5,056 research outputs found

    The distribution of baroclinity within the atmosphere

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    A three dimensional numerical interpolation scheme which resolves frontal gradients with fidelity was developed. The scheme is applied to the study of atmospheric upper baroclinic zones

    Total Width of 125 GeV Higgs Boson

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    By using the LHC and Tevatron measurements of the cross sections to various decay channels relative to the standard model Higgs boson, the total width of the putative 125 GeV Higgs boson is determined as 6.1 +7.7-2.9 MeV. We describe a way to estimate the branching fraction for Higgs decay to dark matter. We also discuss a No-Go theorem for the gammagamma signal of the Higgs boson at the LHC.Comment: 11 pages, 2 figure

    Numerical simulation of viscous supersonic flow over a generic fighter configuration

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    A procedure is presented, as well as some results, to calculate the flow over a generic fighter configuration. A parabolized marching Navier-Stokes code is used to obtain the solution over a wing-canopy body. The flow conditions simulate supersonic cruise with a freestream Mach number of 2.169 and angles of attack of 4 and 10 deg. The body surface is considered to be an adiabatic wall and the flow is assumed to be turbulent for the given Reynolds number

    Searching for Stoponium along with the Higgs boson

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    Stoponium, a bound state of top squark and its antiparticle in a supersymmetric model, may be found in the ongoing Higgs searches at the LHC. Its WW and ZZ detection ratios relative to the Standard Model Higgs boson can be more than unity from WW* threshold to the two Higgs threshold. The gamma gamma channel is equally promising. Some regions of the stoponium mass below 150 GeV are already being probed by the ATLAS and CMS experiments.Comment: 10 pages 5 figure

    Foreign Output Shocks and Monetary Policy Regimes in Small Open Economies: A DSGE Evaluation of East Asia

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    East Asia’s small open economies were hit in varying degrees by the sharp drop in the output of major industrial countries during the global financial and economic crisis of 2008-2009. This highlights the role of monetary policy regimes in cushioning small open economies from adverse external output shocks. To assess the welfare impact of external shocks on key macroeconomic variables under different monetary policy regimes, we numerically solve and calculate the welfare loss function of a dynamic stochastic general equilibrium (DSGE) model. We find that CPI inflation targeting minimizes welfare losses for import-to-GDP ratios from 0.3 to 0.9. However, welfare under the pegged exchange rate regime is almost equivalent to CPI inflation targeting when the import-to-GDP ratio is one while the Taylor-type rule minimizes welfare when the import-to-GDP ratio is 0.1. We calibrate the model and derive welfare implications for eight East Asian small open economies.Trade channel, Import-to-GDP ratio, small open economies, welfare, exchange rate regimes, inflation targeting, Taylor rule, foreign output shock

    Foreign Output Shocks and Monetary Policy Regimes in Small Open Economies: A DSGE Evaluation of East Asia

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    East Asia’s small open economies were hit in varying degrees by the sharp drop in the output of major industrial countries during the global financial and economic crisis of 2008-2009. This highlights the role of monetary policy regimes in cushioning small open economies from adverse external output shocks. To assess the welfare impact of external shocks on key macroeconomic variables under different monetary policy regimes, we numerically solve and calculate the welfare loss function of a dynamic stochastic general equilibrium (DSGE) model. We find that CPI inflation targeting minimizes welfare losses for import-to-GDP ratios from 0.3 to 0.9. However, welfare under the pegged exchange rate regime is almost equivalent to CPI inflation targeting when the import-to-GDP ratio is one while the Taylor-type rule minimizes welfare when the import-to-GDP ratio is 0.1. We calibrate the model and derive welfare implications for eight East Asian small open economies.

    Theory and applications of supercycled symmetry-based recoupling sequences in solid-state NMR

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    We present the theoretical principles of supercycled symmetry-based recoupling sequences in solid-state magic-angle-spinning NMR. We discuss the construction procedure of the SR26 pulse sequence, which is a particularly robust sequence for double-quantum homonuclear dipole-dipole recoupling. The supercycle removes destructive higher-order average Hamiltonian terms and renders the sequence robust over long time intervals. We demonstrate applications of the SR26 sequence to double-quantum spectroscopy, homonuclear spin counting, and determination of the relative orientations of chemical shift anisotropy tensors
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