Observation of t t H production
The observation of Higgs boson production in association with a top quark-antiquark pair is reported, based on a combined analysis of proton-proton collision data at center-of-mass energies of ffiffi s p ¼ 7, 8, and 13 TeV, corresponding to integrated luminosities of up to 5.1, 19.7, and 35.9 fb−...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English English |
| Published: |
American Physical Society
2018
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| Subjects: | |
| Online Access: | http://irep.iium.edu.my/65974/ http://irep.iium.edu.my/65974/ http://irep.iium.edu.my/65974/ http://irep.iium.edu.my/65974/1/65974_Observation%20of%20t%C2%AFtH%20Production_article.pdf http://irep.iium.edu.my/65974/2/65974_Observation%20of%20t%C2%AFtH%20Production_scopus.pdf |
| Summary: | The observation of Higgs boson production in association with a top quark-antiquark pair is reported,
based on a combined analysis of proton-proton collision data at center-of-mass energies of ffiffi
s p ¼ 7, 8, and
13 TeV, corresponding to integrated luminosities of up to 5.1, 19.7, and 35.9 fb−1, respectively. The data
were collected with the CMS detector at the CERN LHC. The results of statistically independent searches
for Higgs bosons produced in conjunction with a top quark-antiquark pair and decaying to pairs of
W bosons, Z bosons, photons, τ leptons, or bottom quark jets are combined to maximize sensitivity. An
excess of events is observed, with a significance of 5.2 standard deviations, over the expectation from the
background-only hypothesis. The corresponding expected significance from the standard model for a
Higgs boson mass of 125.09 GeV is 4.2 standard deviations. The combined best fit signal strength
normalized to the standard model prediction is 1.26þ0.31 −0.26 . |
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