Electromagnetic form factors of the nucleon: New fit and analysis of uncertainties

W. M. Alberico, S. M. Bilenky, C. Giunti, and K. M. Graczyk
Phys. Rev. C 79, 065204 – Published 23 June 2009

Abstract

Electromagnetic form factors of proton and neutron, obtained from a new fit of data, are presented. The proton form factors are obtained from a simultaneous fit to the ratio μpGEp/GMp determined from polarization transfer measurements and to ep elastic cross section data. Phenomenological two-photon exchange corrections are taken into account. The present fit for protons was performed in the kinematical region Q2(0,6) GeV2. For both protons and neutrons we use the latest available data. For all form factors, the uncertainties and correlations of form factor parameters are investigated with the χ2 method.

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  • Received 18 December 2008

DOI:https://doi.org/10.1103/PhysRevC.79.065204

©2009 American Physical Society

Authors & Affiliations

W. M. Alberico1, S. M. Bilenky2,3, C. Giunti1, and K. M. Graczyk1,4,*

  • 1Dipartimento di Fisica Teorica, Università di Torino and INFN, Sezione di Torino, I-10125 Torino, Italy
  • 2BLTP, JINR, RU-141980 Dubna, Russia
  • 3Physics-Department E15, Technische Universität München, D-85748 Garching, Germany
  • 4Institute of Theoretical Physics, University of Wrocław, pl. M. Borna 9, PL-50204 Wrocław, Poland

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Issue

Vol. 79, Iss. 6 — June 2009

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