Speaker
Mr
Sergey Shkarovskiy
(Joint Institute for Nuclear Research (RU))
Description
NA48/2 results related to ChPT testing are presented.
A most precise measurement of the charged kaon semileptonic form factors
has been obtained from 4.4 million Ke3 and 2.3 million Kmu3 events collected
in 2004. In addition, the branching ratio of the K+- -> pi+- pi0 e+ e- decay,
never observed so far, has been obtained from a sample of about 4900 candidates.
with less than 5% background. The branching ratio in the full kinematic region
is (4.24 +- 0.14)x10^-6, in agreement with ChPT predictions.
Author
Mr
Sergey Shkarovskiy
(Joint Institute for Nuclear Research (RU))
