5,732 research outputs found
Pinning down neutrino oscillation parameters in the 2-3 sector with a mgnetised atmospheric neutrino detector: a new study
We determine the sensitivity to neutrino oscillation parameters from a study
of atmospheric neutrinos in a magnetised detector such as the ICAL at the
proposed India-based Neutrino Observatory. In such a detector that can {\em
separately} count and -induced events, the
relatively smaller (about 5\%) uncertainties on the neutrino--anti-neutrino
flux ratios translate to a constraint in the analysis that results in
a significant improvement in the precision with which neutrino oscillation
parameters such as can be determined. Such an effect is
unique to all magnetisable detectors and constitutes a great advantage in
determining neutrino oscillation parameters using such detectors. Such a study
has been performed for the first time here. Along with an increase in the
kinematic range compared to earlier analyses, this results in sensitivities to
oscillation parameters in the 2--3 sector that are comparable to or better than
those from accelerator experiments where the fluxes are significantly higher.
For example, the precisions on and
achievable for 500 kTon yr exposure of ICAL are
and respectively for both normal and inverted
hierarchies. The mass hierarchy sensitivity achievable with this combination
when the true hierarchy is normal (inverted) for the same exposure is
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Comparative study of the electron conduction in azulene and naphthalene
We have studied the feasibility of electron conduction in azulene molecule
and compared with that in its isomer naphthalene. We have used non-equilibrium
Green's function formalism to measure the current in our systems as a response
of the external electric field. Parallely we have performed the Gaussian
calculations with electric field in the same bias window to observe the impact
of external bias on the wave functions of the systems. We have found that, the
conduction of azulene is higher than that of naphthalene inspite of its
intrinsic donor-acceptor property, which leads a system to more insulating
state. Due to stabilization through charge transfer the azulene system can be
fabricated as a very effective molecular wire. Our calculations shows the
possibility of huge device application of azulene in nano-scale instruments.Comment: 6 pages, 8 figure
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