Parametrization of pion-nucleon phase shifts and effects upon pion-nucleus scattering calculations

Journal Article · Fri Nov 01 00:00:00 EST 1996 · Physical Review, C

DOI:https://doi.org/10.1103/PhysRevC.54.2499· OSTI ID:389436

Ebrahim, A A; Peterson, R J ^[1]

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1. Nuclear Physics Laboratory, University of Colorado, Boulder, Colorado 80309-0446 (United States)

Pi meson interactions with free nucleons as known from recent experiments have been fit by Arndt {ital et} {ital al}. in the form of phase shifts. In the present work these phase shifts are fit by a simple parametrization, and observables computed from the resulting parametrized phase shifts are compared successfully to important examples of recent measurements. The parameters of this work are readily suited to pion-nucleus optical model codes built upon the impulse approximation. Some examples of the effect of the new pion-nucleon data upon these pion-nucleus calculations are shown, relative to older results based upon far fewer pion-nucleon data. {copyright} {ital 1996 The American Physical Society.}

• OSTI ID: 389436
• Journal Information: Physical Review, C, Vol. 54, Issue 5; Other Information: PBD: Nov 1996
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
PION-NUCLEON INTERACTIONS
PHASE SHIFT
PARAMETRIC ANALYSIS
PION REACTIONS
IMPULSE APPROXIMATION
OPTICAL MODELS