Search for low mass Standard Model Higgs boson at D0

par Dr Samuel Calvet (LAL)

vendredi 13 mars 2009, 14:30 → 15:30 Europe/Paris

Amphi M. Perey (IPHC/DRS)

We present results of searches for low mass Higgs boson in ppbar collisions based on the analysis of data collected by the D0 experiment at the Fermilab Tevatron. The Higgs boson is searched in the WH and ZH associated production modes in the Standard Model framework. We consider the final states where the Higgs boson decays into bbbar quarks pair, and the vector boson (W or Z) into leptons. The advanced multivariate techniques (matrix element calculations, boosted decision trees) used in these analysis will be presented. No signal-like excess is observed, and we set 95% C.L. upper limits on the WH/ZH production cross section multiplied by the branching ratio for H->bb for Higgs boson masses between 100 and 150 GeV.