Phys. Rev. Lett. 76, 885 - 887 (1996)Observation of Isovector-Isoscalar Two-Body Currents in Deuteron Knockout from 3He |
PRL Celebrates 50 Years
This Week's Milestone Letters are from 1981: |
C. Tripp1, G. S. Adams1, D. Beck2, K. Dow3, J. M. Finn4, V. Frolov1, O. Hansen3, T. Kobayashi1, J. McIntyre4, R. Lourie5, M. Nozar1, S. Nagorny6, J. Shaw1, P. Stoler1, T. Tamae7, D. Tieger3, W. Turchinetz3, G. Warren3, T. P. Welch3, E. J. Winhold1, M. Witkowski1, and B. Wojtsekhowski1,8
1Physics Department, Rensselaer Polytechnic Institute, Troy, New York 12180
2Physics Department, University of Illinois, Champaign, Illinois 61801
3MIT-Bates Linear Accelerator Center, Middleton, Massachusetts 01949
4Physics Department, College of William and Mary, Williamsburg, Virginia 23187-8795
5Institute of Nuclear and Particle Physics and Department of Physics, University of Virginia, Charlottesville, Virginia 22901
6Kharkov Institute of Physics and Technology, 310108 Kharkov, Ukraine
7Laboratory of Nuclear Science, Faculty of Science, Tohoku University, Mikamine, Taihaku-ku, Sendai, Japan
8Budker Nuclear Physics Institute, RU-630090 Novosibirsk, Russia
Received 11 September 1995
The reaction 3He(e,e′d)p was measured at four-momentum transfer q = 420 MeV, for proton recoil momentum Pr = 22, 54, and 62 MeV/c, in parallel deuteron kinematics. Longitudinal (L) and transverse (T) response functions were obtained by means of Rosenbluth separations. The separated response functions are, respectively, found to be dominated by the contributions of isoscalar and isovector two-body currents. The L/T ratios are about 3.5. This is an order of magnitude lower than that for elastic scattering on a free deuteron, or what would be expected for a purely isoscalar transition, but approximately agrees with what is theoretically expected for isoscalar plus isovector contributions.
©1996 The American Physical Society
URL: http://link.aps.org/abstract/PRL/v76/p885
DOI: 10.1103/PhysRevLett.76.885
PACS: 25.30.Fj, 21.30.-x, 21.45.+v, 25.10.+s
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