Short-baseline Neutrino Oscillation Waves in Ultra-large Liquid Scintillator Detectors

Details Short-baseline Neutrino Oscillation Waves in Ultra-large Liquid Scintillator Detectors Short-baseline Neutrino Oscillation Waves in Ultra-large Liquid Scintillator Detectors

2011-05-25

arxiv.org/abs/1105.4984v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

24 pages, 8 figures, 9 tables

Scientific paper

Powerful new multi-kiloton liquid scintillator neutrino detectors, including NOvA and LENA, will come on-line within the next decade. When these are coupled with a modest-power decay-at-rest (DAR) neutrino source at short-baseline, these detectors can decisively address the recent ambiguous signals for neutrino oscillations at high Delta m^2. These detectors are > 50 m long, and so with a DAR beam, the characteristic oscillation wave will be apparent over the length of the detector, providing a powerful verification of the oscillation phenomena. LENA can simultaneously perform numubar to nuebar appearance and nue to nue disappearance searches with unprecedented sensitivity. NOvA is likely limited to nue disappearance given its present design, but also has excellent sensitivity in the high Delta m^2 region. For the appearance channel, LENA could provide a stringent test of the LSND and MiniBooNE signal regions at > 5 sigma with a reduced fiducial volume of 5 kt and a 10 kW neutrino source. In addition, the LENA and NOvA disappearance sensitivities in nue mode are complementary to the recent reactor anomaly indicating possible nuebar disappearance and would cover this possible oscillation signal at the 3 sigma level.

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