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Determining the oscillation parameters by Solar neutrinos and KamLAND

Nunokawa, H ; Teves, W J C ; Funchal, R Zukanovich

arXiv.org, 2003-04

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Título:
Determining the oscillation parameters by Solar neutrinos and KamLAND
Autor: Nunokawa, H ; Teves, W J C ; Funchal, R Zukanovich
Assuntos: Energy spectra ; Error analysis ; Islands ; Neutrinos ; Nuclear energy ; Nuclear reactors ; Parameters ; Solar neutrinos ; Solar oscillations
É parte de: arXiv.org, 2003-04
Descrição: The neutrino oscillation experiment KamLAND has given the first evidence for disappearance of \(\bar \nu_e\) coming from nuclear reactors. We have combined their data with all the solar neutrino data assuming two flavor neutrino mixing and obtained allowed parameter regions which are compatible with the so-called large mixing angle MSW solution to the solar neutrino problem. The allowed regions in the plane of mixing angle and mass squared difference are now split into two islands at 99% C.L. We have speculated how these two islands can be separated in the near future. We have shown that a 50% reduction of the error on SNO neutral-current measurement can be important in establishing in each of these islands the true values of these parameters lie. We also have simulated KamLAND positron energy spectrum after 1 year of data taking, assuming the current best fitted values of the oscillation parameters, combined it the with current solar neutrino data and showed how these two split islands can be modified.
Editor: Ithaca: Cornell University Library, arXiv.org
Idioma: Inglês

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