Results 51 to 60 of about 1,098,728 (163)
Journal of Politics in Latin America, 2010 During the 1990s, a large number of regulatory agencies were created or reformed in different sectors in Latin American countries. Almost all included political delegation mechanisms, intended as formal rules to enhance credible commitments to time ...
Jacint Jordana, Carles Ramió
doaj
On nature of scalar a0(980) and f0(980)-mesons [PDF]
Nuclear Physics A, 2000 It is presented a critical consideration of all unusual properties of the scalar a_0(980) and f_0(980)-mesons in the four-quark, two-quark and molecular models. The arguments are adduced that the four-quark model is more preferable. It is discussed the complex of experiments that could finally resolve this issue.
openaire +2 more sources
Photonics, 2022 In this paper, the scalability of slope efficiency of a Yb-doped fiber amplifier operating near 980 nm is studied with the core-pumping scheme. By means of numerical prediction, it is found that the theoretical limit of slope efficiency should be about ...
Zhaode Li +5 more
doaj +1 more source
Journal of Politics in Latin America, 2010 Most analyses of the judicialization of politics focus on judicial policy-making and rights creation; however when judicialization of politics unfolds in a separation of powers political context courts are also involved in distributing power. The task of
Druscilla L. Scribner
doaj
Study of a0(980)--f0(980) mixing
, 2010 19 pages, 4 figures, published in Phys.
openaire +2 more sources
Journal of Politics in Latin America, 2010 This paper contributes to the debate about the ideological coherence of the Brazilian party system. Using discriminant function analysis of 20 years of surveys of Brazilian legislators, we find that the party system now exhibits relatively little ...
Kevin Lucas, David Samuels
doaj
The s-sbar and K-Kbar nature of f_0(980) in D_s decays
, 2000 We examine the D_s -> f_0(980) pi amplitude through a constituent quark-meson model, incorporating heavy quark and chiral symmetries, finding a good agreement with the recent E791 data analysis of D_s -> 3pi via f_0(980).
Deandrea, A. +4 more
core +1 more source
Sigma, Kappa, fo(980) and a0(980)
, 2005 Both sigma and kappa are well established from E791 data on D->3pi and Ds->Kpipi and BES II data on J/Psi -> omega pi pi and KKpipi. These fits are accurately consistent with pipi and Kpi elastic scattering when one allows for the Adler zero which arises from Chiral Symmetry Breaking. The phase variation with mass is consistent between elastic
openaire +2 more sources
Journal of Politics in Latin America, 2010 Ideology, typically defined on a left-right spectrum, should provide a means of communication between elites and masses. After years of leftist party rule, have Brazilian voters internalized ideological divisions? Longitudinal surveys conducted from 2002
Barry Ames, Amy Erica Smith
doaj
Light scalars in semi-leptonic decays of heavy quarkonia
, 2012 We study the mechanism of production of the light scalar mesons in the $D_s^+\to\pi^+\pi^- e^+\nu$ decays: $D_s^+\to s\bar s e^+\nu\to [\sigma(600)+f_0(980)] e^+\nu\to\pi^+\pi^- e^+\nu$, and compare it with the mechanism of production of the light ...
A. V. Kiselev +2 more
core +1 more source