Publications
Publication Information
| Title | Final analysis of proton form factor ratio data at $\mathbf{Q^2 =}$ 4.0, 4.8, and 5.6 GeV$\mathbf{^2}$ |
| Authors | Andrew Puckett, Edward Brash, Olivier Gayou, Mark Jones, Lubomir Pentchev, Charles Perdrisat, Vina Punjabi, Konrad Aniol, Todd Averett, Fatiha Benmokhtar, William Bertozzi, Louis Bimbot, John Calarco, Christian Cavata, Zhengwei Chai, Ting-Hua Chang, Jian-Ping Chen, Eugene Chudakov, Raffaele De Leo, Sonja Dieterich, Rainer Endres, Martin Epstein, Stephanie Escoffier, Kevin Fissum, Salvatore Frullani, Juncai Gao, Franco Garibaldi, Shalev Gilad, Ronald Gilman, Oleksandr Glamazdin, Charles Glashausser, Javier Gomez, Jens-Ole Hansen, Douglas Higinbotham, Garth Huber, Mauro Iodice, Cornelis De Jager, Xiaodong Jiang, Mahbub Khandaker, Alexandre Kozlov, Kevin Kramer, Gerfried Kumbartzki, John LeRose, David Lhuillier, Richard Lindgren, Nilanga Liyanage, George Lolos, Demetrius Margaziotis, Frederic Marie, Pete Markowitz, Kathy McCormick, Robert Michaels, Brian Milbrath, Sirish Nanda, D. Neyret, Nikolay Piskunov, Ronald Ransome, Brian Raue, Julie Roche, Marat Rvachev, Arunava Saha, Carlos Salgado, Simon Sirca, Igor Sitnik, Steffen Strauch, Luminita Todor, E. Tomasi-Gustaffson, Guido Maria Urciuoli, Hakob Voskanyan, Krishni Wijesooriya, Bogdan Wojtsekhowski, Xiaochao Zheng, Lingyan Zhu, Helene Fonvieille |
| JLAB number | JLAB-PHY-11-1318 |
| LANL number | arXiv:1102.5737 |
| Other number | DOE/OR/23177-1477 |
| Document Type(s) | (Journal Article) |
| Associated with EIC: | No |
| Supported by Jefferson Lab LDRD Funding: | No |
|
Journal Compiled for Physical Review C Volume 85 Issue 04 Page(s) 045203 Refereed | |
| Publication Abstract: | Precise measurements of the proton electromagnetic form factor ratio R=mupGpE/GpM using the polarization transfer method at Jefferson Lab have revolutionized the understanding of nucleon structure by revealing the strong decrease of R with momentum transfer Q2 for Q2gte1 GeV2, in strong disagreement with previous extractions of R from cross section measurements. In particular, the polarization transfer results have exposed the limits of applicability of the one-photon-exchange approximation and highlighted the role of quark orbital angular momentum in the nucleon structure. The GEp-II experiment in Jefferson Lab's Hall A measured R at four Q2 values in the range 3.5 GeV2{lte}Q2{lte}5.6 GeV2. A possible discrepancy between the originally published GEp-II results and more recent measurements at higher Q2 motivated a new analysis of the GEp-II data. This article presents the final results of the GEp-II experiment, including details of the new analysis, an expanded description of the appa |
| Experiment Numbers: | E99-007, other |
| Group: | Hall B |
| Document: | |
| DOI: | http://dx.doi.org/10.1103/PhysRevC.85.045203 |
| Accepted Manuscript: | |
| Supporting Documents: | |
| Supporting Datasets: | |