https://doi.org/10.1140/epja/i2014-14137-3
Regular Article - Theoretical Physics
The decay 
in the Nambu-Jona-Lasinio model
1
Institut für Kernphysik, Karlsruhe Institute of Technology (KIT), Karlsruhe, Germany
2
Bogoliubov Laboratory of Theoretical Physics, JINR, 141980, Dubna, Russia
* e-mail: dmitriy.kostunin@kit.edu
Received:
9
July
2014
Revised:
13
August
2014
Accepted:
26
August
2014
Published online:
11
September
2014
The width of the decay 
has recently been measured by the BaBar experiment. The estimation of this width is given in the framework of the NJL model with the axial-vector mesons. Prediction is in agreement with experimental data. It is shown that the 
transition contribution plays an important role and allows us to bring the NJL prediction to the data.
© SIF, Springer-Verlag Berlin Heidelberg, 2014
