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G Ep / G Mp Ratio by Polarization Transfer in ep→ep
Physical Review Letters (2000)
  • M. K. Jones, College of William and Mary
  • Enkeleida K. Lakuriqi, Georgia Southern University
  • K. A. Aniol
  • F. T. Baker, University of Georgia
  • J. Berthot
  • P. Y. Bertin
  • W. Bertozzi, Massachusetts Institute of Technology
  • A. Besson
  • L. Bimbot
  • W. U. Boeglin, Florida International University
  • E. J. Brash
  • D. Brown, University of Maryland
  • J. R. Calarco, University of New Hampshire
  • L. S. Cardman
  • C. C. Chang, University of Maryland
  • J. P. Chen
  • E. Chudakov
  • S. Churchwell
  • E. Cisbani
  • D. S. Dale, University of Kentucky
  • R. De Leo
  • A. Deur
  • B. Diederich, Old Dominion University
  • J. J. Domingo
  • M. B. Epstein
  • L. A. Ewell, University of Maryland
  • K. G. Fissum, Massachusetts Institute of Technology
  • A. Fleck
  • H. Fonvieille
  • S. Frullani
  • J. Gao, Massachusetts Institute of Technology
  • F. Garibaldi
  • A. Gasparian, Hampton University
  • G. Gerstner, College of William and Mary
  • S. Gilad, Massachusetts Institute of Technology
  • R. Gilman
  • A. Glamazdin
  • C. Glashausser
  • J. Gomez
  • V. Gorbenko
  • A. Green
  • J. O. Hansen
  • C. R. Howell
  • G. G. Kumbartzki
  • M. Kuss
  • G. Lavessiere
  • J. J. LeRose
  • M. Liang
  • R. A. Lindgren, University of Virginia
  • N. Liyanage, Massachusetts Institute of Technology
  • G. J. Lolos
  • R. Macri
  • R. Madey, Kent State University
  • S. Malov
  • D. J. Margaziotis
  • P. Markowitz, Florida International University
  • K. McCormick, Old Dominion University
  • J. I. McIntyre
  • R. L. J. van der Meer
  • R. Michaels
  • B. D. Milbrath, Eastern Kentucky University
  • J. Y. Mougey
  • S. K. Nanda
  • E. A. J. M. Offermann
  • Z. Papandreou
  • C. F. Perdrisat, College of William and Mary
  • G. G. Petratos, Kent State University
  • N. M. Piskunov
  • R. I. Pomatsalyuk
  • D. L. Prout, Kent State University
  • V. Punjabi, Norfolk State University
  • G. Quemener, College of William and Mary
  • R. D. Ransome
  • B. A. Raue, Florida International University
  • Y. Roblin
  • R. Roche, Florida State University
  • G. Rutledge, College of William and Mary
  • P. M. Rutt
  • A. Saha
  • T. Saito
  • A. J. Sarty, Florida State University
  • T. P. Smith, University of New Hampshire
  • P. Sorokin
  • S. Strauch
  • R. Suleiman, Kent State University
  • K. Takahashi
  • J. A. Templon, University of Georgia
  • L. Todor, Old Dominion University
  • P. E. Ulmer, Old Dominion University
  • G. M. Urciuoli
  • P. Vernin
  • B. Vlahovic, North Carolina Central University
  • H. Voskanyan
  • K. Wijesooriya, College of William and Mary
  • B. B. Wojtsekhowski
  • R. J. Woo
  • F. Xiong, Massachusetts Institute of Technology
  • G. D. Zainea
  • Z. L. Zhou, Massachusetts Institute of Technology
Abstract

The ratio of the proton's elastic electromagnetic form factors, G Ep / G Mp, was obtained by measuring Pt and Pl, the transverse and the longitudinal recoil proton polarization, respectively. For elastic ep→ep, G Ep / G Mp is proportional to Pt / Pl. Simultaneous measurement of Pt and Pl in a polarimeter provides good control of the systematic uncertainty. The results for the ratio G Ep / G Mp show a systematic decrease as Q2 increases from 0.5 to 3.5GeV2, indicating for the first time a definite difference in the spatial distribution of charge and magnetization currents in the proton.

Keywords
  • Polarization,
  • Elastic electromagnetic
Disciplines
Publication Date
February 14, 2000
Publisher Statement
© 2000 The American Physical Society. Permission granted for author or author’s employer to use APS published article without revision or modification on the author’s or employer’s website as long as a fee is not charged. Article obtained from Physical Review Letters.
Citation Information
M. K. Jones, Enkeleida K. Lakuriqi, K. A. Aniol, F. T. Baker, J. Berthot, P. Y. Bertin, W. Bertozzi, A. Besson, L. Bimbot, W. U. Boeglin, E. J. Brash, D. Brown, J. R. Calarco, L. S. Cardman, C. C. Chang, J. P. Chen, E. Chudakov, S. Churchwell, E. Cisbani, D. S. Dale, R. De Leo, A. Deur, B. Diederich, J. J. Domingo, M. B. Epstein, L. A. Ewell, K. G. Fissum, A. Fleck, H. Fonvieille, S. Frullani, J. Gao, F. Garibaldi, A. Gasparian, G. Gerstner, S. Gilad, R. Gilman, A. Glamazdin, C. Glashausser, J. Gomez, V. Gorbenko, A. Green, J. O. Hansen, C. R. Howell, G. G. Kumbartzki, M. Kuss, G. Lavessiere, J. J. LeRose, M. Liang, R. A. Lindgren, N. Liyanage, G. J. Lolos, R. Macri, R. Madey, S. Malov, D. J. Margaziotis, P. Markowitz, K. McCormick, J. I. McIntyre, R. L. J. van der Meer, R. Michaels, B. D. Milbrath, J. Y. Mougey, S. K. Nanda, E. A. J. M. Offermann, Z. Papandreou, C. F. Perdrisat, G. G. Petratos, N. M. Piskunov, R. I. Pomatsalyuk, D. L. Prout, V. Punjabi, G. Quemener, R. D. Ransome, B. A. Raue, Y. Roblin, R. Roche, G. Rutledge, P. M. Rutt, A. Saha, T. Saito, A. J. Sarty, T. P. Smith, P. Sorokin, S. Strauch, R. Suleiman, K. Takahashi, J. A. Templon, L. Todor, P. E. Ulmer, G. M. Urciuoli, P. Vernin, B. Vlahovic, H. Voskanyan, K. Wijesooriya, B. B. Wojtsekhowski, R. J. Woo, F. Xiong, G. D. Zainea, and Z. L. Zhou. "G Ep / G Mp Ratio by Polarization Transfer in ep→ep" Physical Review Letters 84.1398 (2000).
doi:10.1103/PhysRevLett.84.1398
Available at: http://works.bepress.com/enkeleida_lakuriqi/10