Información del autor
Autor Llanes Estrada, Felipe José |
Documentos disponibles escritos por este autor (114)
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A relativistic many-body calculation for an effective QCD Hamiltonians reported for exotic and charmed hybrid mesons. The nonexotic J(PC) = 1(--) charmonium spectrum now resolves the anonymous overpopulation of observed J/psi states. The exotic [...]texto impreso
We represent QCD at the hadronic scale by means of an effective Hamiltonian, H, formulated in the Coulomb gauge. As in the Nambu-Jona-Lasinio model, chiral symmetry is explicitly broken, however our approach is renormalizable and also includes c[...]texto impreso
We show how to fix the renormalization scale for hard scattering exclusive processes such as deeply virtual meson electroproduction by applying the BLM prescription to the imaginary part of the scattering amplitude and employing a fixed-t disper[...]texto impreso
Dobado González, Antonio ; Llanes Estrada, Felipe José ; Sanz Cillero, Juan José | Springer | 2018-03-26We examine the production of W h and Zh pairs at the LHC in the context of a Strongly Interacting Symmetry Breaking Sector of the Standard Model. Our description is based on a non-linear Higgs Effective Theory, including only the Standard Model [...]texto impreso
We construct a model for the quark-gluon vertex of Landau gauge QCD. This is of twofold interest: on the one hand the quark-gluon interaction is at the heart of quark confinement, on the other hand it is a central element in hadron phenomenology[...]texto impreso
Carrasco Millán, Pedro ; García-Ferrero, M. Ángeles ; Llanes Estrada, Felipe José ; Porras Riojano, Ana ; Sánchez García, Esteban M. | Elsevier Science BV | 2018-05We deploy Shannon’s information entropy to the distribution of branching fractions in a particle decay. This serves to quantify how important a given new reported decay channel is, from the point of view of the information that it adds to the al[...]texto impreso
Llanes Estrada, Felipe José ; Dobado González, Antonio ; Torres Rincón, Juan M. | American Physical Society | 2013-09-12We explore the viscosities of a photon gas by means of the Euler-Heisenberg effective theory and quantum electrodynamics at zero electron chemical potential. We find parametric estimates that show a very large shear viscosity and an extremely sm[...]texto impreso
Manuel, Cristina ; Dobado González, Antonio ; Llanes Estrada, Felipe José | Int School Advanced Studies | 2005-09We compute the mean free path and shear viscosity in the color-flavor locked (CFL) phase of dense quark matter at low temperature T, when the contributions of mesons, quarks and gluons to the transport coefficients are Boltzmann suppressed. CFL [...]texto impreso
We study the collisional aspects of jet quenching in a high-energy nuclear collision, especially in the final state pion gas. The jet has a large energy, and acquires momentum transverse to its axis more effectively by multiple soft collisions t[...]texto impreso
Ruiz Cembranos, José Alberto ; Villarrubia Rojo, Héctor ; Llanes Estrada, Felipe José ; Garay Elizondo, Luis Javier ; López Maroto, Antonio ; Fernández Sanz, David | 2018-06-19Esta memoria contiene los principales resultados del proyecto de innovación docente número 34 de la convocatoria 2017/2018 que lleva por título "Software libre como herramienta de aprendizaje en mecánica".texto impreso
García Fernández, Guillermo ; Guerrero Rojas, Jesús ; Llanes Estrada, Felipe José | Elsevier | 2017-02The gauge symmetry of the Standard Model is SU(3)_(c) x SU(2)_(L) x U(1)_(Y) for unknown reasons. One aspect that can be addressed is the low dimensionality of all its subgroups. Why not much larger groups like SU(7), or for that matter, SP(38) [...]texto impreso
García Fernández, Guillermo ; Guerrero Rojas, Jesús ; Llanes Estrada, Felipe José | Elsevier | 2019-12We point out an error in our previous work, that affects the claims made for the special Lie groups and for the SO(N-c) groups of lowest dimension, which are therefore retracted. Our earlier results stand for larger-dimension SO(N-c), as well as[...]texto impreso
Llanes Estrada, Felipe José ; Cabrera, Daniel ; Luciano M., Abreu ; Bratkovskaya, Elena ; Ramos, Angels ; Torres Rincón, Juan M. | IOP publishing ltd | 2014We present selected results on the properties of strange and heavy-flavoured mesons in a hot and dense nuclear medium, with emphasis in selfconsistent coupled-channel approaches based on the chiral Lagrangian. In the strangeness sector, we discu[...]texto impreso
Delgado López, Rafael ; Dobado González, Antonio ; Llanes Estrada, Felipe José | American Institute of Physics (AIP) | 2016The apparent finding of a 125 GeV light Higgs boson would close the minimal Standard Model (SM), that is weakly interacting. This is an exceptional feature not generally true if new physics exists beyond the mass gap found at the LHC up to 700 G[...]texto impreso
Dobado González, Antonio ; Delgado López, Rafael ; Llanes Estrada, Felipe José | American Institute of Physics | 2014The apparent finding of a 125-GeV light Higgs boson closes unitarity of the minimal Standard Model (SM), that is weakly interacting: this is an exceptional feature not generally true if new physics exists beyond the mass gap found at the LHC up [...]texto impreso
Delgado López, Rafael ; Dobado González, Antonio ; Llanes Estrada, Felipe José | Elsevier Sciende BV | 2016-04Recently, a new boson h has been discovered at the LHC which, so far, is compatible with the properties of the SM Higgs. However, the SM is not the most general low-energy dynamics for the minimal electroweak symmetry breaking sector with three [...]texto impreso
Llanes Estrada, Felipe José ; Fischer, Christian S. ; Alkofer, Reinhard ; Cassing, Wolfgang ; Watson, Peter | Elsevier Science BV | 2006-03We summarise recent results on the properties of gluons, quarks and light mesons from the Green's functions approach to QCD. We discuss a self-consistent, infrared power law solution for the Schwinger-Dyson equations of the 1PI Greens functions [...]texto impreso
We analyze the f(0)(1810) state recently observed by the BES collaboration via radiative J/psi decay to a resonant phi omega spectrum and confront it with DM2 data and glueball theory. The DM2 group only measured omega omega decays and reported [...]texto impreso
Llanes Estrada, Felipe José ; Alkofer, Reinhard ; Fischer, Christian S ; Schwenzer, Kai | Academic Press Inc Elsevier Science | 2009-01The infrared behavior of the quark–gluon vertex of quenched Landau gauge QCD is studied by analyzing its Dyson Schwinger equation. Building on previously obtained results for Green functions in the Yang–Mills sector, we analytically derive the e[...]texto impreso
We evaluate the ratio of shear viscosity to entropy density in a pion gas employing the Uehling-Uehlenbeck equation and experimental phase-shifts parameterized by means of the SU(2) inverse amplitude method. We find that the ratio for this monoc[...]texto impreso
Dobado González, Antonio ; Llanes Estrada, Felipe José ; Torres Rincón, Juan M. | American Institute of Physics | 2008In this work we briefly review the Kovtun-Son-Starinet (KSS) computation of the ratio eta/s for quantum field theories with gravitational dual and the related conjecture that it is bound from below by 1/4 pi. We discuss the validity of the bound[...]texto impreso
Gómez Nicola, Ángel ; Dobado González, Antonio ; Llanes Estrada, Felipe José | American Institute of Physics | 2003We report on our recent work about the description of a meson gas below the chiral phase transition within the framework of Chiral Perturbation Theory. As an alternative to the standard treatment, we present a calculation of the quark condensate[...]texto impreso
Dobado González, Antonio ; Gómez Nicola, Ángel ; Llanes Estrada, Felipe José ; Peláez Sagredo, José Ramón | Amer Physical Soc | 2002-11We study the temperature evolution of the rho and sigma mass and width, using a unitary chiral approach. The one-loop pipi scattering amplitude in chiral perturbation theory at Tnot equal0 is unitarized via the inverse amplitude method. Our resu[...]texto impreso
Llanes Estrada, Felipe José ; Hidalgo Duque, Carlos ; Delgado López, Rafael | Springer Wien | 2013-11Experimental verifications of confinement in hadron physics have established the absence of charges with a fraction of the electron's charge by studying the energy deposited in ionization tracks at high energies, and performing Millikan experime[...]texto impreso
Castillo, Andrés ; Delgado López, Rafael ; Dobado González, Antonio ; Llanes Estrada, Felipe José | Springer | 2017-07-01By considering a non-linear electroweak chiral Lagrangian, including the Higgs, coupled to heavy quarks, and the equivalence theorem, we compute the one-loop scattering amplitudes W^(+)W^(?) ? t?, Z Z ? t? and hh ? t? (in the regime M^(2)_(t)/v^[...]