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- QCD, and W/Z+(light quark) jets backgrounds are significantly reduced.
**Top background is irreducible, but b-tagging provides additional handles to control and measure it.
- Reducing non-top SM backgrounds by requiring b-tags could be one of the keys to the early discovery of SUSY at the LHC.
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- In many scenarios, where the third-generation of squarks are expected to be light, most new physics events will contain two or four b- or t-quarks.
- Even if SUSY is first discovered in inclusive jet + MET or lepton events, understanding the production of third-generation squarks will be critical to answer important physics questions.
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Signature almost unexplored in ATLAS: b-tag and missing ET are among the most challenging and complex techniques. Expertise in multiple areas is required. Matches well SLAC strengths.
Experimental challenges:
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