Abstract
We present a study of the Higgs production at the LHC via weak boson fusion, with the Higgs boson decaying into a bb̄ pair. A detailed partonic LO calculation of all the potential backgrounds is performed. We conclude that this channel for Higgs production can be extracted from the backgrounds, and present our estimates of the accuracy in the determination of the Hbb̄ Yukawa coupling.
Highlights
A Higgs boson in the so-called low-mass region (115 < mH (GeV) < 140) decays predominantly in bb final states
In this note we document a study of the H → bb decay in the electroweak boson fusion (WBF) production channel and of its backgrounds, and we discuss the potential of this process for the determination of the yHbb Yukawa coupling
4 jet final states: these are over 100 times larger than the signal, but could be evaluated with accuracy using the sidebands of the bb mass spectrum
Summary
A Higgs boson in the so-called low-mass region (115 < mH (GeV) < 140) decays predominantly in bb final states. In this note we document a study of the H → bb decay in the electroweak boson fusion (WBF) production channel and of its backgrounds, and we discuss the potential of this process for the determination of the yHbb Yukawa coupling. The results obtained are based on a leading order partonic calculation of the matrix elements (ME) describing signal and background processes. The latter include the following channels: QCD bbjj production, Z(→ bb)jj, W/Z(→ jj)bb, tt → bb + jets, QCD four jets production (where two light jets are misidentified as generated by b quarks), and contributions from multiple overlapping events. In the Conclusions we summarise and discuss our final results
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