Analyzing powers for the {pi}{sup {minus}}{rvec p}{r_arrow}{pi}{sup 0}n reaction across the {Delta}(1232) resonance

Journal Article · Sun Aug 01 04:00:00 EDT 1999 · Physical Review, C

DOI:https://doi.org/10.1103/PhysRevC.60.024604· OSTI ID:357336

Gaulard, C V; Comfort, J R; Craig, K K; Six, E ^[1]; Riedel, C M; Amann, J F; Boudrie, R L; Morris, C L; Penttilae, S ^[2]; Beddo, M E; Burleson, G R; Zhao, Q ^[3]; Cole, P L ^[4]; Espy, M A ^[5]; Isenhower, L D; Knight, K R; Rigsby, D; Sadler, M E ^[6]; Kasprzyk, T E; Spinka, H M ^[7] ; Supek, I ^[8]; Wagner, G J ^[9]

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1. Arizona State University, Tempe, Arizona 85287 (United States)
2. Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States)
3. New Mexico State University, Las Cruces, New Mexico 88003 (United States)
4. George Washington University, Washington , D.C. 20052 (United States)
5. University of Minnesota, Minneapolis, Minnesota 55455 (United States)
6. Abilene Christian University, Abilene, Texas 79699 (United States)
7. Argonne National Laboratory, Argonne, Illinois 60439 (United States)
8. Rudjer Boskovic Institute, 41000 Zagreb (Croatia)
9. Universitaet Tuebingen, D-72076 Tuebingen (Germany)

High quality analyzing powers for the {pi}{sup {minus}}{rvec p}{r_arrow}{pi}{sup 0}n reaction have been obtained with a polarized proton target over a broad angular range at incident kinetic energies of 98.1, 138.8, 165.9, and 214.4 MeV. This experiment nearly doubled the existing {pi}N single-charge-exchange database for energies ranging from 10 to 230 MeV, with 36 new analyzing powers. The Neutral Meson Spectrometer was used to detect the outgoing neutral pions. The data are well described by recent phase-shift analyses. When combined with high-precision and accurate cross section data at the same energies, the data can provide a good test of the degree of isospin breaking in the region of the {Delta}(1232) resonance. They will also be helpful for constraining the evaluation of the pion-nucleon {sigma} term from the scattering amplitudes. {copyright} {ital 1999} {ital The American Physical Society}

• OSTI ID: 357336
• Journal Information: Physical Review, C, Journal Name: Physical Review, C Journal Issue: 2 Vol. 60; ISSN 0556-2813; ISSN PRVCAN
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
CROSS SECTIONS
DELTA BARYONS
DELTA-1232 BARYONS
ISOSPIN
NEUTRONS
PION-PROTON INTERACTIONS
PIONS MINUS
PIONS NEUTRAL
POLARIZATION