Boosted Higgs → b(b)over-bar in vector-boson associated production at 14 TeV

The production of the Standard Model Higgs boson in association with a vector boson, followed by the dominant decay to H -> b (b) over barb, is a strong prospect for confirming and measuring the coupling to b-quarks in pp collisions at root s = 14 TeV. We present an updated study of the prospects for this analysis, focussing on the most sensitive highly Lorentz-boosted region. The evolution of the efficiency and composition of the signal and main background processes as a function of the transverse momentum of the vector boson are studied covering the region 200-1000 GeV, comparing both a conventional dijet and jet substructure selection. The lower transverse momentum region (200-400 GeV) is identified as the most sensitive region for the Standard Model search, with higher transverse momentum regions not improving the statistical sensitivity. For much of the studied region (200-600 GeV), a conventional dijet selection performs as well as the substructure approach, while for the highest transverse momentum regions (> 600 GeV), which are particularly interesting for Beyond the Standard Model and high luminosity measurements, the jet substructure techniques are essential.