Hard nuclear processes and microscopic nuclear structure

Frankfurt, L.; Strikman, M.

doi:10.1016/0370-1573(88)90179-2

Cited by 714 publications

(1,000 citation statements)

References 242 publications

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“…Inclusive measurements observe only the scattered lepton with momentum k ′ µ = (E ′ , k ′ ) as indicated in Neglecting weak interactions which are relevant at very high energies only, the differential cross section is given by: 1 1) to leading order in the electromagnetic coupling constant α = e 2 /4π ≃ 1/137. Here…”

Section: Deep-inelastic Scattering: Kinematics and Structure Functionsmentioning

confidence: 99%

“…[116] (see also [1,117,118,119] and references therein). Consider the scattering from a free nucleon with momentum P µ = (M, 0) and invariant mass M in the laboratory frame.…”

Section: Deep-inelastic Scattering In Coordinate Spacementioning

confidence: 99%

“…For example, in elastic proton-nucleus scattering the proton mean free path is of the order of 5 − 10 fm [207], large compared to the average distance between nucleons in nuclei. This observation has motivated the impulse approximation which reduces the nuclear scattering process to incoherent scatterings from the individual nucleons (for reviews and references see [1,3,4,5,2,208]). Final state interactions of the scattered hadron with the residual nuclear system are neglected at high energy.…”

Section: Impulse Approximationmentioning

confidence: 99%

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Nuclear deep-inelastic lepton scattering and coherence phenomena

Piller¹,

Weise²

2000

Physics Reports

175

241

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This review outlines our present experimental knowledge and theoretical understanding of deepinelastic scattering on nuclear targets. The emphasis is primarily on nuclear coherence phenomena, such as shadowing, where the key physics issue is the exploration of hadronic and quark-gluon fluctuations of a high-energy virtual photon and their passage through the nuclear medium. New developments in polarized deep-inelastic scattering on nuclei are also discussed, and more conventional binding and Fermi motion effects are summarized. The report closes with a brief outlook on vector meson electroproduction, nuclear shadowing at very large Q 2 and the physics of high parton densities in QCD.

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Section: Deep-inelastic Scattering: Kinematics and Structure Functionsmentioning

confidence: 99%

“…[116] (see also [1,117,118,119] and references therein). Consider the scattering from a free nucleon with momentum P µ = (M, 0) and invariant mass M in the laboratory frame.…”

Section: Deep-inelastic Scattering In Coordinate Spacementioning

confidence: 99%

Section: Impulse Approximationmentioning

confidence: 99%

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Nuclear deep-inelastic lepton scattering and coherence phenomena

Piller¹,

Weise²

2000

Physics Reports

175

241

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“…Refs. [28][29][30][31][32]). This relation follows from the observation [28,29] that in the regime in which the chiral symmetry is restored the color singled 6-quark configuration can be expressed through the superposition of N N , ∆∆ and hidden-color components with relative normalizations fixed by the SU (3) symmetry.…”

Section: Introductionmentioning

confidence: 99%

Hard breakup of the deuteron into twoΔisobars

Granados

Sargsian

2011

Phys. Rev. C

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We study high energy photodisintegration of the deuteron into two ∆-isobars at large center of mass angles within the QCD hard rescattering model (HRM). According to the HRM, the process develops in three main steps: the photon knocks a quark from one of the nucleons in the deuteron; the struck quark rescatters off a quark from the other nucleon sharing the high energy of the photon; then the energetic quarks recombine into two outgoing baryons which have large transverse momenta. Within the HRM, the cross section is expressed through the amplitude of pn → ∆∆ scattering which we evaluated based on the quark-interchange model of hard hadronic scattering. Calculations show that the angular distribution and the strength of the photodisintegration is mainly determined by the properties of the pn → ∆∆ scattering. We predict that the cross section of the deuteron breakup to ∆ ++ ∆ − is 4-5 times larger than that of the breakup to the ∆ + ∆ 0 channel. Also, the angular distributions for these two channels are markedly different. These can be compared with the predictions based on the assumption that two hard ∆-isobars are the result of the disintegration of the preexisting ∆∆ components of the deuteron wave function. In this case, one expects the angular distributions and cross sections of the breakup in both ∆ ++ ∆ − and ∆ + ∆ 0 channels to be similar.

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“…It can be seen that: i at x 1:5 the nuclear response could be sensitive t o the medium-dependent modi cations of the nucleon structure function, due to the point-like-con guration suppression of Ref. 9 ; ii the kinematical regions corresponding to x 1:5 appear to be appropriate for investigating the effects of the possible presence of multiquark cluster con gurations at short NN separations; iii the QE contamination could be relevant at large values of x.…”

mentioning

confidence: 99%

Nucleon-Nucleon Correlations and Inclusive Electron Scattering off Few-Nucleon Systems at x > 1

Simula

1995

Few-Body Problems in Physics ’95

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Abstract. Inclusive electron scattering o few-nucleon systems is investigated at x 1 and high momentum transfer, including the contributions from quasielastic and deep inelastic scattering processes. It is shown that at x 1 the inclusive cross section is dominated by the process of virtual photon absorption on a pair of correlated nucleons both in case of quasi-elastic and deep inelastic scattering events. The sensitivity of the nuclear response to the e ects arising from the possible presence of multiquark cluster con gurations at short internucleon separations as well as from possible medium-dependent modi cations of the nucleon structure function, is illustrated.The aim of this contribution is to show that the investigation of inclusive electron scattering o few-nucleon systems at high values of Q 2 and x 1 where Q 2 is the squared four-momentum transfer and x = Q 2 =2M the Bjorken scaling variable could provide relevant information on the short-range properties of hadronic matter. According to the value of the invariant mass W produced by virtual photon absorption on a nucleon in the nucleus, the inclusive process A e; e 0 X is governed by the following two mechanisms: i the quasi-elastic QE process, for which W = M, and ii the deep inelastic scattering DIS corresponding to W M , where M is the nucleon mass. The basic quantities that could be extracted from the analysis of QE and DIS processes at x 1 are the nucleon momentum distribution in a nucleus and the valence quark distributions in a bound nucleon, respectively. H o wever, present experimental data do not reach su ciently high values of Q 2 , so that at large values of x 1:3 they are mainly due to QE scattering and not to DIS 1 . Neverthless, the analysis of existing data limited to Q 2 few GeV=c 2 shows that the kinematical regions corresponding to x 1:3 are strongly a ected by high momentum and high removal energy components of the nuclear wave function

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Hard nuclear processes and microscopic nuclear structure

Cited by 714 publications

References 242 publications

Nuclear deep-inelastic lepton scattering and coherence phenomena

Nuclear deep-inelastic lepton scattering and coherence phenomena

Hard breakup of the deuteron into twoΔisobars

Nucleon-Nucleon Correlations and Inclusive Electron Scattering off Few-Nucleon Systems at x > 1

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