Consistency of the proposed additive measures of revealed comparative advantage

The recently proposed additive measures of revealed comparative advantage (RCA) have been argued as better alternatives to the Balassa Index. This note builds on those suggestions and provides a framework to assess their applicability by means of their consistency across the dimensions and inferences that the indices' informational content allow. A formal empirical investigation supports the presented arguments that the proposed additive constructs of RCA possess certain inconsistencies that may obscure comparative analyses based on them, whereas alternative additive measures proposed here are shown to be more consistent over space and time, and hence may serve as better instruments in related quantitative research.Revealed comparative advantage

Exclusive Baryonic B Decays Circa 2005

The status of exclusive two-body and three-body baryonic B decays is reviewed. The threshold enhancement effect in the dibaryon invariant mass and the angular distributions in the dibaryon rest frame are stressed and explained. Weak radiative baryonic B decays mediated by the electromagnetic penguin process $b\to s\gamma$ are discussed. Puzzles with the correlation observed in $B^-\to p\bar pK^-$ decay and the unexpectedly large rate observed for $B\to\Lambda_c\bar\Lambda_cK$ are examined. The former may indicate that the $p\bar p$ system is produced through some intermediate states, while the latter implies the failure of naive factorization for $\Lambda\bar\Lambda K$ modes and may hint at the importance of final-state rescattering effects.Comment: 21 pages, 9 figures, talk presented at 3rd International Conference on Flavor Physics, Oct 3-8, 2005, National Central Univ. Chung-li, Taiwa

Radiative πρ\pi \rho and πω\pi \omega transition form factors in a light-front constituent quark model

The form factors of the $\pi \rho$ and $\pi \omega$ radiative transitions are evaluated within a light-front constituent quark model, using for the first time the eigenfunctions of a light-front mass operator reproducing the meson mass spectrum and including phenomenological Dirac and Pauli quark form factors in the one-body electromagnetic current operator. The sensitivity of the transition form factors both to the meson wave functions and to the constituent quark form factors is illustrated. It is shown that the measurement of the $\pi \rho$ and $\pi \omega$ radiative transitions could help in discriminating among various models of the meson structure.Comment: 9 pages, latex, 4 figures available as separate .uu file, to appear in Phys. Lett.

Vector Meson Dominance as the first order of a sequence of Pade Approximants

The use of Pade Approximants for the analysis of the pion vector form-factor is discussed and justified in this talk. The method is tested first in a theoretical model and applied then on real experimental data. It is shown how the Pade Approximants provide a convenient and reliable framework to incorporate both low and high energy information in the euclidean region, leading to improved determinations of the low energy parameters such as, e.g., the quadratic radius ^pi_V.Comment: 4 pages, 3 figures, espcrc2 style. To appear in the proceedings of the 14th International QCD Conference, QCD 08, 7-12 July 2008, Montpellier (France

Preliminary Results on gamma gamma -> Ks K pi from CLEO

We analyzed 13.8 fb^{-1} of the integrated e+e- luminosity collected at 10.6 GeV center-of-mass energy with the CLEO II and II.V detectors to study exclusive two-photon production of single hadronic resonances. We searched for hadrons decaying into Ks K pi when both leptons remain undetected. In this analysis we studied the detection efficiency and evaluated systematic errors using independent data samples. We estimated 90% CL upper limits on the products of the two-photon partial widths of (pseudo)scalar hadrons with masses below 1.7 GeV/c2 and their branching fractions into Ks K pi. Our preliminary results are marginally consistent with the first observation of eta(1440) in two-photon collisions by the L3 experiment.Comment: 4 pages, 1 figure, proceedings contribution for PANIC'0

Nucleon and pion electromagnetic form factors in a light-front constituent quark model

Nucleon and pion electromagnetic form factors are evaluated in the spacelike region within a light-front constituent quark model, where eigenfunctions of a mass operator, reproducing a large set of hadron energy levels, are adopted and quark form factors are considered in the one-body current. The hadron form factors are sharply affected by the high momentum tail generated in the wave function by the one-gluon-exchange interaction. Useful information on the electromagnetic structure of light constituent quarks can be obtained from the comparison with nucleon and pion experimental data.Comment: 9 pages, latex, 4 figures available as separate .uu fil

The interplay of soft and hard contributions in the electromagnetic pion form factor

We consider various relativistic models for the valence Fock-state wave function of the pion. These models are obtained from simple instant-form wave functions by applying a Melosh rotation to the spin part and by imposing physical constraints on the parameters. We discuss how the soft and the hard (perturbative) parts of the electromagnetic form factor are affected by the choice of the model and by the Melosh rotation.Comment: 3 pages, 2 eps-figures, uses espcrc2.st

Kreuze in den neuzeitlichen Gräbern der Pfarrkirche der hl. Maria Magdalena in Čazma

Arheološkim istraživanjima crkve Sv. Marije Magdalene u Čazmi dobiveno je obilje podataka o novovjekovnim običajima pokapanja pokojnika. Svetačke medaljice, krunice i križevi najzanimljiviji su predmeti pronađeni u grobovima. U ovom radu je naglasak stavljen na interpretaciju križeva te potrebu za što češćim objavljivanjem novovjekovnih nalaza.Im Laufe der archäologischen Ausgrabungen der Kirche der hl. Maria Magdalena in Čazma konnte eine Reihe von Hinweisen über neuzeitliche Bestattungsbräuche gewonnen werden. Heiligenmedaillons, Rosenkränze und Kreuze sind die interessantesten in den Gräbern vorgefundenen Gegenstände. Im Mittelpunkt dieses Artikels stehen die Interpretation der Kreuze sowie das Erfordernis einer möglichst häufi gen Veröff entlichung der neuzeitlichen Funde

Stability, Specialisation and Divergence in Export Patterns for EU15

This paper examines the extent of stability, specialisation and divergence in manufacturing industries' export patterns for EU15 countries at both industry and country level, distinguishing between intra and extra EU15 exports as well as different technological categories. Both countrywide and industrywide analyses suggest that specialisation patterns, on average, are rather sticky. Furthermore, as proposed, intra-EU15 specialisation patterns are less persistent, particularly in higher technology industries. From an industry specific point, such non-persistence within intra-EU15 patterns is reflected as convergence of countries, whereas persistent extra-EU15 patterns are reflected as divergence of countries, which again are more common in higher technology industries