Quasielastic Electron Scattering and Pion Electroproduction from<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msup><mml:mrow><mml:mi mathvariant="normal">C</mml:mi></mml:mrow><mml:mrow><mml:mn>12</mml:mn></mml:mrow></mml:msup></mml:mrow></mml:math>

Stanfield, K.; Canizares, C. R.; Faissler, W.; Pipkin, F. M.

doi:10.1103/physrevc.3.1448

“…This background was therefore subtracted from the data up to transferred energies where the sum of both radiative and pair production corrections was below 40% of the measured cross section. At very low energy transfer, contributions to the cross section from elastic scattering off nucleus or inelastic transitions to bound or quasi-bound excited states are possible; however, in our three-momentum transfer range such contributions were completely negligible [23].…”

Section: Data Analysis and Radiative Correctionsmentioning

confidence: 70%

Quasi-elastic and inelastic inclusive electron scattering from an oxygen jet target

Anghinolfi

¹

,

Battaglieri

²

,

Bianchi

³

et al. 1996

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The results of an experiment on inclusive electron scattering from an oxygen jet target, performed in a wide range of energy and momentum transfer covering both quasi-elastic and ∆(1232) resonance regions, are reported. In the former region the theoretical predictions, obtained including effects of nucleon-nucleon correlations in both initial and final states, give a good description of the experimental data. In the inelastic region a broadening as well as a damping of the resonant part of the cross section with respect to the free nucleon case is observed. The need of more detailed calculations including nuclear structure effects on the electroproduction cross section of nucleon resonances is highlighted.

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“…The CLAS data were combined with the remaining world data on the structure function F 2 , along with the inclusive cross section data from Refs. [10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35] (see Fig. 1).…”

Section: Systematic Uncertaintiesmentioning

confidence: 99%

“…The points show the world data from Refs. [10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35]. The shaded area shows the CLAS data region.…”

Section: Introductionmentioning

confidence: 99%

Measurement of the Nucleon Structure Function F2 in the Nuclear Medium and Evaluation of its Moments

Osipenko,

Collaboration

2010

Preprint

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We report on the measurement of inclusive electron scattering off a carbon target performed with CLAS at Jefferson Laboratory. A combination of three different beam energies 1.161, 2.261 and 4.461 GeV allowed us to reach an invariant mass of the final-state hadronic system W ≈ 2.4 GeV with four-momentum transfers Q 2 ranging from 0.2 to 5 (GeV/c) 2 . These data, together with previous measurements of the inclusive electron scattering off proton and deuteron, which cover a similar continuous two-dimensional region of Q 2 and Bjorken variable x, permit the study of nuclear modifications of the nucleon structure. By using these, as well as other world data, we evaluated the F 2 structure function and its moments. Using an OPE-based twist expansion, we studied the Q 2 -evolution of the moments, obtaining a separation of the leading-twist and the total higher-twist terms. The carbon-to-deuteron ratio of the leading-twist contributions to the F 2 moments exhibits the well known EMC effect, compatible with that discovered previously in x-space. The total higher-twist term in the carbon nucleus appears, although with large systematic uncertainties, to be smaller with respect to the deuteron case for n < 7, suggesting partial parton deconfinement in nuclear matter. We speculate that the spatial extension of the nucleon is changed when it is immersed in the nuclear medium.

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“…11) of experimental uncertainties in our data and the data given in Refs. [10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35], and uncertainties in the evaluation procedure. The first type of uncertainties was accounted for in the moment evaluation point-by-point.…”

Section: Systematic Uncertaintiesmentioning

confidence: 99%

Measurement of the nucleon structure function in the nuclear medium and evaluation of its moments

Osipenko

¹

,

Ricco

²

,

Simula

³

et al. 2010

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We report on the measurement of inclusive electron scattering off a carbon target performed with CLAS at Jefferson Laboratory. A combination of three different beam energies 1.161, 2.261 and 4.461 GeV allowed us to reach an invariant mass of the final-state hadronic system W ≈ 2.4 GeV with four-momentum transfers Q 2 ranging from 0.2 to 5 (GeV/c) 2 . These data, together with previous measurements of the inclusive electron scattering off proton and deuteron, which cover a similar continuous two-dimensional region of Q 2 and Bjorken variable x, permit the study of nuclear modifications of the nucleon structure. By using these, as well as other world data, we evaluated the F 2 structure function and its moments. Using an OPE-based twist expansion, we studied the Q 2 -evolution of the moments, obtaining a separation of the leading-twist and the total higher-twist terms. The carbon-to-deuteron ratio of the leading-twist contributions to the F 2 moments exhibits the well known EMC effect, compatible with that discovered previously in x-space. The total higher-twist term in the carbon nucleus appears, although with large systematic uncertainties, to be smaller with respect to the deuteron case for n < 7, suggesting partial parton deconfinement in nuclear matter. We speculate that the spatial extension of the nucleon is changed when it is immersed in the nuclear medium.

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Quasielastic Electron Scattering and Pion Electroproduction fromC12

Cited by 16 publications

References 54 publications

Quasi-elastic and inelastic inclusive electron scattering from an oxygen jet target

Quasi-elastic and inelastic inclusive electron scattering from an oxygen jet target

Measurement of the Nucleon Structure Function F2 in the Nuclear Medium and Evaluation of its Moments

Measurement of the nucleon structure function in the nuclear medium and evaluation of its moments

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