Dispersive approach to chiral perturbation theory
- Author(s)
- Martin Zdrahal, J Novotný
- Abstract
We generalize the reconstruction theorem of Stern, Sazdjian, and Fuchs based on the dispersion relations to the case of the (2→2) scattering of all the pseudoscalar octet mesons (π,K,η). We formulate it in a general way and include also a discussion of the assumptions of the theorem. It is used to obtain the amplitudes of all such processes in the isospin limit to the one-loop order (and can be straightforwardly extended to two loops) independently on the particular power-counting scheme of the chiral perturbation theory in question. The results in this general form are presented.
- Organisation(s)
- Particle Physics
- External organisation(s)
- Charles University Prague
- Journal
- Physical Review D
- Volume
- 78
- No. of pages
- 21
- ISSN
- 1550-7998
- Publication date
- 2008
- Peer reviewed
- Yes
- Austrian Fields of Science 2012
- 1030 Physics, Astronomy
- Portal url
- https://ucrisportal.univie.ac.at/en/publications/dispersive-approach-to-chiral-perturbation-theory(a12d1f23-23f9-4846-84f4-5c571b8728f8).html