Measurements of the elastic electromagnetic form factor ratio μpGEp/GMp via polarization transfer

Gayou, O.; Wijesooriya, K.; Afanasev, A.; Amarian, M.; Aniol, K.; Becher, S.; Benslama, K.; Bimbot, L.; Bosted, P.; Brash, E.; Calarco, J.; Chai, Z.; Chang, C. C.; Chang, T.; Chen, J. P.; Choi, S.; Chudakov, E.; Churchwell, S.; Crovelli, D.; Dieterich, S.; Dumalski, S.; Dutta, D.; Epstein, M.; Fissum, K.; Fox, B.; Frullani, S.; Gao, H.; Gao, J.; Garibaldi, F.; Gilman, R.; Glamazdin, S.; Glashausser, C.; Gomez, J.; Gorbenko, V.; Hansen, O.; Holt, R. J.; Hovdebo, J.; Huber, G. M.; de Jager, C. W.; Jiang, X.; Jones, C.; Jones, M. K.; Kelly, J.; Kinney, E.; Kooijman, E.; Kumbartzki, G.; Kuss, M.; LeRose, J.; Liang, M.; Lindgren, R.; Liyanage, N.; Malov, S.; Margaziotis, D. J.; Markowitz, P.; McCormick, K.; Meekins, D.; Meziani, Z. -E.; Michaels, R.; Mitchell, J.; Morand, L.; Perdrisat, C. F.; Pomatsalyuk, R.; Punjabi, V.; Ransome, R. D.; Roche, R.; Rvachev, M.; Saha, A.; Sarty, A.; Schulte, E. C.; Simon, D.; Strauch, S.; Suleiman, R.; Todor, L.; Ulmer, P. E.; Urciuoli, G. M.; Wojtsekhowski, B.; Xiong, F.; Xu, W.

doi:10.1103/PhysRevC.64.038202

Measurements of the elastic electromagnetic form factor ratio $μ_{p} G_{Ep} {/ G}_{Mp}$ via polarization transfer

Journal Article · Wed Aug 01 04:00:00 EDT 2001 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PhysRevC.64.038202· OSTI ID:839041

Gayou, O.; Wijesooriya, K.; Afanasev, A.; Amarian, M.; Aniol, K.; Becher, S.; Benslama, K.; Bimbot, L.; Bosted, P.; Brash, E.; Calarco, J.; Chai, Z.; Chang, C. C.; Chang, T.; Chen, J. P.; Choi, S.; Chudakov, E.; Churchwell, S.; Crovelli, D.; Dieterich, S. more »

We present measurements of the ratio of the proton elastic electromagnetic form factors, {mu}pGEp/GMp. 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 Q2 = 1 GeV2.

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Research Organization:: Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)

Sponsoring Organization:: USDOE Office of Energy Research (ER) (US)

DOE Contract Number:: AC05-84ER40150

OSTI ID:: 839041

Report Number(s):: JLAB-PHY-01-97; DOE/ER/40150-3301

Journal Information:: Physical Review. C, Nuclear Physics, Journal Name: Physical Review. C, Nuclear Physics Journal Issue: 3 Vol. 64; ISSN 0556-2813; ISSN PRVCAN

Publisher:: American Physical Society (APS)

Country of Publication:: United States

Language:: English

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