Phys. Rev. Lett.
91,
122002
(2003)
[5 pages]
Measurements of GEn/GMn from the 2H(e⃗,e′n⃗)1H Reaction to Q2=1.45 (GeV/c)2
R. Madey et al. The Jefferson Laboratory E93-038 Collaboration
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R. Madey1,2, A. Yu. Semenov1, S. Taylor3, B. Plaster3, A. Aghalaryan4, E. Crouse5, G. MacLachlan6, S. Tajima7, W. Tireman1, Chenyu Yan1, A. Ahmidouch8, B. D. Anderson1, H. Arenhövel9, R. Asaturyan4, O. K. Baker10, A. R. Baldwin1, D. Barkhuff3,*, H. Breuer11, R. Carlini2, E. Christy10, S. Churchwell7,†, L. Cole10, S. Danagoulian2,8, D. Day12, T. Eden1,10,‡, M. Elaasar13, R. Ent2, M. Farkhondeh3, H. Fenker2, J. M. Finn5, L. Gan10, K. Garrow2, A. Gasparian8,10, P. Gueye10, C. R. Howell7, B. Hu10, M. K. Jones2, J. J. Kelly11, C. Keppel10, M. Khandaker14, W.-Y. Kim15, S. Kowalski3, A. Lai1, A. Lung2, D. Mack2, D. M. Manley1, P. Markowitz16, J. Mitchell2, H. Mkrtchyan4, A. K. Opper6, C. Perdrisat5, V. Punjabi14, B. Raue16, T. Reichelt17, J. Reinhold16, J. Roche5, Y. Sato10, N. Savvinov11, I. A. Semenova1, W. Seo15, N. Simicevic18, G. Smith2, S. Stepanyan4,15, V. Tadevosyan4, L. Tang10, P. E. Ulmer19, W. Vulcan2, J. W. Watson1, S. Wells18, F. Wesselmann12, S. Wood2, Chen Yan2, S. Yang15, L. Yuan10, W.-M. Zhang1, H. Zhu12, and X. Zhu10 (The Jefferson Laboratory E93-038 Collaboration)
1Kent State University, Kent, Ohio 44242, USA
2Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
3Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
4Yerevan Physics Institute, Yerevan 375036, Armenia
5The College of William and Mary, Williamsburg, Virginia 23187, USA
6Ohio University, Athens, Ohio 45701, USA
7Duke University and TUNL, Durham, North Carolina 27708, USA
8North Carolina A&T State University, Greensboro, North Carolina 27411, USA
9Johannes Gutenberg-Universität, D-55099 Mainz, Germany
10Hampton University, Hampton, Virginia 23668, USA
11University of Maryland, College Park, Maryland 20742, USA
12University of Virginia, Charlottesville, Virginia 22904, USA
13Southern University at New Orleans, New Orleans, Louisiana 70126, USA
14Norfolk State University, Norfolk, Virginia 23504, USA
15Kyungpook National University, Taegu 702-701, Korea
16Florida International University, Miami, Florida 33199, USA
17Rheinische Friedrich-Wilhelms-Universität, D-53115 Bonn, Germany
18Louisiana Tech University, Ruston, Louisiana 71272, USA
19Old Dominion University, Norfolk, Virginia 23529, USA
Received 27 June 2003; published 19 September 2003
We report new measurements of the ratio of the electric form factor to the magnetic form factor of the neutron, GEn/GMn, obtained via recoil polarimetry from the quasielastic 2H(e⃗,e′n⃗)1H reaction at Q2 values of 0.45, 1.13, and 1.45 (GeV/c)2 with relative statistical uncertainties of 7.6% and 8.4% at the two higher Q2 points, which points have never been achieved in polarization measurements.
© 2003 The American Physical Society
URL:
http://link.aps.org/doi/10.1103/PhysRevLett.91.122002
DOI:
10.1103/PhysRevLett.91.122002
PACS:
14.20.Dh, 13.40.Gp, 24.70.+s, 25.30.Bf
*Present Address: Renaissance Technologies, 600 Route 25A, East Setauket, New York 11733, USA. †Present Address: Department of Physics and Astronomy, University of Canterbury, Private Bag 4800, Christchurch 8020, New Zealand. ‡Present Address: Atmospheric Chemistry Division, National Center for Atmospheric Research, Boulder, Colorado 80307, USA.
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