Measuring Higgs boson couplings at the CERN LHC - art. no. 013009

For an intermediate mass Higgs boson with SM-like couplings the CERN LHC al lows observation of a variety of decay channels in production by gluon fusi on and weak boson fusion. Cross section ratios provide measurements of vari ous ratios of Higgs couplings, with accuracies of order 15% for 100 fb(-1) of data in each of the two LHC experiments. For Higgs boson masses above 12 0 GeV, minimal assumptions on the Higgs sector allow for an indirect measur ement of the total Higgs boson width with an accuracy of 10 to 20%, and of the H-->WW partial width with an accuracy of about 10%.