# Bs oscillations

- Inclusive analyses : l - l; l - Qjet
- Semi - exclusive : Ds(l) - multitag
- High frequency + fs small + difficult Ds reconstruction:
  - no measurement ! ( ... yet )
- How to put a limit :
  - reliable ( = safe from statistical fluctuation)
  - include systematics
  - easy combination of analyses/experiments
- How to push the limit exploting:
  - correlation among tags
  - event by event discriminators
- Contributions from LEP only ( at present )
- Most Results are still Preliminary (P)

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