Meson exchange currents in deep inelastic electron scattering from nuclei

Donnelly, T. W.; Orden, J. W. Van; Forest, T. de; Hermans, W.C.

doi:10.1016/0370-2693(78)90890-0

Cited by 71 publications

(34 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…On the other hand, higher energy data from the NOMAD experiment (E ν ∼ 3-100 GeV) are well accounted for by IA models [9]. The MINERνA experiment is situated in between these two energy regions, and its interpretation can therefore provide valuable information on the long-standing problem of assessing the role of correlations and meson exchange currents (MECs) in the nuclear dynamics [10][11][12].…”

Section: Introductionmentioning

confidence: 99%

Nuclear effects in neutrino and antineutrino charged-current quasielastic scattering atMINERνAkinematics

et al. 2014

View full text Add to dashboard Cite

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 recent data published by the MINERνA Collaboration. Both models provide a good description of the data without the need of an ad hoc increase in the mass parameter in the axial-vector dipole form factor. Comparisons are also made with the MiniBooNE results, where different conclusions are reached.

show abstract

Section: Introductionmentioning

confidence: 99%

Nuclear effects in neutrino and antineutrino charged-current quasielastic scattering atMINERνAkinematics

et al. 2014

View full text Add to dashboard Cite

show abstract

“…This 7D integral has to be performed numerically [22,23]. Under some approximations [24][25][26][27] the number of dimensions can be further reduced, but this cannot be done in the fully relativistic calculation.…”

Section: Formalism a Lab Framementioning

confidence: 99%

Angular distribution in two-particle emission induced by neutrinos and electrons

et al. 2014

View full text Add to dashboard Cite

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 mass (CM) system used in Monte Carlo generators. The Lab distribution has a singularity for some angular values, coming from the Jacobian of the angular transformation between CM and Lab systems. We recover the formula we obtained in a previous calculation for the Lab angular distribution. This is in accordance with the Monte Carlo method used to generate twoparticle events for neutrino scattering [1]. Inversely, by performing the transformation to the CM system, it can be shown that the phase-space function, which is proportional to the two particle-two hole (2p-2h) hadronic tensor for a constant current operator, can be computed analytically in the frozen nucleon approximation, if Pauli blocking is absent. The results in the CM frame confirm our previous work done using an alternative approach in the Lab frame. The possibilities of using this method to compute the hadronic tensor by a boost to the CM system are analyzed.

show abstract

“…Recently, the scaling idea has been pushed one step further (Donnelly and Sick, 1999). Motivated by the Fermi-gas model, in which all momentum distributions only differ by an overall scale factor -the Fermi momentum -Donnelly and Sick have investigated whether the scaling functions of different nuclei also can be related to each other, by adjusting one overall scale factor.…”

Section: Fig 15 Cross Sections Formentioning

confidence: 99%

“…Longitudinal superscaling function extracted (Donnelly and Sick, 1999) from the available data on C, Ca and F e for momentum transfers between 300 and 570MeV/c.…”

Section: Fig 20mentioning

confidence: 99%

Electron-nucleus Scattering

Benhar¹,

Fabrocini²,

Schiavilla³

1994

View full text Add to dashboard Cite

This article presents a review of the field of inclusive quasi-elastic electron-nucleus scattering. It discusses the approach used to measure the data and includes a compilation of data available in numerical form. The theoretical approaches used to interpret the data are presented. A number of results obtained from the comparison between experiment and calculation are then reviewed. The analogies and differences to other fields of physics exploiting quasi-elastic scattering from composite systems are pointed out. I. INTRODUCTIONThe energy spectrum of high-energy leptons (electrons in particular) scattered from a nuclear target displays a number of features. At low energy loss (ω) peaks due to elastic scattering and inelastic excitation of discrete nuclear states appear; a measurement of the corresponding form factors as a function of momentum transfer |q| gives access to the Fourier transform of nuclear (transition) densities. At larger energy loss, a broad peak due to quasi-elastic electron-nucleon scattering appears; this peak -very wide due to nuclear Fermi motion -corresponds to processes where the electron scatters from an individual, moving nucleon, which, after interaction with other nucleons, is ejected from the target. At even larger ω peaks that correspond to excitation of the nucleon to distinct resonances are visible. At very large ω, a structureless continuum due to Deep Inelastic Scattering (DIS) on quarks bound in nucleons appears. A schematic spectrum is shown in Fig. 1. At momentum transfers above approximately 500 MeV/c the dominant feature of the spectrum is the quasi-elastic peak.A number of questions have been investigated using quasi-elastic scattering:• The quasi-elastic cross section integrated over electron energy loss is proportional to the sum of electron-nucleon cross sections. Historically, this has been exploited in order to measure the neutron charge and magnetic form factors using mainly light (A < 4) nuclear targets. Today the emphasis has shifted to exposing possible medium modifications of the nucleon form factors. * Electronic address: benhar@roma1.infn.it † Electronic address: dbd@virginia.edu ‡ Electronic address: ingo.sick@unibas.ch

show abstract

Meson exchange currents in deep inelastic electron scattering from nuclei

Cited by 71 publications

References 10 publications

Nuclear effects in neutrino and antineutrino charged-current quasielastic scattering atMINERνAkinematics

Nuclear effects in neutrino and antineutrino charged-current quasielastic scattering atMINERνAkinematics

Angular distribution in two-particle emission induced by neutrinos and electrons

Electron-nucleus Scattering

Contact Info

Product

Resources

About