FIZIKA B 13 (2004) 1, 287-294
JLAB PROTON POLARIZATION DATA IN RESPECT TO GLOBAL UNITARY AND ANALYTIC
MODEL OF NUCLEON ELECTROMAGNETIC STRUCTURE
S. DUBNIČKAa and A.-Z. DUBNIČKOVÁb
aInstitute of Physics, Slovak Academy of Science, Bratislava,
bComenius University, Department of Theoretical Physics, Bratislava, Slovak
Received 25 August 2003; Accepted 30 August 2004
Online 22 October 2004
It is demonstrated that the new JLab proton polarization data, which are in a rather
strong disagreement with the proton electric form factor data in the space-like region
obtained by the Rosenbluth technique, are consistent with all known form factor
properties, including also the QCD asymptotics. However, they require the existence of a
zero value (i.e. a diffraction minimum) of the proton electric form factor around t=15 GeV2.
That leads to a change of our understanding of the charge distribution inside the proton.
PACS numbers: 12.40.Vv, 13.40.Gp
Keywords: proton electric form factor, polarization data, Rosenbluth technique