https://doi.org/10.1140/epjc/s2005-02155-7
theoretical physics
Isospin breaking in 
decays III : Bremsstrahlung and fit to experiment
Department of Theoretical Physics, Lund University, Sölvegatan 14A, 22362, Lund, Sweden
We complete here our work on isospin violation in the system. We first calculate 
to the same order as we did in papers I and II of this series. This adds the effects of order G
27
p
2 (m
u
-m
d
) and G
27
p
2
e
2 to earlier work. We calculate also the lowest order bremsstrahlung contributions, 
. With these and our earlier results we perform a full fit to all available CP-conserving data in the 
system including isospin violation effects. We perform these fits under various input assumptions as well as test the factorization and the vector dominance model for the weak NLO low energy constants.
© Springer-Verlag, 2005
