Search for the Associated Production of the Standard-Model Higgs Boson in the All-Hadronic Channel

We report on a search for the standard-model Higgs boson in pp̄ collisions at √s=1.96 TeV using an integrated luminosity of 2.0 fb^-1. We look for production of the Higgs boson decaying to a pair of bottom quarks in association with a vector boson V (W or Z) decaying to quarks, resulting in a four-jet final state. Two of the jets are required to have secondary vertices consistent with B-hadron decays. We set the first 95% confidence level upper limit on the $VH$ production cross section with V(→qq̄/qq^')H(→bb̄) decay for Higgs boson masses of 100--150 GeV/c² using data from run II at the Fermilab Tevatron. For mH=120 GeV/c², we exclude cross sections larger than 38 times the standard-model prediction.