Authors
IA Qattan, J Arrington, RE Segel, X Zheng, K Aniol, OK Baker, R Beams, EJ Brash, J Calarco, A Camsonne, J-P Chen, ME Christy, D Dutta, R Ent, S Frullani, D Gaskell, O Gayou, R Gilman, C Glashausser, K Hafidi, J-O Hansen, DW Higinbotham, W Hinton, RJ Holt, GM Huber, H Ibrahim, L Jisonna, MK Jones, CE Keppel, E Kinney, GJ Kumbartzki, A Lung, DJ Margaziotis, K McCormick, D Meekins, R Michaels, P Monaghan, P Moussiegt, L Pentchev, C Perdrisat, V Punjabi, R Ransome, J Reinhold, B Reitz, A Saha, A Sarty, EC Schulte, K Slifer, P Solvignon, V Sulkosky, K Wijesooriya, B Zeidman
Publication date
2005/4/15
Journal
Physical review letters
Volume
94
Issue
14
Pages
142301
Publisher
American Physical Society
Description
We report the results of a new Rosenbluth measurement of the proton electromagnetic form factors at values of 2.64, 3.20, and . Cross sections were determined by detecting the recoiling proton, in contrast to previous measurements which detected the scattered electron. Cross sections were determined to 3%, with relative uncertainties below 1%. The ratio was determined to 4%–8% and showed . These results are consistent with, and much more precise than, previous Rosenbluth extractions. They are inconsistent with recent polarization transfer measurements of similar precision, implying a systematic difference between the techniques.
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IA Qattan, J Arrington, RE Segel, X Zheng, K Aniol… - Physical review letters, 2005