Publications
Publication Information
| Title | Proton Form Factor Ratio, $ยต_p G_E^p/G_M^p$ from Double Spin Asymmetry |
| Authors | Anusha Habarakada Liyanage, Whitney Armstrong, Hoyoung Kang, James Maxwell, Jonathan Mulholland, Luwani Ndukum, Abdellah Ahmidouch, Ibrahim Albayrak, Arshak Asaturyan, Ozgur Ates, Hovhannes Baghdasaryan, Werner Boeglin, Peter Bosted, Edward Brash, Cornel Butuceanu, Maxim Bychkov, Philip Carter, Chunhua Chen, Jian-Ping Chen, Seonho Choi, Michael Christy, Silviu Covrig Dusa, Donald Crabb, Samuel Danagoulian, Aji Daniel, Andrey Davidenko, Brandon Davis, Donal Day, Wouter Deconinck, Alexandre Deur, James Dunne, Dipangkar Dutta, Lamiaa El Fassi, Mostafa Elaasar, Colleen Ellis, Rolf Ent, David Flay, Emil Frlez, David Gaskell, Octavian Geagla, John German, Ronald Gilman, Toshiyuki Gogami, Javier Gomez, Yury Goncharenko, Osamu Hashimoto, Douglas Higinbotham, Tanja Horn, Garth Huber, M. Jones, Mark Jones, Narbe Kalantarians, Hyekoo Kang, Daisuke Kawama, Cynthia Keppel, Mahbub Khandaker, Youngrok Kim, Paul King, Michael Kohl, Kang Kang Kovacs, Valery Kubarovsky, Ya Li, Nilanga Liyanage, Vahe Mamyan, Pete Markowitz, Tomofumi Maruta, Yuri Melnik, Zein-Eddine Meziani, Arthur Mkrtchyan, Hamlet Mkrtchyan, Vasiliy Mochalov, Peter Monaghan, Amrendra Narayan, Satoshi Nakamura, Nuruzzaman Nuruzzaman, Lubomir Pentchev, Dinko Pocanic, Matthew Posik, Andrew Puckett, Xiyu Qiu, Joerg Reinhold, Seamus Riordan, Julie Roche, Oscar Rondon Aramayo, Bradley Sawatzky, Mitra Hashemi Shabestari, Karl Slifer, Gregory Smith, L. Soloviev, Patricia Solvignon-Slifer, Vardan Tadevosyan, Liguang Tang, Alexander Vasiliev, Micah Veilleux, Tammy Walton, Frank Wesselmann, Stephen Wood, H. Yao, Z. Ye, L. Zhu |
| JLAB number | JLAB-PHY-20-3164 |
| LANL number | arXiv:1806.11156 |
| Other number | DOE/OR/23177-4944 |
| Document Type(s) | (Journal Article) |
| Associated with EIC: | No |
| Supported by Jefferson Lab LDRD Funding: | No |
| Funding Source: | Nuclear Physics (NP) |
|
Journal Compiled for Physical Review C Volume 101 Page(s) 035206 Refereed | |
| Publication Abstract: | The ratio of the electric and magnetic form factor of the proton, $\mu_p G_E^p/G_M^p$, has been measured for elastic electron-proton scattering with polarized beam and target up to four-momentum transfer squared, $Q^2=5.66$ (GeV/c)$^2$ using the double spin asymmetry for target spin orientation aligned nearly perpendicular to the beam momentum direction. This measurement of $\mu_p G_E^p/G_M^p$ agrees with the $Q^2$ dependence of previous recoil polarization data and reconfirms the discrepancy at high $Q^2$ between the Rosenbluth and the polarization-transfer method with a different measurement technique and systematic uncertainties uncorrelated to those of the recoil-polarization measurements. The form factor ratio at $Q^2$=2.06 (GeV/c)$^2$ has been measured as $\mu_p G_E^p/G_M^p = 0.720 \pm 0.176_{stat} \pm 0.039_{sys}$, which is in agreement with an earlier measurement with the polarized target technique at similar kinematics. The form factor ratio at $Q^2$=5.66 (GeV/c)$^2$ has been determined as $\mu_p G_E^p/G_M^p=0.244\pm0.353_{stat}\pm0.013_{sys}$, which represents the highest $Q^2$ reach with the double spin asymmetry with polarized target to date. |
| Experiment Numbers: | E07-003 |
| Group: | Hall C |
| Document: | |
| DOI: | https://doi.org/10.1103/PhysRevC.101.035206 |
| Accepted Manuscript: | 1806.11156.pdf |
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