68 citations · 496 across the 53 of their papers we have counts for
31 papers · 1 filter
Electromagnetic form factors of vector mesons in Einstein-dilaton holographic QCD
Alfonso Ballon-Bayona, Tobias Frederico, Luis A. H. Mamani +2
We investigate the electromagnetic form factors of the meson family within a holographic QCD framework based on Einstein-dilaton gravity with confining backgrounds. We obtain t…
Minkowski Space Dynamics and Light-Front Projection
Wayne de Paula, Tobias Frederico
We explore the connection between the four-dimensional Minkowski-space Bethe-Salpeter equation and its light-front projection, emphasizing the implications for bound-state dynamics…
Spectroscopy of charmonium-like mesons, heavy-light mesons with charm, AdS/QCD, and configurational entropy
A. E. Bernardini, W. de Paula, R. da Rocha
Heavy-light-flavor meson resonances with charm, in the and families, and charmonium-like states, in the and families, are explored and discussed in the A…
Quark stars in - holographic model
M. Aleixo, C. H. Lenzi, W. de Paula +1
This work investigates static and dynamical quark star properties within a holographic model. We solve the Tolman-Oppenheimer-Volkoff equations for the quark matter equat…
Kaon Structure in the Nuclear Medium within the Light Front Approach
G. H. S. O. Yabusaki, J. P. B. C. de Melo, K. Tsushima +2
We study the properties of the charged kaon in symmetric nuclear matter using a Bethe-Salpeter amplitude to model the quark-anti-quark bound state, which is well constrained by pre…
A dynamical holographic QCD model for spontaneous chiral symmetry breaking and confinement
Alfonso Ballon-Bayona, Tobias Frederico, Luis A. H. Mamani +1
In this paper, we present a holographic realization of spontaneous chiral symmetry breaking and confinement. The latter is realized by building a solution of 5d Einstein-dilaton gr…
Exploring the bound state with dressed quarks in Minkowski space
A. Castro, W. de Paula, E. Ydrefors +2
The Bethe-Salpeter equation for a pseudoscalar bound-system, with i) a ladder kernel with massive gluons, ii) dynamically-dressed quark mass function and iii) an extended quark-glu…
The chiral limit of a fermion-scalar system in covariant gauges
A. Noronha, W. de Paula, J. H. de Alvarenga Nogueira +3
The homogeneous Bethe-Salpeter equation (BSE) of a (1/2) bound system, that has both fermionic and bosonic degrees of freedom, that we call a {\em mock nucleon}, is studied in…
Configurational information measure of mesonic states in 4-flavor AdS/QCD
G. Karapetyan, W. de Paula, R. da Rocha
Strange axial-vector kaons, , and meson resonances are investigated in the 4-flavor AdS/QCD model. Their underlying differential configurational entropy is computed and…
Unpolarized transverse-momentum dependent distribution functions of a quark in a pion with Minkowskian dynamics
E. Ydrefors, W. de Paula, T. Frederico +1
The unpolarized twist-2 (leading) and twist-3 (subleading), T-even, transverse-momentum dependent quark distributions in the pion are evaluated for the first time by using the actu…
Pion inspired by QCD: Nakanishi and Light-Front Integral Representations
R. M. Moita, J. P. B. C. de Melo, T. Frederico +1
The pion structure in Minkowski space is explored using the Nakanishi integral representation. A general framework is developed for the pion Bethe-Salpeter amplitude based on the K…
Dynamical mass generation in Minkowski space at QCD scale
Dyana C. Duarte, Tobias Frederico, Wayne de Paula +1
We undertake the challenging task to reveal the properties of dressed light-quarks in the space- and time-like regions. For that aim, we solved the Dyson-Schwinger equation (DSE) i…
The parton distribution function in a pion with Minkowskian dynamics
W. de Paula, E. Ydrefors, J. H. Alvarenga Nogueira +2
The parton distribution of the pion is obtained for the first time from the solution of a dynamical equation in Minkowski space. The adopted equation is the homogeneous Bethe-Salpe…
Observing the Minkowskian dynamics of the pion on the null-plane
W. de Paula, E. Ydrefors, J. H. Alvarenga Nogueira +2
A dynamical model is applied to the study of the pion valence light-front wave function, obtained from the actual solution of the Bethe-Salpeter equation in Minkowski space, resort…
The soft-gluon limit and the infrared enhancement of the quark-gluon vertex
Orlando Oliveira, Tobias Frederico, Wayne de Paula
The Schwinger-Dyson quark equation (SDE) combined with results from lattice simulation for the propagators are used to obtain information on the quark-gluon vertex, taking into acc…
The Bethe-Salpeter approach to bound states: from Euclidean to Minkowski space
A. Castro, E. Ydrefors, W. de Paula +3
The challenge to obtain from the Euclidean Bethe--Salpeter amplitude the amplitude in Minkowski is solved by resorting to un-Wick rotating the Euclidean homogeneous integral equati…
In-Medium Electromagnetic Form Factor with a Symmetric Vertex in a Light Front Approach
George H. S. Yabusaki, J. P. B. C. de Melo, Wayne de Paula +2
Using the light-front kaon wave function based on a Bethe-Salpeter amplitude model for the quark-antiquark bound state, we study the Electromagnetic Form Factor (EMFF) of the kaon…
Excited states of the Wick-Cutkosky model with the Nakanishi representation in the Light-Front framework
R. Pimentel, W. de Paula
The Wick-Cutkosky model is investigated using the framework of the Nakanishi Perturbative Integral Representation projected in the Light-Front hyperplane for an s-wave amplitude. W…
Cosmological and Particle Physics Constraints on a New Non-Abelian SU(3) Gauge Model for Ordinary/Dark Matter Interaction
O. Oliveira, C. A. Bertulani, M. S. Hussein +2
We propose a mirror model for ordinary and dark matter that assumes a new SU(3) gauge group of transformations, as a natural extension of the Standard Model (SM). A close study of…
Final state interaction in with I=1/2 and 3/2 channels
K. S. F. F. Guimaræs, O. Lourenço, W. de Paula +2
The final state interaction contribution to decays is computed for the channel within a light-front relativistic three-body model for the final state interaction.…
Heavy meson decay in three-mesons and FSI
T. Frederico, K. S. F. F. Guimarães, O. Lourenço +3
The final state interaction (FSI) contribution to charged decay into is computed within a light-front framework, considering -wave interactions in and …
D+ -> K- pi+ pi+ : heavy meson decays and final state interactions
P. C. Magalhães, M. R. Robilotta, K. S. F. F. Guimarães +5
We show that final state interactions are important in shaping Dalitz plots for the decay $D^+ \rar K^- \p^+ \p^+$. The theoretical treatment of this reaction requires a blend of s…
Dark/Visible Parallel Universes and Big Bang Nucleosynthesis
C. A. Bertulani, T. Frederico, J. Fuqua +3
We develop a model for visible matter-dark matter interaction based on the exchange of a massive gray boson called herein the Mulato. Our model hinges on the assumption that all kn…
Hadrons in AdS/QCD models
W de Paula, T Frederico
We discuss applications of gauge/gravity duality to describe the spectrum of light hadrons. We compare two particular 5-dimensional approaches: a model with an infrared deformed An…