1. Measurements of the elastic electromagnetic form factor ratioμpGEp/GMpvia polarization transfer
- Author
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B. D. Fox, K. Benslama, M. Liang, S. Glamazdin, Olivier Gayou, Seonho Choi, Nilanga Liyanage, S. Churchwell, E. J. Brash, Bogdan Wojtsekhowski, C. E. Jones, P. E. Ulmer, G. M. Urciuoli, Ronald Gilman, K. McCormick, M. Rvachev, Andrei Afanasev, Steffen Strauch, C. W. de Jager, R. A. Lindgren, J. J. LeRose, R. Suleiman, K. A. Aniol, V. Gorbenko, T. Chang, Charles Glashausser, S. Dumalski, R. Michaels, Dipanwita Dutta, J. Gomez, L. Morand, G. M. Huber, J. Gao, S. Becher, M. K. Jones, Pete Markowitz, A. J. Sarty, J. R. Calarco, D. Meekins, Haiyan Gao, M. B. Epstein, W. Xu, S. Frullani, V. A. Punjabi, R. I. Pomatsalyuk, M. Amarian, R. Roche, Olfred Hansen, Kevin Fissum, James J. Kelly, A. Saha, C. F. Perdrisat, Z. Chai, M. Kuss, F. Garibaldi, Jian-Ping Chen, E. Schulte, L. Bimbot, Ronald Ransome, Daniel Simon, L. Todor, K. Wijesooriya, E. R. Kinney, C. C. Chang, P. Bosted, Sonja Dieterich, G. Kumbartzki, X. Jiang, Edgar E. Kooijman, Z. E. Meziani, J. Hovdebo, R. J. Holt, D. J. Margaziotis, F. Xiong, E. Chudakov, D. Crovelli, S. Malov, and John C. Mitchell
- Subjects
Elastic scattering ,Physics ,Nuclear and High Energy Physics ,Transverse plane ,Proton ,Scattering ,Hadron ,Atomic physics ,Nuclear Experiment ,Polarization (waves) ,Nucleon ,Electron scattering - Abstract
We present measurements of the ratio of the proton elastic electromagnetic form factors, μ_pG_(Ep)/G_(Mp). The Jefferson Lab Hall A Focal Plane Polarimeter was used to determine the longitudinal and transverse components of the recoil proton polarization in ep elastic scattering; the ratio of these polarization components is proportional to the ratio of the two form factors. These data reproduce the observation of Jones et al. [Phys. Rev. Lett. 84, 1398 (2000)], that the form factor ratio decreases significantly from unity above Q^2=1 GeV^2.
- Published
- 2001
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