Results 61 to 70 of about 1,098,728 (163)

Presidential Control of High Courts in Latin America: A Long-term View (1904-2006) Control presidencial de las cortes supremas en América Latina. Una mirada histórica (1904-2006)

Journal of Politics in Latin America, 2009
In many Latin American countries the executive branch manipulatesthe composition of the Supreme Court, and judicial independence hasremained elusive. Because high courts can exercise judicial review and influencelower courts, incoming presidents often ...
Aníbal Pérez-Liñán, Andrea Castagnola   +1 more
doaj  

Study of quasi-two-body $$B_{(s)}\rightarrow \phi (f_0(980)/f_2(1270)\rightarrow )\pi \pi $$ B ( s ) → ϕ ( f 0 ( 980 ) / f 2 ( 1270 ) → ) π π decays in perturbative QCD approach

European Physical Journal C: Particles and Fields, 2021
In 2017, LHCb collaboration reported their first observation of the rare decays $$B_s \rightarrow \phi (f_0(980)$$ B s → ϕ ( f 0 ( 980 ) $$/f_2(1270) \rightarrow ) \pi ^+\pi ^-$$ / f 2 ( 1270 ) → ) π + π - and the evidence of $$B^0 \rightarrow \phi (f_0 ...
Zhi-Tian Zou, Lei Yang, Ying Li, Xin Liu
doaj   +1 more source

The Mechanics of Regime Instability in Latin America Mecanismos de inestabilidad de régimen en América Latina

Journal of Politics in Latin America, 2009
The paper is narrowly addressed to a single puzzle: How did it happen that countries that attempted to install democracy earlier enjoyed it less frequently?
Adam Przeworski
doaj  

QCD sum rule study on the $f_0(980)$ structure as a pure $K \bar{K}$ bound state

, 2013
We perform a QCD sum rule analysis for the scalar $f_0(980)$ meson to investigate whether it can be described as a pure bound state of $K$ and $\bar{K}$ mesons.
Kochelev, N. I., Lee, Hee-Jung, Oh, Yongseok   +2 more
core   +1 more source

Failed Presidencies: Identifying and Explaining a South American Anomaly Presidencias fallidas: identificando y explicando una anomalía sudamericana

Journal of Politics in Latin America, 2009
Are presidential democracies inherently unstable and prone to breakdown? Recent work on Latin America suggests that the region has seen the emergence of a new kind of instability, where individual presidents do not manage to stay in office to the end of ...
Kathryn Hochstetler, Margaret E. Edwards
doaj  

UNDERSTANDING THE SCALAR MESON $q\bar q$ NONET

, 1995
It is shown that one can fit the available data on the a0(980), f0(980), f0(1300) and K*0(1430) mesons as a distorted 0++ qq bar nonet using very few (5-6) parameters and an improved version of the unitarized quark model.
A. Manohar, A. Yaouanc Le, B. Baghi, B. Hyams, B.R. Martin, C. Amsler, C. Amsler, D. Aston, D.V. Bugg, E. Aker, F. Gilman, G. Grayer, J. Weinstein, J.D. Björken, J.F. Donoghue, K.L. Au, L. Castillejo, L. Montanet, L. Rosselet, N.A. Törnqvist, N.A. Törnqvist, N.A. Törnqvist, N.A. Törnqvist, N.A. Törnqvist, N.A. Törnqvist, N.M. Cason, N.N. Achasov, Nils A. Törnqvist, P. Estabrooks, P. Geiger, R. Kaminski, R.P. Feynman, S. Abatzis, S.L. Adler, T. Hatsuda, T.A. Armstrong, U-G. Meissner, V. Bernard, V. Weisskopf, Y. Dothan, Y. Nambu   +40 more
core   +1 more source

Institutional Change in Latin America: External Models and their Unintended Consequences Cambio institucional en América Latina. Modelos externos y sus consequencias involuntarias

Journal of Politics in Latin America, 2009
Influential theories claim that institutions shape actor behavior but are sustained by these actors’ behavior. How do scholars escape from this trap of endogeneity? This article highlights a partially exogenous factor: institutional models and blueprints.
Kurt Weyland
doaj  

Extended chiral Khuri–Treiman formalism for $$\eta \rightarrow 3\pi $$ η → 3 π and the role of the $$a_0(980)$$ a 0 ( 980 ) , $$f_0(980)$$ f 0 ( 980 ) resonances

European Physical Journal C: Particles and Fields, 2017
Recent experiments on $$\eta \rightarrow 3\pi $$ η → 3 π decays have provided an extremely precise knowledge of the amplitudes across the Dalitz region which represent stringent constraints on theoretical descriptions.
M. Albaladejo, B. Moussallam
doaj   +1 more source

The puzzle of anomalously large isospin violations in $\eta(1405/1475)\to 3\pi$

, 2012
The BES-III Collaboration recently report the observation of anomalously large isospin violations in $J/\psi\to \gamma\eta(1405/1475) \to \gamma \pi^0 f_0(980)\to \gamma +3\pi$, where the $f_0(980)$ in the $\pi\pi$ invariant mass spectrum appears to be ...
Liu, Xiao-Hai, Wu, Jia-Jun, Zhao, Qiang, Zou, Bing-Song   +3 more
core   +1 more source

Influence of microstructure on fatigue property of ultra high-strength steels

Fracture and Structural Integrity, 2019
Ultra-high-strength steels (with tensile strength higher than 980 MPa) are widely used in automobile manufacturing owing to their lightweight that contributes to fuel efficiency.
Kanji OKUDA, Kazuhiro OGAWA, Yuji ICHIKAWA, Tsuyoshi SHIOZAKI, Naoki YAMAGUCHI   +4 more
doaj   +3 more sources