Relativistic corrections to the Pionium Lifetime

Preprint

21 October 1999

preprint
Published by arXiv in arXiv

https://doi.org/10.48550/arXiv.hep-ph/9905539

Abstract

Next to leading order contributions to the pionium lifetime are considered within non-relativistic effective field theory. A more precise determination of the coupling constants is then needed in order to be consistent with the relativistic pion-pion scattering amplitude which can be obtained from chiral perturbation theory. The relativistic correction is found to be 4.1% and corresponds simply to a more accurate value for the non-relativistic decay momentum.

Keywords

RELATIVISTIC CORRECTION
EFFECTIVE FIELD THEORY
RELATIVISTIC EFFECTIVE
SCATTERING AMPLITUDE
PERTURBATION THEORY
PIONIUM LIFETIME
LIFETIME NEXT
CHIRAL

All Related Versions

Version 1, 1999-05-28, ArXiv
Version 2, 1999-10-21, ArXiv
Published version: Physical Review D, 61 (7).

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