md : SLD
- Beam Polarisation + P in Z decays
- b ( b ) produced mostly forward (backward) wrt e- beam
- cos( ) jet precise + efficient flavour @ production
< > ~ 75-80 % (+ Qjet ~ 80-85% )
< > ~ 100 % S ~ 0.7
- Tagging compensates Statistics (~1/20 wrt LEP)
- Decay flavour: l , K , vertex charge dipole
SLD preliminary result:
md = 0.525 0.057 ps -1