Can a neutral pion decay to a neutrino and an anti-neutrino?
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Feb28-08, 10:18 AM
But they are not. So the decay occurs with some rate. (It's GIM suppressed, though).
what do you mean by GIM suppressed ?
From PGD, existing limits are :
Br(pi0 -> nunu) < 2.7e-7
Br(pi0 -> nunugamma) < 6e-4
I have no idea, how much we should expect from SM theory, do you know ?