Comparing D0 Decay Rates: K(-) + (pi)(+) vs. K(-) + e(+) + (v_e)

[holly56]

Which of the following should occur at a greater rate: D0 to K(-) + (pi)(+) OR D0 to K(-) + positron + electron-flavor neutrino?
I know that there are other decays that are Cabibbo supressed (or doubly so) but I can't see what would make one of these more likely than the other.
Thanks

 

[mathman]

http://pdg.lbl.gov/2012/tables/rpp2012-sum-mesons.pdf

The above contains everything you may want to know and more.

 

[mfb]

I think the pdglive-tables are easier to use:
http://pdglive.lbl.gov/Rsummary.brl?nodein=S032&inscript=Y&sub=Yr&return=MXXX035

They have a similar branching fraction, and the different phase space can lead to differences.