Coherent Interactions
Ions are sources of fields
photons
Z2
Pomerons or mesons (mostly f0)
A 2 (bulk) A 4/3 (surface)
Fields couple coherently to ions
P? < h/RA, ~30 MeV/c for heavy ions
P|| < gh/RA ~ 3 GeV/c at RHIC
b > 2RA
Au
Au
Coupling ~ nuclear form factor
g, P, or meson
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