Speaker
Dr
Cristina Lazzeroni Lazzeroni
(University of Birmingham)
Description
The measurement of the S-wave pi pi scattering lengths is a fundamental
test of the validity of Chiral Perturbation Theory. We report on the
final NA48/2 result, which uses the complete NA48/2 data set with more
than a million reconstructed Ke4 decays. From these events we have
determined the decay form factors and pi pi scattering lengths a0_0 and
a2_0. The result is the most precise measurement of the scattering
lengths and in excellent agreement with the prediction of Chiral Perturbation
Theory.
Primary author
Dr
Cristina Lazzeroni Lazzeroni
(University of Birmingham)
