Measurement of nuclear transparency ratios for protons and neutrons
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1-s2.0-S0370269319304964-main.pdf
Description
Published version
Size
636.37 KB
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Checksum (MD5)
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Author(s)
CLAS Collaboration
Hen, Or
Cruz-Torres, R.
Laskaris, Georgios
Beck, S. May-Tal
Patsyuk, Maria
Schmookler, Barak Abraham
Segarra, E. P.
Date Issued
October 2019
Journal
Physics Letters B
Publisher
Elsevier BV
Citation
CLAS Collaboration (Duer, M. et al.) "Measurement of nuclear transparency ratios for protons and neutrons." Physics Letters B 797 (October 2019): 134792 ©2019 Author(s)
Version
Final published version
Abstract
This paper presents, for the first time, measurements of neutron transparency ratios for nuclei relative to C measured using the (e,e′n) reaction, spanning measured neutron momenta of 1.4 to 2.4 GeV/c. The transparency ratios were extracted in two kinematical regions, corresponding to knockout of mean-field nucleons and to the breakup of Short-Range Correlated nucleon pairs. The extracted neutron transparency ratios are consistent with each other for the two measured kinematical regions and agree with the proton transparencies extracted from new and previous (e,e′p) measurements, including those from neutron-rich nuclei such as lead. The data also agree with and confirm the Glauber approximation that is commonly used to interpret experimental data. The nuclear-mass-dependence of the extracted transparencies scales as Aα with α=−0.289±0.007, which is consistent with nuclear-surface dominance of the reactions.
MIT Department
Massachusetts Institute of Technology. Laboratory for Nuclear Science
Terms of Use
Creative Commons Attribution 4.0 International license
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1016/J.PHYSLETB.2019.07.039
