Abstract
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%.
Original language | English |
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Article number | 044001 |
Pages (from-to) | 440011-440018 |
Number of pages | 8 |
Journal | Physical Review C - Nuclear Physics |
Volume | 62 |
Issue number | 4 |
Publication status | Published - 2000 Oct |
ASJC Scopus subject areas
- Nuclear and High Energy Physics