Browsing MIT Open Access Articles by Author "Caballero, J. A."
Now showing items 1-20 of 21
-
Angular distribution in two-particle emission induced by neutrinos and electrons
Simo, I. Ruiz; Albertus, C.; Amaro, J. E.; Barbaro, M. B.; Caballero, J. A.; e.a. (American Physical Society, 2014-09)The angular distribution of the phase space arising in two-particle emission reactions induced by electrons and neutrinos is computed in the laboratory (Lab) system by boosting the isotropic distribution in the center of ... -
Asymmetric relativistic Fermi gas model for quasielastic lepton-nucleus scattering
Barbaro, M. B.; De Pace, A.; Caballero, J. A.; Megias, G. D.; Van Orden, J. W.; e.a. (American Physical Society, 2018-09)We develop an asymmetric relativistic Fermi gas model for the study of the electroweak nuclear response in the quasielastic region. The model takes into account the differences between neutron and proton densities in ... -
Constraints in modeling the quasielastic response in inclusive lepton-nucleus scattering
González-Jiménez, R.; Barbaro, M. B.; Caballero, J. A.; Donnelly, T William; Jachowicz, N.; e.a. (American Physical Society (APS), 2020-01)We show that the quasielastic (QE) response calculated with the superscaling approach (SuSAv2) model, that relies on the scaling phenomenon observed in the analysis of (e,e^{′}) data and on the relativistic mean-field ... -
Density dependence of 2p-2h meson-exchange currents
Amaro, J. E.; Barbaro, M. B.; Caballero, J. A.; De Pace, A.; Megias, G. D.; e.a. (American Physical Society, 2017-06) -
Emission of neutron-proton and proton-proton pairs in electron scattering induced by meson-exchange currents
Simo, I. Ruiz; Amaro, J. E.; Barbaro, M. B.; De Pace, A.; Caballero, J. A.; e.a. (American Physical Society, 2016-11)We use a relativistic model of meson-exchange currents to compute the proton-neutron and proton-proton yields in (e,e′) scattering from [superscript 12]C in the 2p-2h channel. We compute the response functions and cross ... -
Extensions of superscaling from relativistic mean field theory: The SuSAv2 model
Megias, G. D.; Barbaro, M. B.; Caballero, J. A.; Gonzalez-Jimenez, R.; Donnelly, T William (American Physical Society, 2014-09)We present a systematic analysis of the quasielastic scaling functions computed within the relativistic mean field (RMF) theory and we propose an extension of the superscaling approach (SuSA) model based on these results. ... -
Global analysis of parity-violating asymmetry data for elastic electron scattering
Caballero, J. A.; Gonzalez-Jimenez, R.; Donnelly, T William (American Physical Society, 2014-08)We perform a statistical analysis of the full set of parity-violating asymmetry data for elastic electron scattering including the most recent high precision measurement from Q-weak. Given the basis of the present analysis, ... -
Meson-exchange currents and final-state interactions in quasielastic electron scattering at high momentum transfers
Amaro, J. E.; Barbaro, M. B.; Caballero, J. A.; Maieron, C.; Udias, J. M.; e.a. (American Physical Society, 2010-01)The effects of meson-exchange currents (MEC) are computed for the one-particle one-hole transverse response function for finite nuclei at high momentum transfers q in the region of the quasi-elastic peak. A semirelativistic ... -
Meson-exchange currents and quasielastic neutrino cross sections in the superscaling approximation model
Amaro, J. E.; Barbaro, M. B.; Caballero, J. A.; Donnelly, T. William (American Physical Society, 2012-04)We evaluate quasielastic double-differential antineutrino cross sections obtained in a phenomenological model based on the superscaling behavior of electron scattering data and estimate the contribution of the vector ... -
Meson-exchange currents and quasielastic predictions for charged-current neutrino-[superscript 12]C scattering in the superscaling approach
Megias, G. D.; Caballero, J. A.; De Pace, A.; Barbaro, M. B.; Alberico, W. M.; e.a. (American Physical Society, 2015-04)We evaluate and discuss the impact of meson-exchange currents (MECs) on charged-current quasielastic neutrino cross sections. We consider the nuclear transverse response arising from two-particle two-hole states excited ... -
Neutrino-nucleus scattering in the SuSA model
Amaro, J. E.; Barbaro, M. B.; Caballero, J. A.; Donnelly, T. W.; González-Jiménez, R.; e.a. (Springer Berlin Heidelberg, 2021-10-25)Abstract The super-scaling approach (SuSA) model, based on the analogies between electron and neutrino interactions with nuclei, is reviewed and its application to the description of neutrino-nucleus scattering ... -
Nuclear effects in neutrino and antineutrino charged-current quasielastic scattering at MINERvA kinematics
Megias, G. D.; Ivanov, M. V.; Barbaro, M. B.; Caballero, J. A.; Donnelly, T. William; e.a. (American Physical Society, 2014-05)We compare the charged-current quasielastic neutrino and antineutrino observables obtained in two different nuclear models, the phenomenological SuperScaling Approximation and the relativistic mean field approach, with the ... -
Parity violation and dynamical relativistic effects in ([ ⃗ over e],e[superscript ′]N) reactions
Caballero, J. A.; Gonzalez-Jimenez, R.; Donnelly, T William (American Physical Society, 2015-04)It is well known that coincidence quasielastic ([ ⃗ over e],e[superscript ′]N) reactions are not appropriate to analyze effects linked to parity violation due the presence of the fifth electromagnetic response R[superscript ... -
Parity violation in quasielastic electron-nucleus scattering within the relativistic impulse approximation
Caballero, J. A.; Gonzalez-Jimenez, R.; Donnelly, T William (American Physical Society, 2015-04)We study parity violation in quasielastic electron-nucleus scattering using the relativistic impulse approximation. Different fully relativistic approaches have been considered to estimate the effects associated with the ... -
Pionic correlations and meson-exchange currents in two-particle emission induced by electron scattering
Amaro, Jose Enrique; Maieron, C.; Caballero, J. A.; Donnelly, T William (American Physical Society, 2010-10)Two-particle two-hole contributions to electromagnetic response functions are computed in a fully relativistic Fermi gas model. All one-pion exchange diagrams that contribute to the scattering amplitude in perturbation ... -
Realistic spectral function model for charged-current quasielastic-like neutrino and antineutrino scattering cross sections on
Ivanov, M. V.; Antonov, A. N.; Megias, G. D.; Caballero, J. A.; Barbaro, M. B.; e.a. (American Physical Society, 2019-01)A detailed study of charged current quasielastic neutrino and antineutrino scattering cross sections on a ^{12}C target with no pions in the final state is presented. The initial nucleus is described by means of a realistic ... -
Relativistic analyses of quasielastic neutrino cross sections at MiniBooNE kinematics
Amaro, J. E.; Barbaro, M. B.; Caballero, J. A.; Udías, J. M.; Donnelly, T William (American Physical Society, 2011-08)Two relativistic approaches are considered to evaluate the quasielastic double-differential and integrated neutrino-nucleus cross sections. One, based on the relativistic impulse approximation, relies on the microscopic ... -
Relativistic effects in two-particle emission for electron and neutrino reactions
Simo, I. Ruiz; Albertus, C.; Amaro, J. E.; Barbaro, M. B.; Caballero, J. A.; e.a. (American Physical Society, 2014-08)Two-particle two-hole contributions to electroweak response functions are computed in a fully relativistic Fermi gas, assuming that the electroweak current matrix elements are independent of the kinematics. We analyze the ... -
Scaling function and nucleon momentum distribution
Ivanov, M. V.; Antonov, A. N.; Barbaro, M. B.; Caballero, J. A.; Donnelly, T William (American Physical Society, 2010-05)Scaling studies of inclusive quasielastic electron scattering reactions have been used in the past as a basic tool to obtain information on the nucleon momentum distribution in nuclei. However, the connection between the ... -
Scaling function, spectral function, and nucleon momentum distribution in nuclei
Antonov, A. N.; Ivanov, M. V.; Caballero, J. A.; Barbaro, M. B.; Udias, J. M.; e.a. (American Physical Society, 2011-04)The link between the scaling function extracted from the analysis of (e,e') cross sections and the spectral function/momentum distribution in nuclei is revisited. Several descriptions of the spectral function based on the ...