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Photo of Johan Bijnens

Johan Bijnens

Professor

Photo of Johan Bijnens

eta to 3 pi at Two Loops In Chiral Perturbation Theoryeta to 3 pi at Two Loops In Chiral Perturbation Theory

Author

  • Johan Bijnens
  • Karim Ghorbani

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

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