Abstract
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 , 8, and 13 TeV, corresponding to integrated luminosities of up to 5.1, 19.7, and , 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 bosons, bosons, photons, 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 .
- Received 8 April 2018
- Revised 1 May 2018
DOI:https://doi.org/10.1103/PhysRevLett.120.231801
Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. Funded by SCOAP3.
© 2018 CERN, for the CMS Collaboration
Physics Subject Headings (PhySH)
Viewpoint
Sizing Up the Top Quark’s Interaction with the Higgs
Published 4 June 2018
A proton collision experiment at CERN provides a new handle on the Higgs boson’s interaction with the heaviest of the quarks.
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