Analysis strategy for the SM Higgs boson search in the four-lepton final state in CMS
| Autor: | Alberto GrazianoDepartment of Experimental Physics, University of Torino/INFN, Torino, Italy, for the CMS Collaboration() |
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| Rok vydání: | 2012 |
| Předmět: |
Particle physics
QC1-999 FOS: Physical sciences Expected value 01 natural sciences High Energy Physics - Experiment 030218 nuclear medicine & medical imaging Standard Model Luminosity High Energy Physics - Experiment (hep-ex) 03 medical and health sciences 0302 clinical medicine 0103 physical sciences Physics High signal intensity hep-ex 010308 nuclear & particles physics Branching fraction High Energy Physics::Phenomenology State (functional analysis) 3. Good health Higgs boson High Energy Physics::Experiment Particle Physics - Experiment Lepton |
| Zdroj: | EPJ Web of Conferences, Vol 28, p 12063 (2012) |
| ISSN: | 2100-014X |
| Popis: | The current status of the searches for the SM Higgs boson in the $H$$\rightarrow$$ZZ^{(*)}$$\rightarrow$$4\ell$ decay channel with the CMS experiment is presented. The selection cuts for suppressing the backgrounds while keeping very high signal efficiencies are described, along with the data-driven algorithms implemented to estimate the background yields and the systematic uncertainties. With an integrated luminosity of $1.66 \mathrm{fb}^{-1}$, upper limits at 95% CL on the SM-like Higgs cross section $\times$ branching ratio exclude cross sections from about one to two times the expected value from the Standard Model in the range $150 < m_{H} < 420 \mathrm{GeV}$. No evidence for the existence of the SM Higgs boson has been found so far. "Presented at the 2011 Hadron Collider Physics symposium (HCP-2011), Paris, France, November 14-18 2011, 3 pages, 5 figures." |
| Databáze: | OpenAIRE |
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