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The effect of isospin violation on scalar meson production
C. Hanhart, B. Kubis, J. R. Pelaez
We investigate the isospin-violating mixing of the light scalar mesons a0(980) and f0(980) within the unitarized chiral approach. Isospin-violating effects are considered to leadin…
Cusps in K_L --> 3 pi decays
M. Bissegger, A. Fuhrer, J. Gasser +2
The pion mass difference generates a pronounced cusp in K --> 3 pi decays, the strength of which is related to the pi pi S-wave scattering lengths. We apply an effective field theo…
Hyperon decay form factors in chiral perturbation theory
Andre Lacour, Bastian Kubis, Ulf-G. Meißner
We present a complete calculation of the SU(3)-breaking corrections to the hyperon vector form factors up to O(p^4) in covariant baryon chiral perturbation theory. Partial higher-o…
Investigation of a0-f0 mixing
Christoph Hanhart, Bastian Kubis, Jose R. Pelaez
We investigate the isospin-violating mixing of the light scalar mesons a0(980) and f0(980) within the unitarized chiral approach. Isospin-violating effects are considered to leadin…
An introduction to chiral perturbation theory
Bastian Kubis
A brief introduction to the low-energy effective field theory of the standard model, chiral perturbation theory, is presented.