THRESHOLD ESTIMATES OF (PI, 2 PI) ON NUCLEI IN THE FERMI GAS MODEL: ONE BODY MECHANISM
19838 pages
Published in:
- Phys.Rev.C 27 (1983) 2150-2157
Citations per year
Abstract: (APS)
The one-nucleon contribution to threshold pion production in pion-nucleus collisions is calculated using a Fermi gas model of the nuclear excitation spectrum in order to carry out the sum over final nuclear states. For the one-body input a threshold approximant to the production amplitude from the phenomenological Lagrangian theory is used. The cross sections are found to have an η4 dependence near threshold, where η=(ωk−2mπ)mπ for total incident pion energy ωk. In a simple eikonal approach incident pion attenuation is found to lead to a reduction of threshold estimates by a factor of ∼ 10.
NUCLEAR REACTIONS B11(π−, 2π−), N14(π−, 2π−), O18(π−, 2π−), Al27(π+, 2π+), P31(π+, 2π+); threshold pion production cross section calculated in the Fermi gas model with phenomenological Lagrangian input.- PI- LIGHT NUCLEUS: NUCLEAR REACTION
- PI+ NUCLEUS: NUCLEAR REACTION
- PI-: HADROPRODUCTION
- HADROPRODUCTION: PI-
- PI+: HADROPRODUCTION
- HADROPRODUCTION: PI+
- PI: PAIR PRODUCTION
- PAIR PRODUCTION: PI
- BORON
- NITROGEN
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