"Associated Higgs boson production in events with MET and b-jets at CDF"

The CDF and D0 experiments at Fermilab's Tevatron are now becoming sensitive 
to the standard model Higgs boson. A recent combination of the CDF and D0 
results excludes a Higgs mass in the range between 160 and 170 GeV at 95% C.L. 
I will discuss the progress towards achieving the Standard Model sensitivity 
at low mass using new analysis techniques to isolate the Higgs boson signal. 
Near the LEP limit the Higgs boson is expected to decay to a pair of b-quarks 
most of the time, and the most sensitive are the searches for the Higgs boson 
production in association with a W or Z boson. The modes in which the Z decays 
to neutrinos or the charged lepton from the W decay escape the detection in CDF
are analyzed using events with large missing transverse energy and b-quark jets. 
I will discuss the challenges to perform a search in this signature, and introduce
the tools that allowed to greatly increase the sensitivity to the low mass Higgs 
boson searches.