 #1
tm33333
 4
 2
 Homework Statement:
 check for isospin conservation in tau(minus)>muon(minus)+anti electron neutrino
 Relevant Equations:

I3=QY/2
Y=B+S
I got the I3 values for the tau(minus) to be 1, as charge is 1 and Y=0. For muon(minus) i got I3 to be 1 too using the same equation and the anti electron neutrino to have an isospin of zero (since Q=0, Y=0). This shows I3 to be conserved (which is needed for strong interaction i believe), but what about the overall isospin, I? To calculate this do i add the individual I3's from each side together? or do i take the maximum value from each side (in which case overall isospin wouldn't be conserved)