Probing Higgs width and top quark Yukawa coupling from tt¯H and tt¯tt¯ productions

We demonstrate that four top-quark production is a powerful tool to constrain the top Yukawa coupling. The constraint is robust in the sense that it does not rely on the Higgs boson decay. Taking into account the projection of the tt¯H production by the ATLAS Collaboration, we obtained a bound on th...

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Bibliographic Details
Published in:Physical review. D 2017-03, Vol.95 (5), p.053004
Main Authors: Cao, Qing-Hong, Chen, Shao-Long, Liu, Yandong
Format: Article
Language:English
Subjects:
Coupling
Higgs bosons
Large Hadron Collider
Luminosity
Quarks
Superconducting supercolliders
Online Access:Get full text
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Summary:We demonstrate that four top-quark production is a powerful tool to constrain the top Yukawa coupling. The constraint is robust in the sense that it does not rely on the Higgs boson decay. Taking into account the projection of the tt¯H production by the ATLAS Collaboration, we obtained a bound on the Higgs boson width, ΓH≤2.57ΓHSM, at the 14 TeV Large Hadron Collider with an integrated luminosity of 300 fb−1.
ISSN:2470-0010
2470-0029
DOI:10.1103/PhysRevD.95.053004