Correlated Strength in Nuclear Spectral Function
D. Rohe, C. S. Armstrong, R. Asaturyan, O. K. Baker, S. Bueltmann, C. Carasco, D. Day, R. Ent, H. C. Fenker, K. Garrow, A. Gasparian, P. Gueye, M. Hauger, A. Honegger, J. Jourdan, C. E. Keppel, G. Kubon, R. Lindgren, A. Lung, D. J. Mack, J. H. Mitchell, H. Mkrtchyan, D. Mocelj, K. Normand, T. Petitjean, O. Rondon, E. Segbefia, I. Sick, S. Stepanyan, L. Tang, F. Tiefenbacher, W. F. Vulcan, G. Warren, S. A. Wood, L. Yuan, M. Zeier, H. Zhu, B. Zihlmann
Abstract
We have carried out an (e,e'p) experiment at high momentum transfer and in parallel kinematics to measure the strength of the nuclear spectral function S(k,E) at high nucleon momenta k and large removal energies E. This strength is related to the presence of short-range and tensor correlations, and was known hitherto only indirectly and with considerable uncertainty from the lack of strength in the independent-particle region. This experiment confirms by direct measurement the correlated strength predicted by theory.
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