Global relativistic folding optical potential and the relativistic Green's function model

Ivanov, M. V.; Vignote, J. R.; Álvarez-Rodríguez, R.; Meucci, Andrea; Giusti, C.; Udı́as, J. M.

doi:10.1103/physrevc.94.014608

Cited by 17 publications

(19 citation statements)

References 109 publications

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“…T N is in the lab frame and in MeV. This approach is similar to the EDAD1 and EDAI discussed above in the sense that it uses real potentials that decrease with energy, however, it presents some advantages: i) for knockout nucleons with small energies (T p < 100 MeV), consequently when the overlap between initial and final state is nonnegligible, the ED-RMF potentials essentially coincide with the original RMF ones, preventing non-orthogonality issues (similar approaches were employed in [10,29]); ii) for scattered nucleons with larger energies (T p > 1100 MeV) the potentials tend to a minimum value (following the behavior suggested by the SuSAv2 model). This avoids the problem of the optical potentials when they need to be used outside the region of the fit.…”

Section: Modelsmentioning

confidence: 99%

Constraints in modeling the quasielastic response in inclusive lepton-nucleus scattering

et al. 2020

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We show that the quasielastic (QE) response calculated with the SuSAv2 (superscaling approach) model, that relies on the scaling phenomenon observed in the analysis of (e, e ′ ) data and on the relativistic mean-field theory, is very similar to that from a relativistic distorted wave impulse approximation model when only the real part of the optical potentials is employed. The coincidence between the results from these two completely independent approaches, which satisfactorily agree with the inclusive data, reinforces the reliability of the quasielastic predictions stemming from both models and sets constraints for the QE response. We also study the low energy and momentum transfer region of the inclusive response by confronting the results of the relativistic mean-field model with those of the Hartree-Fock continuum random-phase approximation model, which accounts for nuclear long-range correlations. Finally, we present a comparison of our results with the recent JLab (e, e ′ ) data for argon, titanium and carbon, finding good agreement with the three data sets.

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Section: Modelsmentioning

confidence: 99%

Constraints in modeling the quasielastic response in inclusive lepton-nucleus scattering

et al. 2020

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“…3 shows the extracted values of nuclear potentials and Δ versus kinetic energy T for 12 6 C. Shown are values of (small black markers) for 33 12 6 and four 16 8 inclusive electron scattering spectra [2]. Also shown are prediction for calculated by and Jose Manuel Udias [4] and Artur. M. Ankowski [5] using the theoretical formalisms of Cooper 1993[6] and Cooper 2009 [7].…”

Section: Resultsmentioning

confidence: 99%

Nuclear Potential of Final State Nucleons and Nucleons Plus Single Pions in Lepton Nucleus Scattering

Bodek¹,

Cai²

2021

Proceedings of 40th International Conference on High Energy Physics — PoS(ICHEP2020)

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Within the impulse approximation, the modeling of the energy of final state leptons in electron and neutrino quasielastic and pion production processes on nuclear targets in the region of the Δ resonance depends on several parameters. These parameters include the removal energy of the initial state nucleon from the nucleus , , the potentials of electrons, nucleons and pions in the Coulomb field of the nucleus | |, and the kinetic energy dependent nuclear potential for final state nucleons () and for "nucleon plus pion" final states in the region of the Δ resonance which we refer to as Δ . We extract these parameters from electron scattering data. The average removal energies , are extracted from spectral functions measured in experiments. | | is extracted from comparisons of electron and positron scattering, and and Δ are extracted from the peak positions in the energy of final state electrons in QE scattering and pion production in the region of the Δ(1232) resonance . Previous studies have shown that real part of the optical potential for a nucleon bound in 12 6 * Speaker

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“…The solid blue lines in Figs. 3, 4, and 5 are the average nuclear optical potential for final state nucleons U Q E opt calculated by Jose Manuel Udias [51] using the formalism of Cooper, Hama, Clark and Mercer published in 1993 [49], and the dashed blue lines are calculated using the later formalism of Cooper, Hama and Clark published in 2009 [50].…”

Section: Comparison Of the Values Of U Q E Opt To Calculationsmentioning

confidence: 99%

“…calculated by and Jose Manuel Udias[51] and Artur. M. Ankowski[52] using the theoretical formalisms ofCooper 1993 [49] andCooper 2009 [50].…”

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confidence: 99%

Comparison of optical potential for nucleons and $$\varDelta $$ resonances

Bodek

Cai

2020

Eur. Phys. J. C

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Precise modeling of neutrino interactions on nuclear targets is essential for neutrino oscillations experiments. The modeling of the energy of final state particles in quasielastic (QE) scattering and resonance production on bound nucleons requires knowledge of both the removal energy of the initial state bound nucleon as well as the average Coulomb and nuclear optical potentials for final state leptons and hadrons. We extract the average values of the real part of the nuclear optical potential for final state nucleons ($$U_{opt}^{QE}$$ U opt QE ) as a function of the nucleon kinetic energy from inclusive electron scattering data on nuclear targets ($$_\mathbf{6 }^\mathbf{12 }{} \mathbf{C} $$ 6 12 C +$$_\mathbf{8 }^\mathbf{16 }{} \mathbf{O} $$ 8 16 O , $$_\mathbf{20 }^\mathbf{40 }{} \mathbf{Ca} $$ 20 40 Ca +$$_\mathbf{18 }^\mathbf{40 }{} \mathbf{Ar} $$ 18 40 Ar , $$_\mathbf{3 }^\mathbf{6 }{} \mathbf{Li} $$ 3 6 Li , $$_\mathbf{18 }^\mathbf{27 }{} \mathbf{Al} $$ 18 27 Al , $$_\mathbf{26 }^\mathbf{56 }{} \mathbf{Fe} $$ 26 56 Fe , $$_\mathbf{82 }^\mathbf{208 }{} \mathbf{Pb} $$ 82 208 Pb ) in the QE region and compare to calculations. We also extract values of the average of the real part of the nuclear optical potential for a $$\varDelta (1232)$$ Δ ( 1232 ) resonance in the final state ($$U^\varDelta _{opt}$$ U opt Δ ) within the impulse approximation. We find that $$U^\varDelta _{opt}$$ U opt Δ is more negative than $$U_{opt}^{QE}$$ U opt QE with $$U^\varDelta _{opt}\approx $$ U opt Δ ≈ 1.5 $$U_{opt}^{QE}$$ U opt QE for $$_\mathbf{6 }^\mathbf{12 }{} \mathbf{C} $$ 6 12 C .

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Global relativistic folding optical potential and the relativistic Green's function model

Cited by 17 publications

References 109 publications

Constraints in modeling the quasielastic response in inclusive lepton-nucleus scattering

Constraints in modeling the quasielastic response in inclusive lepton-nucleus scattering

Nuclear Potential of Final State Nucleons and Nucleons Plus Single Pions in Lepton Nucleus Scattering

Comparison of optical potential for nucleons and $$\varDelta $$ resonances

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