Search for the standard model Higgs boson produced in association with W or Z bosons, and decaying to bottom quarks for ICHEP 2012

A search for the standard model Higgs boson (H) decaying to \bbbar when produced in association with a weak vector boson (V) is reported for the following modes: $\mathrm{W}(\mu\nu)\mathrm{H},~ \mathrm{W}(e\nu)\mathrm{H},~ \mathrm{Z}(\mu\mu)\mathrm{H},~ \mathrm{Z}(ee)\mathrm{H}$ and $\mathrm{Z}(\nu\nu)\mathrm{H}$. The search is performed in a data sample corresponding to an integrated luminosity of $5.0$~fb$^{-1}$, recorded by the CMS detector in proton-proton collisions at the LHC with a center-of-mass energy of 7\TeV during 2011, and in a data sample of up to $5.1$~fb$^{-1}$ of 8\TeV collisions during 2012. No significant excess of events above the background expectation is observed. Upper limits on the VH production cross section times the $\PH\to \bbbar$ branching ratio, with respect to the expectations for a standard model Higgs boson, are derived for a Higgs boson in the mass range 110--135\GeV. In this range, the observed 95\% confidence level upper limits vary from 1.4 to 4.2 times the standard model prediction; the corresponding expected limits vary from 1.2 to 2.8.