Final-state interactions in the nuclear response at large momentum transfer

Benhar, Omar

doi:10.1103/physrevc.87.024606

Cited by 37 publications

(46 citation statements)

References 36 publications

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“…employing the real part of an optical potential derived from the Dirac phenomenological fit of Ref [68] and the folding function of Refs. [24,70]. The main two consequences of including FSI are a shift of the the quasielastic peak and a redistribution of the strength towards lower values of ω.…”

Section: Resultsmentioning

confidence: 99%

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Electroweak pion production on nuclei within the extended factorization scheme

et al. 2019

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We have applied the extended factorization scheme to investigate the electroweak pion production on nuclei. The ANL-Osaka model, which was obtained by analyzing the data of πN , γN , N (e, e π) and N (ν, µ π) reactions up to invariant mass W = 2 GeV, is used to generate the matrix elements of current operators relevant to pion-production off the nucleon. Medium effects on the ∆ (1232) component of meson-exchange current are included by using a ∆-nucleus potential determined from the previous ∆-hole model studies of pion-nucleus reactions. Nuclear correlations in the initial target state and in the spectator system(s) are modeled using realistic hole spectral functions. As a first step, we show that the data of 12 C(e, e ) up to the ∆ (1232) region can be described reasonably well. The interplay between the pion production and two-body meson-exchange mechanisms is shown to be essential in improving the agreement with the data in the "dip" region, between the quasielastic and the ∆ (1232) peaks. Predictions for 12 C(ν, µ π) have also been made. They can be used to estimate pion-emission rates in neutrino-nucleus cross section, which constitutes an important systematic uncertainty to the reconstructed neutrino energy. With further improvements of the Metropolis Monte-Carlo techniques to account for final states comprised of more than two particles, our approach can be employed up to W = 2 GeV, where two-pion production and higher mass nucleon resonances must be included for analyzing the data from accelerator-based neutrinooscillation experiments.

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Section: Resultsmentioning

confidence: 99%

“…Full expressions for the nuclear transparency T p and for the finite width function F p (ω) can be found in [24,70]. The one-body CC operator is the sum of a vector and axial component…”

Section: A One-body Current Processesmentioning

confidence: 99%

Electroweak pion production on nuclei within the extended factorization scheme

et al. 2019

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“…Therefore, for |q| larger than ∼ 2π/d, d being the average interparticle distance in the target, nuclear scattering is expected to reduce to the incoherent sum of elementary processes, involving bound moving nucleons [28]. This is the premise underlying the impulse approximation (IA), providing the conceptual framework of all approaches discussed in this work.…”

Section: Theoretical Approachesmentioning

confidence: 99%

Estimate of the theoretical uncertainty of the cross sections for nucleon knockout in neutral-current neutrino-oxygen interactions

Ankowski¹,

Bárbaro²,

Benhar³

et al. 2015

Phys. Rev. C

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Free nucleons propagating in water are known to produce γ rays, which form a background to the searches for diffuse supernova neutrinos and sterile neutrinos carried out with Cherenkov detectors. As a consequence, the process of nucleon knockout induced by neutral-current quasielastic interactions of atmospheric (anti)neutrinos with oxygen needs to be under control at the quantitative level in the background simulations of the ongoing and future experiments. In this paper, we provide a quantitative assessment of the uncertainty associated with the theoretical description of the nuclear cross sections, estimating it from the discrepancies between the predictions of different models.

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“…In connecting the SRC information to inclusive electron-scattering data at Bjorken x B 1.2, there are complicating issues like the role of c.m. motion [21,24] and final-state interactions (FSIs) [25]. More quantitative information on SRC and their mass and isospin dependence, is expected to come from exclusive electroinduced two-nucleon knockout which is the real fingerprint of nuclear SRC [26].…”

Section: A(ee ) D(ee )mentioning

confidence: 99%

Factorization of exclusive electron-induced two-nucleon knockout

et al. 2014

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We investigate the factorization properties of the exclusive electroinduced two-nucleon knockout reaction A(e,e pN). A factorized expression for the cross section is derived and the conditions for factorization are studied. The A(e,e pN) cross section is shown to be proportional to the conditional center-of-mass (c.m.) momentum distribution for close-proximity pairs in a state with zero relative orbital momentum and zero radial quantum number. The width of this conditional c.m. momentum distribution is larger than the one corresponding with the full c.m. momentum distribution. It is shown that the final-state interactions (FSIs) only moderately affect the shape of the factorization function for the A(e,e pN) cross sections. Another prediction of the proposed factorization is that the mass dependence of the A(e,e pp) [A(e,e pn)] cross sections is much softer than[NZ].

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Final-state interactions in the nuclear response at large momentum transfer

Cited by 37 publications

References 36 publications

Electroweak pion production on nuclei within the extended factorization scheme

Electroweak pion production on nuclei within the extended factorization scheme

Estimate of the theoretical uncertainty of the cross sections for nucleon knockout in neutral-current neutrino-oxygen interactions

Factorization of exclusive electron-induced two-nucleon knockout

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