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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| Online Access: | 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 |
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| author | Sirunyan, A. M. Tumasyan, A. R. Adam, Wolfgang Ambrogi, Federico Asilar, Ece Md. Ali, Mohd. Adli |
| author_facet | Sirunyan, A. M. Tumasyan, A. R. Adam, Wolfgang Ambrogi, Federico Asilar, Ece Md. Ali, Mohd. Adli |
| author_sort | Sirunyan, A. M. |
| building | IIUM Repository |
| collection | Online Access |
| description | 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 . |
| first_indexed | 2025-11-14T17:09:48Z |
| format | Article |
| id | iium-65974 |
| institution | International Islamic University Malaysia |
| institution_category | Local University |
| language | English English |
| last_indexed | 2025-11-14T17:09:48Z |
| publishDate | 2018 |
| publisher | American Physical Society |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | iium-659742018-08-29T02:19:45Z http://irep.iium.edu.my/65974/ Observation of t t H production Sirunyan, A. M. Tumasyan, A. R. Adam, Wolfgang Ambrogi, Federico Asilar, Ece Md. Ali, Mohd. Adli Q Science (General) QC Physics 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 . American Physical Society 2018-06-04 Article PeerReviewed application/pdf en http://irep.iium.edu.my/65974/1/65974_Observation%20of%20t%C2%AFtH%20Production_article.pdf application/pdf en http://irep.iium.edu.my/65974/2/65974_Observation%20of%20t%C2%AFtH%20Production_scopus.pdf Sirunyan, A. M. and Tumasyan, A. R. and Adam, Wolfgang and Ambrogi, Federico and Asilar, Ece and Md. Ali, Mohd. Adli (2018) Observation of t t H production. Physical Review Letters, 120 (23). pp. 231801-1. ISSN 0031-9007 E-ISSN 1079-7114 https://journals.aps.org/prl/pdf/10.1103/PhysRevLett.120.231801 10.1103/PhysRevLett.120.231801 |
| spellingShingle | Q Science (General) QC Physics Sirunyan, A. M. Tumasyan, A. R. Adam, Wolfgang Ambrogi, Federico Asilar, Ece Md. Ali, Mohd. Adli Observation of t t H production |
| title | Observation of t t H production |
| title_full | Observation of t t H production |
| title_fullStr | Observation of t t H production |
| title_full_unstemmed | Observation of t t H production |
| title_short | Observation of t t H production |
| title_sort | observation of t t h production |
| topic | Q Science (General) QC Physics |
| url | 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 |