Resolving the Mass Hierarchy with Atmospheric Neutrinos using a Liquid Argon Detector

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dc.creatorGandhi, Raj
dc.creatorGhoshal, Pomita
dc.creatorGoswami, Srubabati
dc.creatorSankar, S Uma
dc.date2008-07-17
dc.date2008-07-24
dc.date.accessioned2026-07-07T11:44:52Z
dc.date.available2026-07-07T11:44:52Z
dc.descriptionWe explore the potential offered by large-mass Liquid Argon detectors for determination of the sign of Delta m_{31}^2, or the neutrino mass hierarchy, through interactions of atmospheric neutrinos. We give results for a 100 kT sized magnetized detector which provides separate sensitivity to ν_μ, \barν_μand, over a limited energy range, to ν_e, \barν_e.We also discuss the sensitivity for the unmagnetized version of such a detector. After including the effect of smearing in neutrino energy and direction and incorporating the relevant statistical,theoretical and systematic errors, we perform a binned χ^2 analysis of simulated data. The χ^2 is marginalized over the presently allowed ranges of neutrino parameters and determined as a function of θ_{13}. We find that such a detector offers superior capabilities for hierarchy resolution, allowing a > 4σdetermination for a 100 kT detector over a 10 year running period for values of \sin^2 2θ_{13} \ge 0.05. For an unmagnetized detector, a 2.5σhierarchy sensitivity is possible for \sin^2 2θ_{13} = 0.04.
dc.description13 pages, 3 figures, typing error in the abstract corrected, no other change
dc.identifierhttps://arxiv.org/abs/0807.2759
dc.identifierhttp://arxiv.org/abs/0807.2759
dc.identifierPhys.Rev.D78:073001,2008
dc.identifierdoi:10.1103/PhysRevD.78.073001
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/201704
dc.subjectHigh Energy Physics - Phenomenology
dc.titleResolving the Mass Hierarchy with Atmospheric Neutrinos using a Liquid Argon Detector
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