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

Journal Article · Mon Jan 11 04:00:00 EST 1993 · Physical Review Letters; (United States)

DOI:https://doi.org/10.1103/PhysRevLett.70.146· OSTI ID:7119019

Oset, E ^[1]; Strottman, D ^[2]

---

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

The ([pi][sup +],[pi][sup [minus]]) 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 [sup 14]C and [sup 18]O targets. Results for [ital T][sub [pi]]=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 [ital T][sub [pi]]=1300 MeV offers a unique testing ground for unconventional mechanisms.

• OSTI ID: 7119019
• Journal Information: Physical Review Letters; (United States), Journal Name: Physical Review Letters; (United States) Vol. 70:2; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: English

Related Subjects

663460* -- Meson- & Hyperon-induced Reactions & Scattering-- (1992-)
663520 -- Nuclear Mass Ranges-- A=6-19-- (1992-)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
CARBON 14 TARGET
CHARGE EXCHANGE
CHARGED-PARTICLE REACTIONS
COUPLINGS
CROSS SECTIONS
DIFFERENTIAL CROSS SECTIONS
ENERGY RANGE
FORM FACTORS
GLAUBER THEORY
HADRON REACTIONS
HADRON-HADRON INTERACTIONS
INTERACTIONS
MATHEMATICAL MODELS
MESON REACTIONS
MESON-BARYON INTERACTIONS
MESON-NUCLEON INTERACTIONS
MEV RANGE
MEV RANGE 100-1000
NUCLEAR MODELS
NUCLEAR REACTIONS
OXYGEN 18 TARGET
PARTICLE INTERACTIONS
PARTICLE PROPERTIES
PERTURBATION THEORY
PION PLUS REACTIONS
PION REACTIONS
PION-NUCLEON INTERACTIONS
POLARIZATION
RENORMALIZATION
SHELL MODELS
TARGETS