36 citations · 226 across the 46 of their papers we have counts for
25 papers · 1 filter
Neutrino oscillation in a minimal length spacetime
Luísa Nadal Camargo, Thiago Oliveira Ferreira, Dimiter Hadjimichef +1
We investigate how neutrino oscillations are modified in a non-commutative spacetime characterized by a minimal length scale, described by the Quesne-Tkachuk algebra. By incorporat…
Brazilian Report on Dark Matter 2024
I. F. M. Albuquerque, J. Alcaniz, A. Alves +51
One of the key scientific objectives for the next decade is to uncover the nature of dark matter (DM). We should continue prioritizing targets such as weakly-interacting massive pa…
Semiclassical Effects in Color Flavor Locked Strange Stars
Guilherme Lorenzatto Volkmer, Dimiter Hadjimichef
Strange stars in the color flavor locked phase, as described by a generalization of the phenomenological MIT bag model proposed in the context of color superconductivity, are studi…
Charmonium decay in the C3P0 Model
A. A. El-Hameed, G. S. Hassan, D. T. da Silva +2
In this work, we use the model to calculate the decay widths of the low lying charmonium states, nominally and , in the following comm…
Ground Level Muon Flux Variation in a Cosmic Rays Simulation
E. G. Pereira, C. A. Z. Vasconcellos, D. Hadjimichef
The oscillatory movements of atmospheric air masses has been claimed to be the origin of the muon flux variation measured at the ground level. Using a cosmic ray toolkit (CORSIKA),…
Non-inertial effects on CP-violating systems
V. M. G. Silveira, C. A. Z. Vasconcellos, E. G. S. Luna +1
An analysis of accelerated kaon decays based on the Unruh effect shows a slight decrease in a CP-violation parameter for very high accelerations, as a consequence of the previously…
Strong decays of strange quarkonia in a corrected 3P0 model
J. N. de Quadros, D. T. da Silva, M. L. L. da Silva +1
Extensively applied to both light and heavy meson decay and standing as one of the most successful strong decay models is the model, in which pair production…
Brazilian Community Report on Dark Matter
E. Abdalla, I. F. M. Albuquerque, A. Alves +52
This white paper summarizes the activities of the Brazilian community concerning dark matter physics and highlights the importance of financial support to Brazilian groups that are…
QCD effective charges and the structure function at small-: Higher twist effects
D. Hadjimichef, E. G. S. Luna, M. Peláez
We consider the effect of higher twist operators of the Wilson operator product expansion in the structure function at small-, taking into account QCD effective…
Fine-tuning in scalar meson decay with bound-state corrections
M. L. L. da Silva, D. T. da Silva, C. A. Z. Vasconcellos +1
The glueball-quarkonia mixture decay amplitude has been evaluated, in the literature, by diagrammatic techniques for drawing quark lines and the quark-gluon vertex. In this paper w…
Massive dark photons in a Higgs portal model
Dimiter Hadjimichef
An extension of the Standard Model with a hidden sector which consists of gauge singlets (a Dirac fermion and a scalar ) plus a vector boson (dark massive photon) is s…
Astrophysical aspects of milli-charged dark matter in a Higgs-Stueckelberg model
A. L. dos Santos, D. Hadjimichef
An extension of the Standard Model is studied, in which two new vector bosons are introduced, a first boson coupled to the SM by the usual minimal coupling, producing an enlar…
CP Violation in Dual Dark Matter
C. A. Z. Vasconcellos, D. Hadjimichef
In this paper we study the consequences of extending dual symmetry (DuSy) to include a generic vector field as a dual partner of the photon . A new combined field, the c…
Searching for a dark matter coupling to the Standard Model with a Stueckelberg extension
A. L. dos Santos, D. Hadjimichef
We investigate a double extension to the Standard Model (SM). A first extension introduces, via minimal coupling, a massive boson. This enlarged SM is coupled to a dark matter…
Light meson decay in the c3p0 model
J. N. De Quadros, D. T. Da Silva, M. L. L. Da Silva +1
Having its origin in a successful mapping technique, the Fock-Tani formalism, the corrected 3P0 model (C3P0) retains the basic aspects of the 3P0 predictions with the inclusion of…
Meson decay in a corrected model
D. T. da Silva, M. L. L. da Silva, J. N. de Quadros +1
Extensively applied to both light and heavy meson decay and standing as one of the most successful strong decay models is the model, in which pair production is…
Do glueballs contribute in heavy ion collisions?
M. L. L. da Silva, D. Hadjimichef, C. A. Z. Vasconcellos +1
In heavy ion collision simulations many hadron states and/or parton degrees of freedom are included in order to obtain the observables. Meson spectroscopy, for example, considers t…
Glueball decay in the Fock-Tani formalism
D. T. da Silva, M. L. L. da Silva, D. Hadjimichef +1
We investigate the two-meson decay modes for . In this calculation we consider this resonance as a glueball. The Fock-Tani formalism is introduced to calculate the decay…
Meson decay in the Fock-Tani Formalism
D. T. da Silva, M. L. L. da Silva, D. Hadjimichef +1
The Fock-Tani formalism is a first principle method to obtain effective interactions from microscopic Hamiltonians. Usually this formalism was applied to scattering, here we introd…
Electromagnetic structure and weak decay of pseudoscalar mesons in a light-front QCD-inspired model
L. A. M. Salcedo, J. P. B. C. de Melo, D. Hadjmichef +1
We study the scaling of the meson mass splitting and the pseudoscalar weak decay constants with the mass of the meson, as seen in the available experimental data. We…
Glueball-glueball scattering in a constituent gluon model
M. L. L. da Silva, D. Hadjimichef, C. A. Z. Vasconcellos
In this work we use a mapping technique to derive in the context of a constituent gluon model an effective Hamiltonian that involves explicit gluon degrees of freedom. We study glu…
Glueball-Glueball Interaction in The Context of an Effective Theory
M. L. L. da Silva, D. Hadjimichef
In this work we use a mapping technique to derive in the context of a constituent gluon model an effective Hamiltonian that involves explicit gluon degrees of freedom. We study glu…
KN interaction in the quark-gluon exchange framework
Dimiter Hadjimichef
The general meson-baryon potential obtained in the context of the Fock-Tani formalism is applied in the system. A simple spin-dependent interaction on quark level is used…
Mapping of composite hadrons into elementary hadrons and effective hadronic Hamiltonians
D. Hadjimichef, G. Krein, S. Szpigel +1
A mapping technique is used to derive in the context of constituent quark models effective Hamiltonians that involve explicit hadron degrees of freedom. The technique is based on t…