h->gammagamma
Conference note can be found
here .
Introduction:
In the Standard Model (SM) Higgs boson decays into gamma pair with a
very small braching ratio (10^-3 - 10^-4) at the Tevatron. However many
extensions of the SM allow enhanced gamma pair decay rate of Higgs largely
due to suppressed coupling to fermions. Fermiphobic Higgs and Topcolor Higgs
are two scenarios of our search interest.
Data Sample and Event Selection
The analysis is based on the data collected from April 2002 to September 2003.
The integrated luminosity used in the analysis is 191+-13 pb-1 .
Event Selection Criteria:
- Two isolated EM object with ET > 25 GeV and
no associated track.
- pT of diphoton system > 35 GeV.
Plots:
Invariant mass of gammagamma
(.eps version)
Branching ratio limit
(.eps version)
Results:
We set an upper 95% CL limit on the diphoton branching ratio as
a function of Higgs mass for Fermiphobic and Topcolor Higgs scenarios.
This page is maintained by Qizhong Li and Suyong Choi
Last modified: Fri Mar 19 15:47:57 CST 2004