Results 71 to 80 of about 1,092,395 (259)

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., Gatto, R., Nardulli, G., Polosa, A. D., Tornqvist, N. A.   +4 more
core   +1 more source

Trap‐Modified Inverted Organic Photodetectors via Layer‐by‐Layer Processing with Poly(N‐vinylcarbazole) Additives

Advanced Functional Materials, EarlyView.
Trap state engineering in inverted organic photodetectors (OPDs) is achieved via combined layer‐by‐layer (LbL) processing and poly(N‐vinylcarbazole) (PVK) incorporation. LbL reduces the trap density while PVK additives gradually shift trap states from shallow band‐edge to deep mid‐gap levels, tailoring the energy distribution.
Jingwei Yi, Yi Yang, Yusen Pei, Apurva Gadikar, Vahid Mahdikhah, Myratgeldi Kotyrov, Seung Hyun Kim, Kenan Gundogdu, Wei You, Harald Ade, Franky So   +10 more
wiley   +1 more source

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

Rational Design of Printable Carbon Nanotube Transparent Conductive Films via Data‐Driven and Mechanistic Insights

Advanced Functional Materials, EarlyView.
A machine learning and simulation‐guided strategy is demonstrated for gentle, non‐sonication dispersion of carbon nanotubes, preserving structural integrity and performance. This approach enables transparent conductive films with low sheet resistance, high transmittance, and sub‐20 µm printability.
Ying Zhou, Ken‐ichi Nomura, Shun Muroga, Makoto Yoneya, Don N. Futaba, Takeo Yamada, Reiko Azumi, Kenji Hata   +7 more
wiley   +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  

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, N. N. Achasov, N. N. Achasov   +2 more
core   +1 more source

Theory‐Guided Design of Non‐Precious Single‐Atom Catalyst for Electrocatalytic Chlorine Evolution

Advanced Functional Materials, EarlyView.
To overcome the reliance on noble metals for the chlorine evolution reaction (CER), we designed a non‐precious single‐atom catalyst (SAC), NiN3O–O. It achieves a low overpotential of 75 mV, 95.8% Cl2 selectivity, and outperforms commercial dimensionally stable anodes (DSAs).
Kai Ma, Longfei Yang, Xiaojin Yang, Chang Zhang, Di Zhang, Linda Zhang, Li Wei, Chenliang Ye, Hao Li, Weijie Yang   +9 more
wiley   +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