Coupled-channels approach to antiproton reactions

Thesis/Dissertation · Thu Jan 01 04:00:00 EST 1987

OSTI ID:5665269

Liu, G Q

Antiproton reactions are studied in a coupled-channels (CC) approach. In this approach, two-body baryon-antibaryon and meson-antimeson channels are treated by a set of coupled-channels Schroedinger equations. A description is given for the complete formulation of this approach, which includes derivation of the coupled-channels equations, procedures for calculating the S-matrix and experimentally measurable quantities such as differential cross sections, polarizations, and spin correlations. A CC formalism was developed for a system composed of channels pp, nn, {Lambda}{Lambda}, {pi}{sup +}{pi}{sup {minus}}, {pi}{sup 0}{pi}{sup 0}, K{sup +}K{sup {minus}}, and K{sup 0}K{sup 0}. The pp {yields} pp, nn processes are studied using the G-parity transformed Nijmegen Model-D NN potential. Calculations based on one-baryon-exchange mechanism for pp annihilations to {pi}{sup +}{pi}{sup {minus}} and K{sup +}K{sup {minus}} are compared with the available experimental measurements. Further development of this model is also discussed.

• Research Organization: Pittsburgh Univ., PA (USA)
• OSTI ID: 5665269
• Country of Publication: United States
• Language: English

Related Subjects

653003* -- Nuclear Theory-- Nuclear Reactions & Scattering
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ANNIHILATION
ANTIBARYONS
ANTIMATTER
ANTIMESONS
ANTINUCLEON REACTIONS
ANTIPARTICLES
ANTIPROTON REACTIONS
BARYON REACTIONS
BARYON-BARYON INTERACTIONS
BARYONS
BASIC INTERACTIONS
BOSONS
COMPARATIVE EVALUATIONS
COUPLED CHANNEL THEORY
CROSS SECTIONS
DATA
DIFFERENTIAL CROSS SECTIONS
DIFFERENTIAL EQUATIONS
ELECTROMAGNETIC INTERACTIONS
ELEMENTARY PARTICLES
EQUATIONS
FERMIONS
G PARITY
HADRON REACTIONS
HADRON-HADRON INTERACTIONS
HADRONS
INFORMATION
INTERACTIONS
KAONS
KAONS MINUS
KAONS PLUS
MANY-BODY PROBLEM
MATRICES
MESONS
NUCLEAR REACTIONS
NUCLEON REACTIONS
NUCLEON-ANTINUCLEON INTERACTIONS
NUCLEON-NUCLEON POTENTIAL
NUMERICAL DATA
PARTIAL DIFFERENTIAL EQUATIONS
PARTICLE INTERACTIONS
PARTICLE PROPERTIES
PIONS
PIONS MINUS
PIONS PLUS
POTENTIALS
PROTON-ANTIPROTON INTERACTIONS
PSEUDOSCALAR MESONS
S MATRIX
SCHROEDINGER EQUATION
STRANGE MESONS
STRANGE PARTICLES
THEORETICAL DATA
TWO-BODY PROBLEM
WAVE EQUATIONS