BPHY23: Extend to include all 4 muon+1/2/3/4 tracks final states
Further expanded BPHY23 to include combinations of two decays out of the following list:
- phi -> 2mu
- J/psi -> 2mu
- psi(2S) -> 2mu
- Upsilon(1S) -> 2mu
- Upsilon(2S) -> 2mu
- Zc(3900) -> J/psi pi -> 2mu pi
- B+ -> J/psi K+ -> 2mu K+
- D+/Ds+ -> phi pi+ -> 2mu pi+
- psi(2S)/X(3872) -> J/psi pi pi -> 2mu 2pi
- B0 -> J/psi K* -> 2mu K pi
- Bs0 -> J/psi phi -> 2mu 2K
- Upsilon(2S) -> Upsilon(1S) pi pi -> 2mu 2pi
So the final states include 4mu + 1/2/3/4 tracks.