Read Books Online and Download eBooks, EPub, PDF, Mobi, Kindle, Text Full Free.
Etude De La Production De Neutrinos Associes Aux Sursauts Gamma Dans Le Modele Du Boulet De Canon
Download Etude De La Production De Neutrinos Associes Aux Sursauts Gamma Dans Le Modele Du Boulet De Canon full books in PDF, epub, and Kindle. Read online Etude De La Production De Neutrinos Associes Aux Sursauts Gamma Dans Le Modele Du Boulet De Canon ebook anywhere anytime directly on your device. Fast Download speed and no annoying ads. We cannot guarantee that every ebooks is available!
Book Synopsis Etude de la production de neutrinos associés aux sursauts gamma dans le modèle du Boulet de Canon by : Sophie Ferry
Download or read book Etude de la production de neutrinos associés aux sursauts gamma dans le modèle du Boulet de Canon written by Sophie Ferry and published by . This book was released on 2004 with total page 234 pages. Available in PDF, EPUB and Kindle. Book excerpt: ANTARES est un projet de télescope à neutrinos qui sera placé au large de Toulon, à 2500 m de profondeur. L'interaction d'un neutrino avec la matière produit un muon dont la lumière Cerenkov, émise lors de sa propagation, est détectée par 900 photomultiplicateurs répartis sur 12 lignes. Les sursauts gamma (GRB) sont des phénomènes cosmiques violents, observés une fois par jour. Dans le modèle du Boulet de Canon le sursaut est produit par l'interaction d'un jet, composé de boulet de canon (CB), avec le reste d'une supernova (SNR). Des chocs se propagent vers l'avant (dans le SNR) et vers l'arrière (dans le CB), aux abords desquels, les neutrinos sont produits. Une estimation de la production de neutrinos est donnée et, est étudiée sur un large espace des paramètres. Pour un GRB typique, entre 0,002 et 0,3 νμ cm-2 sont produits. Selon les angles de vue, ANTARES pourra détecter entre 1 et 10 νμ par an, en corrélation avec les GRB. Le bruit de fond oprique ambiant a été enregistré par le prototype d'une ligne d'ANTARES. L'analyse porte sur l'influence du bruit de fond sur le détecteur ainsi que sur l'activité des organismes qui en sont responsables. Par exemple il apparaît une périodicité entre 17,6 et 20,4 h compatible avec celle des mouvements des masses liquides imposés par la force de Coriolis à la latitude d'ANTARES.
Book Synopsis High Energy Neutrinos from Gamma Ray Bursts: Theoretical Predictions, Experimental Searches, and Prospects for Detection by : Oindree Banerjee
Download or read book High Energy Neutrinos from Gamma Ray Bursts: Theoretical Predictions, Experimental Searches, and Prospects for Detection written by Oindree Banerjee and published by Oindree Banerjee. This book was released on 2020-10-23 with total page 41 pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract Gamma-ray bursts (GRBs) are the most luminous transient events in the observed Universe. However, there is no direct observational evidence for what exactly drives a GRB. The most widely accepted model for these cosmic events is the fireball model where it is thought that a substantial fraction of the kinetic energy of the source is converted to gamma-radiation by shock accelerated electrons emitting synchrotron and inverse-Compton radiation. The acceleration of protons in the gamma-ray emitting region of the GRB has been hypothesized as well. In this hadronic acceleration model, it is predicted that protons may interact with gamma-ray photons to produce a burst of neutrinos at energy ∼10^14 eV during prompt emission and energy ∼10^18 eV during afterglow emission. Several experimental searches for these high energy neutrinos have been conducted and no GRB neutrinos have yet been found. The analytical prediction for neutrino flux has been replaced with a more thorough numerical prediction for neutrino flux. The neutron model of GRBs, where only neutrons can escape the GRB and reach Earth as cosmic rays, has been ruled out by the experimental work of IceCube and ANTARES. Upgraded versions of current experiments such as IceCube, ANTARES, ANITA and ARA, as well as new experiments such as KM3NeT, are preparing to probe and further constrain the fireball paradigm of GRB neutrino production. This review includes: Introduction Early theoretical predictions for neutrino fluences due to GRBs Overview of high energy neutrino experiments and related physics Experimental searches for high energy neutrinos from GRBs Prospects for detection of high energy neutrinos from GRBs High Energy Neutrinos from Gamma Ray Bursts: Theoretical Predictions, Experimental Searches, and Prospects for Detection was originally written as a review submitted for my Ph.D. candidacy paper on Nov 23, 2015. It has been edited for a "Short Read" on Amazon Kindle Direct Publishing in Oct 2020. It is a public domain work. Special thanks to the Connolly group at Ohio State University (OSU) and the physics and astronomy departments at OSU. Moreover, I am grateful for the contribution of each and every scientist and author listed in the "References" section of this review. This review would not be possible without their published science and hard work. Please let me know if you find any mistakes or problems, I will fix it. My email is [email protected]. I am happy for this to be a living document. I am anxious to improve it but feel that it needs to be out at this point before that can happen.
Book Synopsis A la recherche des neutrinos by : Antoine Kouchner
Download or read book A la recherche des neutrinos written by Antoine Kouchner and published by Dunod. This book was released on 2018-09-12 with total page 203 pages. Available in PDF, EPUB and Kindle. Book excerpt: Le neutrino est l'une des particules élémentaires du modèle standard de la physique des particules. Son existence a été prédite en 1930 par Wolfgang Pauli et depuis les physiciens n'ont eu de cesse d'essayer de le détecter expérimentalement car cette particule étrange, sans charge, de masse quasi nulle mais hautement énergétique, produite lors de phénomènes violents du cosmos, pourrait permettre de percer bien des mystères de notre univers. Antoine Kouchner et Stéphane Lavignac retracent l'histoire passionnante du neutrino et nous font découvrir les grandes expériences en cours et à venir pour détecter ce messager de l'infiniment grand et de l'infiniment petit.
Book Synopsis Study of Particle Production and Capture for a Neutrino Factory by : Simone Silvano Gilardoni
Download or read book Study of Particle Production and Capture for a Neutrino Factory written by Simone Silvano Gilardoni and published by . This book was released on 2004 with total page 179 pages. Available in PDF, EPUB and Kindle. Book excerpt: L'Usine à Neutrinos est une des possibles options pour le futur du CERN après LHC. Son but est de générer le faisceau de neutrinos le plus intense jamais produit. On pourrait étudier les oscillations de neutrinos et peut-être observer la violation de CP dans le secteur leptonique.
Book Synopsis Neutrinos, Dark Matter and the Universe by : Thierry Stolarczyk
Download or read book Neutrinos, Dark Matter and the Universe written by Thierry Stolarczyk and published by . This book was released on 1997 with total page 440 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Neutrinos written by François Vannucci and published by EDP Sciences. This book was released on 2023-10-10T00:00:00+02:00 with total page 338 pages. Available in PDF, EPUB and Kindle. Book excerpt: Mille milliards de neutrinos traversent chaque seconde ma main sans que je n’en ressente le moindre effet, et cela de jour comme de nuit. Ils proviennent du Soleil et l’épaisseur de la Terre ne peut pas les arrêter. Sans charge électrique et de masse quasi nulle, ils possèdent des propriétés très spéciales qui en font les plus fascinantes des particules élémentaires. Malgré leur comportement quasi fantomatique en raison de leurs très faibles interactions, les neutrinos jouent un rôle majeur en physique des particules, en astrophysique et en cosmologie. Ce livre relate l’histoire des neutrinos, depuis leur prédiction théorique par W. Pauli en 1930 jusqu’aux expériences les plus récentes de physique des particules. Il décrit les diverses sources de neutrinos : Soleil, Terre, accélérateurs, réacteurs nucléaires, supernovae... Des études s’étendant sur des dizaines d’années ont accumulé un ensemble déjà considérable de connaissances, certaines encore déroutantes et mystérieuses. Enfin, l’ouvrage met l’accent sur les nouvelles expériences en cours, encore plus précises, qui nous donneront peut-être une intuition sur les clés des grandes énigmes de la physique contemporaine : où est passée l’antimatière ? d’où provient l’énergie sombre ? ou encore, qu’est-ce que l’énergie noire qui cause l’accélération de l’Univers ?
Book Synopsis '86 Massive Neutrinos in Astrophysics and in Particle Physics by : Orrin Fackler
Download or read book '86 Massive Neutrinos in Astrophysics and in Particle Physics written by Orrin Fackler and published by . This book was released on 1986 with total page 732 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Etude des sursauts gamma à partir des neutrinos de haute-énergie avec le télescope ANTARES by : Gabrielle Lelaizant
Download or read book Etude des sursauts gamma à partir des neutrinos de haute-énergie avec le télescope ANTARES written by Gabrielle Lelaizant and published by . This book was released on 2018 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Le télescope ANTARES, déployé en mer Méditerranée à 2500 m de profondeur, est destiné à la détection de neutrinos cosmiques de haute-énergie. Le positionnement du détecteur est assuré par un système acoustique qui permet d'atteindre une précision de quelques centimètres par triangulation des distances caractéristiques des couples de modules acoustiques. Parmi les sources astrophysiques recherchées figurent les sursauts Gamma, phénomènes cataclysmiques signant la formation d'un trou noir, suscepyibles d'émettre des neutrinos détectables par ANTARES. Le développement d'une méthode d'analyse dédiée à ce type de signal est étudié dans ce travail dans un but de recherche de corrélation entre émissions gamma (détectées par des satellites) et neutrinos issus des sursauts Gamma.
Book Synopsis Particle Production by Neutrinos. [25 GeV, Review]. by :
Download or read book Particle Production by Neutrinos. [25 GeV, Review]. written by and published by . This book was released on 1979 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: A review is given of particle production by neutrinos in charged-current inclusive and exclusive channels. The production rates for various particles in neutrino-nucleon interactions at a beam energy of 25 GeV are compared. The mesons are, of course, dominated by pion production. The p°(760) rate is an order of magnitude smaller. Strange and charm pseudoscalar mesons are a further factor of two down in rate. The strange vector mesons are suppressed by more than an order of magnitude relative to K° production; however, the charmed D*(2010) is only a factor of two smaller in rate than the D°(1860). With regards to the baryons, most of them are, of course, nucleons. The .lambda.° and Y*(1385) rates are down by one and two orders of magnitudes, respectively. The lower limit on the charmed .sigma./sub c//sup + +/ baryon rate is similar to the Y*(1385) rate. Finally, the quasielastic and one-pion production exclusive channels have about the same cross section as that of the D*; associated production of strange particles in the .nu.n .-->. .mu.−K+.lambda. channel and the .delta. S = +.delta cap omega. process .nu.p .-->. .mu.−pK+ are down by factors of five and twenty, respectively, compared to the quasielastic cross section.
Book Synopsis Axion-Assisted Production of Sterile Neutrino Dark Matter by :
Download or read book Axion-Assisted Production of Sterile Neutrino Dark Matter written by and published by . This book was released on 2016 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Sterile neutrinos can be generated in the early universe through oscillations with active neutrinos and represent a popular and well-studied candidate for our universe's dark matter. Stringent constraints from X-ray and gamma-ray line searches, however, have excluded the simplest of such models. In this letter, we propose a novel alternative to the standard scenario in which the mixing angle between the sterile and active neutrinos is a dynamical quantity, induced through interactions with a light axion-like field. As the energy density of the axion-like particles is diluted by Hubble expansion, the degree of mixing is reduced at late times, suppressing the decay rate and easily alleviating any tension with X-ray or gamma-ray constraints. We present a simple model which illustrates the phenomenology of this scenario, and also describe a framework in which the QCD axion is responsible for the production of sterile neutrinos in the early universe.
Book Synopsis The Production of Neutrinos and Neutrino-like Particle in Proton-nucleus Interactions by : John Patrick Dishaw
Download or read book The Production of Neutrinos and Neutrino-like Particle in Proton-nucleus Interactions written by John Patrick Dishaw and published by . This book was released on 1979 with total page 147 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Detection of Neutrinos from Gamma-Ray Bursts by : Maria Constance Bouwhuis
Download or read book Detection of Neutrinos from Gamma-Ray Bursts written by Maria Constance Bouwhuis and published by . This book was released on 2005 with total page 122 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Studies Beyond the Standard Model by : Gowri Kurup
Download or read book Studies Beyond the Standard Model written by Gowri Kurup and published by . This book was released on 2020 with total page 154 pages. Available in PDF, EPUB and Kindle. Book excerpt: This dissertation studies aspects of three of the biggest unsolved problems with the Standard Model of Particle Physics: the matter-antimatter asymmetry in the universe, neutrino masses, and dark matter. While the SM has been very successful in explaining most experimental results, it does not provide a satisfactory solution to the matter -- anti-matter asymmetry problem. One of the simplest and most elegant solutions to this problem is electroweak baryogenesis. An addition to the Standard Model of a real, gauge-singlet scalar field, coupled via a Higgs portal interaction, can reopen the possibility of a strongly first-order electroweak phase transition and successful electroweak baryogenesis. In the first part of this work, we study a subset of such models and evaluate the bubble nucleation temperature throughout the parameter space where a first-order transition is expected. In addition, we also look at vacuum bubble wall velocity and how it impacts baryogenesis in these models. Another limitation of the SM is that it models the neutrinos as massless, even though experiments have shown that this is not true. The mass generation mechanism of neutrinos is still unknown, and popular see-saw models with Majorana masses have proven difficult to test. The Clockwork mechanism can be used to generate Dirac masses, and can explain the smallness of neutrino masses without introducing unnaturally small input parameters. In the second part of this thesis, we study the simplest Clockwork neutrino model, the "uniform" clockwork, as well as a broader class of "generalized" clockwork models. We derive constraints on such models from lepton-flavor violating processes, as well as precision electroweak fits. Further, we analyse simulated collider data and study the prospects for detection of the models at the LHC and future colliders. The third and final part of this thesis is about Dark Matter. All the evidence we have for Dark Matter (DM) is through gravitational interactions, and its microscopic nature is one of the most urgent questions in theoretical physics. We present an unconventional model for the production of dark matter: the conformal freeze-in scenario. At the time when the dark sector is populated in the early universe, it is described by a strongly coupled conformal field theory and as such, cannot be described by particle states. As the universe cools, cosmological phase transitions in the standard model sector or loop induced deformations of the conformal field theory induce conformal symmetry breaking and confinement in the dark sector. One of the resulting dark bound states is stable on the cosmological time scales and plays the role of dark matter.
Book Synopsis High Energy Neutrinos from Gamma-ray Bursts by : Shan Gao
Download or read book High Energy Neutrinos from Gamma-ray Bursts written by Shan Gao and published by . This book was released on 2014 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Neutrino astronomy began with the detection of solar neutrinos, supernova neutrinos(SN1987A) and more recently the 37 events in IceCube which are very likelyto be an astrophysical origin. The result from IceCube is perhaps the most excitingdiscovery of the year 2013, capping a several decades long search. Variousastrophysical candidates have been proposed as sources of high energy neutrinos,although the origin of the IceCube neutrinos remains a mystery. Gamma-raybursts (GRBs), the most energetic explosions in the universe, were considered asthe most promising source for high energy cosmic rays and neutrinos (with AGNs).However, a previous search of GRB neutrinos by IceCube surprised the GRB communitywith negative results, challenging the simple standard picture of GRBprompt emission which is called the \internal shock" model. In this thesis we givea closer investigation of this model as well as several leading alternative models.With a careful consideration of the particle physics and the model parameters weshow that the previous negative result with GRB neutrinos is not surprising, andonly those models with extremely optimistic parameters can be ruled out. Wepredict that GRBs are unlikely to be the sole sources of the IceCube events, butsignals of GRB neutrinos may be detected in the near future, with the neutrinotelescopes such as IceCube/DeepCore, KM3Net, ARA, ARIANNA, ANITA etc.
Book Synopsis Neutrinos and the Present-day Universe by : Thierry Montmerle
Download or read book Neutrinos and the Present-day Universe written by Thierry Montmerle and published by . This book was released on 1986 with total page 194 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Neutrinos and the Present-day Universe by : Thierry Montmerle
Download or read book Neutrinos and the Present-day Universe written by Thierry Montmerle and published by . This book was released on 1986 with total page 194 pages. Available in PDF, EPUB and Kindle. Book excerpt:
![Download Particle Production by Neutrinos. [25 GeV, Review]. PDF Online Free](https://books.google.com/books/content/images/frontcover/nu0QnQAACAAJ?fife=w200-h370)
