Missing-energy dependence of the separated response functions for the C12(e,ep) reaction

P. E. Ulmer, H. Baghaei, W. Bertozzi, K. I. Blomqvist, J. M. Finn, C. E. Hyde-Wright, N. Kalantar-Nayestanaki, S. Kowalski, R. W. Lourie, J. Nelson, W. W. Sapp, C. P. Sargent, L. Weinstein, B. H. Cottman, P. K. Teng, E. J. Winhold, M. Yamazaki, J. R. Calarco, F. W. Hersman, J. J. Kelly, M. E. Schulze, and G. Audit
Phys. Rev. Lett. 59, 2259 – Published 16 November 1987
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Abstract

A longitudinal/transverse separation of the C12(e,ep) reaction in the quasielastic region has been performed in parallel kinematics. Above the two-particle emission threshold a broad bump is seen which has been attributed to knockout from the deeply bound s shell. The s-shell region shows a large transverse enhancement compared to distorted-wave impulse-approximation calculations based on free-proton form factors. This enhancement increases with missing energy, indicating that a nonquasielastic reaction mechanism plays a significant role. The p shell is consistent with the free-proton behavior.

  • Received 27 May 1987

DOI:https://doi.org/10.1103/PhysRevLett.59.2259

©1987 American Physical Society

Authors & Affiliations

P. E. Ulmer, H. Baghaei, W. Bertozzi, K. I. Blomqvist, J. M. Finn, C. E. Hyde-Wright, N. Kalantar-Nayestanaki, S. Kowalski, R. W. Lourie, J. Nelson, W. W. Sapp, C. P. Sargent, L. Weinstein, B. H. Cottman, P. K. Teng, E. J. Winhold, M. Yamazaki, J. R. Calarco, F. W. Hersman, J. J. Kelly, M. E. Schulze, and G. Audit

  • Department of Physics and Laboratory for Nuclear Science, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139
  • Department of Physics, Rensselaer Polytechnic Institute, Troy, New York 12181
  • Department of Physics, University of New Hampshire, Durham, New Hampshire 03824
  • Department of Physics and Astronomy, University of Maryland, College Park, Maryland 20742
  • Department of Physics, Syracuse University, Syracuse, New York 13210
  • Départment de Physique Nucléaire et de Hautes Energies, Centre d’Etudes Nucléaires de Saclay, 91191 Gif-sur-Yvette, France

Comments & Replies

Comment on "Missing-Energy Dependence of the Separated Response Functions for the Reaction C12(e,ep)"

G. van der Steenhoven, H. P. Blok, E. Jans, L. Lapikás, and P. K. A. de Witt Huberts
Phys. Rev. Lett. 61, 2000 (1988)

Ulmer et al. Reply

P. E. Ulmer, W. Bertozzi, J. M. Finn, and R. W. Lourie
Phys. Rev. Lett. 61, 2001 (1988)

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Vol. 59, Iss. 20 — 16 November 1987

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