Radiative decay of the Δ resonance: Analyzing powers for π-p→→γn

J. C. Stako, B. Bassalleck, E. C. Booth, M. B. Chertok, D. Healey, R. Jacot-Guillarmod, M. A. Kovash, D. J. Mack, D. F. Measday, J. P. Miller, M. A. Moinester, D. Ottewell, M. A. Pickar, P. Weber

Research output: Contribution to journalArticlepeer-review

6 Scopus citations

Abstract

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.

Original languageEnglish
Pages (from-to)973-976
Number of pages4
JournalPhysical Review Letters
Volume72
Issue number7
DOIs
StatePublished - 1994

ASJC Scopus subject areas

  • Physics and Astronomy (all)

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