Draft:New final states in existing module selecting B -> Eta(') MuMu decays
We add eta->pipigamma and eta'->rhogamma to the existing eta->pipipi0 decays. A second line will be added to add eta->gammagamma decays. Current test yield:
StrippingReport INFO Event 10000, Good event 10000
| *Decision name*|*Rate,%*|*Accepted*| *Mult*|*ms/evt*|
|_StrippingGlobal_ | 0.0400| 4| | 15.597|
|_StrippingSequenceStreamBhadron_ | 0.0400| 4| | 15.571|
|!StrippingB2EtaMuMuAllX0SelectionLine | 0.0400| 4| 1.750| 14.313|
|!StrippingB2EtaMuMuAllX0SelectionLine_TIMING | 0.0400| 4| 1.750| 0.051|