Flavor content of nucleon form factors in a VMD approach

Details Flavor content of nucleon form factors in a VMD approach Flavor content of nucleon form factors in a VMD approach

2006-07-26

arxiv.org/abs/nucl-th/0607058v1

Eur.Phys.J.A32:403-407,2007

Physics

Nuclear Physics

Nuclear Theory

5 pages, 6 figures, 1 table, invited talk at PAVI06, Milos, Greece, May 16-20, 2006

Scientific paper

10.1140/epja/i2006-10407-y

The strange form factors of the nucleon are studied in a two-component model consisting of a three-quark intrinsic structure surrounded by a meson cloud. A comparison with the available experimental world data from the SAMPLE, PVA4, HAPPEX and G0 collaborations shows a good overall agreement. It is shown that the strangeness contribution to the electric and magnetic form factors is of the order of a few percent. In particular, the strange quark contribution to the charge radius is small (0.005 fm**2) and to the magnetic moment it is positive (0.315 n.m.).

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