Speaker
Dr
Siba Prasad Das
(AHEP,IFIC, University of Valencia)
Description
We analyze the prospect for observing the intermediate neutral Higgs
($h_2$) boson in its decay to two lighter Higgs bosons ($h_1$) at the
Hadron Colliders in the framework of the CP violating MSSM using the PYTHIA event
generator. We consider the lepton+ 4-jets+ missing energy channel from $p \bar p \ra
W h_2 \ra W h_1 h_1 \ra l \nu_l b \bar b b\bar b$, with two or three tagged
$b$-jets. We treated $c$-jets separately from other light flavor jets and
employed the mis-tagging criterion. We explicitly considered all possible
Standard Model backgrounds. We found that it is very hard to observe
this signature in the LEP-allowed region of parameter space,
even though the background is manageable, due to the small signal
efficiency at Tevatron. By applying judiciously kinematical selections,
we suppressed huge backgrounds and left with a few ten signal events at LHC.
Requiring $m_{h_2} \lsim 140$ GeV leads the total background comparable
to signal. Our analysis show that the Higgs signal at LHC might be show up over
the backgrounds in the vicinity of present LEP exclusion.
Primary authors
Prof.
Manuel Drees
(PI, University of Bonn)
Dr
Siba Prasad Das
(AHEP,IFIC, University of Valencia)
