1. Updates on the p0p0g analysis Upper limit for h→p0p0 decay
S. Giovannella
Preliminary studies for:
Upper limit for h→p0p0 decay
Exclusive analysis adding 2005/2006 data
f decays meeting – 28 Apr 2006

2. Upper limit for h→p0p0
The data sample used for the f→Sg analysis can be used to evaluate
the upper limit for the h→p0p0 decay by looking at the Mpp spectra
All 450 pb-1 from 2001/2002 data considered
Data-MC normalization done
“by eye” using the ratio between
the different MC contribution
evaluated at √s = MeV
For h→p0p0 the current PDG
upper limit is used
The U.L. can be easly improved by
a relevant factor

3. Exclusive analysis: Sg vs wp0 events
Analysis reminder:
Two kinematic fit with a process independent pairing procedure
After having applied a c2/Ndof<5 cut, the p0g pair providing the Mpg closest to Mw
is chosen
wp0 events are selected in a 3sM window around Mw, Sg is all the rest
√s = MeV
wp0 Sg

4. Exclusive analysis: off-peak data
Excl. analysis repeated for scan + off-peak (28 pb-1 from Feb06) data from 2005/2006
ECL efficiency evaluated directly from data using the new UFO stream (ScF=1:20)!
Not perfect data-MC comparison… A dedicated MC prodution is needed!
√s = MeV
wp0 Sg

5. Sg and wp0 events vs √s
wp0 fit using 2001/2002 data only Sg
wp0

6. wp0 events vs √s