Contribution of the second kind of meson exchange current to pion-nucleus double-charge-exchange reactions /sup 18/O(. pi. /sup +/,. pi. /sup -/) /sup 18/N/sub e//sub (g. s)/ and /sup 14/C(. pi. /sup +/,. pi. /sup -/)/sup 14/O/sub g. s. /

Journal Article · Fri Jul 01 04:00:00 EDT 1988 · Phys. Rev. C; (United States)

DOI:https://doi.org/10.1103/PhysRevC.38.272· OSTI ID:7232123

Zi-qiang, Yu; Chong-hai, Cai; Wei-hsing, Ma; Shu-ping, Zhao

Based on the Lagrangian of Olsson and Turner, contributions of the second kind of meson exchange current to pion-nucleus double-charge-exchange reactions /sup 18/O(..pi../sup +/,..pi../sup -/)/sup 18/N/sub e//sub (g.s))/ and /sup 14/C(..pi../sup +/,..pi../sup -/)/sup 14/O/sub g.s./ have been evaluated. The calculated results show that the second kind of meson exchange current makes the forward theoretical cross section closer to the experimental data but the long-standing puzzling problem of the location of the minimum of the angular distribution at the energy of 164 MeV has not been solved.

• Research Organization: Department of Physics, Nankai University, Tianjin, China
• OSTI ID: 7232123
• Journal Information: Phys. Rev. C; (United States), Journal Name: Phys. Rev. C; (United States) Vol. 38:1; ISSN PRVCA
• Country of Publication: United States
• Language: English

Related Subjects

653003* -- Nuclear Theory-- Nuclear Reactions & Scattering
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ANGULAR DISTRIBUTION
BOSON-EXCHANGE MODELS
BOSONS
CARBON 14 TARGET
CHARGE-EXCHANGE REACTIONS
CHARGED-PARTICLE REACTIONS
CROSS SECTIONS
DISTRIBUTION
ELEMENTARY PARTICLES
ENERGY RANGE
FUNCTIONS
HADRON REACTIONS
HADRONS
LAGRANGIAN FUNCTION
MATHEMATICAL MODELS
MATRICES
MESON REACTIONS
MESONS
MEV RANGE
MEV RANGE 100-1000
NUCLEAR REACTIONS
OXYGEN 18 TARGET
PARTICLE MODELS
PERIPHERAL MODELS
PION PLUS REACTIONS
PION REACTIONS
PIONS
PIONS MINUS
PSEUDOSCALAR MESONS
S MATRIX
TARGETS