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Autor Dobado González, Antonio |
Documentos disponibles escritos por este autor (124)
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Ruiz Cembranos, José Alberto ; Dobado González, Antonio ; López Maroto, Antonio | American Physical Society | 2003-11We consider a general brane-world model parametrized by the brane tension scale f and the branon mass M. For a low tension compared to the fundamental gravitational scale, we calculate the relic branon abundance and its contribution to the cosmo[...]![]()
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Cruz Dombriz, Álvaro de la ; Dobado González, Antonio ; López Maroto, Antonio | Amer Inst Physics | 2009In the context of f(R) theories of gravity, we study the cosmological evolution of scalar perturbations by using a completely general procedure. We find that the exact fourth-order differential equation for the matter density perturbations in th[...]![]()
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Dobado González, Antonio ; Bargueño, P. ; Gonzalo Fonrodona, Isabel | EPL Association, European Physical Society | 2008-04We examine the effect of cold dark matter on the discrimination between the two enantiomers of a chiral molecule. We estimate the energy difference between the two enantiomers due to the interaction between fermionic WIMPs (weak interacting mass[...]![]()
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Delgado López, Rafael ; Dobado González, Antonio ; Llanes Estrada, Felipe José | Springer | 2017-03-31We define and calculate helicity partial-wave amplitudes for processes linking the Electroweak Symmetry Breaking Sector (EWSBS) to ? ? , employing (to NLO) the Higgs-EFT (HEFT) extension of the Standard Model and the Equivalence Theorem, while n[...]![]()
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Ruiz Cembranos, José Alberto ; Dobado González, Antonio ; López Maroto, Antonio | World Scientific Publ Co Pte Ltd | 2004-12Extra-dimensional theories contain additional degrees of freedom related to the geometry of the extra space which can be interpreted as new particles. Such theories allow to reformulate most of the fundamental problems of physics from a complete[...]![]()
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Ruiz Cembranos, José Alberto ; Dobado González, Antonio ; López Maroto, Antonio | American Physical Society | 2006-03We study the possibility to explain the nonbaryonic dark matter abundance and improve the present fits on the muon anomalous magnetic moment through the same new physics. In this work we show that massive brane fluctuations (branons) in large ex[...]![]()
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The possibility of a heavy supersymmetric spectrum at the Minimal Supersymmetric Standard Model is considered and the decoupling from the low energy electroweak scale is analyzed in detail. The formal proof of decoupling of supersymmetric partic[...]![]()
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Dobado González, Antonio ; Herrero, M.J. ; Peñaranda, Siannah | World Scientific Publ Co Pte Ltd | 1998A heavy supersymmetric spectrum at the Minimal Supersymmetric Standard Model is considered and the decoupling from the low energy electroweak scale is analyzed. A formal and partial proof of decoupling of supersymmetric particles in the limit wh[...]![]()
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In this work we report on the results obtained in a detailed and systematical study of the possibility to measure the parameters appearing in the electroweak chiral lagrangian. The main novelty of our approach is that we do not use the equivalen[...]![]()
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In this paper we study the Yukawa Higgs-quark-quark interactions that are generated from radiative corrections of squarks and gluinos, in the minimal supersymmetric standard model. We compute the corrections to the effective action for Higgs and[...]![]()
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Dobado González, Antonio ; Llanes Estrada, Felipe José ; Rodríguez Fernández, David | World Scientific Publ Co Pte Ltd | 2016-07-30We point out that in the early universe, for temperatures in the approximate interval 150-80 MeV (after the quark-gluon plasma), pions carried a large share of the entropy and supported the largest inhomogeneities. Its thermal conductivity (prev[...]![]()
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Cruz Dombriz, Álvaro de la ; Dobado González, Antonio ; López Maroto, Antonio | Amer Physical Soc | 2011-01-25![]()
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Dobado González, Antonio ; Llanes Estrada, Felipe José ; Torres Rincón, Juan M. | American Physical Society | 2009-01-07We present a calculation of eta/s for the meson gas (zero baryon number), with the viscosity computed within unitarized next-to-leading-order chiral perturbation theory, and confirm the observation that eta/s decreases towards the possible phase[...]![]()
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Dobado González, Antonio ; Llanes Estrada, Felipe José ; Torres Rincón, Juan M. | Amer Inst Physics | 2009The viscosity over entropy density ratio, or KSS number, can help isolate the critical point in the hadron phase-diagram in Relativistic Heavy Ion Collisions. We argue that this quantity does have a minimum at a phase transition or crossover. A[...]![]()
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Cruz Dombriz, Álvaro de la ; Dobado González, Antonio ; López Maroto, Antonio | American Physical Society | 2008-06In the context of f(R) theories of gravity, we study the evolution of scalar cosmological perturbations in the metric formalism. Using a completely general procedure, we find the exact fourth-order differential equation for the matter density pe[...]![]()
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Dobado González, Antonio ; Llanes Estrada, Felipe José ; Oller, Jose Antonio | Amer Physical Soc | 2012-01-20In general relativity, there is a maximum mass allowed for neutron stars that, if exceeded, entails collapse into a black hole. Its precise value depends on details of the nuclear matter equation of state, a subject where much progress has been [...]![]()
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In this work we consider the possibility of describing the current evolution of the universe, without the introduction of any cosmological constant or dark energy (DE), by modifying the Einstein-Hilbert (EH) action. In the context of the f(R) gr[...]![]()
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Ruiz Cembranos, José Alberto ; Cruz Dombriz, Álvaro de la ; Dobado González, Antonio ; Lineros, R. ; López Maroto, Antonio | IOP publishing ltd | 2011Annihilation of different dark matter (DM) candidates into Standard Model (SM) particles could be detected through their contribution to the gamma ray fluxes that are measured on the Earth. The magnitude of such contributions depends on the part[...]![]()
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We apply the one-loop results of the SU(3)L X SU(3)R chiral perturbation theory supplemented with the inverse-amplitude method to fit the available experimental data on pipi and piK scattering. With essentially only three parameters we describe [...]![]()
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Dobado González, Antonio ; Tabares Cheluci, Lourdes ; Peñaranda , Siannah | American Physical Society | 2007-04In this work we compute the contributions to the Higgs effective potential coming from the fermion and gauge boson sectors at the one-loop level in the context of the SU(5)/SO(5) littlest Higgs (LH) model using a cutoff Lambda and including all [...]![]()
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Dobado González, Antonio ; Morales, J. ; Peláez Sagredo, José Ramón ; Urdiales, M.T. | Elsevier Science BV | 1996-10-24In this paper we study the large N limit of the Standard Model Higgs sector with N lambda, Ng(2) and Ng('2) constant and N being the number of would-be Goldstone bosons, Despite the simplicity of this method at leading order, its results satisfy[...]![]()
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Based on a dispersive approach, we apply the inverse amplitude method to unitarize one-loop SU(2) and SU(3) chiral perturbation theory. Numerically, we find that this unitarization technique yields the correct complex analytic structure in terms[...]