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Parameter degeneracy in flavor-dependent reconstruction of supernova neutrino fluxes

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Parameter degeneracy in flavor-dependent reconstruction of supernova neutrino fluxes

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dc.contributor.author Minakata, Hisakazu
dc.contributor.author Nunokawa, Hiroshi
dc.contributor.author Tomàs, Ricard
dc.contributor.author Furtado Valle, José Wagner
dc.date.accessioned 2015-09-30T09:33:43Z
dc.date.available 2015-09-30T09:33:43Z
dc.date.issued 2008
dc.identifier.citation Minakata, Hisakazu Nunokawa, Hiroshi Tomàs, Ricard Furtado Valle, José Wagner 2008 Parameter degeneracy in flavor-dependent reconstruction of supernova neutrino fluxes Journal Of Cosmology And Astroparticle Physics 2008 12 006
dc.identifier.uri http://hdl.handle.net/10550/47464
dc.description.abstract We reexamine the possibility of reconstructing the initial fluxes of supernova neutrinos emitted in a future core-collapse galactic supernova explosion and detected in a Megaton-sized water Cherenkov detector. A novel key element in our method is the inclusion, in addition to the total and the average energies of each neutrino species, of a 'pinching' parameter characterizing the width of the distribution as a fit parameter. We uncover in this case a continuous degeneracy in the reconstructed parameters of supernova neutrino fluxes at the neutrinosphere. We analyze in detail the features of this degeneracy and show how it occurs irrespective of the parametrization used for the distribution function. Given that this degeneracy is real we briefly comment on possible steps towards resolving it, which necessarily requires going beyond the setting presented here.
dc.language.iso eng
dc.relation.ispartof Journal Of Cosmology And Astroparticle Physics, 2008, vol. 2008, num. 12, p. 006
dc.subject Física
dc.title Parameter degeneracy in flavor-dependent reconstruction of supernova neutrino fluxes
dc.type journal article es_ES
dc.date.updated 2015-09-30T09:33:43Z
dc.identifier.doi 10.1088/1475-7516/2008/12/006
dc.identifier.idgrec 048299
dc.rights.accessRights open access es_ES

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