Phys. Rev. Lett. 81, 4576 - 4579 (1998)
Measurements of Deuteron Photodisintegration up to 4.0 GeV
C. Bochna et al.
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C. Bochna1, B. P. Terburg1, D. J. Abbott2, A. Ahmidouch3, C. S. Armstrong4, J. Arrington5, K. A. Assamagan6, O. K. Baker2,6, S. P. Barrow7, D. P. Beatty7, D. H. Beck1, S. Y. Beedoe8, E. J. Beise9, J. E. Belz10, P. E. Bosted11, E. J. Brash12,18, H. Breuer9, R. V. Cadman1, L. Cardman2, R. D. Carlini2, J. Cha6, N. S. Chant9, G. Collins9, C. Cothran13, W. J. Cummings14, S. Danagoulian8, F. A. Duncan9, J. A. Dunne2, D. Dutta15, T. Eden6, R. Ent2, B. W. Filippone5, T. A. Forest1, H. T. Fortune7, V. V. Frolov16, H. Gao1,17, D. F. Geesaman14, R. Gilman18, P. L. J. Gueye6, K. K. Gustafsson9, J.-O. Hansen14, M. Harvey6, W. Hinton6, R. J. Holt1, H. E. Jackson14, C. E. Keppel6, M. A. Khandaker19, E. R. Kinney20, A. Klein21, D. M. Koltenuk7, G. Kumbartzki17, A. F. Lung9, D. J. Mack2, R. Madey3,6, P. Markowitz22, K. W. McFarlane19, R. D. McKeown5, D. G. Meekins4, Z.-E. Meziani23, M. A. Miller1, J. H. Mitchell2, H. G. Mkrtchyan24, R. M. Mohring9, J. Napolitano16, A. M. Nathan1, G. Niculescu6, I. Niculescu6, T. G. O'Neill14, B. R. Owen1, S. F. Pate25, D. H. Potterveld14, J. W. Price16, G. L. Rakness20, R. Ransome18, J. Reinhold14, P. M. Rutt18, C. W. Salgado19, G. Savage6, R. E. Segel15, N. Simicevic1, P. Stoler16, R. Suleiman3, L. Tang6, D. van Westrum20, W. F. Vulcan2, S. Williamson1, M. T. Witkowski16, S. A. Wood2, C. Yan2, and B. Zeidman14
1University of Illinois at Urbana-Champaign, Urbana, Illinois 61801
2Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606
3Kent State University, Kent, Ohio 44242
4College of William and Mary, Williamsburg, Virginia 23187
5California Institute of Technology, Pasadena, California 91125
6Hampton University, Hampton, Virginia 23668
7University of Pennsylvania, Philadelphia, Pennsylvania 19104
8North Carolina A&T State University, Greensboro, North Carolina 27411
9University of Maryland, College Park, Maryland 20742
10TRIUMF, Vancouver, British Columbia, Canada V6T 2A3
11American University, Washington, D.C. 20016
12University of Regina, Regina, Saskatchewan, Canada S4S 0A2
13University of Virginia, Charlottesville, Virginia 22901
14Argonne National Laboratory, Argonne, Illinois 60439
15Northwestern University, Evanston, Illinois 60201
16Rensselaer Polytechnic Institute, Troy, New York 12180
17Massachusetts Institute of Technology, Cambridge, Massachusetts 02139
18Rutgers University, New Brunswick, New Jersey 08903
19Norfolk State University, Norfolk, Virginia 23504
20University of Colorado, Boulder, Colorado 80309
21Old Dominion University, Norfolk, Virginia 23529
22Florida International University, University Park, Florida 33199
23Temple University, Philadelphia, Pennsylvania 19122
24Yerevan Physics Institute, Yerevan, Armenia
25New Mexico State University, Las Cruces, New Mexico 88003
Received 7 August 1998
The first measurements of the differential cross section for the d(γ,p)n reaction up to 4.0 GeV were performed at the Continuous Electron Beam Accelerator Facility (CEBAF) at Thomas Jefferson Laboratory. We report the cross sections at the proton center-of-mass angles of 36°, 52°, 69°, and 89°. These results are in reasonable agreement with previous measurements at lower energy. The 89° and 69° data show constituent-counting-rule behavior up to 4.0 GeV photon energy. The 52° and 36° data disagree with the counting-rule behavior. The quantum chromodynamics (QCD) model of nuclear reactions involving reduced amplitudes disagrees with the present data.
©1998 The American Physical Society
URL: http://link.aps.org/doi/10.1103/PhysRevLett.81.4576
DOI: 10.1103/PhysRevLett.81.4576
PACS: 25.20.-x, 13.75.Cs, 24.85.+p, 25.10.+s
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