The E12-14-012 experiment, performed in Jefferson Lab Hall A, has measured the (e,e′p) cross section in parallel kinematics using a natural argon target. Here, we report the full results of the analysis of the data set corresponding to beam energy 2.222 GeV, and spanning the missing momentum and missing energy range 15≲pm≲300 MeV/c and 12≲Em≲80 MeV. The reduced cross section, determined as a function of pm and Em with ≈4\% accuracy, has been fitted using the results of Monte Carlo simulations involving a model spectral function and including the effects of final state interactions. The overall agreement between data and simulations turns out to be quite satisfactory (χ2/n.d.o.f.=1.9). The resulting spectral function will provide valuable new information, needed for the interpretation of neutrino interactions in liquid argon detectors.
@article{arxiv.2203.01748,
title = {Determination of the argon spectral function from (e,e'p) data},
author = {L. Jiang and A. M. Ankowski and D. Abrams and L. Gu and B. Aljawrneh and S. Alsalmi and J. Bane and A. Batz and S. Barcus and M. Barroso and V. Bellini and O. Benhar and J. Bericic and D. Biswas and A. Camsonne and J. Castellanos and J. -P. Chen and M. E. Christy and K. Craycraft and R. Cruz-Torres and H. Dai and D. Day and A. Dirican and S. -C. Dusa and E. Fuchey and T. Gautam and C. Giusti and J. Gomez and C. Gu and T. J. Hague and J. -O. Hansen and F. Hauenstein and D. W. Higinbotham and C. Hyde and Z. Jerzyk and C. Keppel and S. Li and R. Lindgren and H. Liu and C. Mariani and R. E. McClellan and D. Meekins and R. Michaels and M. Mihovilovic and M. Murphy and D. Nguyen and M. Nycz and L. Ou and B. Pandey and V. Pandey and K. Park and G. Perera and A. J. R. Puckett and S. N. Santiesteban and S. Širca and T. Su and L. Tang and Y. Tian and N. Ton and B. Wojtsekhowski and S. Wood and Z. Ye and J. Zhang},
journal= {arXiv preprint arXiv:2203.01748},
year = {2022}
}