Journal article
Search for a standard model Higgs boson produced in association with a top-quark pair and decaying to bottom quarks using a matrix element method
The European Physical Journal C, Vol.75(6), 251
06/09/2015
DOI: 10.1140/epjc/s10052-015-3454-1
PMCID: PMC4464697
PMID: 26097407
Abstract
A search for a standard model Higgs boson produced in association with a top-quark pair and decaying to bottom quarks is presented. Events with hadronic jets and one or two oppositely charged leptons are selected from a data sample corresponding to an integrated luminosity of 19.5fb-1 collected by the CMS experiment at the LHC in pp collisions at a centre-of-mass energy of 8TeV. In order to separate the signal from the larger tt¯ + jets background, this analysis uses a matrix element method that assigns a probability density value to each reconstructed event under signal or background hypotheses. The ratio between the two values is used in a maximum likelihood fit to extract the signal yield. The results are presented in terms of the measured signal strength modifier, μ, relative to the standard model prediction for a Higgs boson mass of 125GeV. The observed (expected) exclusion limit at a 95 % confidence level is μ[removed]
Details
- Title: Subtitle
- Search for a standard model Higgs boson produced in association with a top-quark pair and decaying to bottom quarks using a matrix element method
- Creators
- CMS CollaborationPhilip S BaringerAlice BeanMichael J MurrayStephen J SandersYasar Onel - Physics and Astronomy
- Resource Type
- Journal article
- Publication Details
- The European Physical Journal C, Vol.75(6), 251
- DOI
- 10.1140/epjc/s10052-015-3454-1
- PMID
- 26097407
- PMCID
- PMC4464697
- NLM abbreviation
- Eur Phys J C Part Fields
- ISSN
- 1434-6052
- eISSN
- 1434-6052
- Publisher
- Springer Verlag
- Language
- English
- Date published
- 06/09/2015
- Academic Unit
- Physics and Astronomy
- Record Identifier
- 9984428677502771
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