Phys. Rev. C 62, 044001 (2000) [8 pages]Probing the ΔNN component of 3HeReceived 17 April 2000; published 13 September 2000 The 3He(γ,π±p) reactions were measured simultaneously over a tagged photon energy range of 800<~Eγ<~1120 MeV, well above the Δ resonance region. An analysis was performed to kinematically isolate Δ knockout events from conventional Δ photoproduction events, and a statistically significant excess of π+p events was identified, consistent with Δ++ knockout. Two methods were used to estimate the ΔNN probability in the 3He ground state corresponding to the observed knockout cross section. The first gave a lower probability limit of 1.5±0.6±0.5%; the second yielded an upper limit of about 2.6%. © 2000 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevC.62.044001
DOI:
10.1103/PhysRevC.62.044001
PACS:
27.10.+h, 14.20.Gk, 21.45.+v, 25.20.Lj
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