Atmospheric Neutrinos
Mostrando 1-6 de 6 artigos, teses e dissertações.
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1. Fenomenologia de neutrinos atmosféricos com neutrinos de massa variável / Atmospheric neutrino phenomenology with mass varying neutrinos
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 choque neutrinonucleon para processos de espalhamento via corrente carregada para todo o interva
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 07/05/2012
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2. Effects of solar neutrinos scale on atmospheric neutrino flux
In this work we try to understand the phenomena of neutrino oscillations, and use this to obtain a more precise description of the atmospheric neutrino data. The two neutrino oscillation mechanism solves the problem of the up-down muon neutrino asymmetry successfully. Our main motivation is to describe the excess of events of electron-neutrino type found in
Brazilian Journal of Physics. Publicado em: 2007-07
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3. Neutrino physics: the roadmap for precision physics
In the last years, we experienced a complete change of the view of weak interaction physics. Robust results from many experiments as Super-Kamiokande, KamLAND, SNO, K2K, show us that the neutrinos have the remarkable phenomena of oscillations, a quantum interference mechanism that operates to distances as large as 100 km and even bigger distances. From this
Brazilian Journal of Physics. Publicado em: 2006-12
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4. Fenomenologia de neutrinos atmosfericos / Phenomenology of atmospheric neutrinos
Neste trabalho buscamos entender o fenômeno de oscilações de neutrinos e como exemplo tentamos descrever os dados dos neutrinos atmosféricos Nossa motivação principal é descrever o excesso de eventos do tipo neutrino eletrônico encontrado nos dados do detector SuperKamiokande (SK)a baixas energias quando comparados com o formalismo de oscilação de
Publicado em: 2006
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5. Neutrino physics and astrophysics with the MACRO experiment at the Gran Sasso lab
The results of the MACRO experiment on atmospheric neutrino oscillations are presented and discussed. The data concern different event topologies with average neutrino energies of ~ 4 and ~50 GeV. The Multiple Coulomb Scattering of muons in the MACRO absorbers was used to estimate the neutrino energy of each event of the higher energy sample. The angular dis
Brazilian Journal of Physics. Publicado em: 2003-06
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6. Descoerencia na propagação de neutrinos
In this work we discuss the Neutrino temporal evolution adding the decoherence phenomenon to flavor oscillation. We describe very carefully how the phenomenological decoherence should be added to the evolution and what are the consequences and possibilities that this choice bring to us. Imposing decoherence we found three new dynamics to Neutrino system that
Publicado em: 2003