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Title: Vector-meson contributions to the processes. gamma. gamma. r arrow. pi. sup 0. pi. sup 0 ,. pi. sup +. pi. sup minus , K sub L r arrow. pi. sup 0. gamma. gamma. , and K sup + r arrow. pi. sup +. gamma. gamma

Abstract

We implement standard chiral perturbation theory to {ital O}({ital p}{sup 4}) by adding vector mesons. We show that it leads to a good agreement of the prediction for {sigma}({gamma}{gamma}{r arrow}{pi}{sup 0}{pi}{sup 0}) with experiments and the vector mesons unitarize the chiral amplitude in an effective way. We also consider {ital K}{sub {ital L}}{r arrow}{pi}{sup 0}{gamma}{gamma}, including the effect of vector mesons, and obtain a very distinct spectrum for two photons. Also, their effects on {gamma}{gamma}{r arrow}{pi}{sup +}{pi}{sup {minus}} and {ital K}{sup +}{r arrow}{pi}{sup +}{gamma}{gamma} are briefly discussed.

Authors:
 [1]
  1. Enrico Fermi Institute Department of Physics, University of Chicago, Chicago, Illinois 60637 (USA)
Publication Date:
OSTI Identifier:
6916170
DOE Contract Number:  
AC02-80ER10587
Resource Type:
Journal Article
Journal Name:
Physical Review, D (Particles Fields); (USA)
Additional Journal Information:
Journal Volume: 41:5; Journal ID: ISSN 0556-2821
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; KAONS NEUTRAL LONG-LIVED; RADIATIVE DECAY; KAONS PLUS; PHOTON-PHOTON INTERACTIONS; PARTICLE PRODUCTION; PIONS MINUS; PIONS NEUTRAL; PIONS PLUS; ANNIHILATION; BRANCHING RATIO; CHIRAL SYMMETRY; COUPLING; CROSS SECTIONS; LAGRANGIAN FUNCTION; PERTURBATION THEORY; QUANTUM CHROMODYNAMICS; VECTOR MESONS; BASIC INTERACTIONS; BOSONS; ELECTROMAGNETIC INTERACTIONS; ELEMENTARY PARTICLES; FIELD THEORIES; FUNCTIONS; HADRONS; INTERACTIONS; KAONS; KAONS NEUTRAL; MESONS; PARTICLE INTERACTIONS; PIONS; PSEUDOSCALAR MESONS; QUANTUM FIELD THEORY; STRANGE MESONS; STRANGE PARTICLES; SYMMETRY; 645202* - High Energy Physics- Particle Interactions & Properties-Theoretical- Electromagnetic Interactions & Properties

Citation Formats

Ko, P. Vector-meson contributions to the processes. gamma. gamma. r arrow. pi. sup 0. pi. sup 0 ,. pi. sup +. pi. sup minus , K sub L r arrow. pi. sup 0. gamma. gamma. , and K sup + r arrow. pi. sup +. gamma. gamma. United States: N. p., 1990. Web. doi:10.1103/PhysRevD.41.1531.
Ko, P. Vector-meson contributions to the processes. gamma. gamma. r arrow. pi. sup 0. pi. sup 0 ,. pi. sup +. pi. sup minus , K sub L r arrow. pi. sup 0. gamma. gamma. , and K sup + r arrow. pi. sup +. gamma. gamma. United States. https://doi.org/10.1103/PhysRevD.41.1531
Ko, P. Thu . "Vector-meson contributions to the processes. gamma. gamma. r arrow. pi. sup 0. pi. sup 0 ,. pi. sup +. pi. sup minus , K sub L r arrow. pi. sup 0. gamma. gamma. , and K sup + r arrow. pi. sup +. gamma. gamma". United States. https://doi.org/10.1103/PhysRevD.41.1531.
@article{osti_6916170,
title = {Vector-meson contributions to the processes. gamma. gamma. r arrow. pi. sup 0. pi. sup 0 ,. pi. sup +. pi. sup minus , K sub L r arrow. pi. sup 0. gamma. gamma. , and K sup + r arrow. pi. sup +. gamma. gamma},
author = {Ko, P},
abstractNote = {We implement standard chiral perturbation theory to {ital O}({ital p}{sup 4}) by adding vector mesons. We show that it leads to a good agreement of the prediction for {sigma}({gamma}{gamma}{r arrow}{pi}{sup 0}{pi}{sup 0}) with experiments and the vector mesons unitarize the chiral amplitude in an effective way. We also consider {ital K}{sub {ital L}}{r arrow}{pi}{sup 0}{gamma}{gamma}, including the effect of vector mesons, and obtain a very distinct spectrum for two photons. Also, their effects on {gamma}{gamma}{r arrow}{pi}{sup +}{pi}{sup {minus}} and {ital K}{sup +}{r arrow}{pi}{sup +}{gamma}{gamma} are briefly discussed.},
doi = {10.1103/PhysRevD.41.1531},
url = {https://www.osti.gov/biblio/6916170}, journal = {Physical Review, D (Particles Fields); (USA)},
issn = {0556-2821},
number = ,
volume = 41:5,
place = {United States},
year = {1990},
month = {3}
}