128 citations · 538 across the 9 of their papers we have counts for
9 papers
Solving integral equations in
Juerg Gasser, Akaki Rusetsky
A dispersive analysis of decays has been performed in the past by many authors. The numerical analysis of the pertinent integral equations is hampered by two technical di…
Cusps in K --> 3pi decays: a theoretical framework
Juerg Gasser, Bastian Kubis, Akaki Rusetsky
Based on the analysis of 6.031*10^7 K+- --> pi0 pi0 pi+- decays, the NA48/2 collaboration has recently determined the S-wave pi-pi scattering lengths a_0-a_2 with high precision. I…
Integrating out strange quarks in ChPT: terms at order p^6
Juerg Gasser, Christoph Haefeli, Mikhail A. Ivanov +1
Chiral perturbation theory in the two-flavour sector allows one to analyse Green functions in QCD in a limit where the strange quark mass is considered to be large in comparison to…
Isospin breaking in Kl4 decays
Gilberto Colangelo, Juerg Gasser, Akaki Rusetsky
Data on Ke4 decays allow one to extract experimental information on the elastic pi pi scattering amplitude near threshold, and to confront the outcome of the analysis with predicti…
Cusps in K --> 3 pi decays
Gilberto Colangelo, Juerg Gasser, Bastian Kubis +1
The pion mass difference generates a pronounced cusp in K --> 3 pi decays. As has recently been pointed out by Cabibbo and Isidori, an accurate measurement of the cusp may allow on…
Revisiting γγ->π^+π^- at low energies
Juerg Gasser, Mikhail A. Ivanov, Mikko E. Sainio
We complete the recalculation of the available two-loop expressions for the reaction γγ->ππin the framework of chiral perturbation theory. Here, we present the results for charged…