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Lourie, R. W.; Baghaei, H.; Bertozzi, W.; Blomqvist, K. I.; Finn, J. M.; Hyde-Wright, C. E.; Kalantar‐Nayestanaki, N.; Nelson, J. A.; Kowalski, S.; Sargent, C. P.; Sapp, W. W.; Ulmer, P. E.; Wiggins, J.; Cottman, B. H.; Teng, P. K.; Winhold, E.J.; Yamazaki, M.; Calarco, J. R.; Hersman, F. W.; Kelly, J. J.; Schulze, Martin

doi:10.1103/physrevlett.56.2364

Cited by 66 publications

(37 citation statements)

References 11 publications

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“…See text for details. [25][26][27][28]43]. The regions marked with an asterisk indicate the two measurements of this paper.…”

Section: Discussionmentioning

confidence: 99%

“…The regions marked with an asterisk indicate the two measurements of this paper. [25][26][27][28]43]. The data-theory-ratio is given by the measured cross section integrated over the peak in missing energy, divided by the DWIA calculation.…”

Section: Discussionmentioning

confidence: 99%

“…Several experiments at Bates have measured the C(e,e ′ p) cross section as a function of missing energy for the following kinematical conditions: The maximum of the quasielastic peak at q = 400 MeV/c (an L/Tseparation), 585, 775, and 827 MeV/c [25,26]; the dip region at q = 400 MeV/c [27], and the delta peak at q = 400 and 475 MeV/c [28]. These measurements had four major results:…”

Section: Introductionmentioning

confidence: 99%

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Quasielastic12C(e,e′p)reaction at high momentum transfer

et al. 1999

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We measured the 12 C(e,e ′ p) cross section as a function of missing energy in parallel kinematics for (q, ω) = (970 MeV/c, 330 MeV) and (990 MeV/c, 475 MeV). At ω = 475 MeV, at the maximum of the quasielastic peak, there is a large continuum (Em > 50 MeV) cross section extending out to the deepest missing energy measured, amounting to almost 50% of the measured cross section. The ratio of data to DWIA calculation is 0.4 for both the p-and s-shells. At ω = 330 MeV, well below the maximum of the quasielastic peak, the continuum cross section is much smaller and the ratio of data to DWIA calculation is 0.85 for the p-shell and 1.0 for the s-shell. We infer that one or more mechanisms that increase with ω transform some of the single-nucleon-knockout into multinucleon knockout, decreasing the valence knockout cross section and increasing the continuum cross section.

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“…See text for details. [25][26][27][28]43]. The regions marked with an asterisk indicate the two measurements of this paper.…”

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Quasielastic12C(e,e′p)reaction at high momentum transfer

et al. 1999

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“…: i) the y-scaling analysis [2] of inclusive (e, e ′ ) experiments [3] has clarified the link between P (k, E) and the nucleon momentum distribution n(k); ii) the high-resolution A(e, e ′ p)X experiments have shown that the shell-model occupation numbers can be substantially less than one, which is a clear signature of the breakdown of the mean field picture [4]; iii) the exclusive A(e, e ′ p)X experiments on A = 3 and A = 4 nuclei, performed in kinematical regions corresponding to high excitation energies of the residual nuclear system, have given the first direct signature of the effects of NN correlations on P (k, E) [5,6]; iv) the recent data on the process 12 C(e, e ′ p)X have raised the question of multi-nucleon emissions generated by NN correlations [7,8]. The above experimental information clearly indicates that the single-particle strenght is not concentrated uniquely at low values of k and E (as it is the case within a mean field picture), but, due to short-range and tensor NN correlations, is spread over a wide range of nucleon momenta and removal energies.…”

Section: Introductionmentioning

confidence: 99%

Realistic model of the nucleon spectral function in few- and many-nucleon systems

1996

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By analysing the high momentum features of the nucleon momentum distribution in light and complex nuclei, it is argued that the basic two-nucleon configurations generating the structure of the nucleon Spectral Function at high values of the nucleon momentum and removal energy, can be properly described by a factorised ansatz for the nuclear wave function, which leads to a nucleon Spectral Function in the form of a convolution integral involving the momentum distributions describing the relative and center-of-mass motion of a correlated nucleon-nucleon pair embedded in the medium. The Spectral Functions of 3 He and infinite nuclear matter resulting from the convolution formula and from many-body calculations are compared, and a very good agreement in a wide range of values of nucleon momentum and removal energy is found. Applications of the model to the analysis of inclusive and exclusive processes are presented, illustrating those features of the cross section which are sensitive to that part of the Spectral Function which is governed by short-range and tensor nucleon-nucleon correlations.

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“…In addition, other processes beyond the simple one-body mechanism become important above the threshold of two-nucleon emission and in the socalled dip-region, i.e. in the region between the QF peak and the ∆-resonance excitation [8,9].…”

Section: Introductionmentioning

confidence: 99%

Multi-scattering effects in (e,e′p) knockout

et al. 1997

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Multistep direct scattering of the ejectile proton is considered in (e,e ′ p) reactions in the quasi-free region as an improvement over the usual treatment of final-state interactions by means of an optical potential. The theory is applied to 40 Ca(e,e ′ p) as a case example. Important contributions of two-and three-step processes are found at high missing energy and momentum in agreement with the experimental trend.

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ReactionC12(e,e′p)

Cited by 66 publications

References 11 publications

Quasielastic12C(e,e′p)reaction at high momentum transfer

Quasielastic12C(e,e′p)reaction at high momentum transfer

Realistic model of the nucleon spectral function in few- and many-nucleon systems

Multi-scattering effects in (e,e′p) knockout

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