103,054 research outputs found

    Investigating the sterile neutrino parameters with QLC in 3 + 1 scenario

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    In the scenario with four generation quarks and leptons and using a 3 + 1 neutrino model having one sterile and the three standard active neutrinos with a 4×44 \times 4 unitary transformation matrix, UPMNS4U_{PMNS_{4}}, we perform a model-based analysis using the latest global data and determine bounds on the sterile neutrino parameters i.e. the neutrino mixing angles. Motivated by our previous results, where, in a quark-lepton complementarity (QLC) model we predicted the values of θ13PMNS=(92+1)\theta_{13}^{PMNS}=(9_{-2}^{+1})^{\circ} and θ23PMNS=(40.600.3+0.1)\theta_{23}^{PMNS}=(40.60_{-0.3}^{+0.1})^{\circ}. In the QLC model the non-trivial correlation between CKM4CKM_4 and PMNS4PMNS_4 mixing matrix is given by the correlation matrix Vc4V_{c_{4}}. Monte Carlo simulations are performed to estimate the texture of Vc4V_{c4} followed by the calculation of PMNS4PMNS_4 using the equation, UPMNS4=(UCKM4.ψ4)1.Vc4U_{PMNS_{4}}= (U_{CKM_{4}} . \psi_{4})^{-1}.V_{c_{4}}, where ψ4\psi_{4} is a diagonal phase matrix. The sterile neutrino mixing angles, θ14PMNS\theta_{14}^{PMNS}, θ24PMNS\theta_{24}^{PMNS} and θ34PMNS\theta_{34}^{PMNS} are assumed to be freely varying between (0π/4)(0-\pi/4) and obtained results which are consistent with the data available from various experiments, like Noν\nuA, MINOS, SuperK, Ice Cube-DeepCore. In further investigation, we analytically obtain approximately similar ranges for various neutrino mixing parameters Uμ42\mid{ U_{\mu 4}}\mid ^2 and Uτ42\mid{ U_{\tau 4}}\mid ^2.Comment: 16 pages, 4 tables, 7 figures(with subfigures, total 14 figures

    Method for sequentially processing a multi-level interconnect circuit in a vacuum chamber

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    An apparatus is disclosed which includes a vacuum system having a vacuum chamber in which wafers are processed on rotating turntables. The vacuum chamber is provided with an RF sputtering system and a dc magnetron sputtering system. A gas inlet introduces various gases to the vacuum chamber and creates various gas plasma during the sputtering steps. The rotating turntables insure that the respective wafers are present under the sputtering guns for an average amount of time such that consistency in sputtering and deposition is achieved. By continuous and sequential processing of the wafers in a common vacuum chamber without removal, the adverse affects of exposure to atmospheric conditions are eliminated providing higher quality circuit contacts and functional device

    Maladaptive cognitive appraisals in children with high-functioning autism : associations with fear, anxiety and theory of mind

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    Despite the well-documented success of cognitive restructuring techniques in the treatment of anxiety disorders, there is still little clarity on which cognitions underpin fear and anxiety in children with high-functioning spectrum disorders (HFASD). This study examined whether certain cognitive appraisals, known to be associated with fear and anxiety in non-HFASD groups, may help explain these emotions in children with HFASD. It also investigated relations between these cognitive appraisals and theory-of-mind (TOM). Using a vignette approach, appraisals, fear and anxiety were assessed in 22 children with HFASD and 22 typically developing (TD) children. The two groups differed significantly on all four appraisal types. Anxiety was negatively correlated with future expectancy and positively with problem-focused coping potential in the HFASD group, but was not correlated with appraisals in the TD group. Emotion-focused coping potential was the only appraisal correlated with fear in the HFASD group and only self-accountability in the TD group. Linear regression analysis found appraisals of emotion-focused coping potential, problem-focused coping potential and future expectancy to be significant predictors of TOM ability in the HFASD group. These findings indicate that specific, problematic patterns of appraisal may characterise children with HFASD

    Method for sequentially processing a multi-level interconnect circuit in a vacuum chamber

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    The processing of wafer devices to form multilevel interconnects for microelectronic circuits is described. The method is directed to performing the sequential steps of etching the via, removing the photo resist pattern, back sputtering the entire wafer surface and depositing the next layer of interconnect material under common vacuum conditions without exposure to atmospheric conditions. Apparatus for performing the method includes a vacuum system having a vacuum chamber in which wafers are processed on rotating turntables. The vacuum chamber is provided with an RF sputtering system and a DC magnetron sputtering system. A gas inlet is provided in the chamber for the introduction of various gases to the vacuum chamber and the creation of various gas plasma during the sputtering steps
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