Construction of spectral functions for medium-mass nuclei

Ankowski, Artur M.; Sobczyk, J. T.

doi:10.1103/physrevc.77.044311

Cited by 72 publications

(106 citation statements)

References 40 publications

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“…In what follows, we discuss a method proposed in Ref. [44] and present the results we obtained with this method.…”

Section: B the Role Of Fsimentioning

confidence: 99%

“…The terms E k , E p , E p , and E represent the initial electron energy, the energy of the nucleon inside the nucleus, the ejected nucleon energy, and the removal energy, respectively (see Ref. [44] for details).…”

Section: B the Role Of Fsimentioning

confidence: 99%

“…[44], two types of FSI effects, Pauli blocking and the interaction of the struck nucleon with the spectator system described by means of the timeindependent optical potential (OP),…”

Section: B the Role Of Fsimentioning

confidence: 99%

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Scaling function, spectral function, and nucleon momentum distribution in nuclei

et al. 2011

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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 independent particle model are employed, together with the inclusion of nucleon correlations, and effects of the energy dependence arising from the width of the hole states are investigated. Although some of these approaches provide rough overall agreement with data, they are not found to be capable of reproducing one of the distinctive features of the experimental scaling function, namely its asymmetry. However, the addition of final-state interactions, incorporated in the present study using either relativistic mean-field theory or via a complex optical potential, does lead to asymmetric scaling functions in accordance with data. The present analysis seems to indicate that final-state interactions constitute an essential ingredient and are required to provide a proper description of the experimental scaling function.

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“…In what follows, we discuss a method proposed in Ref. [44] and present the results we obtained with this method.…”

Section: B the Role Of Fsimentioning

confidence: 99%

Section: B the Role Of Fsimentioning

confidence: 99%

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Scaling function, spectral function, and nucleon momentum distribution in nuclei

et al. 2011

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“…As most of the nucleons in the nucleus can be described as occupying single-particle states in a mean field potential [14] we can neglect NN interactions for the initial nucleons (holes) and take ImE = 0. Then, Sh{p) -^ 5{p^ -miff) and we recover the description of the initial state outlined in the previous paragraph.…”

Section: The Modelmentioning

confidence: 99%

Quasielastic Scattering at MiniBooNE Energies

Alvarez‐Ruso¹,

Buß²,

Leitner³

et al. 2009

AIP Conference Proceedings

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Abstract. We present our description of neutrino induced charged current quasielastic scattering (CCQE) in nuclei at energies relevant for the MiniBooNE experiment. In our framework, the nucIcons, with initial momentum distributions according to the Local Fermi Gas model, move in a density-and momentum-dependent mean field potential. The broadening of the outgoing nucleons due to nucleon-nucleon interactions is taken into account by spectral fimctions. Long range (RPA) correlations renormalizing the electroweak strength in the medium are also incorporated. The background from resonance excitation events that do not lead to pions in the final state is also predicted by propagating the outgoing hadrons with the Giessen semiclassical BUU model in coupled channels (GiBUU). We achieve a good description of the shape of the CCQE Q^ distribution extracted from data by MiniBooNE, thanks to the inclusion of RPA correlations, but imderestimate the integrated cross section when the standard value of M^ = 1 GeV is used. Possible reasons for this mismatch are discussed.

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“…[27] concerning two types of FSI effects, the Pauli blocking and the interaction of the struck nucleon with the spectator system by means of the time-independent optical potential (OP) U = V − ıW . The latter can be accounted for [28] by the replacing in the PWIA expression for the inclusive electron-nucleus scattering cross section…”

Section: Theoretical Scheme and Resultsmentioning

confidence: 99%

Nuclear effects in (anti)neutrino charge-current quasielastic scattering at MINER νA kinematics

Ivanov

Antonov

Megías

et al. 2018

J. Phys.: Conf. Ser.

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Abstract. We compare the characteristics of the charged-current quasielastic (anti)neutrino scattering obtained in two different nuclear models, the phenomenological SuperScaling Approximation and the model using a realistic spectral function S(p, E) that gives a scaling function in accordance with the (e, e ) scattering data, with the recent data published by the MiniBooNE, MINERνA, and NOMAD collaborations. The spectral function accounts for the nucleon-nucleon (NN ) correlations by using natural orbitals from the Jastrow correlation method and has a realistic energy dependence. Both models provide a good description of the MINERνA and NOMAD data without the need of an ad hoc increase of the value of the mass parameter in the axial-vector dipole form factor. The models considered in this work, based on the the impulse approximation (IA), underpredict the MiniBooNE data for the flux-averaged charged-current quasielastic ν µ(νµ) + 12 C differential cross section per nucleon and the total cross sections, although the shape of the cross sections is represented by the approaches. The discrepancy is most likely due to missing of the effects beyond the IA, e.g., those of the 2p-2h meson exchange currents that have contribution in the transverse responses.

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Construction of spectral functions for medium-mass nuclei

Cited by 72 publications

References 40 publications

Scaling function, spectral function, and nucleon momentum distribution in nuclei

Scaling function, spectral function, and nucleon momentum distribution in nuclei

Quasielastic Scattering at MiniBooNE Energies

Nuclear effects in (anti)neutrino charge-current quasielastic scattering at MINER νA kinematics

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