Effects of nonstandard neutrino interactions at PINGU

Abstract

Neutrino oscillation experiments in the past decades have greatly improved our knowledge on neutrinos by measuring the fundamental neutrino parameters. The ongoing and upcoming neutrino oscillation experiments are intended to pin down the neutrino mass hierarchy and to discover the leptonic CP violation. By means of neutrino oscillograms, we analyze the impact of non-standard neutrino interactions on neutrino oscillations in the Earth matter. The standard neutrino oscillation probabilities may be significantly changed by non-standard interaction parameters, and in particular, the CP-violating effects in the energy range E = 1 ∼ 20 GeV are greatly enhanced.In addition, the event rates of muon neutrinos in the proposed huge atmospheric neutrino experiment, PINGU at the South Pole, have been estimated in the presence of non-standard neutrino interactions. It has been found that the PINGU experiment has very good sensitivities to the non-standard neutrino interaction parameters.

Non-standard interactions with high-energy atmospheric neutrinos at IceCube

“…This has been the main goal of refs. [40,41,43,44,48,49], where the iceČerenkov IceCube neutrino observatory and/or its low energy extensions, the DeepCore or the future PINGU detectors, have been considered as the ideal targets where to test neutrino NSI, exploiting atmospheric neutrino fluxes. On the other hand, although at high-energies the standard neutrino oscillation phase, which is inversely proportional to the neutrino energy, is very small, in the presence of NSI, oscillations are not suppressed with energy and they only depend on the baseline.…”

Dissipative effect in long baseline neutrino experiments

“…The success of the model opened the opportunity for testing other kinds of effects in oscillation experiments [14][15][16][17][18][19][20][21]. So, considering the precision level that the next generation of experiments will achieve, the limits on each usual neutrino oscillation parameter will be very stringent and the space for new physics may also be lessened.…”

Measuring Dirac CP-violating phase with intermediate energy beta beam facility

“…[34]. The hierarchy can be determined by other experiments such as PINGU [35][36][37][38][39][40][41] or combining PINGU and DAYA Bay II results [42], so we assume that this hierarchy is known by the time that such a beta beam setup is ready. We study both normal and inverted hierarchies.…”

“…For the uncertainty of the mixing parameters, we take the values that will be achievable by forthcoming experiments. Namely, we take the following uncertainties: 0.4 % for θ 12 [44], 1.8 % for θ 13 [45], 2 % for θ 23 [46], 0.2 % for m 2 12 [44] and 0.7 % for m 2 13 [35][36][37][38][39][40]. As predefined by GLoBES, we use the matter profiles in [47,48].…”