Threshold parameters ofscattering in QCD
- 1 May 1991
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review D
- Vol. 43 (9), R2757-R2760
- https://doi.org/10.1103/physrevd.43.r2757
Abstract
We evaluate the low-energy expansion of the scattering amplitude to one-loop order in chiral perturbation theory. We predict the pertinent scattering lengths and effective-range parameters beyond the current-algebra values. We compare to the existing data and point towards the need of more accurate experiments.
Keywords
This publication has 21 references indexed in Scilit:
- π-πscattering and chiral LagrangiansPhysical Review D, 1988
- Chiral perturbation theory: Expansions in the mass of the strange quarkNuclear Physics B, 1985
- Chiral perturbation theory to one loopAnnals of Physics, 1984
- Low energy theorems as precision tests of QCDPhysics Letters B, 1983
- On the low energy structure of QCDPhysics Letters B, 1983
- Phenomenological LagrangiansPhysica A: Statistical Mechanics and its Applications, 1979
- Departures from chiral symmetryPhysics Reports, 1975
- Chiral Perturbation TheoryPhysical Review D, 1973
- Perturbation Theory about a Goldstone SymmetryPhysical Review Letters, 1971
- Soft Pions, Chiral Symmetry, and Phenomenological LagrangiansPhysical Review B, 1969