Your browser has javascript turned off or blocked. This will lead to some parts of our website to not work properly or at all. Turn on javascript for best performance.

The browser you are using is not supported by this website. All versions of Internet Explorer are no longer supported, either by us or Microsoft (read more here: https://www.microsoft.com/en-us/microsoft-365/windows/end-of-ie-support).

Please use a modern browser to fully experience our website, such as the newest versions of Edge, Chrome, Firefox or Safari etc.

Photo of Johan Bijnens

Johan Bijnens

Professor

Photo of Johan Bijnens

pi K scattering in three flavour ChPT : π K scattering in three flavour ChPT

Author

  • Johan Bijnens
  • Pierre Dhonte
  • Pere Talavera

Summary, in English

We present the scattering lengths for the piK processes in the three flavour Chiral Perturbation Theory (ChPT) framework at next-to-next-to-leading order (NNLO). The calculation has been performed analytically but we only include analytical results for the dependence on the low-energy constants (LECs) at NNLO due to the size of the expressions. These results, together with resonance estimates of the NNLO LECs are used to obtain constraints on the Zweig rule suppressed LECs at NLO, L-4(r) and L-6(r). Contrary to expectations from NLO order calculations we find them to be compatible with zero. We do a preliminary study of combining the results from pipi scattering, piK scattering and the scalar form-factors and find only a marginal compatibility with all experimental/dispersive input data.

Department/s

  • Department of Astronomy and Theoretical Physics

Publishing year

2004-05-01

Language

English

Pages

811-833

Publication/Series

Journal of High Energy Physics

Volume

2004

Issue

JHEP05(2004)

Document type

Journal article

Publisher

Springer

Topic

  • Subatomic Physics

Keywords

  • Chiral Lagrangians
  • Spontaneous Symmetry Breaking

Status

Published

ISBN/ISSN/Other

  • ISSN: 1029-8479