Probing non-standard neutrino interactions with supernova neutrinos at Hyper-K

Probing neutrino non–standard interactions with atmospheric neutrino data

We have reconsidered the atmospheric neutrino anomaly in light of the latest data from Super–Kamiokande contained events and from Super–Kamiokande and MACRO up-going muons. We have reanalysed the proposed solution to the atmospheric neutrino anomaly in terms of non–standard neutrino–matter interactions (NSI) as well as the standard νμ → ντ oscillations (OSC). Our statistical analysis shows that...

Probing neutrino mass hierarchies and phi(13) with supernova neutrinos

Probing neutrino mass hierarchies and φ13 with supernova neutrinos

We investigate the feasibility of probing the neutrino mass hierarchy and the mixing angle φ13 with the neutrino burst from a future supernova. An inverse power-law density ρ ∼ r with varying n is adopted in the analysis as the density profile of a typical core-collapse supernova. The survival probabilities of νe and ν̄e are shown to reduce to two-dimensional functions of n and φ13. It is found ...

Probing Non-standard Neutrino Physics at Neutrino Factory and T2kk

We discuss ways to explore non-standard interactions (NSI) which neutrinos may possess by expressing them as effective four Fermi operators with coefficient of the order of (MW /MNP ) 2 ∼ 10(10) for energy scales of new physics as MNP ∼ 1(10) TeV. Neutrino Factory is a prime candidate for such apparatus that can reach to the extreme precision. I describe a two detector setting, one at baseline ...

Probing Non-Standard Couplings of Neutrinos at the Borexino Detector

The present experimental status does not exclude weak-strength non-standard interactions of neutrinos with electrons. These interactions can be revealed in solar neutrino experiments. Our discussion covers several aspects related to this issue. First, we perform an analysis of the Super Kamiokande and SNO data to investigate their sensitivity to such interactions. Second, we suggest that the Bo...