Prospects for Observing the Standard Model Higgs Boson Decaying into b\bar{b} Final States Produced in Weak Boson Fusion with an Associated Photon at the LHC

Details Prospects for Observing the Standard Model Higgs Boson Decaying into b\bar{b} Final States Produced in Weak Boson Fusion with an Associated Photon at the LHC Prospects for Observing the Standard Model Higgs Boson Decaying into b\bar{b} Final States Produced in Weak Boson Fusion with an Associated Photon at the LHC

2010-04-04

arxiv.org/abs/1004.0535v1

Phys.Rev.D82:093002,2010

Physics

High Energy Physics

High Energy Physics - Phenomenology

15 pages, 32 figures

Scientific paper

10.1103/PhysRevD.82.093002

One of the primary goals of the Large Hadron Collider is to understand the electroweak symmetry breaking mechanism. In the Standard Model, electroweak symmetry breaking is described by the Higgs mechanism which includes a scalar Higgs boson. Electroweak measurements constrain the Standard Model Higgs boson mass to be in the 114.4 to 157 GeV/c^2 range. Within this mass window, the Higgs predominantly decays into two b-quarks. As such, we investigate the prospect of observing the Standard Model Higgs decaying to b\bar{b} produced in weak-boson-fusion with an associated central photon. An isolated, high pt, central photon trigger is expected to be available at the ATLAS and CMS experiments. In this study, we investigated the effects originating from showering, hadronization, the underlying event model, and jet performance including b-jet calibration on the sensitivity of this channel. We found that the choice of Monte Carlo and Monte Carlo tune has a large effect on the efficacy of the central jet veto and consequently the signal significance. A signal significance of about 1.86 can be achieved for m(Higgs)=115 GeV/c^2 with 100 1/fb of integrated luminosity which correspond to one year at design luminosity at 14 TeV pp collisions.

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