento magnético não nulo do neutrino, observam-se flutuações no fl

APA, Harvard, Vancouver, ISO, and other styles

48

Bartra, Jorge Humberto Colonia. "Conversão ressonante spin-sabor de neutrinos solares e flutuações magnetohidrodinâmicas." [s.n.], 1999. http://repositorio.unicamp.br/jspui/handle/REPOSIP/278328.

Full text

Abstract:

Orientador: Marcelo Moraes Guzzo<br>Tese (doutorado) - Universidade Estadual de Campinas, Instituto de Fisica Gleb Wataghin<br>Made available in DSpace on 2018-07-24T13:47:37Z (GMT). No. of bitstreams: 1 Bartra_JorgeHumbertoColonia_D.pdf: 682927 bytes, checksum: 4745217e69ceaf74950b9d3c297b6a99 (MD5) Previous issue date: 1999<br>Resumo: Argumentamos que as observações de neutrinos solares devem ser sensíveis às flutuações magnetohidrodinâmicas no Sol, se o mecanismo de Precessão Ressonante Spin-Sabor for a solução para o Problema do Neutrino Solar. Nossos cálculos indicam a existência de ond

APA, Harvard, Vancouver, ISO, and other styles

49

Gaydutschenko, Larissa 1987. "Matrizes de massa e violação CP." [s.n.], 2006. http://repositorio.unicamp.br/jspui/handle/REPOSIP/278509.

Full text

Abstract:

Orientador: Orlando Luis Goulart Peres<br>Dissertação (mestrado) - Universidade Estadual de Campinas, Instituto de Física Gleb Wataghin<br>Made available in DSpace on 2018-08-23T16:45:26Z (GMT). No. of bitstreams: 1 Gaydutschenko_Larissa_M.pdf: 776013 bytes, checksum: dded3e977e716b07101df7cb392a6b94 (MD5) Previous issue date: 2013<br>Resumo: O fenômeno de oscilação de neutrinos, já experimentalmente observado, só pode ser explicado se a massa dos neutrinos for diferente de zero. No entanto, até pouco tempo atrás, acreditava-se que neutrinos não tivessem massa. O Modelo Padrão das partículas

APA, Harvard, Vancouver, ISO, and other styles

50

Alizadeh, Ramin. "A new upper limit on the electron anti-neutrino rest-mass." Thesis, University of Oxford, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.236237.

Full text

APA, Harvard, Vancouver, ISO, and other styles

We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!