24 research outputs found
Shedding light on LMA-Dark solar neutrino solution by medium baseline reactor experiments: JUNO and RENO-50
In the presence of Non-Standard neutral current Interactions (NSI) a new
solution to solar neutrino anomaly with appears. We
investigate how this solution can be tested by upcoming intermediate baseline
reactor experiments, JUNO and RENO-50. We point out a degeneracy between the
two solutions when both hierarchy and the octant are flipped. We
then comment on how this degeneracy can be partially lifted by long baseline
experiments sensitive to matter effects such as the NOvA experiment.Comment: 9 pages, 2 figure
Measuring Dirac CP-violating phase with intermediate energy beta beam facility
Taking the established nonzero value of , we study the
possibility of extracting the Dirac CP-violating phase by a beta beam facility
with a boost factor . We compare the performance of different
setups with different baselines, boost factors and detector technologies. We
find that an antineutrino beam from He decay with a baseline of km
has a very promising CP discovery potential using a 500 kton Water Cherenkov
(WC) detector. Fortunately this baseline corresponds to the distance between
FermiLAB to Sanford underground research facility in South Dakota.Comment: 14 pages, 7 figure
Revisiting the quantum decoherence scenario as an explanation for the LSND anomaly
We propose an explanation for the LSND anomaly based on quantum decoherence,
postulating an exponential behavior for the decoherence parameters as a
function of the neutrino energy. Within this ansatz decoherence effects are
suppressed for neutrino energies above 200 MeV as well as around and below few
MeV, restricting deviations from standard three-flavour oscillations only to
the LSND energy range of 20--50 MeV. The scenario is consistent with the global
data on neutrino oscillations, alleviates the tension between LSND and KARMEN,
and predicts a null-result for MiniBooNE. No sterile neutrinos are introduced,
conflict with cosmology is avoided, and no tension between short-baseline
appearance and disappearance data arises. The proposal can be tested at planned
reactor experiments with baselines of around 50 km, such as JUNO or RENO-50.Comment: 14 pages, 6 figures; version appeared in JHE