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Title: {ital K}{sub {ital S}}{r_arrow}{gamma}{gamma}, {ital K}{sub {ital L}}{r_arrow}{pi}{sup 0}{gamma}{gamma} and unitarity

Abstract

Agreement between the experimental value {Gamma}({ital K}{sub {ital S}}{r_arrow}{gamma}{gamma}) and the number predicted via a one-loop chiral perturbation theory calculation has been cited as a success for the latter. On the other hand, the one-loop prediction for the closely related process {ital K}{sub {ital L}}{r_arrow}{pi}{sup 0}{gamma}{gamma} has been found to be a factor 3 below the experimental value. Using the inputs of unitarity and dispersion relations, we demonstrate the importance of higher order loop effects to both of these processes.

Authors:
;  [1]
  1. Department of Physics and Astronomy, University of Massachusetts, Amherst, Massachusetts 01003 (United States)
Publication Date:
OSTI Identifier:
142714
Resource Type:
Journal Article
Journal Name:
Physical Review, D
Additional Journal Information:
Journal Volume: 49; Journal Issue: 5; Other Information: PBD: 1 Mar 1994
Country of Publication:
United States
Language:
English
Subject:
66 PHYSICS; KAONS NEUTRAL SHORT-LIVED; RADIATIVE DECAY; KAONS NEUTRAL LONG-LIVED; PIONS NEUTRAL; UNITARITY; PERTURBATION THEORY; DISPERSION RELATIONS

Citation Formats

Kambor, J., and Holstein, B.R. {ital K}{sub {ital S}}{r_arrow}{gamma}{gamma}, {ital K}{sub {ital L}}{r_arrow}{pi}{sup 0}{gamma}{gamma} and unitarity. United States: N. p., 1994. Web. doi:10.1103/PhysRevD.49.2346.
Kambor, J., & Holstein, B.R. {ital K}{sub {ital S}}{r_arrow}{gamma}{gamma}, {ital K}{sub {ital L}}{r_arrow}{pi}{sup 0}{gamma}{gamma} and unitarity. United States. doi:10.1103/PhysRevD.49.2346.
Kambor, J., and Holstein, B.R. Tue . "{ital K}{sub {ital S}}{r_arrow}{gamma}{gamma}, {ital K}{sub {ital L}}{r_arrow}{pi}{sup 0}{gamma}{gamma} and unitarity". United States. doi:10.1103/PhysRevD.49.2346.
@article{osti_142714,
title = {{ital K}{sub {ital S}}{r_arrow}{gamma}{gamma}, {ital K}{sub {ital L}}{r_arrow}{pi}{sup 0}{gamma}{gamma} and unitarity},
author = {Kambor, J. and Holstein, B.R.},
abstractNote = {Agreement between the experimental value {Gamma}({ital K}{sub {ital S}}{r_arrow}{gamma}{gamma}) and the number predicted via a one-loop chiral perturbation theory calculation has been cited as a success for the latter. On the other hand, the one-loop prediction for the closely related process {ital K}{sub {ital L}}{r_arrow}{pi}{sup 0}{gamma}{gamma} has been found to be a factor 3 below the experimental value. Using the inputs of unitarity and dispersion relations, we demonstrate the importance of higher order loop effects to both of these processes.},
doi = {10.1103/PhysRevD.49.2346},
journal = {Physical Review, D},
number = 5,
volume = 49,
place = {United States},
year = {1994},
month = {3}
}