Dear editor

The authors have appreciate the referee's valuable remarks to improve the document.
To satisfay the last requierements, 

a) concerning point (1), we have modified the gain in efficiency for both channels 
e+ gamma and mu+ gamma compared to the up to now SuperKamiokande known results that
we have also referenced (ie. [59]);

b) concerning point (2), we have added in table 10 the values of the p_alpha probability.


Sincerely yours
Dr. JE Campagne