Results 51 to 60 of about 1,092,395 (259)

Calculation of the $$B\rightarrow K_{0,2}^*(1430)f_0(980)/\sigma $$ B→K0,2∗(1430)f0(980)/σ decays in the perturbative QCD approach

open access: yesEuropean Physical Journal C: Particles and Fields, 2019
Motivated by the observations of the decays $$B^0 \rightarrow K_0^{*}(1430)^0 f_0(980)$$ B0→K0∗(1430)0f0(980) and $$ B^0 \rightarrow K_2^{*}(1430)^0 f_0(980)$$ B0→K2∗(1430)0f0(980) from BaBar collaboration, we study the $$B^{0(+)} \rightarrow K_{0,2}^{*}(
Qi-Xin Li   +4 more
doaj   +1 more source

Study of scalar meson f_0(980) and K_0^*(1430) from B \to f_0(980)\rho(\omega, \phi) and B \to K^*_0(1430)\rho(\omega) Decays

open access: yes, 2010
In the two-quark model supposition for $f_0(980)$ and $K_0^{*}(1430)$, the branching ratios and the direct CP-violating asymmetries for decays $\bar{B}^0\to f_0(980)\rho^0(\omega,\phi), K^{*0}_0(1430)\rho^0(\omega), K^{*-}_0(1430)\rho^+$ and $B^-\to f_0 ...
Zhang, Zhi-Qing
core   +1 more source

Low‐Symmetry Weyl Semimetals: A Path to Ideal Topological States

open access: yesAdvanced Functional Materials, EarlyView.
This study presents a theoretical framework for realizing ideal Weyl semimetals, where Weyl nodes are well‐isolated at the Fermi level. The approach is exemplified in the low‐symmetry material Cu2SnSe3, which exhibits tunable topological phases, current‐induced orbital magnetization, and a strong circular photogalvanic effect, making it a promising ...
Darius‐Alexandru Deaconu   +3 more
wiley   +1 more source

Dissatisfaction with Democracy: Evidence from the Latinobarómetro 2005 Insatisfacción con la Democracia: Evidencia de Latinobarómetro 2005

open access: yesJournal of Politics in Latin America, 2010
Data for 17 Latin American countries collected by Latinobarómetro 2005 reveal that dissatisfaction with democracy is a sign of progress. Political stability and increased governmental effectiveness enable the better-educated leftish young to express ...
Brian J. L. Berry   +1 more
doaj  

Why the f(0)(980) is mostly ssbar [PDF]

open access: yes, 2000
We exploit the W-emission process to study the measured weak decay of the D(s,+)(1.9686) meson into f(0)(980) and a positively charged pion. We conclude that the scalar f(0)(980) meson contains mostly strange-antistrange flavors, which is supported by ...
Rupp, George   +2 more
core   +2 more sources

Near‐Infrared Emitting Lanthanide Catecholate Giant Single Crystals – Morphology Control and Photon Down‐Conversion

open access: yesAdvanced Functional Materials, EarlyView.
Controlled syntheses of lanthanide coordination polymers based on the dihydroxybenzoquinone (DHBQ) organic linker afforded large single crystals of Ln‐DHBQ CPs (Ln = Yb, Nd). A novel structural variant of Yb‐DHBQ is identified by means of single crystal diffraction analysis.
Marina I. Schönherr   +7 more
wiley   +1 more source

Delegation, Presidential Regimes, and Latin American Regulatory Agencies Delegación, regimenes presidenciales y agencias reguladoras en América Latina

open access: yesJournal 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  

Measurement of $B^0\to\pi^+\pi^-\pi^+\pi^-$ Decays and Search for $B^0\to\rho^0\rho^0$

open access: yes, 2008
We report on a search for the decay $B^0\to\rho^0\rho^0$ and other charmless modes with a $\pi^+\pi^-\pi^+\pi^-$ final state, including $B^0\to\rho^0\pi^+\pi^-$, non-resonant $B^0\to 4\pi^{\pm}$, $B^0\to\rho^0f_0(980)$, $B^0\to f_0(980)f_0(980)$ and $B^0\
A. Bozek   +149 more
core   +1 more source

On nature of scalar a0(980) and f0(980)-mesons [PDF]

open access: yesNuclear 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

Double Helical Plasmonic Antennas

open access: yesAdvanced Functional Materials, EarlyView.
Plasmonic double helical antennas funnel circularly polarized light to the nanoscale, offering strong chiroptical interaction and directional light emission. Extending a single helix design tool, this study combines numerical modeling with experimental validation, revealing large, broadband dissymmetry factors in the visible range.
Aleksei Tsarapkin   +7 more
wiley   +1 more source

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