On Probing theta_{23} in Neutrino Telescopes

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dc.creatorChoubey, Sandhya
dc.creatorNiro, Viviana
dc.creatorRodejohann, Werner
dc.date2008-03-04
dc.date2008-04-30
dc.date.accessioned2026-07-07T11:40:37Z
dc.date.available2026-07-07T11:40:37Z
dc.descriptionAmong all neutrino mixing parameters, the atmospheric neutrino mixing angle theta_{23} introduces the strongest variation on the flux ratios of ultra high energy neutrinos. We investigate the potential of these flux ratio measurements at neutrino telescopes to constrain theta_{23}. We consider astrophysical neutrinos originating from pion, muon-damped and neutron sources and make a comparative study of their sensitivity reach to theta_{23}. It is found that neutron sources are most favorable for testing deviations from maximal theta_{23}. Using a chi^2 analysis, we show in particular the power of combining (i) different flux ratios from the same type of source, and also (ii) combining flux ratios from different astrophysical sources. We include in our analysis ``impure'' sources, i.e., deviations from the usually assumed initial (1 : 2 : 0), (0 : 1 : 0) or (1 : 0 : 0) flux compositions.
dc.description17 pages, 5 figures. Added discussion on experimental errors. To appear in PRD
dc.identifierhttps://arxiv.org/abs/0803.0423
dc.identifierhttp://arxiv.org/abs/0803.0423
dc.identifierPhys.Rev.D77:113006,2008
dc.identifierdoi:10.1103/PhysRevD.77.113006
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/200307
dc.subjectHigh Energy Physics - Phenomenology
dc.subjectAstrophysics
dc.subjectHigh Energy Physics - Experiment
dc.titleOn Probing theta_{23} in Neutrino Telescopes
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