70 citations · 547 across the 48 of their papers we have counts for
17 papers · 1 filter
Mapping chiral symmetry breaking in the excited baryon spectrum
Pedro Bicudo, Marco Cardoso, Felipe J. Llanes-Estrada +1
We study the conjectured "Insensitivity to Chiral Symmetry Breaking" in the highly excited light baryon spectrum. While the experimental spectrum is being measured at JLab and CBEL…
Tetraquark bound states and resonances in the unitary and microscopic triple string flip-flop quark model, the light-light-antiheavy-antiheavy case study
P. Bicudo, M. Cardoso
We address exotic tetraquark bound states and resonances with a fully unitarized and microscopic quark model. We propose a triple string flip-flop potential, ins…
An unitarized model for tetraquarks with a color flip-flip potential
Marco Cardoso, Pedro Bicudo
In this work, a color structure dependent flip-flop potential is developed for the two quarks and two antiquarks system. Then, this potential is applied to a microscopic quark mode…
electromagnetic decay in a coupled-channel model
Marco Cardoso, George Rupp, Eef van Beveren
A multichannel Schrödinger equation with both quark-antiquark and meson-meson components, using a harmonic-oscillator potential for confinement and a delta-shell string-…
Unquenched quark-model calculation of X(3872) electromagnetic decays
Marco Cardoso, George Rupp, Eef van Beveren
A recent quark-model description of X(3872) as an unquenched state is generalised by now including all relevant meson-meson configurations, in order to…
Study of Tetraquarks with a simple model
Marco Cardoso, Pedro Bicudo, Nuno Cardoso
Tetraquarks are studied with an approximation which reduces the in- ternal degrees of freedom of the system, using both finite differences and scattering theory. The existence of b…
The chiral crossover, static-light and light-light meson spectra, and the deconfinement crossover
Pedro Bicudo, Nuno Cardoso, Marco Cardoso
We study the chiral crossover, the spectra of light-light and of static-light mesons and the deconfinement crossover at finite temperature T. Our framework is the confining and chi…
Coulomb Gauge QCD and the Excited Hadron Spectrum
Felipe J. Llanes-Estrada, Stephen R. Cotanch, Tim van Cauteren +3
We discuss progress in understanding the light and heavy quark excited hadron spectrum from Coulomb gauge QCD. For light quark systems we highlight the insensitivity to spontaneous…
Tetraquark resonances, flip-flop and cherry in a broken glass model
P. Bicudo, M. Cardoso, N. Cardoso
We develop a formalism to study tetraquarks using the generalized flip-flop potential, which include the tetraquark potential component. Technically this is a difficult problem, ne…
Tetraquark resonances with the triple flip-flop potential, decays in the cherry in a broken glass approximation
Pedro Bicudo, Marco Cardoso
We develop a unitarized formalism to study tetraquarks using the triple flip-flop potential, which includes two meson-meson potentials and the tetraquark four-body potential. This…
Using highly excited baryons to catch the quark mass
T. Van Cauteren, P. Bicudo, M. Cardoso +1
Chiral symmetry in QCD can be simultaneously in Wigner and Goldstone modes, depending on the part of the spectrum examined. The transition regime between both, exploiting for examp…
Bottomonium melting at temperature well above Tc
Pedro Bicudo, Joao Seixas, Marco Cardoso
We fit the lattice QCD data of Kaczmarek et al for the free energy F1 and internal energy U1 with a class of Coulomb, constant and linear potentials, both pure and screened, matchi…
Probing the infrared quark mass from highly excited baryons
P. Bicudo, M. Cardoso, T. Van Cauteren +1
We argue that three-quark excited states naturally group into quartets, split into two parity doublets, and that the mass splittings between these parity partners decrease higher u…
Parity doubling in the high baryon spectrum: near-degenerate three-quark quartets
Felipe J. Llanes-Estrada, Pedro Bicudo, Marco Cardoso +1
We report on the first calculation of excited baryons with a chirally symmetric Hamiltonian, modeled after Coulomb gauge QCD (or upgraded from the Cornell meson potential model to…
Microscopic calculation of the decay of Jaffe-Wilczek tetraquarks, and the Z(4433)
Marco Cardoso, Pedro Bicudo
Here the tetraquarks are studied a la Jaffe and Wilczek. The decay width is fully computed with a microscopic quark model, using the resonating group method.
The Charmonium (Bottomonium) binding ate finite T
P. Bicudo, M. Cardoso, P. Santos +1
The charmonium (bottomonim) binding at finite temperature is studied with static potentials extracted from the lattice QCD data of Kaczmarek et al. The bottomonium spectrum is also…
Confinement of monopole field lines in a superconductor at T=/=0
Marco Cardoso, Pedro Bicudo, Pedro D. Sacramento
We apply the Bogoliubov-de Gennes equations to the confinement of a monopole-antimonopole pair in a superconductor. This is related to the problem of a quark-antiquark pair bound b…