Phys. Rev. Lett. 99, 092301 (2007) [5 pages]
Transverse Beam Spin Asymmetries in Forward-Angle Elastic Electron-Proton Scattering
Abstract
References (23)
Citing Articles
D. S. Armstrong, 1 J. Arvieux, 2 R. Asaturyan, 3 T. Averett, 1 S. L. Bailey, 1 G. Batigne, 4 D. H. Beck, 5 E. J. Beise, 6 J. Benesch, 7 L. Bimbot, 2 J. Birchall, 8 A. Biselli, 9 P. Bosted, 7 E. Boukobza, 2,7 H. Breuer, 6 R. Carlini, 7 R. Carr, 10 N. Chant, 6 Y.-C. Chao, 7 S. Chattopadhyay, 7 R. Clark, 9 S. Covrig, 10 A. Cowley, 6 D. Dale, 11 C. Davis, 12 W. Falk, 8 J. M. Finn, 1 T. Forest, 13 G. Franklin, 9 C. Furget, 4 D. Gaskell, 7 J. Grames, 7 K. A. Griffioen, 1 K. Grimm, 1,4 B. Guillon, 4 H. Guler, 2 L. Hannelius, 10 R. Hasty, 5 A. Hawthorne Allen, 14 T. Horn, 6 K. Johnston, 13 M. Jones, 7 P. Kammel, 5 R. Kazimi, 7 P. M. King, 6,5 A. Kolarkar, 11 E. Korkmaz, 15 W. Korsch, 11 S. Kox, 4 J. Kuhn, 9 J. Lachniet, 9 L. Lee, 8 J. Lenoble, 2 E. Liatard, 4 J. Liu, 6 B. Loupias, 2,7 A. Lung, 7 D. Marchand, 2 J. W. Martin, 10,16 K. W. McFarlane, 17 D. W. McKee, 18 R. D. McKeown, 10 F. Merchez, 4 H. Mkrtchyan, 3 B. Moffit, 1 M. Morlet, 2 I. Nakagawa, 11 K. Nakahara, 5 R. Neveling, 5 S. Ong, 2 S. Page, 8 V. Papavassiliou, 18 S. F. Pate, 18 S. K. Phillips, 1 M. L. Pitt, 14 M. Poelker, 7 T. A. Porcelli, 15,8 G. Quéméner, 4 B. Quinn, 9 W. D. Ramsay, 8 A. W. Rauf, 8 J.-S. Real, 4 J. Roche, 7,1 P. Roos, 6 G. A. Rutledge, 8 J. Secrest, 1 N. Simicevic, 13 G. R. Smith, 7 D. T. Spayde, 5,19 S. Stepanyan, 3 M. Stutzman, 7 V. Sulkosky, 1 V. Tadevosyan, 3 R. Tieulent, 4 J. Van de Wiele, 2 W. T. H. van Oers, 8 E. Voutier, 4 W. Vulcan, 7 G. Warren, 7 S. P. Wells, 13 S. E. Williamson, 5 S. A. Wood, 7 C. Yan, 7 J. Yun, 14 and V. Zeps11
(G0 Collaboration)
1Department of Physics, College of William and Mary, Williamsburg, Virginia 23187, USA
2Institut de Physique Nucléaire d'Orsay, CNRS/IN2P3, Université Paris Sud, Orsay, France
3Yerevan Physics Institute, Yerevan 375036 Armenia
4LPSC, Université Joseph Fourier Grenoble 1, CNRS/IN2P3, INPG, Grenoble, France
5Loomis Laboratory of Physics, University of Illinois, Urbana, Illinois 61801, USA
6Physics Department, University of Maryland, College Park, Maryland 20472, USA
7Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
8Department of Physics, University of Manitoba, Winnipeg, MB R3T 2N2 Canada
9Department of Physics, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, USA
10Kellogg Radiation Laboratory, California Institute of Technology, Pasadena, California 91125, USA
11Department of Physics and Astronomy, University of Kentucky, Lexington, Kentucky 40506, USA
12TRIUMF, Vancouver, BC V6T 2A3 Canada
13Department of Physics, Louisiana Tech University, Ruston, Louisiana 71272, USA
14Department of Physics, Virginia Tech, Blacksburg, Virginia 24061, USA
15Department of Physics, University of Northern British Columbia, Prince George, BC V2N 4Z9 Canada
16Department of Physics, University of Winnipeg, Winnipeg, MB R3B 2E9 Canada
17Department of Physics, Hampton University, Hampton, Virginia 23668, USA
18Physics Department, New Mexico State University, Las Cruces, New Mexico 88003, USA
19Department of Physics, Grinnell College, Grinnell, Iowa 50112, USA
Received 11 May 2007; published 29 August 2007
We have measured the beam-normal single-spin asymmetry in elastic scattering of transversely polarized 3 GeV electrons from unpolarized protons at Q2=0.15, 0.25 (GeV/c)2. The results are inconsistent with calculations solely using the elastic nucleon intermediate state and generally agree with calculations with significant inelastic hadronic intermediate state contributions. An provides a direct probe of the imaginary component of the 2 exchange amplitude, the complete description of which is important in the interpretation of data from precision electron-scattering experiments.
©2007 The American Physical Society
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