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Recoil polarization measurements of the proton electromagnetic form factor ratio to Q2=8.5GeV2

  • A. J.R. Puckett
  • , E. J. Brash
  • , M. K. Jones
  • , W. Luo
  • , M. Meziane
  • , L. Pentchev
  • , C. F. Perdrisat
  • , V. Punjabi
  • , F. R. Wesselmann
  • , A. Ahmidouch
  • , I. Albayrak
  • , K. A. Aniol
  • , J. Arrington
  • , A. Asaturyan
  • , H. Baghdasaryan
  • , F. Benmokhtar
  • , W. Bertozzi
  • , L. Bimbot
  • , P. Bosted
  • , W. Boeglin
  • C. Butuceanu, P. Carter, S. Chernenko, E. Christy, M. Commisso, J. C. Cornejo, S. Covrig, S. Danagoulian, A. Daniel, A. Davidenko, D. Day, S. Dhamija, D. Dutta, R. Ent, S. Frullani, H. Fenker, E. Frlez, F. Garibaldi, D. Gaskell, S. Gilad, R. Gilman, Y. Goncharenko, K. Hafidi, D. Hamilton, D. W. Higinbotham, W. Hinton, T. Horn, B. Hu, J. Huang, G. M. Huber, E. Jensen, C. Keppel, M. Khandaker, P. King, D. Kirillov, M. Kohl, V. Kravtsov, G. Kumbartzki, Y. Li, V. Mamyan, D. J. Margaziotis, A. Marsh, Y. Matulenko, J. Maxwell, G. Mbianda, D. Meekins, Y. Melnik, J. Miller, A. Mkrtchyan, H. Mkrtchyan, B. Moffit, O. Moreno, J. Mulholland, A. Narayan, S. Nedev, Nuruzzaman, E. Piasetzky, W. Pierce, N. M. Piskunov, Y. Prok, R. D. Ransome, D. S. Razin, P. Reimer, J. Reinhold, O. Rondon, M. Shabestari, A. Shahinyan, K. Shestermanov, S. Širca, I. Sitnik, L. Smykov, G. Smith, L. Solovyev, P. Solvignon, R. Subedi, E. Tomasi-Gustafsson, A. Vasiliev, M. Veilleux, B. B. Wojtsekhowski, S. Wood, Z. Ye, Y. Zanevsky, X. Zhang, Y. Zhang, X. Zheng, L. Zhu
  • Massachusetts Institute of Technology
  • Christopher Newport University
  • Thomas Jefferson National Accelerator Facility
  • Lanzhou University
  • College of William and Mary
  • Norfolk State University
  • North Carolina A&T State University
  • Hampton University
  • California State University Los Angeles
  • Argonne National Laboratory
  • A. Alikhanian Yerevan Institute of Physics
  • University of Virginia
  • Carnegie Mellon University
  • Centre de Calcul de l’Institut National de Physique Nucléaire et de Physique des Particules (IN2P3)
  • Florida International University
  • University of Regina
  • Joint Institute for Nuclear Research
  • Ohio University
  • Institute for High Energy Physics
  • Mississippi State University
  • National Institute for Nuclear Physics
  • Rutgers - The State University of New Jersey, New Brunswick
  • University of Glasgow
  • University of the Witwatersrand
  • University of Maryland, College Park
  • University of Chemical Technology and Metallurgy Sofia
  • University of Ljubljana
  • Service de Physique Nucléaire Boite Postale 12

Research output: Contribution to journalArticlepeer-review

286 Scopus citations

Abstract

Among the most fundamental observables of nucleon structure, electromagnetic form factors are a crucial benchmark for modern calculations describing the strong interaction dynamics of the nucleon's quark constituents; indeed, recent proton data have attracted intense theoretical interest. In this Letter, we report new measurements of the proton electromagnetic form factor ratio using the recoil polarization method, at momentum transfers Q2=5.2, 6.7, and 8.5GeV2. By extending the range of Q2 for which GEp is accurately determined by more than 50%, these measurements will provide significant constraints on models of nucleon structure in the nonperturbative regime.

Original languageEnglish
Article number242301
JournalPhysical Review Letters
Volume104
Issue number24
DOIs
StatePublished - 18 Jun 2010

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