Transparency of [Formula Presented] for protons

L. Lapikás, G. van der Steenhoven, L. Frankfurt, Mark Strikman, M. Zhalov

Research output: Contribution to journalArticle

Abstract

Existing cross-section data for [Formula Presented]-shell knockout in the reaction [Formula Presented] —as obtained under different kinematic conditions—are shown to be mutually consistent, apart from a recent measurement performed in Mainz. New data have been collected at the Amsterdam Pulse Stretcher that confirm the normalization of the older measurements. An analysis of the world’s [Formula Presented] data has yielded precise values of the spectroscopic factor for [Formula Presented]-shell and [Formula Presented]-shell knockout from [Formula Presented] These values have been used to evaluate the transparency of the [Formula Presented] nucleus for [Formula Presented]-shell and [Formula Presented]-shell protons separately on the basis of recent high-energy [Formula Presented] data taken at a four-momentum transfer squared [Formula Presented] of 1.1 [Formula Presented] As the resulting average value of the nuclear transparency, [Formula Presented] is considerably higher than the value obtained from previous analyses and theoretical estimates, the high [Formula Presented] data were used instead for an independent determination of the spectroscopic strength for [Formula Presented] knockout. Combining these results with the low [Formula Presented] data the spectroscopic factors appear to be momentum-transfer dependent. Possible explanations of these surprising results in terms of reaction-mechanism effects or a possible breakdown of the quasiparticle concept at high [Formula Presented] are discussed as well.

Original languageEnglish (US)
Number of pages1
JournalPhysical Review C - Nuclear Physics
Volume61
Issue number6
DOIs
StatePublished - Jan 1 2000

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protons
momentum transfer
kinematics
breakdown
nuclei
cross sections
estimates
pulses

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics

Cite this

Lapikás, L. ; van der Steenhoven, G. ; Frankfurt, L. ; Strikman, Mark ; Zhalov, M. / Transparency of [Formula Presented] for protons. In: Physical Review C - Nuclear Physics. 2000 ; Vol. 61, No. 6.
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Transparency of [Formula Presented] for protons. / Lapikás, L.; van der Steenhoven, G.; Frankfurt, L.; Strikman, Mark; Zhalov, M.

In: Physical Review C - Nuclear Physics, Vol. 61, No. 6, 01.01.2000.

Research output: Contribution to journalArticle

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