- Quantum Chromodynamics and Particle Interactions
- Particle physics theoretical and experimental studies
- High-Energy Particle Collisions Research
- Bioinformatics and Genomic Networks
- Microbial Metabolic Engineering and Bioproduction
- Black Holes and Theoretical Physics
- Neural and Behavioral Psychology Studies
- Complex Network Analysis Techniques
- Gene Regulatory Network Analysis
- Quantum chaos and dynamical systems
- Opinion Dynamics and Social Influence
- Statistical Methods and Applications
- Nuclear physics research studies
- Benford’s Law and Fraud Detection
- Face Recognition and Perception
- Biofuel production and bioconversion
- EEG and Brain-Computer Interfaces
- Cold Atom Physics and Bose-Einstein Condensates
- Genomics and Phylogenetic Studies
- Names, Identity, and Discrimination Research
- Sensory Analysis and Statistical Methods
- Scientific Computing and Data Management
- Face recognition and analysis
- Nuclear reactor physics and engineering
- Media Influence and Politics
Universidade Federal do Rio Grande do Sul
2014-2023
Valencia Catholic University Saint Vincent Martyr
2011-2014
Universitat Politècnica de València
2011-2014
Universitat de València
2007-2012
Universitat de Barcelona
2010-2012
University of Groningen
2010-2012
Goethe University Frankfurt
2012
Universidad Complutense de Madrid
2012
Virginia Tech
2012
Departamento de Ciência e Tecnologia
2012
We perform an analytical study of the scattering matrix and bound states in problems with many physical coupled channels. establish relationship couplings to different channels, obtained from residues at poles, wave functions for The basically reflect value around origin coordinate space. In concrete case X(3872) resonance, understood as a state $\ddn$ $\ddc$ (and $c.c.$), loosely bound, we find that two channels are essentially equal leading good isospin I=0 character. This is spite having...
We will study open and hidden charm scalar meson resonances within two different models. The first one is a direct application of chiral Lagrangian already used to flavor symmetry breaking in Skyrme In another approach the problem $SU(4)$ symmetric built broken down $SU(3)$ by identifying currents where heavy mesons are exchanged suppressing those. Unitarization coupled channels leads dynamical generation both models, particular, new resonance with mass 3.7 GeV predicted. small differences...
In this paper we study the effects of isospin breaking in dynamical generation $X(3872)$ state. We also calculate ratio branching fractions $X$ decaying into $J/\ensuremath{\psi}$ with two and three pions, which has been measured experimentally to be close unity. Together $X(3872)$, positive $C$ parity, predict existence a negative $C$-parity state, comment on decay channel is more promising observe The simultaneous investigation $J/\ensuremath{\psi}\ensuremath{\pi}\ensuremath{\pi}$...
We use a consistent SU(6) extension of the meson-baryon chiral Lagrangian within coupled channel unitary approach in order to calculate $T$ matrix for scattering $s$ wave. The building blocks scheme are $\ensuremath{\pi}$ and $N$ octets, $\ensuremath{\rho}$ nonet $\ensuremath{\Delta}$ decuplet. identify poles this interpret them as resonances. study here nonexotic sectors with strangeness $S=0$, $\ensuremath{-}1$, $\ensuremath{-}2$, $\ensuremath{-}3$ spin $J=\frac{1}{2}$, $\frac{3}{2}$...
A study of the $J/\ensuremath{\psi}\ensuremath{\pi}\ensuremath{\pi}$ and $J/\ensuremath{\psi}K\overline{K}$ systems, treating them as coupled channels, has been made by solving Faddeev equations, with purpose investigating possibility generation ${J}^{\mathrm{PC}}={1}^{--}$, $Y(4260)$ resonance due to interaction between these three mesons. In order do this, we start Bethe-Salpeter equation for two pseudoscalar vector-pseudocalar meson systems using amplitudes obtained from lowest chiral...
Following a model based on the SU(8) symmetry that treats heavy pseudoscalars and vector mesons an equal footing, as required by quark symmetry, we study interaction of baryons in coupled channels within unitary approach generates dynamically poles scattering $T$-matrix. We concentrate exotic with negative charm quantum number for which there is experimental claim one state.
The reconstruction of genome-scale metabolic models and their applications represent a great advantage systems biology. Through use as flux simulation models, production industrially-interesting metabolites can be predicted. Due to the growing number studies driven by increasing genomic sequencing projects, it is important conceptualize steps analysis. We have focused our work in cyanobacterium Synechococcus elongatus PCC7942, for which several analyses insights are unveiled. A comprehensive...
This work compared two common variants of a lexical decision task (LDT) through different analysis procedures: first, the classical ANOVA method, and second, by fitting data to an ex-Gaussian distribution function. Two groups participants (old young university students) had perform, blocks go/no-go yes/no tasks. Reaction times error rates were much lower in than task. Changes parameter related attention found with word frequency but not type LDT These findings suggest that shows attentional...
The current work examines the effect of trial-by-trial feedback about correct and error responding on performance in two basic cognitive tasks: a classic Stroop task (n = 40) color-word matching 30). Standard measures both RT accuracy were examined addition to obtained from fitting ex-Gaussian distributional model RTs. For tasks, RTs faster blocks trials with than without feedback, but this difference was not significant. On other hand, respect analyses, providing served significantly reduce...
We present the formalism for decay of dynamically generated scalar mesons with open- or hidden charm and give results ${D}_{s0}^{*}(2317)$ to $\ensuremath{\gamma}{D}_{s}^{*}$ plus that a meson state predicted by theory around 3700 MeV decaying into $\ensuremath{\gamma}J/\ensuremath{\psi}$.
Nowadays, the reconstruction of genome-scale metabolic models is a nonautomatized and interactive process based on decision making. This lengthy usually requires full year one person's work in order to satisfactory collect, analyze, validate list all reactions present specific organism. In write this list, manually has go through huge amount genomic, metabolomic, physiological information. Currently, there no optimal algorithm that allows automatically information generate taking into...
In this work we study the radiative decay of dynamically generated ${J}^{P}=\frac{{1}^{\ensuremath{-}}}{2}$ charm baryons into ground state ${J}^{P}=\frac{{1}^{+}}{2}$ baryons. Since different theoretical interpretations these baryonic resonances and, in particular, ${\ensuremath{\Lambda}}_{c}(2595)$, give predictions, a precise experimental measurement decays would be an important step for understanding their nature.
The reaction time has been described as a measure of perception, decision making, and other cognitive processes. aim this work is to examine age-related changes in executive functions terms demand load under varying presentation times. Two tasks were employed where signal detection discrimination task performed by young older university students. Furthermore, characterization the response distribution an ex-Gaussian fit was carried out. results indicated that participants slower than younger...
In this talk I summarize recent findings around the description of axial vector mesons as dynamically generated states from interaction pseudoscalar and mesons, dedicating some attention to two K 1 (1270) states. Then review generation open hidden charm scalar states, how experiment supports existence new state predicted. present results showing that low lying 1/2 + baryon resonances for S = -1 can be obtained bound or one in coupled channels. show differences with 0 case, where N*(1710)...
A wide range of applications and research has been done with genome-scale metabolic models. In this work, we describe an innovative methodology for comparing networks constructed from models how to apply comparison in order infer evolutionary distances between different organisms. Our allows a quantification the differences species broad families even kingdoms. This is then applied reconstruct phylogenetic trees sets various
Word and face recognition are processes of interest for a large number fields, including both clinical psychology computer calculations. The research examined here aims to evaluate the role an online frequency’s ability predict word by examining stability these in given amount time. study will further examine differences between traditional theories current contextual frequency approaches. Reaction times were recorded through logarithmic transformation Bayesian approach. Bayes factor...