Phys. Rev. C
68,
064603
(2003)
[17 pages]
Quasielastic (e,e′p) reaction on 12C,56Fe, and 197Au
D. Dutta et al.
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D. Dutta15,10,*, D. van Westrum4,†, D. Abbott22, A. Ahmidouch7, Ts. A. Amatuoni25, C. Armstrong24,‡, J. Arrington2,§, K. A. Assamagan6,**, K. Bailey1, O. K. Baker22,6, S. Barrow18, K. Beard6, D. Beatty18,‡, S. Beedoe14, E. Beise11, E. Belz4, C. Bochna9, P. E. Bosted12, H. Breuer11, E. E. W. Bruins10, R. Carlini22, J. Cha6,††, N. Chant11, C. Cothran23, W. J. Cummings1, S. Danagoulian14, D. Day23, D. DeSchepper10, J.-E. Ducret21, F. Duncan11,‡‡, J. Dunne22,††, T. Eden6, R. Ent22, H. T. Fortune18, V. Frolov19,a, D. F. Geesaman1, H. Gao9,10,*, R. Gilman22,20, P. Guèye6, J. O. Hansen1,‡, W. Hinton6,‡, R. J. Holt9, C. Jackson14, H. E. Jackson1, C. Jones1, S. Kaufman1, J. J. Kelly11, C. Keppel22,6, M. Khandaker13, W. Kim8, E. Kinney4, A. Klein17, D. Koltenuk18,b, L. Kramer10,c, W. Lorenzon18,d, A. Lung2,‡, K. McFarlane13,e, D. J. Mack22, R. Madey6,7, P. Markowitz5, J. Martin10, A. Mateos10, D. Meekins22,‡, M. A. Miller9, R. Milner10, J. Mitchell22, R. Mohring11, H. Mkrtchyan25, A. M. Nathan9, G. Niculescu6,f, I. Niculescu6,g, T. G. O’Neill1, D. Potterveld1, J. W. Price19,h, J. Reinhold1,c, C. Salgado13, J. P. Schiffer1, R. E. Segel15, P. Stoler19, R. Suleiman7,i, V. Tadevosyan25, L. Tang22,6, B. Terburg9,j, T. P. Welch16, C. Williamson10, S. Wood22, C. Yan22, J.-C. Yang22, J. Yu18, B. Zeidman1, W. Zhao10, and B. Zihlmann23
1Argonne National Laboratory, Argonne, Illinois 60439, USA
2California Institute of Technology, Pasadena, California 91125, USA
3Chungnam National University, Taejon 305-764, Korea
4University of Colorado, Boulder, Colorado 80309, USA
5Florida International University, University Park, Florida 33199, USA
6Hampton University, Hampton, Virginia 23668, USA
7Kent State University, Kent, Ohio 44242, USA
8Kyungpook National University, Taegu, South Korea
9University of Illinois, Champaign-Urbana, Illinois 61801, USA
10Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
11University of Maryland, College Park, Maryland 20742, USA
12University of Massachusetts, Amherst, Massachusetts 01003, USA
13Norfolk State University, Norfolk, Virginia 23504, USA
14North Carolina A & T, Greensboro, North Carolina 27411, USA
15Northwestern University, Evanston, Illinois 60201, USA
16Oregon State University, Corvallis, Oregon 97331, USA
17Old Dominion University, Norfolk, Virginia 23529, USA
18University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA
19Rensselaer Polytechnic Institute, Troy, New York 12180, USA
20Rutgers University, New Brunswick, New Jersey 08903, USA
21CE Saclay, Gif-sur-Yvette, France
22Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
23University of Virginia, Charlottesville, Virginia 22901, USA
24William and Mary, Williamsburg, Virginia 23187, USA
25Yerevan Physics Institute, Yerevan, Armenia
Received 24 March 2003; published 9 December 2003
We report the results from a systematic study of the quasielastic (e,e′p) reaction on 12C, 56Fe, and 197Au performed at Jefferson Lab. We have measured nuclear transparency and extracted spectral functions (corrected for radiation) over a Q2 range of 0.64–3.25 (GeV∕c)2 for all three nuclei. In addition, we have extracted separated longitudinal and transverse spectral functions at Q2 of 0.64 and 1.8 (GeV∕c)2 for these three nuclei (except for 197Au at the higher Q2). The spectral functions are compared to a number of theoretical calculations. The measured spectral functions differ in detail but not in overall shape from most of the theoretical models. In all three targets the measured spectral functions show considerable excess transverse strength at Q2=0.64 (GeV∕c)2, which is much reduced at 1.8 (GeV∕c)2.
© 2003 The American Physical Society
URL:
http://link.aps.org/doi/10.1103/PhysRevC.68.064603
DOI:
10.1103/PhysRevC.68.064603
*Present address: Duke University, Durham, NC 27708. †Present address: Micro-g Solutions Inc., Erie, CO 80516. ‡Present address: TJNAF, Newport News, VA 23606. §Present address: Argonne Nat’l Lab, Argonne, IL 60439. **Present address: Brookhaven Nat’l Lab, Upton, NY 11973. ††Present address: Mississippi State University, Mississippi State, MS 39762. ‡‡Present address: Queens University, Kingston, Ontario, Canada. aPresent address: University of Minnesota, Minneapolis, MN 55439. bPresent address: Lincoln Labs, MIT, Lexington, MA 02420. cPresent address: Florida International University, Miami, FL 33199. dPresent address: University of Michigan, Ann Arbor, MI 48109. ePresent address: Hampton University, Hampton, VA 23668. fPresent address: University of Virginia, Charlottesville, VA 22901. gPresent address: James Madison University, Harrisonburg, VA 22807. hPresent address: University of California, Los Angeles, CA 90095. iPresent address: MIT, Cambridge, MA 02139. jPresent address: General Electric Corp., Cleveland, OH 44114.
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