Abstract
The first measurement of exclusive photodisintegration of 3He with polarized photons is reported. Cross sections and asymmetries for 3He(γ,pn)p and 3He(γ,pp)n at 235≤Eγ≤305 MeV, and fixed proton emission angle θP1=100°, are compared to a theoretical calculation which includes one‐, two‐, and three‐nucleon photon absorption. Two‐nucleon absorption dominates the pn data, but is suppressed in the pp data. Both the pn and pp data require the inclusion of three‐nucleon absorption to describe the cross section and beam asymmetry over all momenta.
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