Oscilação de neutrinos no formalismo de pacotes de onda / Neutrino oscillation in the wave packet approach
AUTOR(ES)
Fernando Rossi Torres
DATA DE PUBLICAÇÃO
2006
RESUMO
Generally, we study neutrino oscillation phenomenon using the plane wave formalism, which successfully treats the solar neutrino case, the reactor and accelerator cases. However, a more complete description of neutrino oscillation must consider a wave packet approach. This work analyses both formalisms: the plane wave and the wave packet in vacuum and matter. We have calculated the oscillation and coherence length to discuss if wave packets are or are not necessary for solar neutrinos, reactor and accelerators neutrinos, supernova neutrinos and ultra-high energy neutrinos. We also have discussed the formation mechanism of supernova and the role of neutrinos in its evolution dynamics. As we have little information about supernova neutrinos, only 11 events detected by Kamiokande and 8 events by IMB detector, we have confronted the plane wave formalism with the wave packet formalism of neutrino oscillation inside a supernova with 15 solar masses, because we desire to know the relevance of the wave packet treatment and verify if this formalism will provide any additional information about neutrino oscillation in supernova
ASSUNTO(S)
flavor oscillation supernova (estrela) pacotes de onda wave packet oscilação de sabor supernova (estrela) neutrinos neutrinos
ACESSO AO ARTIGO
http://libdigi.unicamp.br/document/?code=vtls000385553Documentos Relacionados
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