Limit setting procedures and theoretical uncertainties in Higgs boson searches

Details Limit setting procedures and theoretical uncertainties in Higgs boson searches Limit setting procedures and theoretical uncertainties in Higgs boson searches

2012-04-17

arxiv.org/abs/1204.3851v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

20 pages, 7 figures

Scientific paper

We review the CLS method used by ATLAS and CMS to set exclusion limits on the mass of the Higgs boson. We investigate the impact of theoretical uncertainties of Higgs boson cross-sections due to higher order perturbative corrections and convolution with parton densities on exclusion limits. We illustrate the impact on limits of commonly used treatments of these uncertainties with a simulated Higgs search. We adopt a "worst- case scenario" for the perturbative uncertainties. We find that the statistical methods of ATLAS and CMS do not incorporate this specific uncertainty adequately.

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