Published January 11, 1993 | Version v1
Journal article Metadata-only

High-energy pion-induced double charge exchange and isovector renormalization

Creators

  • 1. Institute for Nuclear Theory, University of Washington, Seattle, Washington 98105 (United States)
  • 2. Departamento Fisica Teorica and Instituto de Fisica Corpuscular, Centro Mixto, Universidad de Valencia, Consejo Superior de Investigaciones Cientificas, E-46100 Burjassot (Valencia) (Spain)
  • 3. Theoretical Divison, Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States)

Description

The (π+,π-) double-charge-exchange reaction for pion energies of 200 to 1400 MeV is calculated with a zero-parameter Glauber theory that includes spin flip and pion absorption. Differential cross sections and excitation functions are obtained for 14C and 18O targets. Results for Tπ=300--525 MeV are compared with recent experimental results and suggest a new quenching process. We have calculated effects of medium polarization on the isovector pion operator and find a strong reduction in good agreement with data. A pronounced dip in the cross section near Tπ=1300 MeV offers a unique testing ground for unconventional mechanisms

Additional details

Publishing Information

Journal Title
Physical Review Letters
Journal Volume
70
Journal Issue
2
Journal Page Range
p. 146-149.
ISSN
0031-9007
CODEN
PRLTAO

INIS

Country of Publication
United States
Country of Input or Organization
United States
INIS RN
24036950
Subject category
S73: NUCLEAR PHYSICS AND RADIATION PHYSICS; S73: NUCLEAR PHYSICS AND RADIATION PHYSICS;
Descriptors DEI
CARBON 14 TARGET; CHARGE EXCHANGE; DIFFERENTIAL CROSS SECTIONS; FORM FACTORS; GLAUBER THEORY; MEV RANGE 100-1000; OXYGEN 18 TARGET; PERTURBATION THEORY; PION PLUS REACTIONS; PION-NUCLEON INTERACTIONS; POLARIZATION; RENORMALIZATION; SHELL MODELS
Descriptors DEC
CROSS SECTIONS; ENERGY RANGE; HADRON REACTIONS; HADRON-HADRON INTERACTIONS; INTERACTIONS; MATHEMATICAL MODELS; MESON REACTIONS; MESON-BARYON INTERACTIONS; MESON-NUCLEON INTERACTIONS; MEV RANGE; NUCLEAR MODELS; NUCLEAR REACTIONS; PARTICLE INTERACTIONS; PARTICLE PROPERTIES; PION REACTIONS; TARGETS