Top Background Extrapolation for H -> WW Searches at the LHC

Details Top Background Extrapolation for H -> WW Searches at the LHC Top Background Extrapolation for H -> WW Searches at the LHC

2004-04-05

arxiv.org/abs/hep-ph/0404045v2

Phys.Rev.D70:014020,2004

Physics

High Energy Physics

High Energy Physics - Phenomenology

17 pages, 9 tables, 4 figures; LO caveat emphasized, version to be published in Phys. Rev. D

Scientific paper

10.1103/PhysRevD.70.014020

A leading order (LO) analysis is presented that demonstrates that key top backgrounds to H -> W^+W^- -> l^\pm l^\mp \sla{p}_T decays in weak boson fusion (WBF) and gluon fusion (GF) at the CERN Large Hadron Collider can be extrapolated from experimental data with an accuracy of order 5% to 10%. If LO scale variation is accepted as proxy for the theoretical error, parton level results indicate that the tt~j background to the H -> WW search in WBF can be determined with a theoretical error of about 5%, while the tt~ background to the H -> WW search in GF can be determined with a theoretical error of better than 1%. Uncertainties in the parton distribution functions contribute an estimated 3% to 10% to the total error.

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