Speaker
Dr
Cristina Lazzeroni
(University of Birmingham, UK)
Description
We report our final result on the measurement of direct photon emission
(DE) in the decay K+- -> pi+- pi0 gamma and its interference (INT) with
the inner bremsstrahlung amplitude. For this measurement the full NA48/2
data set with about 600k reconstructed K+- -> pi+- pi0 gamma decays was
analyzed, which is factor of 30 larger than for previous experiments and
a factor of three w.r.t. our preliminary result.
From this, the sizes of both the DE and the INT amplitudes have been
measured with high precision, with the INT amplitude being observed for
the first time. In addition, the CP violating asymmetry between K+ and K- has been
obtained to be less than 10^3 in this channel.
Primary author
Dr
Cristina Lazzeroni
(University of Birmingham, UK)
