900 research outputs found
Lepton Flavor Violation in a Long Baseline Experiment
We evaluate the size of a coupling for a lepton flavor violating interaction
with neutrinos (nLFV) in the minimal supersymmetric standard model with
right-handed neutrinos (MSSMRN). It is expected that the nLFV interactions are
detected in a long baseline neutrino oscillation experiment. We here deal with
in
channel at a neutrino factory. First, we show the numerical study on
feasibility to observe such interaction and point out that we can search for
them with some oscillation channels. Next, we make a numerical calculation for
the size of the nLFV coupling in the framework of the MSSMRN. A long baseline
experiment is sensitive not only to the lepton mixings in the standard model
but also to new physics effect.Comment: 3 pages, 3 figures, to appear in the proceedings of the 6th
International Workshop on Neutrino Factory and Superbeams NuFact04,
Osaka,Japan, July 26 - August 1, 200
The Geological Map and Stratigraphic Relationship of the Upper Devonian Ainosawa Formation in the Soma District, Fukushima Prefecture, Japan.
1 In this paper, the auther publishes the geological map of Upper Devonian deposit in Sōma Paleozoic rocks, which has been unpublished up to this time. 2 The facts in the field show that, at present time, the Ainosawa formation is in contact with the Matsugadaira group by fault, but from the fact mentioned in 3-1, 3-2 and 3-3, original relationship between both rocks was probably unconformable and the Matsugadaira group had been suffered regional weak metamorphism before the deposition in Late Devonian.Article信州大学教養部紀要. 第二部, 自然科学 8: 5-14(1974)departmental bulletin pape
Parametric Resonance in Neutrino Oscillation: A Guide to Control the Effects of Inhomogeneous Matter Density
Effects of the inhomogeneous matter density on the three-generation neutrino
oscillation probability are analyzed. Realistic profile of the matter density
is expanded into a Fourier series. Taking in the Fourier modes one by one, we
demonstrate that each mode has its corresponding target energy. The high
Fourier mode selectively modifies the oscillation probability of the low-energy
region. This rule is well described by the parametric resonance between the
neutrino oscillation and the matter effect. The Fourier analysis gives a simple
guideline to systematically control the uncertainty of the oscillation
probability caused by the uncertain density of matter. Precise analysis of the
oscillation probability down to the low-energy region requires accurate
evaluation of the Fourier coefficients of the matter density up to the
corresponding high modes.Comment: 7 pages, 5 eps figure
Impact of non-standard neutrino interactions on future oscillation experiments
We study the performance of reactor and superbeam neutrino experiments in the
presence of non-standard interactions (NSI). We find that for some non-standard
terms, reactor and superbeam experiments would yield conflicting result in the
theta-13 determination, while in other cases, they may agree well with each
other, but the resulting value for theta-13 could be far from the true value.
Throughout our discussion, we pay special attention to the impact of the
complex phases of the NSI parameters and to the observations at the near
detector.Comment: Submitted for the SUSY07 proceedings, 4 pages, 4 figure
Fabrication of various electroless Ni-P alloy/multiwalled carbon nanotube composite films on an acrylonitrile butadiene styrene resin
Ni-P alloy/multiwalled carbon nanotube (MWCNT) composite films were fabricated on acrylonitrile butadiene styrene (ABS) resin by electroless plating and their microstructures, adhesion strengths, and friction properties were investigated. Various types of MWCNTs were used. In addition, various electroless plating baths were prepared to form Ni-P alloy matrices with various phosphorus contents. To enhance the adhesion strength, the ABS resin substrate was subjected to roughening treatment. The microstructures of the composite films were examined by scanning electron microscopy and X-ray diffraction. Their adhesion strengths were measured by tensile tests. The friction properties of the composite films were investigated using the ball-on-plate method. Ni-P alloy/MWCNT composite films containing various types of MWCNTs and with Ni-P alloy matrices having various phosphorus contents were fabricated on the ABS resin substrates by electroless deposition. The adhesion strength between the Ni-P alloy/MWCNT composite films and the ABS resin substrate was more than 1300 N cm(-2). The Ni-P alloy/MWCNT composite films had considerably lower friction coefficients than the Ni-P alloy films. The friction coefficients of the composite films were significantly affected by the type of MWCNTs used.ArticleSURFACE & COATINGS TECHNOLOGY 205: 3175-3181(2011)journal articl
Non-standard neutrino interactions in reactor and superbeam experiments
The formalism of non-standard four-fermion interactions provides a
convenient, model-independent way of parameterizing a wide class of ``new
physics'' scenarios. In this article, we study the performance of reactor and
superbeam neutrino experiments in the presence of such non-standard
interactions (NSI). Due to interference between the standard and non-standard
amplitudes, sizeable effects are to be expected if the NSI parameters are close
to their current upper limits. We derive approximate formulas for the relevant
oscillation probabilities including NSI, and show how the leading effects can
be understood intuitively even without any calculations. We will present a
classification of all possible NSI according to their impact on reactor and
superbeam experiments, and it will turn out that these experiments are highly
complementary in terms of their sensitivity to the non-standard parameters. The
second part of the paper is devoted to detailed numerical simulations, which
will demonstrate how a standard oscillation fit of the mixing angle theta-13
may fail if experimental data is affected by NSI. We find that for some
non-standard terms, reactor and superbeam experiments would yield seemingly
conflicting results, while in other cases, they may agree well with each other,
but the resulting value for theta-13 could be far from the true value. This
offset may be so large that the true theta-13 is even ruled out erroneously. In
the last section of the paper, we demonstrate that reactor and superbeam data
can actually establish the presence of non-standard interactions. Throughout
our discussion, we pay special attention to the impact of the complex phases,
and of the near detectors.Comment: 24 pages, 12 figures, 2 tables, RevTeX 4, minor clarifications,
matches published versio
Fabrication of Various Electroless Ni-P Alloy/Multiwalled Carbon Nanotube Composite Films and Their Frictional Properties
Ni-P alloy/multiwalled carbon nanotube (MWCNT) composite films were fabricated using an electroless plating method, and their microstructures and frictional properties were studied. MWCNTs of various sizes were used and three kinds of electroless plating baths were prepared to form the Ni-P alloy matrix with varying phosphorus contents. Heat- treatments of the composite films were also carried out. The microstructures of the composite films were examined by scanning electron microscopy and X-ray diffraction. Frictional properties of the composite films were investigated using a ball-on-plate method. Ni-P alloy/MWCNT composite films with different phosphorus contents, classified as high phosphorus (12-13 mass %), medium phosphorus (6-8 mass %), and low phosphorus (2-4 mass %) types, were fabricated using electroless deposition. The Ni-P alloy/MWCNT composite films showed lower friction coefficients compared to Ni-P alloy films with the same phosphorus content both before and after heat-treatment. The friction coefficients of the films were affected by the microstructure and size of the MWCNTs, the composition of the Ni-P alloy matrix, and the heat-treatment.ArticleJOURNAL OF THE ELECTROCHEMICAL SOCIETY 157: D570-D576(2010)journal articl
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