Measurement of the D+ and Ds+ decays into K+K-K+

We present the first clear observation of the doubly Cabibbo suppressed decay D+ --> K-K+K+ and the first observation of the singly Cabibbo suppressed decay Ds+ --> K-K+K+. These signals have been obtained by analyzing the high statistics sample of photoproduced charm particles of the FOCUS(E831) experiment at Fermilab. We measure the following relative branching ratios: Gamma(D+ --> K-K+K+)/Gamma(D+ --> K-pi+pi+) = (9.49 +/- 2.17(statistical) +/- 0.22(systematic))x10^-4 and Gamma(Ds+ --> K-K+K+)/Gamma(Ds+ --> K-K+pi+) = (8.95 +/- 2.12(statistical) +2.24(syst.) -2.31(syst.))x10^-3

Measurement of the Ωc0\Omega_c^0 Lifetime

The FOCUS experiment(FNAL-E831) has used two channels, $\Omega^- \pi^+$ and $\Xi^-K^- \pi^+ \pi^+$,to measure the lifetime of the $\Omega_c^0$ charmed baryon. From a sample of $64 \pm 14$ signal events at a mass of 2.698 GeV/$c^2$, we measure an $\Omega_c^0$ lifetime of $72 \pm 11$ (stat.) $\pm 11$ (sys.) fs, substantially improving upon the current world average.Comment: 12 pages and 5 figure

Fiscal policy and Dutch disease

Specific factors, Real exchange rate, Capital stock dynamics, Factor intensity, International trade, Dutch disease, Permanent income, Fiscal policy rules, Overlapping generations, JEL, E01, F43, O41, Q3,

The Dutch Disease and Economic Diversification: Should the Approach by Developing Countries Be Different?

It might be intuitively expected that resource-abundant countries possess economic advantages (other conditions being similar) over resource-poor countries that enables them to achieve faster economic growth. This expectation has, however, been widely questioned in the literature, with empirical evidence suggesting that resource-abundant countries achieve slower economic growth compared to less resource-abundant countries over the long term. For example, between 1960 and 1990, the per capita incomes of resource-poor countries grew 2-3 times faster than the per capita income of resource-abundant countries, and the gap in growth rates appears to have widened over time (see Sachs and Warner, 1999; Auty, 2001a). This counter-intuitive outcome has become the subject of intense empirical, theoretical and policy research and underpins the so-called resource curse puzzle