Healey, D.
PI- P --> GAMMA N
[1.196]
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Radiative decay of the Delta resonance: Analyzing powers for pi- p (polarized) ---> gamma n

Stasko, J.C. ; Bassalleck, B. ; Booth, E.C. ; et al.
Phys.Rev.Lett. 72 (1994) 973-976, 1994.
Inspire Record 376202 DOI 10.17182/hepdata.19677

The polarized target asymmetry AN for π−p→→γn has been measured by coincident detection of the γ and the neutron at several angles across the Δ resonace energy region. A high-resolution NaI γ spectrometer together with good time-of-flight information for the neutron resulted in excellent separation of this radiative capture reaction from the much higher cross-section charge exchange reaction π−p→→π0n. Statistical uncertainties are ΔAN=0.02-0.04, representing a significant improvement over previous results. The new data are discussed in the context of recent theoretical models.

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