Johan Bijnens
Professor, Deputy Head of Division
eta to 3 pi at Two Loops In Chiral Perturbation Theoryeta to 3 pi at Two Loops In Chiral Perturbation Theory
Author
Summary, in English
We calculate the decay eta to3 pi at next-to-next-to-leading order or order p<sup>6</sup> in Chiral Perturbation Theory. The corrections are somewhat larger than was indicated by dispersive estimates. We present numerical results for the Dalitz plot parameters, the ratio r of the neutral to charged decay and the total decay rate. In addition we derive an inequality between the slope parameters of the charged and neutral decay. The experimental charged decay rate leads to central values for the isospin breaking quantities R=42.2 and Q=23.2.
Department/s
- Theoretical Particle Physics - Has been reorganised
Publishing year
2007
Language
English
Publication/Series
Journal of High Energy Physics
Volume
0711
Document type
Journal article
Publisher
Springer
Topic
- Subatomic Physics
Status
Published
ISBN/ISSN/Other
- ISSN: 1029-8479