Physics Letters B
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.
© 2019 The Author
This is an open access article under the Creative Commons Attribution 4.0 International (CC BY 4.0) license. Funded by SCOAP3.
Original Publication Citation
Duer, M., Hen, O., Piasetzky, E., Weinstein, L. B., Schmidt, A., Korover, I., Cohen, E. O., Hakobyan, H., Adhikari, S., Angelini, G., Avakian, H., Gayoso, C. A., Barion, L., Battaglieri, M., Beck, A., Bedlinskiy, I., Biselli, A. S., Boiarinov, S., Briscoe, W. J., . . . Zheng, X. (2019). Measurement of nuclear transparency ratios for protons and neutrons. Physics Letters B, 797, 1-6, Article 134792. https://doi.org/10.1016/j.physletb.2019.07.039
0000-0001-5416-2900 (Weinstein), 0000-0002-1265-2212 (Hauenstein), 0000-0003-2243-6836 (Kuhn)
Duer, M.; Hen, O.; Piasetzky, E.; Weinstein, L. B.; Schmidt, A.; Korover, I.; Cohen, E. O.; Hakobyan, H.; Adhikari, S.; Angelini, G.; Avakian, H.; Ayerbe Gayoso, C.; Barion, L.; Battaglieri, M.; Beck, A.; Bedlinski, I.; Biselli, A. S.; Boiarinov, S.; Briscoe, W. J.; Zheng, X.; Et al.; and The CLAS Collaboration, "Measurement of Nuclear Transparency Ratios for Protons and Neutrons" (2019). Physics Faculty Publications. 820.