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

doi:10.1103/PhysRevLett.72.973

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

^*Corresponding author for this work

School of Physics and Astronomy

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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 language	English
Pages (from-to)	973-976
Number of pages	4
Journal	Physical Review Letters
Volume	72
Issue number	7
DOIs	https://doi.org/10.1103/PhysRevLett.72.973
State	Published - 1994

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Stako, J. C., Bassalleck, B., Booth, E. C., Chertok, M. B., Healey, D., Jacot-Guillarmod, R., Kovash, M. A., Mack, D. J., Measday, D. F., Miller, J. P., Moinester, M. A., Ottewell, D., Pickar, M. A., & Weber, P. (1994). Radiative decay of the Δ resonance: Analyzing powers for π-p→→γn. Physical Review Letters, 72(7), 973-976. https://doi.org/10.1103/PhysRevLett.72.973

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title = "Radiative decay of the Δ resonance: Analyzing powers for π-p→→γn",

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.",

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

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doi = "10.1103/PhysRevLett.72.973",

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AU - Stako, J. C.

AU - Bassalleck, B.

AU - Booth, E. C.

AU - Chertok, M. B.

AU - Healey, D.

AU - Jacot-Guillarmod, R.

AU - Kovash, M. A.

AU - Mack, D. J.

AU - Measday, D. F.

AU - Miller, J. P.

AU - Moinester, M. A.

AU - Ottewell, D.

AU - Pickar, M. A.

AU - Weber, P.

PY - 1994

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

Abstract

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