The deviation of the phase of the 
violation parameter
from 
is sensitive to 
violation.
For a precise and a less model dependent analysis, we need to know
the phase difference 
, i.e.
how much is the phase of the 
amplitude different from the
total decay amplitude.
Based on Eq. 4 and using only the important decay modes:
The 
direct emission amplitude and the I=2 amplitude can safely
be neglected and the phase of the inner bremsstrahlung decay
amplitude is almost identical to that of 
. The important contributions
are:
Experimentaly, we have 
and
therefore we can write:
The phase difference 
constraints a possible contribution of the
amplitude.
We can estimate from the measurement of 
to a good precision the
violating contribution:
Assuming no violation in the decay amplitudes, we can
estimate a possible 
mass difference:
