Neutrino oscillations at DUNE with improved energy reconstruction

Romeri, Valentina De; Fernández‐Martínez, E.; Sorel, M.

doi:10.1007/jhep09(2016)030

Cited by 50 publications

(51 citation statements)

References 58 publications

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“…The first degeneracy appears for the wrong octant of θ 23 , which would otherwise be correctly determined by the interplay between the appearance and disappearance channels at DUNE (see e.g., ref. [80]). We have checked that this degeneracy is characterized by non zero values of α τ e with a non-trivial phase around π.…”

Section: Jhep04(2017)153mentioning

confidence: 99%

Non-unitarity, sterile neutrinos, and non-standard neutrino interactions

Blennow

Coloma

Fernández‐Martínez

et al. 2017

J. High Energ. Phys.

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Abstract:The simplest Standard Model extension to explain neutrino masses involves the addition of right-handed neutrinos. At some level, this extension will impact neutrino oscillation searches. In this work we explore the differences and similarities between the case in which these neutrinos are kinematically accessible (sterile neutrinos) or not (mixing matrix non-unitarity). We clarify apparent inconsistencies in the present literature when using different parametrizations to describe these effects and recast both limits in the popular neutrino non-standard interaction (NSI) formalism. We find that, in the limit in which sterile oscillations are averaged out at the near detector, their effects at the far detector coincide with non-unitarity at leading order, even in presence of a matter potential. We also summarize the present bounds existing in both limits and compare them with the expected sensitivities of near-future facilities taking the DUNE proposal as a benchmark. We conclude that non-unitarity effects are too constrained to impact present or near future neutrino oscillation facilities but that sterile neutrinos can play an important role at long baseline experiments. The role of the near detector is also discussed in detail.

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Section: Jhep04(2017)153mentioning

confidence: 99%

Non-unitarity, sterile neutrinos, and non-standard neutrino interactions

Blennow

Coloma

Fernández‐Martínez

et al. 2017

J. High Energ. Phys.

Self Cite

205

310

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“…Here, we assumed the following values for the oscillation parameters [10], in agreement with the most recent global-fit results obtained by the NuFit collaboration [17]: sin 2 θ 12 = 0.310, sin 2 θ 13 = 0.02240, sin 2 θ 23 = 0.582, δ CP = 217 • = −2.50 rad, † Albeit not at all trivial and still under intense investigation, see, for example, Refs. [12,13]. Unless otherwise stated, we will assume these oscillation parameters to be the true values in our analyses going forward.…”

Section: The ν τ Sample At Dunementioning

confidence: 99%

Physics with beam tau-neutrino appearance at DUNE

et al. 2019

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We explore the capabilities of the upcoming Deep Underground Neutrino Experiment (DUNE) to measure ν τ charged-current interactions and the associated oscillation probability P (ν µ → ν τ ) at its far detector, concentrating on how such results can be used to probe neutrino properties and interactions. DUNE has the potential to identify significantly more ν τ events than all existing experiments and can use this data sample to nontrivially test the three-massive-neutrinos paradigm by providing complementary measurements to those from the ν e appearance and ν µ disappearance channels. We further discuss the sensitivity of the ν τ appearance channel to several hypotheses for the physics that may lurk beyond the three-massive-neutrinos paradigm: a non-unitary lepton mixing matrix, the 3 + 1 light neutrinos hypothesis, and the existence of non-standard neutral-current neutrino interactions. Throughout, we also consider the relative benefits of the proposed high-energy tune of the Long-Baseline Neutrino Facility (LBNF) beam-line.

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“…A qualitatively different method was put forward in Refs. [12,13]. In those papers, it was suggested to sum up the ionization charges from all particles in the hadronic shower, with no thresholds.…”

Section: Introductionmentioning

confidence: 99%

Understanding the energy resolution of liquid argon neutrino detectors

Friedland

2019

Phys. Rev. D

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Available estimates for the energy resolution of DUNE vary by as much as a factor of four. To address this controversy, and to connect the resolution to the underlying physical processes, we build an independent simulation pipeline for neutrino events in liquid argon, combining the public tools GENIE and FLUKA. Using this pipeline, we first characterize the channels of non-hermeticity of DUNE, including subthreshold particles, charge recombination, and nuclear breakup. Particular attention is paid to the role of neutrons, which are responsible for a large fraction of missing energy in all channels. Next, we determine energy resolution, by quantifying event-to-event stochastic fluctuations in missing energy. This is done for several sets of assumptions about the reconstruction performance, including those available in the literature. The resulting migration matrices, connecting true and reconstructed neutrino energies, are presented. Finally, we quantify the impact of different improvements on the experimental performance. For example, we show that dropping particle identification information degrades the resolution by a factor of two, while omitting charge deposits from de-excitation gammas worsens it by about 25%. In the future, this framework can be used to assess the impact of cross section uncertainties on the oscillation sensitivity.

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Neutrino oscillations at DUNE with improved energy reconstruction

Cited by 50 publications

References 58 publications

Non-unitarity, sterile neutrinos, and non-standard neutrino interactions

Non-unitarity, sterile neutrinos, and non-standard neutrino interactions

Physics with beam tau-neutrino appearance at DUNE

Understanding the energy resolution of liquid argon neutrino detectors

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