Search for t(t)over-barH production in the all-jet final state in proton-proton collisions root s=13 TeV
A search is presented for the associated production of a Higgs boson with a top quark pair in the all-jet final state. Events containing seven or more jets are selected from a sample of proton-proton collisions at √ s = 13 TeV collected with the CMS detector at the LHC in 2016, corresponding to...
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| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English English English |
| Published: |
Springer Link
2018
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| Subjects: | |
| Online Access: | http://irep.iium.edu.my/70471/1/70471_Search%20for%20t%C2%AFtH%20production%20in%20the%20all-jet_article.pdf http://irep.iium.edu.my/70471/7/70471_Search%20for%20t%28t%29over-barH_WOS.pdf http://irep.iium.edu.my/70471/13/70471_Search%20for%20tth%20production%20in%20the%20all-jet%20final%20_scopus.pdf http://irep.iium.edu.my/70471/ https://link.springer.com/content/pdf/10.1007%2FJHEP06%282018%29101.pdf |
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| Summary: | A search is presented for the associated production of a Higgs boson with a
top quark pair in the all-jet final state. Events containing seven or more jets are selected
from a sample of proton-proton collisions at √
s = 13 TeV collected with the CMS detector
at the LHC in 2016, corresponding to an integrated luminosity of 35.9 fb−1
. To separate
the t¯tH signal from the irreducible t¯t + bb background, the analysis assigns leading order ¯
matrix element signal and background probability densities to each event. A likelihoodratio statistic based on these probability densities is used to extract the signal. The results
are provided in terms of an observed t¯tH signal strength relative to the standard model
production cross section µ = σ/σSM, assuming a Higgs boson mass of 125 GeV. The best
fit value is ˆµ = 0.9 ± 0.7(stat) ± 1.3(syst) = 0.9 ± 1.5 (tot), and the observed and expected
upper limits are, respectively, µ < 3.8 and < 3.1 at 95% confidence levels. |
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