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28 March 2024
 
  » arxiv » 2001.7230

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Probing few-body nuclear dynamics via 3H and 3He (e,e'p)pn cross-section measurements
R. Cruz-Torres ; D. Nguyen ; F. Hauenstein ; A. Schmidt ; S. Li ; D. Abrams ; H. Albataineh ; S. Alsalmi ; D. Androic ; K. Aniol ; W. Armstrong ; J. Arrington ; H. Atac ; T. Averett ; C. Ayerbe Gayoso ; X. Bai ; J. Bane ; S. Barcus ; A. Beck ; V. Bellini ; F. Benmokhtar ; H. Bhatt ; D. Bhetuwal ; D. Biswas ; D. Blyth ; W. Boeglin ; D. Bulumulla ; A. Camsonne ; J. Castellanos ; J-P. Chen ; E. O. Cohen ; S. Covrig ; K. Craycraft ; B. Dongwi ; M. Duer ; B. Duran ; D. Dutta ; E. Fuchey ; C. Gal ; T. N. Gautam ; S. Gilad ; K. Gnanvo ; T. Gogami ; J. Golak ; J. Gomez ; C. Gu ; A. Habarakada T. Hague ; O. Hansen ; M. Hattawy ; O. Hen ; D. W. Higinbotham ; E. Hughes ; C. Hyde ; H. Ibrahim ; S. Jian ; S. Joosten ; H. Kamada ; A. Karki ; B. Karki ; A. T. Katramatou ; C. Keppel ; M. Khachatryan ; V. Khachatryan ; A. Khanal ; D. King ; P. King ; I. Korover ; T. Kutz ; N. Lashley-Colthirst ; G. Laskaris ; W. Li ; H. Liu ; N. Liyanage ; P. Markowitz ; R. E. McClellan ; D. Meekins ; S. Mey-Tal Beck Z-E. Meziani ; R. Michaels ; M. Mihovilovic ; V. Nelyubin ; N. Nuruzzaman ; M. Nycz ; R. Obrecht ; M. Olson ; L. Ou ; V. Owen ; B. Pandey ; V. Pandey ; A. Papadopoulou ; S. Park ; M. Patsyuk ; S. Paul ; G. G. Petratos ; E. Piasetzky ; R. Pomatsalyuk ; S. Premathilake ; A. J. R. Puckett ; V. Punjabi ; R. Ransome ; M. N. H. Rashad ; P. E. Reimer ; S. Riordan ; J. Roche ; M. Sargsian ; N. Santiesteban ; B. Sawatzky ; E. P. Segarra ; B. Schmookler ; A. Shahinyan ; S. Sirca ; R. Skibinski ; N. Sparveris ; T. Su ; R. Suleiman ; H. Szumila-Vance ; A. S. Tadepalli ; L. Tang ; W. Tireman ; K. Topolnicki ; F. Tortorici ; G. Urciuoli ; L.B. Weinstein ; H. Witala ; B. Wojtsekhowski ; S. Wood ; Z. H. Ye ; Z. Y. Ye ; J. Zhang ;
Date 20 Jan 2020
AbstractWe report the first measurement of the (e,e’p) three-body breakup reaction cross sections in Helium-3 ($^3$He) and Tritium ($^3$H) at large momentum transfer ($<Q^2> ~ 1.9$ (GeV/c)$^2$) and $x_B > 1$ kinematics, covering a missing momentum range of $40 leq p_{miss} leq 500$ MeV/c. The measured cross sections are compared with different plane-wave impulse approximation (PWIA) calculations, as well as a generalized Eikonal-Approximation-based calculation that includes the final-state interaction (FSI) of the struck nucleon. Overall good agreement is observed between data and Faddeev-formulation-based PWIA calculations for the full $p_{miss}$ range for $^3$H and for $150 leq p_{miss} leq 350$ MeV/c for $^3$He. This is a significant improvement over previous studies at lower $Q^2$ and $x_B sim 1$ kinematics where PWIA calculations differ from the data by up to 400%. For $p_{miss} geq 250$ MeV/c, the inclusion of FSI makes the calculation agree with the data to within about 10%. For both nuclei PWIA calculations that are based on off-shell electron-nucleon cross-sections and exact three-body spectral functions overestimate the cross-section by about 60% but well reproduce its $p_{miss}$ dependence. These data are a crucial benchmark for few-body nuclear theory and are an essential test of theoretical calculations used in the study of heavier nuclear systems.
Source arXiv, 2001.7230
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