Comparing proton momentum distributions in $A=2$ and 3 nuclei via $^2$H $^3$H and $^3$He $(e, e'p)$ measurements
Creators: name: Cruz-Torres, R.
name: Li, S.
name: Hauenstein, F.
name: Schmidt, A.
name: Nguyen, D.
name: Abrams, D.
name: Albataineh, H.
name: Alsalmi, S.
name: Androic, D.
name: Aniol, K.
name: Armstrong, W.
name: Arrington, J.
name: Atac, H.
name: Averett, T.
name: Gayoso, C. Ayerbe
name: Bai, X.
name: Bane, J.
name: Barcus, S.
name: Beck, A.
name: Bellini, V.
name: Bhatt, H.
name: Bhetuwal, D.
name: Biswas, D.
name: Blyth, D.
name: Boeglin, W.
name: Bulumulla, D.
name: Camsonne, A.
name: Castellanos, J.
name: Chen, J. -P.
name: Cohen, E. O.
name: Covrig, S.
name: Craycraft, K.
name: Dongwi, B.
name: Duer, M.
name: Duran, B.
name: Dutta, D.
name: Fuchey, E.
name: Gal, C.
name: Gautam, T. N.
name: Gilad, S.
name: Gnanvo, K.
name: Gogami, T.
name: Gomez, J.
name: Gu, C.
name: Habarakada, A.
name: Hague, T.
name: Hansen, O.
name: Hattawy, M.
name: Hen, O.
name: Higinbotham, D. W.
name: Hughes, E.
name: Hyde, C.
name: Ibrahim, H.
name: Jian, S.
name: Joosten, S.
name: Karki, A.
name: Karki, B.
name: Katramatou, A. T.
name: Keppel, C.
name: Khachatryan, M.
name: Khachatryan, V.
name: Khanal, A.
name: King, D.
name: King, P.
name: Korover, I.
name: Kutz, T.
name: Lashley-Colthirst, N.
name: Laskaris, G.
name: Li, W.
name: Liu, H.
name: Liyanage, N.
name: Lonardoni, D.
name: Machleidt, R.
name: Marcucci, L. E.
name: Markowitz, P.
name: McClellan, R. E.
name: Meekins, D.
name: Beck, S. Mey-Tal
name: Meziani, Z. -E.
name: Michaels, R.
name: Mihovilovic, M.
name: Nelyubin, V.
name: Nuruzzaman, N.
name: Nycz, M.
name: Obrecht, R.
name: Olson, M.
name: Ou, L.
name: Owen, V.
name: Pandey, B.
name: Pandey, V.
name: Papadopoulou, A.
name: Park, S.
name: Patsyuk, M.
name: Paul, S.
name: Petratos, G. G.
name: Piasetzky, E.
name: Pomatsalyuk, R.
name: Premathilake, S.
name: Puckett, A. J. R.
name: Punjabi, V.
name: Ransome, R.
name: Rashad, M. N. H.
name: Reimer, P. E.
name: Riordan, S.
name: Roche, J.
name: Sammarruca, F.
name: Santiesteban, N.
name: Sawatzky, B.
name: Segarra, E. P.
name: Schmookler, B.
name: Shahinyan, A.
name: Širch, S.
name: Sparveris, N.
name: Su, T.
name: Suleiman, R.
name: Szumila-Vance, H.
name: Tadepalli, A. S.
name: Tang, L.
name: Tireman, W.
name: Tortorici, F.
name: Urciuoli, G.
name: Viviani, M.
name: Weinstein, L. B.
name: Wojtsekhowski, B.
name: Wood, S.
name: Ye, Z. H.
name: Ye, Z. Y.
name: Zhang, J.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences
subject: FOS: Physical sciences

description: We report the first measurement of the $(e,e'p)$ reaction cross-section ratios for Helium-3 ($^3$He), Tritium ($^3$H), and Deuterium ($d$). The measurement covered a missing momentum range of $40 \le p_{miss} \le 550$ MeV$/c$, at large momentum transfer ($\langle Q^2 \rangle \approx 1.9$ (GeV$/c$)$^2$) and $x_B&gt;1$, which minimized contributions from non quasi-elastic (QE) reaction mechanisms. The data is compared with plane-wave impulse approximation (PWIA) calculations using realistic spectral functions and momentum distributions. The measured and PWIA-calculated cross-section ratios for $^3$He$/d$ and $^3$H$/d$ extend to just above the typical nucleon Fermi-momentum ($k_F \approx 250$ MeV$/c$) and differ from each other by $\sim 20\%$, while for $^3$He/$^3$H they agree within the measurement accuracy of about 3\%. At momenta above $k_F$, the measured $^3$He/$^3$H ratios differ from the calculation by $20\% - 50\%$. Final state interaction (FSI) calculations using the generalized Eikonal Approximation indicate that FSI should change the $^3$He/$^3$H cross-section ratio for this measurement by less than 5\%. If these calculations are correct, then the differences at large missing momenta between the $^3$He/$^3$H experimental and calculated ratios could be due to the underlying $NN$ interaction, and thus could provide new constraints on the previously loosely-constrained short-distance parts of the $NN$ interaction.
description: 8 pages, 3 figures (4 panels)