Branching fraction of B0 -> K* mu mu decay

[lavster]

hi can anyone tell me what the branching fraction of B0 -> K* mu mu decay is and/or tell me a webpage i can find info on this decay which is accessible to ppl that doesn't have a huge knowledge in this field (i am an undergraduate)

thanks

 

[Vanadium 50]

It's not simple, as mu+mu- includes the J/Psi and the Psi(2S), so some mechanism of subtraction is required. That means there isn't a single number that is well-defined.

 

[Hepth]

from http://pdg.lbl.gov/2008/tables/rpp2008-tab-mesons-bottom.pdf

looks like about 8*10^-7 on page 16, but as said above, its very rough. But if you're just looking for magnitude i guess that helps.