7,912 research outputs found
Sterile neutrinos and right-handed currents in KATRIN
Kurie-plot experiments allow for neutrino-mass measurements based on
kinematics in an almost model-independent manner. A future tritium-based
KATRIN-like experiment can be sensitive to light sterile neutrinos with masses
below 18 keV, which are among the prime candidates for warm dark matter. Here
we consider such keV neutrinos in left--right symmetric extensions, i.e.
coupled to right-handed currents, which allow for an enhanced contribution to
beta decay even for small active--sterile mixing, without violating
astrophysical X-ray constraints. The modified spectral shape is in principle
distinguishable from the standard contribution---especially for sterile
neutrino masses below 9 keV, which can lead to a distinct peak. We compare the
sensitivity to constraints from the LHC and neutrinoless double beta decay.Comment: 21 pages, 10 figures; minor changes, added references. Matches
published versio
How Fast Can You Escape a Compact Polytope?
The Continuous Polytope Escape Problem (CPEP) asks whether every trajectory of a linear differential equation initialised within a convex polytope eventually escapes the polytope. We provide a polynomial-time algorithm to decide CPEP for compact polytopes. We also establish a quantitative uniform upper bound on the time required for every trajectory to escape the given polytope. In addition, we establish iteration bounds for termination of discrete linear loops via reduction to the continuous case
CONSUMER DEMAND ANALYSIS ACCORDING TO GARP
The nonparametric approach to consumer-demand analysis-based on revealed-preference axioms-is reviewed. Particular attention is paid to questions of size and power of tests for consistency of data with the existence of a stable, well-behaved utility function that could have generated the data. An application to Australian meat demand is used to show how these notions can be quantified and how prior information about elasticities, following Sakong and Hayes, may be used to increase the power of the approach.
Creating Competitive Advantage in the Global Marketplace: The Singapore Experiment in East Asia
Taxes and quality: A market-level analysis
Aconventional assumption of product homogeneity when the commodity of interest is actually heterogeneous will lead to errors in an analysis of the incidence of policies, such as taxes. In this article, an equilibrium displacement model is used to derive analytical solutions for price, quantity, and quality effects of ad valorem and per unit taxes. The results show how parameters determine the effects of tax policies on quality. The potential for tax-induced distortions in quality, and the distributive consequences of those distortions, are illustrated in a case study of the market for Australian wine.Resource /Energy Economics and Policy,
The effect of immigrants on natives' incomes through the use of capital / BEBR No.878
Includes bibliographical references (p. 19)
CAN WE TAKE THE CON OUT OF MEAT DEMAND STUDIES?
Whimsy in specification choices leads to fragility of inference in econometric studies of structural change in meat demand. The literature contains a variety of results, with many contradictions, attributable largely to differences in specifications. This article reviews that literature, uses synthetic data to demonstrate the sensitivity of results to specification choices and to evaluate the power of nonparametric tests, and uses Canadian data to demonstrate a preferred approach to testing the hypothesis of structural change.Demand and Price Analysis,
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